US5186146A — Combustion evaluation apparatus and combustion co…

Claim 1

Independent Claim 114 words

An apparatus for evaluating combustion, comprising: a sampling member for sampling light emitted from flame in an internal combustion engine; branch means for separating the light sampled by said sampling member into at least two lights; means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights; photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals; and calculation/evaluation means for calculating a physical quantity for evaluation of the combustion condition of the flame by using a ratio of outputs from said photoelectric conversion elements, and for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 2

Independent Claim 114 words

An apparatus for evaluating combustion, comprising: a sampling member for sampling light emitted from flame in an internal combustion engine; branch means for separating the light sampled by said sampling member into at least two lights; means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights; photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals; and calculation/evaluation means for calculating a physical quantity for evaluation of the combustion condition of the flame by using a ratio of outputs from said photoelectric conversion elements, and for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 3

Dependent Claim 40 words

An apparatus for evaluating combustion according to claim 1, wherein said branch means include optical fibers capable of separating the light sampled by said one sampling member into at least two lights and having emergence portions at the branching ends.

Claim 4

Dependent Claim 77 words

An apparatus for evaluating combustion according to claim 1, wherein the physical quantity for evaluating combustion comprises an air ratio having a certain correlation with the ratio of the outputs from said photoelectric conversion elements and defined as Qr/Q 0 where Qr is an amount of air actually supplied for combustion of a certain amount of fuel supplied, and Q 0 is a theoretical amount of air necessary for completely combusting the certain amount of fuel supplied.

Claim 5

Dependent Claim 34 words

An apparatus for evaluating combustion according to claim 1, wherein the physical quantity for evaluating combustion comprises a temperature having a certain correlation with the ratio of the outputs from said photoelectric conversion elements.

Claim 6

Dependent Claim 55 words

An apparatus for evaluating combustion according to claim 2, wherein said optical fibers form at least three branching optical paths, and said calculation/evaluation means calculates the air ratio from the ratio of outputs a pair of photoelectric conversion elements and calculates the temperature from the ratio of outputs from another pair of photoelectric conversion elements.

Claim 7

Dependent Claim 22 words

An apparatus for evaluating combustion according to claim 1, wherein said means for selectively transmitting lights having different wavelengths includes optical filters.

Claim 8

Dependent Claim 43 words

An apparatus for evaluating combustion according to claim 1, wherein the combination of said optical filters includes a combination for separating light emitted from the flame as radical emission lights from at least two of OH radical, CH radical and C 2 radical.

Claim 9

Dependent Claim 97 words

An apparatus for evaluating combustion according to claim 3, wherein the air ratio is calculated based on one of the ratio of an electrical signal output from the photoelectric conversion element obtained from the optical signal from CH radical and an electrical signal output from the photoelectric conversion element obtained from the optical signal from OH radical, and the ratio of the electrical signal output from the photoelectric conversion element obtained from the optical signal from OH radical and an electrical signal output from the photoelectric conversion element obtained from the optical signal from C 2 radical.

Claim 10

Dependent Claim 50 words

An apparatus for evaluating combustion according to claim 4, wherein the temperature is calculated from the ratio of electrical signal outputs from said photoelectric conversion elements based on an optical signal obtained from thermal radiation having wavelengths including none of the wavelengths of an optical signal obtained from radical emission.

Claim 11

Dependent Claim 47 words

An apparatus for evaluating combustion according to claim 1, wherein the combination of optical filters includes a combination for separating an optical signal obtained from thermal radiation having wavelengths including none of the wavelengths of an optical signal obtained from radical emission into at least two lights.

Claim 12

Dependent Claim 109 words

An apparatus for evaluating combustion according to claim 1, wherein said calculation/evaluation means obtains the change in the physical quantity with respect to time for evaluating the combustion condition of the flame by using the change in the ratio of the outputs from said photoelectric conversion elements with respect to time in each combustion cycle from ignition to completion of combustion, calculates a pattern of frequency of occurrence of the physical value in each combustion cycle from the change in the physical value with respect to time, and compares this occurrence frequency pattern with a previously stored reference occurrence frequency pattern to evaluate the combustion condition of the flame.

Claim 13

Dependent Claim 20 words

An apparatus for evaluating combustion according to claim 11, wherein the physical quantity comprises an air ratio and/or a temperature.

