US4428353A — RPM Bias regulator valve

Claim 1

Independent Claim 136 words

A vehicular signal modulation system for producing a modulated output signal which varies as a function of at least a first condition and a second condition, the system comprising; a first transducer for monitoring the first condition and producing a first fluid signal which varies with the first condition; a second transducer for monitoring the second condition and producing a second fluid signal which varies with the second condition; and, a modulator valve for modulating one of the first and second fluid signals with the other to produce a modulated output signal which varies with the first and second conditions, the modulator valve including means for converting the second fluid signal to a biasing force and a pressure responsive means operatively connected with the converting means and the first transducer to produce the modulated output signal.

Claim 2

Dependent Claim 136 words

A vehicular signal modulation system for producing a modulated output signal which varies as a function of at least a first condition and a second condition, the system comprising; a first transducer for monitoring the first condition and producing a first fluid signal which varies with the first condition; a second transducer for monitoring the second condition and producing a second fluid signal which varies with the second condition; and, a modulator valve for modulating one of the first and second fluid signals with the other to produce a modulated output signal which varies with the first and second conditions, the modulator valve including means for converting the second fluid signal to a biasing force and a pressure responsive means operatively connected with the converting means and the first transducer to produce the modulated output signal.

Claim 3

Dependent Claim 26 words

The system as set forth in claim 1 wherein the first transducer is a throttle position monitor and the first fluid signal varies with throttle position.

Claim 4

Dependent Claim 19 words

The system as set forth in claim 2 wherein the first fluid signal varies inversely with throttle position advancement.

Claim 5

Dependent Claim 17 words

The system as set forth in claim 3 wherein the first fluid signal is a vacuum signal.

Claim 6

Dependent Claim 24 words

The system as set forth in claim 1 wherein the second transducer monitors engine speed and the second fluid signal varies with engine speed.

Claim 7

Dependent Claim 41 words

The system as set forth in claim 5 wherein the engine speed monitoring means is operatively connected with a diesel engine transfer oil injector pump and the second fluid signal varies with the oil pressure of the transfer oil injector pump.

Claim 8

Dependent Claim 24 words

The system as set forth in claim 2 wherein the second transducer monitors engine speed and the second fluid signal varies with engine speed.

Claim 9

Dependent Claim 37 words

The system as set forth in claim 7 wherein the modulator valve is operatively connected with an exhaust gas recirculation valve for controlling exhaust gas recirculation as a function of the throttle position and the engine speed.

Claim 10

Dependent Claim 25 words

The system as set forth in claim 1 wherein the first fluid signal varies with altitude and the second fluid signal varies with engine speed.

Claim 11

Dependent Claim 64 words

The system as set forth in claim 1 wherein the converting means includes an adjustable biasing means for applying the adjustable force to the pressure responsive means and a modulating means for adjusting the biasing force of the adjustable biasing means, the modulating means being operatively connected with the second transducer for adjusting the biasing force as a function of the second fluid signal.

Claim 12

Dependent Claim 189 words

The system as set forth in claim 10 wherein the modulator valve further includes: a first signal chamber which is disposed in fluid communication with the first transducer; a modulated output signal chamber in which the modulator output signal is produced; the pressure responsive means being disposed with one side in fluid communication with the first signal chamber and the other side in fluid communication with the modulated output signal chamber, the pressure responsive means attaining an equilibrium position when forces on its two sides are balanced; a first valve means for selectively providing fluid communication between the first signal chamber and the modulated output signal chamber in response to the pressure responsive means moving from the equilibrium position in response to a lower force on its modulated output signal chamber side than on its first signal chamber side; and, a second valve means for selectively connecting the modulating output signal chamber with a fluid supply means in response to the pressure responsive means moving from the equilibrium position in response to a lower force on the first signal chamber side than on the modulated output signal chamber side.

Claim 13

Dependent Claim 79 words

The system as set forth in claim 11 wherein the modulating means includes a diaphragm having one face disposed in fluid communication with the second transducer, a cam which is operatively connected with the diaphragm for motion therewith, and a cam follower which is operatively connected between the cam and the adjustable biasing means for adjusting the bias as a function of cam position, whereby the adjustable biasing means is adjusted as a function of the second fluid signal.

Claim 14

Dependent Claim 28 words

The system as set forth in claim 12 wherein the adjustable biasing means is an extension spring operatively connected with the cam follower and the pressure responsive means.

Claim 15

Dependent Claim 24 words

The system as set forth in claim 13 further including a cam biasing spring for biasing the cam against the second fluid signal pressure.

Claim 16

Dependent Claim 38 words

The system as set forth in claim 14 wherein the modulating means further includes a calibration spring for exerting a pressure against the cam and a calibration adjustment means for selectively adjusting the compression of the calibration spring.

