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| Number | Title | Issue Date |
| 5884211 | System and method for memory reset of a vehicle controller A system and method for resetting a portion of memory in a vehicle controller include repeatedly comparing data stored in at least one validation address with corresponding data stored in a non-volatile data storage device, transferring data representing ... | 03/16/1999 |
| 5817941 | Method and apparatus for supporting a sensor in a vehicle A method and apparatus for supporting a sensor in a vehicle in a manner to properly orient the axis of sensitivity of the sensor includes a lead frame having a substantially planar base portion with a plurality of leads extending from opposing ends thereo... | 10/06/1998 |
| 5809451 | Sensor processor integrated circuit A single chip sensor processor includes an integrated analog to digital converter (A/D) and digital filter. Analog acceleration signals from a sensor is converted and digitally filtered on-chip in parallel with other processor software executions to effec... | 09/15/1998 |
| 5801070 | High sensitivity, silicon-based, Microcalorimetric gas sensor and fabrication method A gas sensor and a method for measuring gas constituents, particularly exhaust gas constituents for an internal combustion engine, comprising a pair of polysilicon plates, each plate supporting a pair of resistors, one serving as a heater and the other as... | 09/01/1998 |
| 5796248 | Method and apparatus for commutating a three-phase variable reluctance motor A method and apparatus for exciting a three-phase variable reluctance motor is used, for example, as an encoder system to commutate a rotor. The system includes a power source, a position sensor and excitation electronics. The position sensor is adapted t... | 08/18/1998 |
| 5767394 | Method and system for early cylinder identification An early cylinder identification method and system using pulsewidth encoding are provided for use in a variable camshaft timing equipped engine. The method includes generating multiple signal pulses, each signal pulse having a unique length and being asso... | 06/16/1998 |
| 5755202 | Method of reducing feed gas emissions in an internal combustion engine A method of reducing feed gas emissions and improving fuel economy in an internal combustion engine uses a variable cam timing mechanism and an electronically controlled throttle. The method includes: a) predetermining ranges of negligible torque demand, ... | 05/26/1998 |
| 5740083 | Delta time measurement circuit for determining parameter derivatives of a rotational velocity sensor signal An electronic circuit having control data registers (24-28) for receiving the output of a digital counter (20) that records clock pulses within a measured time that is determined by a rotary speed sensor (14) which produces a square wave pulse train signa... | 04/14/1998 |
| 5736633 | Method and system for decoding of VCT/CID sensor wheel A method and system are provided for distinguishing a cylinder identification (CID) signal pulse from camshaft timing signal pulses in a variable cam timing (VCT) engine having multiple engine combustion events. The method includes generating multiple sig... | 04/07/1998 |
| 5732381 | Method and system for generating a fuel pulse waveform A method and system for generating a fuel pulse output signal to control fuel delivery from a fuel injector to a cylinder of an internal combustion engine. A plurality of holding registers asynchronously receive a plurality of fuel pulse data from a proce... | 03/24/1998 |
| 5717592 | Method and system for engine throttle control A method and system are provided for positioning a gasoline engine throttle in response to an angular position input command signal. A multi-phase variable reluctance motor positions the throttle in response to motor current commands from a micro-controll... | 02/10/1998 |
| 5714409 | Method and apparatus for packaging a vehicle sensor and integrated circuit chip An apparatus for packaging a vehicle sensor and integrated circuit chip includes a ceramic substrate having an opening formed therein. A sensor is secured within the opening. An integrated circuit chip is secured within the opening in electrical communica... | 02/03/1998 |
| 5673668 | Method and apparatus for electronic throttle monitoring A method and apparatus for executing a strategy of electronic throttle monitoring of a powertrain system including an electronic powertrain control module, and an electronic throttle control, includes an independent processor receiving signals shared with... | 10/07/1997 |
