Abstract: A method and system for avoiding conflicts across a vehicle diagnostics bus by incorporating a bridge device between the vehicle's data link connector and one or more sensors. The bridge device is capable of monitoring traffic across the vehicle's diagnostics bus, and conditions and transmits a sensor signal across the bus when said monitoring indicates that the transmission will not interfere or corrupt any other signals on said bus.

Abstract: A method for an engine control unit to update internal tables based on feedback from the engine without external computing, comprising the steps of establishing flash memory and RAM memory in the ECU, assigning a portion of the RAM memory to storage of a table of engine conditions from the flash memory, updating all program code pointers to the table to read the table from the assigned portion of RAM, and revise the table in RAM based on input received from the engine sensors.

Abstract: A method for controlling wheel slip comprising determining an actual wheel slip of a set of driven wheels on a vehicle, adjusting the actual wheel slip for cornering distortion, setting a target slip condition using a traction control unit with a multi-position switch depending upon road conditions, calculating overslip of the wheels, and retarding an engine output to minimize overslip, and an apparatus for accomplishing same.

Abstract: The present invention utilizes a speed density method for determining the cylinder air mass using volumetric efficiency (VE) based on engine speed and manifold pressure. The VE data contain the cylinder filling efficiency for various engine speed and manifold pressure values. The manifold pressure is then measured by a manifold absolution pressure (MAP) sensor. Using the speed density has the advantage that it is much less affected by pulsation in the intake system of the vehicle, and does not require a linear air flow past a sensor in the engine intake system.

Abstract: A method for controlling wheel slip comprising determining an actual wheel slip of a set of driven wheels on a vehicle, adjusting the actual wheel slip for cornering distortion, setting a target slip condition using a traction control unit with a multi-position switch depending upon road conditions, calculating overslip of the wheels, and retarding an engine output to minimize overslip, and an apparatus for accomplishing same.

Abstract: The present invention utilizes a speed density method for determining the cylinder air mass using volumetric efficiency (VE) based on engine speed and manifold pressure. The VE data contain the cylinder filling efficiency for various engine speed and manifold pressure values. The manifold pressure is then measured by a manifold absolution pressure (MAP) sensor. Using the speed density has the advantage that it is much less affected by pulsation in the intake system of the vehicle, and does not require a linear air flow past a sensor in the engine intake system.