Claim 14

Dependent Claim 23 words

An apparatus for evaluating combustion according to claim 1, further comprising a monitor for displaying information on combustion output from said calculation/evaluation means.

Claim 15

Dependent Claim 163 words

A combustion controller comprising: an internal combustion engine into which fuel and air are supplied to be combusted; a combustion evaluation system having a sampling member for sampling light emitted from flame in said internal combustion engine, branch means for separating the light sampled by said sampling member into at least two lights, means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights, photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals, and calculation/evaluation means for calculating a physical quantity for evaluation of the combustion condition of the flame by using a ratio of outputs from said photoelectric conversion elements, and for evaluating the combustion condition of the flame on the basis of the physical quantity; and a control unit for outputting a control signal to change and control the state of combustion in said internal combustion engine based on a signal output from said combustion evaluation apparatus.

Claim 16

Dependent Claim 163 words

A combustion controller comprising: an internal combustion engine into which fuel and air are supplied to be combusted; a combustion evaluation system having a sampling member for sampling light emitted from flame in said internal combustion engine, branch means for separating the light sampled by said sampling member into at least two lights, means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights, photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals, and calculation/evaluation means for calculating a physical quantity for evaluation of the combustion condition of the flame by using a ratio of outputs from said photoelectric conversion elements, and for evaluating the combustion condition of the flame on the basis of the physical quantity; and a control unit for outputting a control signal to change and control the state of combustion in said internal combustion engine based on a signal output from said combustion evaluation apparatus.

Claim 17

Dependent Claim 20 words

A combustion controller according to claim 14, wherein said means for selectively transmitting lights having different wavelengths includes optical filters.

Claim 18

Dependent Claim 16 words

A combustion controller according to claim 14, wherein a plurality of combustion evaluation systems are provided.

Claim 19

Dependent Claim 106 words

A combustion controller according to claim 14, said calculation/evaluation means obtains the change in the physical quantity with respect to time for evaluating the combustion condition of the flame by using the change in the ratio of the outputs from said photoelectric conversion elements with respect to time in each combustion cycle from ignition to completion of combustion, calculates a pattern of frequency of occurrence of the physical value in each combustion cycle from the change in the physical value with respect to time, and compares this occurrence frequency pattern with a previously stored reference occurrence frequency pattern to evaluate the combustion condition of the flame.

Claim 20

Dependent Claim 111 words

A combustion controller according to claim 14, said calculation/evaluation means obtains the change in air ratio and/or temperature with respect to time for evaluating the combustion condition of the flame by using the change in the ratio of the outputs from said photoelectric conversion elements with respect to time in each combustion cycle from ignition to completion of combustion, calculates a pattern of frequency of occurrence of the air ratio and/or the temperature in each combustion cycle from the change in air ratio and/or temperature with respect to time, and compares this occurrence frequency pattern with a previously stored reference occurrence frequency pattern to evaluate the combustion condition of the flame.

Claim 21

Dependent Claim 50 words

A combustion controller according to claim 14, wherein the control signal output from said control unit is sent to a supply rate adjusting unit for adjusting the rates of supply of air and fuel to the combustion chamber, an ignition timing adjusting unit, and a fuel injection timing adjusting unit.

Claim 22

Dependent Claim 21 words

A combustion controller according to claim 14, further comprising a monitor for displaying information on combustion output from said calculation/evaluation means.

Claim 23

Independent Claim 109 words

A method of controlling combustion comprising the steps of: sampling light emitted from flame in an internal combustion engine with one sampling member, and separating the light thereby sampled into at least two lights; transmitting the lights through means for transmitting lights having different wavelengths; converting optical signals passing through this means into electrical signals; calculating a physical quantity for evaluation of the combustion condition of the flame by using a ratio the electrical signals, and evaluating the combustion condition of the flame on the basis of the physical quantity; and changing and controlling the state of combustion in the internal combustion engine on the basis of said evaluation.