| 5671718 | Method and system for controlling a flow of vapor in an evaporative system A method and system for determining a level of vapor generated by an evaporative system. The evaporative system is closed to atmosphere. An initial pressure in a fluid-filled tank is sensed and, after a predetermined amount of time, a second pressure in t... | 09/30/1997 |
| 5671141 | Computer program architecture for onboard vehicle diagnostic system A computer program architecture for a motor vehicle on-board diagnostic system includes a plurality of monitor modules for monitoring vehicle systems or components and issuing a malfunction subroutine call to a diagnostic executive upon detecting a system... | 09/23/1997 |
| 5666918 | Engine airflow controller with feedback loop compensation for changes in engine operating conditions An Electronic Engine Controller (EEC) controls the operation of an electronically controlled throttle. The EEC generates a predicted desired throttle angle value as a function of upstream and downstream air pressure values, an air temperature value and a ... | 09/16/1997 |
| 5666917 | System and method for idle speed control A system and method for engine idle speed control delay operation of a vehicle accessory (26) while introducing a stored torque disturbance profile corresponding to that vehicle accessory into a feedforward engine control system so as to minimize variatio... | 09/16/1997 |
| 5642044 | Method and apparatus for exciting a three-phase variable reluctance position sensor A method and apparatus for exciting a three-phase variable reluctance motor is used, for example, as an encoder system to commutate a rotor. The system includes a power source, a position sensor and excitation electronics. The position sensor is adapted t... | 06/24/1997 |
| 5638798 | Method and system for generating ignition coil control pulses A method and system for generating an ignition coil output signal to control charging and discharging of a plurality of ignition coils in an internal combustion engine. A plurality of holding registers asynchronously receive a plurality of ignition coil d... | 06/17/1997 |
| 5633796 | Method and apparatus for inferring engine oil temperature for use with an oil change indicator An electronic engine controller infers the instantaneous temperature of lubricating oil in an engine by determining a steady state oil temperature value as a function of engine speed and aircharge, determining an oil temperature time constant as a functio... | 05/27/1997 |
| 5628292 | Method and system for generating an engine position dependent output control signal A method and system for generating a position dependent output control signal. The position of a rotating machine, such as an internal combustion engine, is sensed and a corresponding position signal is generated. The position signal is processed to obtai... | 05/13/1997 |
| 5625750 | Catalyst monitor with direct prediction of hydrocarbon conversion efficiency by dynamic neural networks A process and apparatus for monitoring catalyst conversion activity includes a predictor of feedgas emissions and a predictor of tailpipe emissions, each predictor providing an output for generating a ratio of conversion activity. Each predictor comprises... | 04/29/1997 |
| 5614665 | Method and system for monitoring an evaporative purge system A method and system for monitoring an evaporative purge system for malfunctions and leaks. First, a plurality of predetermined entry conditions are checked for satisfaction. If the plurality of predetermined entry conditions have been met, a flow of vapor... | 03/25/1997 |
| 5587518 | Accelerometer with a combined self-test and ground electrode A micro-machined accelerometer includes a moveable metal plate, mounted upon a semiconductor substrate. The moveable metal plate includes an aperture which contains a pedestal and at least one torsion bar for connecting the pedestal to the moveable metal ... | 12/24/1996 |
| 5579573 | Method for fabricating an undercoated chip electrically interconnected to a substrate Method for fabricating an undercoated chip electrically interconnected to a substrate. The method includes the initial step of depositing a predetermined quantity of a liquid undercoat material onto the chip or the substrate. The method continues with the... | 12/03/1996 |
| 5563792 | Vehicular surface traction characteristic estimation techniques A technique for estimating a traction characteristic of a surface under a moving vehicle, such as the coefficient of friction of the surface. The traction characteristic can be estimated by generating a torque signal representative of at least an estimate... | 10/08/1996 |