Claim 17

Dependent Claim 106 words

The system as set forth in claim 12 wherein the first valve means includes a movable valve seat which is operatively connected with the pressure responsive means for movement therewith and a first valving element for selectively permitting and preventing fluid communication through the movable valve seat between the first signal chamber and the modulated output signal chamber and wherein the second valving means includes a stationary valve seat and a second valving element for selectively permitting and preventing fluid communication between the modulated output signal chamber and the fluid supply means, the first and second valving elements being operatively connected to undergo coordinated relative movement.

Claim 18

Dependent Claim 100 words

A vehicular signal modulation system for producing a modulated output signal which varies as a function of altitude and engine speed, the system comprising: means for sensing the altitude of a vehicle and for producing a first fluid signal which varies with the altitude; an engine speed monitor for monitoring engine speed and for producing an engine RPM signal which varies with engine speed; and, a modulator valve for modulating one of the altitude signals and the engine RPM signal with the other to produce a modulated output signal which varies as a function of both altitude and engine speed.

Claim 19

Dependent Claim 100 words

A vehicular signal modulation system for producing a modulated output signal which varies as a function of altitude and engine speed, the system comprising: means for sensing the altitude of a vehicle and for producing a first fluid signal which varies with the altitude; an engine speed monitor for monitoring engine speed and for producing an engine RPM signal which varies with engine speed; and, a modulator valve for modulating one of the altitude signals and the engine RPM signal with the other to produce a modulated output signal which varies as a function of both altitude and engine speed.

Claim 20

Dependent Claim 276 words

A modulator valve for modulating a first fluid signal and a second fluid signal, the modulator valve comprising: means for defining a first fluid signal receiving port; means for defining a second fluid signal receiving port; means for defining a modulated output signal port; means for defining a fluid pressure supply receiving port; a first signal chamber disposed in fluid communication with the first fluid signal port means; a modulated output signal chamber in which a modulated signal is produced, the modulated signal chamber being operatively connected with the modulated output signal port means; a movable, pressure responsive means disposed to receive opposing forces from fluid pressure in the first signal chamber and fluid pressure in the modulated output signal chamber, the pressure responsive means attaining an equilibrium position when forces on it are balanced; an adjustable biasing means for applying an adjustable biasing force to the pressure responsive means; modulating means for adjusting the biasing force of the adjustable biasing means, the modulating means being disposed in fluid communication with the second fluid signal port means; first valve means for selectively providing fluid communication between the first signal chamber and the modulated output signal chamber in response to the pressure responsive means moving from the equilibrium position in a first direction; and a second valve means for selectively connecting the modulated output signal chamber with the fluid pressure supply port means in response to the pressure responsive means moving from the equilibrium position in a second direction, whereby the first and second valve means adjust the pressure in the modulated output signal chamber such that the pressure responsive means is returned to the equilibrium position.

Claim 21

Dependent Claim 276 words

A modulator valve for modulating a first fluid signal and a second fluid signal, the modulator valve comprising: means for defining a first fluid signal receiving port; means for defining a second fluid signal receiving port; means for defining a modulated output signal port; means for defining a fluid pressure supply receiving port; a first signal chamber disposed in fluid communication with the first fluid signal port means; a modulated output signal chamber in which a modulated signal is produced, the modulated signal chamber being operatively connected with the modulated output signal port means; a movable, pressure responsive means disposed to receive opposing forces from fluid pressure in the first signal chamber and fluid pressure in the modulated output signal chamber, the pressure responsive means attaining an equilibrium position when forces on it are balanced; an adjustable biasing means for applying an adjustable biasing force to the pressure responsive means; modulating means for adjusting the biasing force of the adjustable biasing means, the modulating means being disposed in fluid communication with the second fluid signal port means; first valve means for selectively providing fluid communication between the first signal chamber and the modulated output signal chamber in response to the pressure responsive means moving from the equilibrium position in a first direction; and a second valve means for selectively connecting the modulated output signal chamber with the fluid pressure supply port means in response to the pressure responsive means moving from the equilibrium position in a second direction, whereby the first and second valve means adjust the pressure in the modulated output signal chamber such that the pressure responsive means is returned to the equilibrium position.

Claim 22

Dependent Claim 77 words

The modulator valve as set forth in claim 18 wherein the modulating means includes means for defining a force movable means disposed in fluid communication with the second fluid signal port means to be moved in response to changes in the pressure of the second fluid signal, and mechanical interconnecting means for connecting the force movable means with the adjustable biasing means such that changes in the second fluid change the bias of the adjustable biasing means.

Claim 23

Dependent Claim 33 words

The modulator valve as set forth in claim 19 wherein the adjustable biasing means includes an extension spring and wherein the modulating means compresses and extends the spring to adjust its biasing force.