Claim 24

Independent Claim 109 words

A method of controlling combustion comprising the steps of: sampling light emitted from flame in an internal combustion engine with one sampling member, and separating the light thereby sampled into at least two lights; transmitting the lights through means for transmitting lights having different wavelengths; converting optical signals passing through this means into electrical signals; calculating a physical quantity for evaluation of the combustion condition of the flame by using a ratio the electrical signals, and evaluating the combustion condition of the flame on the basis of the physical quantity; and changing and controlling the state of combustion in the internal combustion engine on the basis of said evaluation.

Claim 25

Dependent Claim 21 words

A method of controlling combustion according to claim 21, wherein the means for transmitting lights having different wavelengths includes optical filters.

Claim 26

Independent Claim 181 words

An apparatus for detecting knocking in an internal combustion engine, comprising: a sampling member for sampling light emitted from flame in the internal combustion engine; branch means for separating the light sampled by said sampling member into at least two lights; means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights; photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals; calculation means for calculating the change in temperature with respect to time for evaluation of the combustion condition of the flame by using the change in a ratio of outputs from said photoelectric conversion elements with respect to time in each combustion cycle from ignition to completion of combustion, and for obtaining a pattern of frequency of occurrence of the temperature in each combustion cycle from the change in temperature with respect to time; and a determination unit for comparing the occurrence frequency pattern with a previously stored reference occurrence frequency pattern to effect determination as to whether or not the possibility of knocking is high.

Claim 27

Independent Claim 181 words

An apparatus for detecting knocking in an internal combustion engine, comprising: a sampling member for sampling light emitted from flame in the internal combustion engine; branch means for separating the light sampled by said sampling member into at least two lights; means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights; photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals; calculation means for calculating the change in temperature with respect to time for evaluation of the combustion condition of the flame by using the change in a ratio of outputs from said photoelectric conversion elements with respect to time in each combustion cycle from ignition to completion of combustion, and for obtaining a pattern of frequency of occurrence of the temperature in each combustion cycle from the change in temperature with respect to time; and a determination unit for comparing the occurrence frequency pattern with a previously stored reference occurrence frequency pattern to effect determination as to whether or not the possibility of knocking is high.

Claim 28

Dependent Claim 27 words

An apparatus for detecting knocking in an internal combustion engine according to claim 23, wherein said means for selectively transmitting lights having different wavelengths includes optical filters.

Claim 29

Independent Claim 149 words

A method of detecting knocking in an internal combustion engine, comprising the steps of: sampling light emitted from flame in an internal combustion engine with one sampling member, and separating the light thereby sampled into at least two lights; transmitting the lights through means for transmitting lights having different wavelengths; converting optical signals passing through this means into electrical signals; obtaining the change in flame temperature with respect to time by using the change in a ratio of the electrical signals with respect to time in each combustion cycle from ignition to completion of combustion, and calculating a pattern of frequency of occurrence of the temperature value in each combustion cycle from the change in flame temperature with respect to time; and comparing the occurrence frequency pattern with a previously stored reference occurrence frequency pattern to effect determination as to whether or not the possibility of knocking is high.

Claim 30

Independent Claim 149 words

A method of detecting knocking in an internal combustion engine, comprising the steps of: sampling light emitted from flame in an internal combustion engine with one sampling member, and separating the light thereby sampled into at least two lights; transmitting the lights through means for transmitting lights having different wavelengths; converting optical signals passing through this means into electrical signals; obtaining the change in flame temperature with respect to time by using the change in a ratio of the electrical signals with respect to time in each combustion cycle from ignition to completion of combustion, and calculating a pattern of frequency of occurrence of the temperature value in each combustion cycle from the change in flame temperature with respect to time; and comparing the occurrence frequency pattern with a previously stored reference occurrence frequency pattern to effect determination as to whether or not the possibility of knocking is high.

Claim 31

Dependent Claim 26 words

A method of detecting knocking in an internal combustion engine according to claim 25, wherein said means for transmitting lights having different wavelengths includes optical filters.

Claim 32

Independent Claim 208 words

An apparatus for controlling combustion in an internal combustion engine, comprising: a sampling member for sampling light emitted from flame in the internal combustion engine; branch means for separating the light sampled by said sampling member into at least two lights; means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights; photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals; calculation means for calculating the change in temperature with respect to time for evaluation of the combustion condition of the flame by using the change in a ratio of outputs from said photoelectric conversion elements with respect to time in each combustion cycle from ignition to completion of combustion, and for obtaining a pattern of frequency of occurrence of the temperature in each combustion cycle from the change in temperature with respect to time; a determination unit for comparing the occurrence frequency pattern with a previously stored reference occurrence frequency pattern to effect determination as to whether or not the possibility of knocking is high; and a control unit for outputting a control signal to change and control the state of combustion in the internal combustion engine on the basis of said determination.