| 5546909 | Method and system for generating a fuel pulse waveform A method and system for generating electronic fuel injection pulse waveforms to achieve an accurate air/fuel ratio control during transient conditions. Sensors are provided for sensing a plurality of engine parameters. An electronic engine controller is p... | 08/20/1996 |
| 5537870 | Contaminant free backflow reducing insert for mass air flow sensors A housing structure for mass air flow sensors includes an auxiliary passage way, internal to the structure, that diverts a portion of the main air flow towards sensing elements. The sensing elements are shielded from the main air flow, so the contaminants... | 07/23/1996 |
| 5535722 | Knock detection system and control method for an internal combustion engine A knock control system for internal combustion engines comprising a knock sensor and a knock detection circuit that uses an electronic engine controller. The knock sensor creates an electrical output signal indicating the presence of engine structure vibr... | 07/16/1996 |
| 5535621 | On-board detection of fuel injector malfunction The present invention is directed to an on-board diagnostic system for detecting malfunctioning fuel injectors in an internal combustion engine during engine operation. A fuel injector control means is provided for individually actuating fuel injectors op... | 07/16/1996 |
| 5531879 | Hego sensor without characteristic shift down A non-catalytic metal is used as an inner electrode of a heated exhaust gas oxygen sensor to eliminate the negative shift produced in the sensor emf when rich exhaust leaks into the reference compartment.... | 07/02/1996 |
| 5531105 | Method and system for determining engine oil consumption A method and system for determining steady state and real time engine oil consumption of an automotive engine which generates exhaust gases containing oil and fuel having a known sulphur content. The system includes an exhaust gas conditioner coupled to t... | 07/02/1996 |
| 5528446 | Integrated power module diagnostic unit An integrated power module combining drivers and power devices includes a diagnosis module integrated with or connected to the integrated power module. That includes protectors. The protectors provides protection against power device failure, transistor s... | 06/18/1996 |
| 5526794 | Electronic controller for accurately controlling transient operation of a physical system An electronic engine controller (EEC) controls the delivery of fuel to an internal combustion engine via one or more fuel injectors by executing a background routine to measure a plurality of system conditions including airflow and engine temperature. A r... | 06/18/1996 |
| 5522250 | Aged exhaust gas oxygen sensor simulator An aged exhaust gas oxygen sensor (EGO) simulator is inserted between an exhaust gas oxygen sensor and an electronic control module for testing the response of fuel control and emission systems to various amounts of exhaust gas oxygen sensor aging/degradi... | 06/04/1996 |
| 5519617 | Torque managed traction control for the drive wheels of an automotive vehicle An electronic driveline controller and traction control method for an engine driven vehicle wherein the tractive effort of the driving wheels is controlled to avoid excess slip of the traction wheels relative to the vehicle road surface, the traction cont... | 05/21/1996 |
| 5519258 | System and method for controlling vehicle lift gate window wiper A system and method for controlling a wiper for a vehicle window on a lift gate. The control system and method include an ignition switch (12), lift gate position switch (14), window position switch (16), washer switch (18) and wiper switch (20) for gener... | 05/21/1996 |
| 5512789 | Electrically heated catalyst control A control for electrically heated catalysts in a motor vehicle catalytic converter governs a switch for alternatively coupling an alternator output to the motor vehicle battery and a heating element of the catalytic converter. The control monitors electri... | 04/30/1996 |
| 5506777 | Electronic engine controller with automatic hardware initiated A/D conversion of critical engine control parameters An electronic engine controller includes a central processing unit (CPU) which controls the operations of the controller and an analog-to-digital (A/D)converter chip which receives analog signals generated by sensors which transmit signals indicative of v... | 04/09/1996 |
| 5505183 | Method and system for controlling emissions from an internal combustion engine A method and system for reducing emissions from an engine during periods of partial or total heated exhaust gas oxygen (HEGO) sensor failure. A switch point is stored in an electronic engine control for use in controlling the fuel delivered to the engine ... | 04/09/1996 |
