System for converting a signal from a linear transducer for enabling parameter acquisition to varying degrees of accuracy

Claim 1

A system for converting a signal (22) from a substantially linear transducer (23) detecting a parameter on a motor vehicle electronic injection system, and so enabling parameter acquisition to varying degrees of accuracy; characterised by the fact that it comprises electronic means (44) comprising at least one amplifier (47, 48) for supplying at least one signal (FARF1, FARF2) differing in slope as compared to that (FARF) supplied by said transducer (23), processing means (36) for determining the value of said parameter to a degree of accuracy depending on the modified slope of said signal (FARF1, FARF2) from said electronic means (44), said electronic means (44) having at least two amplifiers (47, 48) supplied with said signal (22) from said transducer (23), and supplying respective output signals (45, 46) to said processing means (36), said processing means further having means (92, 94) for storing the output signals (45, 46) from said amplifiers (47, 48); means (95, 96) for selecting a respective said signal (FARF1, FARF2); means (96) for determining whether the value of said parameter falls within a range wherein said signals (FARF1, FARF2) overlap; and, if it does, means (97) for determining whether said signal (FARF1) has been stored in (FARF) memory register.

Claim 2

A system for converting a signal (22) from a substantially linear transducer (23) detecting a parameter on a motor vehicle electronic injection system, and so enabling parameter acquisition to varying degrees of accuracy; characterised by the fact that it comprises electronic means (44) comprising at least one amplifier (47, 48) for supplying at least one signal (FARF1, FARF2) differing in slope as compared to that (FARF) supplied by said transducer (23), processing means (36) for determining the value of said parameter to a degree of accuracy depending on the modified slope of said signal (FARF1, FARF2) from said electronic means (44), said electronic means (44) having at least two amplifiers (47, 48) supplied with said signal (22) from said transducer (23), and supplying respective output signals (45, 46) to said processing means (36), said processing means further having means (92, 94) for storing the output signals (45, 46) from said amplifiers (47, 48); means (95, 96) for selecting a respective said signal (FARF1, FARF2); means (96) for determining whether the value of said parameter falls within a range wherein said signals (FARF1, FARF2) overlap; and, if it does, means (97) for determining whether said signal (FARF1) has been stored in (FARF) memory register.

Claim 13

A system for converting a signal (22) from a substantially linear transducer (23) detecting a parameter on a motor vehicle electronic injection system, and so enabling parameter acquisition to varying degrees of accuracy; characterised by the fact that it comprises electronic means (44) comprising at least one amplifier (47, 48), for supplying at least one signal (FARF1, FARF2) differing in slope as compared to that (FARF) supplied by said transducer (23), said transducer (23) being an angle-transducer, processing means (36) for determining the value of said parameter to a degree of accuracy depending on the modified slope of said signal (FARF1, FARF2) from said electronic means (44), said processing means (36) having an analogue-digital converter block (39) supplied with the signals from said electronic means (44), said analogue-digital converter block (39) being an 8-bit type; said transducer (23) further presenting a reading precision of a few percent; and that said signals are acquired to a final accuracy of a few tenths of a degree per bit.

Claim 14

A system for converting a signal (22) from a substantially linear transducer (23) detecting a parameter on a motor vehicle electronic injection system, and so enabling parameter acquisition to varying degrees of accuracy; characterised by the fact that it comprises electronic means (44) comprising at least one amplifier (47, 48), for supplying at least one signal (FARF1, FARF2) differing in slope as compared to that (FARF) supplied by said transducer (23), said transducer (23) being an angle-transducer, processing means (36) for determining the value of said parameter to a degree of accuracy depending on the modified slope of said signal (FARF1, FARF2) from said electronic means (44), said processing means (36) having an analogue-digital converter block (39) supplied with the signals from said electronic means (44), said analogue-digital converter block (39) being an 8-bit type; said transducer (23) further presenting a reading precision of a few percent; and that said signals are acquired to a final accuracy of a few tenths of a degree per bit.

Claim 19

A system for converting a signal (22) from a substantially linear transducer (23) detecting a parameter on a motor vehicle electronic injection system, and so enabling parameter acquisition to varying degrees of accuracy; characterised by the fact that it comprises electronic means (44) comprising at least one amplifier (47, 48), for supplying at least one signal (FARF1, FARF2) differing in slope as compared to that (FARF) supplied by said transducer (23), said transducer (23) detecting the setting of a throttle (6) regulating air supply to said engine (1) processing means (36) for determining the value of said parameter to a degree of accuracy depending on the modified slope of said signal (FARF1, FARF2) from said electronic means (44), said processing means (36) forms part of said central processing unit (36) of said injection system, said injection system having an electronic control system (16) comprising a central processing unit (36) designed to receive signals from means (21) for detecting the speed of said engine (1), from said transducer (23) detecting the setting of said throttle (6) regulating air supply to said engine (1), from means for detecting engine exhaust gas (25), from means for detecting engine cooling water temperature (27), and from means for detecting engine air supply temperature (17).

Claim 20

A system for converting a signal (22) from a substantially linear transducer (23) detecting a parameter on a motor vehicle electronic injection system, and so enabling parameter acquisition to varying degrees of accuracy; characterised by the fact that it comprises electronic means (44) comprising at least one amplifier (47, 48), for supplying at least one signal (FARF1, FARF2) differing in slope as compared to that (FARF) supplied by said transducer (23), said transducer (23) detecting the setting of a throttle (6) regulating air supply to said engine (1) processing means (36) for determining the value of said parameter to a degree of accuracy depending on the modified slope of said signal (FARF1, FARF2) from said electronic means (44), said processing means (36) forms part of said central processing unit (36) of said injection system, said injection system having an electronic control system (16) comprising a central processing unit (36) designed to receive signals from means (21) for detecting the speed of said engine (1), from said transducer (23) detecting the setting of said throttle (6) regulating air supply to said engine (1), from means for detecting engine exhaust gas (25), from means for detecting engine cooling water temperature (27), and from means for detecting engine air supply temperature (17).