Claim 33

Independent Claim 208 words

An apparatus for controlling combustion in an internal combustion engine, comprising: a sampling member for sampling light emitted from flame in the internal combustion engine; branch means for separating the light sampled by said sampling member into at least two lights; means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights; photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals; calculation means for calculating the change in temperature with respect to time for evaluation of the combustion condition of the flame by using the change in a ratio of outputs from said photoelectric conversion elements with respect to time in each combustion cycle from ignition to completion of combustion, and for obtaining a pattern of frequency of occurrence of the temperature in each combustion cycle from the change in temperature with respect to time; a determination unit for comparing the occurrence frequency pattern with a previously stored reference occurrence frequency pattern to effect determination as to whether or not the possibility of knocking is high; and a control unit for outputting a control signal to change and control the state of combustion in the internal combustion engine on the basis of said determination.

Claim 34

Dependent Claim 27 words

An apparatus for controlling combustion in an internal combustion engine according to claim 27, wherein said means for selectively transmitting lights having different wavelengths includes optical filters.

Claim 35

Independent Claim 167 words

A method of controlling combustion in an internal combustion engine, comprising the steps of: sampling light emitted from flame in an internal combustion engine with one sampling member, and separating the light thereby sampled into at least two lights; transmitting the lights through means for transmitting lights having different wavelengths; converting optical signals passing through this means into electrical signals; obtaining the change in flame temperature with respect to time by using the change in a ratio of the electrical signals with respect to time in each combustion cycle from ignition to completion of combustion, and calculating a pattern of frequency of occurrence of the temperature value in each combustion cycle from the change in flame temperature with respect to time; comparing the occurrence frequency pattern with a previously stored reference occurrence frequency pattern to effect determination as to whether or not the possibility of knocking is high; and changing and controlling the state of combustion in the internal combustion engine on the basis of said determination.

Claim 36

Independent Claim 167 words

A method of controlling combustion in an internal combustion engine, comprising the steps of: sampling light emitted from flame in an internal combustion engine with one sampling member, and separating the light thereby sampled into at least two lights; transmitting the lights through means for transmitting lights having different wavelengths; converting optical signals passing through this means into electrical signals; obtaining the change in flame temperature with respect to time by using the change in a ratio of the electrical signals with respect to time in each combustion cycle from ignition to completion of combustion, and calculating a pattern of frequency of occurrence of the temperature value in each combustion cycle from the change in flame temperature with respect to time; comparing the occurrence frequency pattern with a previously stored reference occurrence frequency pattern to effect determination as to whether or not the possibility of knocking is high; and changing and controlling the state of combustion in the internal combustion engine on the basis of said determination.

Claim 37

Dependent Claim 26 words

A method of controlling combustion in an internal combustion engine according to claim 29, wherein said means for transmitting lights having different wavelengths includes optical filters.

Claim 38

Dependent Claim 192 words

A motor vehicle comprising: an internal combustion engine having a cylinder, a piston reciprocatively movable in said cylinder, a combustion chamber defined by said cylinder and said piston, a fuel injection valve for injecting fuel into said combustion chamber, and an ignition plug for igniting the fuel; a combustion evaluation system having a sampling member for sampling light emitted from flame in said internal combustion engine, branch means for separating the light sampled by said sampling member into at least two lights, means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights, photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals, and calculation/evaluation means for calculating a physical quantity for evaluation of the combustion condition of the flame by using a ratio of outputs from said photoelectric conversion elements, and for evaluating the combustion condition of the flame on the basis of the physical quantity; and a control unit for outputting a control signal to change and control the state of combustion in said internal combustion engine based on a signal output from said combustion evaluation apparatus.