Claim 24

Dependent Claim 49 words

The modulator valve as set forth in claim 20 wherein the modulating means includes a cam which is connected with the force movable means for movement therewith and a cam follower connected between the cam and the extension spring for adjusting the extension and compression of the extension spring.

Claim 25

Dependent Claim 17 words

The modulator valve as set forth in claim 21 wherein the force movable means includes a diaphragm.

Claim 26

Dependent Claim 16 words

The modulator valve as set forth in claim 22 wherein the diaphragm is a rolling diaphragm.

Claim 27

Dependent Claim 24 words

The modulator valve as set forth in claim 21 further including a cam biasing spring for biasing the cam against the control signal pressure.

Claim 28

Dependent Claim 42 words

The modulator valve as set forth in claim 24 wherein the modulating means further includes a calibrating spring for exerting a pressure against the cam biasing spring and calibration adjustment means for selectively adjusting the compression and extension of the calibrating spring.

Claim 29

Dependent Claim 48 words

The modulator valve as set forth in claim 19 wherein the first valve means includes a movable valve seat which is operatively connected with the pressure responsive means for movement therewith and a first valving element for selectively permitting and preventing fluid communication through the movable valve seat.

Claim 30

Dependent Claim 60 words

The modulator valve as set forth in claim 26 wherein the second valving means includes a stationary valve seat and a second valving element for selectively permitting and preventing fluid communication between the modulated output signal chamber and the fluid pressure supply port means, the first and second valving elements being operatively connected such that they undergo coordinated relative movement.

Claim 31

Dependent Claim 35 words

The modulator valve as set forth in claim 27 wherein the fluid pressure supply is a vacuum supply, the first fluid signal is a vacuum signal and the modulated output signal is a vacuum signal.

Claim 32

Dependent Claim 20 words

The modulation valve as set forth in claim 28 wherein the second fluid signal is a positive fluid pressure signal.

Claim 33

Independent Claim 84 words

A method of producing a modulated output signal which varies as a function of at least throttle position and a second condition, the method comprising: monitoring the throttle position and producing a first fluid signal which varies with the throttle position; monitoring the second condition and producing a second fluid signal which varies with the second condition, converting the second fluid signal to a mechanical biasing force; and, combining the first fluid signal and the mechanical biasing force to produce a modulated output signal.

Claim 34

Independent Claim 84 words

A method of producing a modulated output signal which varies as a function of at least throttle position and a second condition, the method comprising: monitoring the throttle position and producing a first fluid signal which varies with the throttle position; monitoring the second condition and producing a second fluid signal which varies with the second condition, converting the second fluid signal to a mechanical biasing force; and, combining the first fluid signal and the mechanical biasing force to produce a modulated output signal.

Claim 35

Dependent Claim 19 words

The method as set forth in claim 30 wherein the second condition is engine speed of the diesel engine.

Claim 36

Dependent Claim 26 words

The method as set forth in claim 30 wherein the second condition is the oil pressure of a transfer oil injector pump of the diesel engine.

Claim 37

Dependent Claim 51 words

The method as set forth in claim 30 wherein producing the modulated output signal includes applying the biasing force, the first fluid signal, and the modulated output signal to a movable, pressure responsive means and varying the modulated output signal to retain the movable pressure responsive means is in equilibrium position.

Claim 38

Dependent Claim 50 words

The method as set forth in claim 33 wherein converting the second fluid signal to a mechanical biasing force includes controlling a cam position with the second fluid signal and adjusting the extension of a spring which is connected with the pressure responsive means with variations in the cam position.

Claim 39

Dependent Claim 111 words

In a diesel engine, a method of producing a modulated output signal which varies as a function of at least a first condition and oil pressure of a transfer oil injector pump, the method comprising: monitoring the first condition and producing a first fluid signal which varies with the first condition; monitoring the transfer oil injector pump oil pressure and producing a second fluid signal which varies with the transfer oil injector pump oil pressure; converting one of the first and second fluid signals to a mechanical biasing force; and, combining the mechanical biasing force with the other of the first and second fluid signals to produce a modulated output signal.

Claim 40

Dependent Claim 111 words

In a diesel engine, a method of producing a modulated output signal which varies as a function of at least a first condition and oil pressure of a transfer oil injector pump, the method comprising: monitoring the first condition and producing a first fluid signal which varies with the first condition; monitoring the transfer oil injector pump oil pressure and producing a second fluid signal which varies with the transfer oil injector pump oil pressure; converting one of the first and second fluid signals to a mechanical biasing force; and, combining the mechanical biasing force with the other of the first and second fluid signals to produce a modulated output signal.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1987-01-30	1987-08-01	1988-01-31	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1991-01-30	1991-08-01	1992-01-31	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1995-01-30	1995-08-01	1996-01-31	$7700.00	Window Closed / Lapsed

RPM Bias regulator valve

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