Claim 39

Dependent Claim 192 words

A motor vehicle comprising: an internal combustion engine having a cylinder, a piston reciprocatively movable in said cylinder, a combustion chamber defined by said cylinder and said piston, a fuel injection valve for injecting fuel into said combustion chamber, and an ignition plug for igniting the fuel; a combustion evaluation system having a sampling member for sampling light emitted from flame in said internal combustion engine, branch means for separating the light sampled by said sampling member into at least two lights, means for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights, photoelectric conversion elements for respectively converting optical signals passing through said transmission means into electrical signals, and calculation/evaluation means for calculating a physical quantity for evaluation of the combustion condition of the flame by using a ratio of outputs from said photoelectric conversion elements, and for evaluating the combustion condition of the flame on the basis of the physical quantity; and a control unit for outputting a control signal to change and control the state of combustion in said internal combustion engine based on a signal output from said combustion evaluation apparatus.

Claim 40

Dependent Claim 20 words

A motor vehicle according to claim 31, wherein said means for selectively transmitting lights having different wavelengths includes optical filters.

Claim 41

Independent Claim 112 words

An apparatus for controlling combustion condition, which comprises: a sampling member for sampling light emitted from flame in a combustor; means for dividing the sampled light into at least two lights each having different wavelengths; means for guiding each of the divided lights to conversion means for converting each of the divided lights into an electric signal; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame in accordance with outputs of the signals corresponding to the divided lights from said conversion means; an means for providing a signal for controlling the combustion condition of said combustor in response to the signals from said calculations means.

Claim 42

Independent Claim 112 words

An apparatus for controlling combustion condition, which comprises: a sampling member for sampling light emitted from flame in a combustor; means for dividing the sampled light into at least two lights each having different wavelengths; means for guiding each of the divided lights to conversion means for converting each of the divided lights into an electric signal; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame in accordance with outputs of the signals corresponding to the divided lights from said conversion means; an means for providing a signal for controlling the combustion condition of said combustor in response to the signals from said calculations means.

Claim 43

Independent Claim 109 words

An apparatus for controlling combustion condition, which comprises: means for separating light signal sampled by a sampling member from flame in a combustor into at least two lights each having different wavelengths; means for guiding each of the separated lights to conversion means for converting each of the separated lights into an electric signal; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame in accordance with outputs of the signals corresponding to the separated lights from said conversion means; and means for providing a signal for controlling the combustion condition of said combustor in response to the signal from said calculation means.

Claim 44

Independent Claim 109 words

An apparatus for controlling combustion condition, which comprises: means for separating light signal sampled by a sampling member from flame in a combustor into at least two lights each having different wavelengths; means for guiding each of the separated lights to conversion means for converting each of the separated lights into an electric signal; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame in accordance with outputs of the signals corresponding to the separated lights from said conversion means; and means for providing a signal for controlling the combustion condition of said combustor in response to the signal from said calculation means.

Claim 45

Independent Claim 121 words

An apparatus for controlling combustion condition, which comprises: a sampling member for sampling light emitted from flame in a combustor; means for separating the sampled light into at least two lights each having different wavelengths; means for guiding each of the separated lights through optical paths; conversion means for converting each of the separated lights from said optical paths into an electric signal; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame in accordance with a ratio of outputs of the signals corresponding to the separated lights from said conversion means; and means for providing a signal for controlling the combustion condition of said combustor in response to the signal from said calculation means.

Claim 46

Independent Claim 121 words

An apparatus for controlling combustion condition, which comprises: a sampling member for sampling light emitted from flame in a combustor; means for separating the sampled light into at least two lights each having different wavelengths; means for guiding each of the separated lights through optical paths; conversion means for converting each of the separated lights from said optical paths into an electric signal; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame in accordance with a ratio of outputs of the signals corresponding to the separated lights from said conversion means; and means for providing a signal for controlling the combustion condition of said combustor in response to the signal from said calculation means.

Claim 47

Independent Claim 122 words

An apparatus for controlling combustion condition, which comprises: a sampling member for sampling light emitted from flame in an internal combustion engine; means for dividing the sampled light into at least two lights each having different wavelengths; means for guiding each of the divided lights through optical paths; conversion means for converting each of the divided lights from said optical paths into an electric signal; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame in accordance with outputs of the signals corresponding to the separated lights from said conversion means; and means for providing a signal for controlling the combustion condition of said internal combustion engine in response to the signal from said calculation means.

Claim 48

Independent Claim 122 words

An apparatus for controlling combustion condition, which comprises: a sampling member for sampling light emitted from flame in an internal combustion engine; means for dividing the sampled light into at least two lights each having different wavelengths; means for guiding each of the divided lights through optical paths; conversion means for converting each of the divided lights from said optical paths into an electric signal; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame in accordance with outputs of the signals corresponding to the separated lights from said conversion means; and means for providing a signal for controlling the combustion condition of said internal combustion engine in response to the signal from said calculation means.

Claim 49

Independent Claim 110 words

An apparatus for evaluating combustion condition, which comprises: a sampling member for sampling light emitted from flame in an internal combustion engine; means for separating the sampled light into at least two lights each having different wavelengths; means for guiding the separated lights through optical paths to photoelectric conversion means for converting the separated lights into electric signals; means for calculating outputs corresponding to tie electric signals from said conversion means; means for calculating a physical quantity for evaluation of the combustion condition of the flame based upon the calculation of the outputs; and means for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 50

Independent Claim 110 words

An apparatus for evaluating combustion condition, which comprises: a sampling member for sampling light emitted from flame in an internal combustion engine; means for separating the sampled light into at least two lights each having different wavelengths; means for guiding the separated lights through optical paths to photoelectric conversion means for converting the separated lights into electric signals; means for calculating outputs corresponding to tie electric signals from said conversion means; means for calculating a physical quantity for evaluation of the combustion condition of the flame based upon the calculation of the outputs; and means for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 51

Independent Claim 92 words

An apparatus for evaluating combustion, which comprises: means for separating light sampled by a sampling member for sampling light emitted from flame in a combustor into at least two lights each having different wavelengths; means for guiding the separated lights through optical paths to photoelectric conversion means for converting the separated lights into electrical signals; means for calculating a physical quantity for evaluation of the combustion condition of the flame based upon the electric signals; and means for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 52

Independent Claim 92 words

An apparatus for evaluating combustion, which comprises: means for separating light sampled by a sampling member for sampling light emitted from flame in a combustor into at least two lights each having different wavelengths; means for guiding the separated lights through optical paths to photoelectric conversion means for converting the separated lights into electrical signals; means for calculating a physical quantity for evaluation of the combustion condition of the flame based upon the electric signals; and means for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 53

Independent Claim 102 words

An apparatus for evaluating combustion, which comprises: a sampling member for sampling light emitted from flame in an internal combustion engine; means for separating the sampled light into at least two lights each having different wavelengths; means for transmitting the separated lights in the respective optical paths; conversion means for converting optical signal; passing through said transmission means into electrical signals; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame by using outputs from said photoelectric conversion means; and means for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 54

Independent Claim 102 words

An apparatus for evaluating combustion, which comprises: a sampling member for sampling light emitted from flame in an internal combustion engine; means for separating the sampled light into at least two lights each having different wavelengths; means for transmitting the separated lights in the respective optical paths; conversion means for converting optical signal; passing through said transmission means into electrical signals; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame by using outputs from said photoelectric conversion means; and means for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 55

Independent Claim 95 words

An apparatus for evaluating combustion, which comprises: a sampling member for sampling light emitted from flame in an internal combustion engine; dividing means for dividing the sampled light into at least two lights each having different wavelengths; picking-up means for picking up the divided lights; conversion means for converting the picked-up lights into electrical signals; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame on the basis of the electric signals; and means for evaluating the combustion condition of the flame on the basis of the physical quantity.

Claim 56

Independent Claim 95 words

An apparatus for evaluating combustion, which comprises: a sampling member for sampling light emitted from flame in an internal combustion engine; dividing means for dividing the sampled light into at least two lights each having different wavelengths; picking-up means for picking up the divided lights; conversion means for converting the picked-up lights into electrical signals; calculation means for calculating a physical quantity for evaluation of the combustion condition of the flame on the basis of the electric signals; and means for evaluating the combustion condition of the flame on the basis of the physical quantity.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1996-02-16	1996-08-17	1997-02-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2000-02-16	2000-08-17	2001-02-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2004-02-16	2004-08-17	2005-02-16	$7700.00	Window Closed / Lapsed

Combustion evaluation apparatus and combustion controller

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