Abstract: A method to estimate ambient air temperature in the vicinity of a vehicle equipped with an internal combustion engine equipped with at least an ignition and an electronic control unit (ECU) with memory.

Abstract: A method to operate an electronic controlled internal combustion engine to perform on board NOx emissions level diagnostics. In one embodiment, the method may include operating the engine to maintain a predetermined temperature for a predetermined period of time, determining whether the engine operating status is stable for one of cruise control, idle engine speed, engine torque, or high idle regeneration for a predetermined period of time, cycling the EGR valve between a first position for a predetermined period of time and then in a second position for a predetermined period of time, a determining a change in engine out NOx levels to determine whether an engine component or system is malfunctioning.

Abstract: A method to operate a vehicle equipped with an electronic controlled internal combustion engine. The engine fan is used as a dynamic fan brake when the vehicle exceeds a minimum predetermined operating parameter for a predetermined period of time, and is disabled once the vehicle is operating within predetermined operating parameters.

Abstract: A method to estimate ambient air temperature in the vicinity of a vehicle equipped with an internal combustion engine equipped with at least an electronic control unit (ECU) with memory and a temperature sensor.

Abstract: A method for verifying the functionality of the components for a diesel particulate filter system based upon engine speed, engine torque, inlet and outlet exhaust pressure at the diesel particulate filter. Various sensor signals are compared to calibratable values in memory for a determination whether the diesel particulate filter system is functional.

Abstract: In one aspect, the present invention is directed to a method for operating an electronically controlled internal combustion engine in a vehicle to perform at least one rationality check on at least one sensor to detect impending sensor failure and verify component functionality. The engine is equipped with an engine control system (ECS) having a memory and in electronic communication with various sensors. The sensors transmit data signals to the ECS indicative of associated engine and vehicle component functionality.

Abstract: A method to operate a vehicle equipped with an electronic controlled internal combustion engine. The engine fan is used as a dynamic fan brake when the vehicle exceeds a minimum predetermined operating parameter for a predetermined period of time, and is disabled once the vehicle is operating within predetermined operating parameters.

Abstract: A method and system for controlling an engine controller in response to actual vehicle load.

Abstract: A method for verifying the functionality of the components for a diesel particulate filter system based upon engine speed, engine torque, inlet and outlet exhaust pressure at the diesel particulate filter. Various sensor signals are compared to calibratable values in memory for a determination whether the diesel particulate filter system is functional.

Abstract: A method for verifying the functionality of the components for a diesel particulate filter system based upon engine speed, engine torque, inlet and outlet exhaust pressure at the diesel particulate filter. Various sensor signals are compared to calibratable values in memory for a determination whether the diesel particulate filter system is functional.

Abstract: In one aspect, the present invention is directed to a method for operating an electronically controlled internal combustion engine in a vehicle to perform at least one rationality check on at least one sensor to detect impending sensor failure and verify component functionality. The engine is equipped with an engine control system (ECS) having a memory and in electronic communication with various sensors. The sensors transmit data signals to the ECS indicative of associated engine and vehicle component functionality.

Abstract: An engine shutdown system is provided that includes an engine control module (ECM) (12) having sensors (20, 22, 24, 26, 28, 30, 34, 36) that can activate an engine shutdown sequence. A set of redundant sensors (20?, 22?, 24?, 26?, 28?, 30?, 32?, 34?, 36?) and a redundant engine control module (RECM) (14) can also activate an engine shutdown sequence independent of the ECM. Engine operating parameters are monitored by sensors to determine if one of the engine parameters deviates from an acceptable level. If the engine control determines that a parameter has exceeded a predetermined level, an engine shutdown signal may be generated by either the ECM or RECM that may cut off the fuel supply, interrupt an ignition circuit, or activate external engine shutdown devices and may also activate alarm and message panels. A redundant engine shutdown system is also provided to disable the primary engine control unit.

Abstract: A system for modifying or disabling a selected engine function in response to a determination based upon a precipitation sensor input that precipitation is present. The system also may include an ambient temperature sensor that determines whether the ambient temperature is below a predetermined level. Signals from the precipitation sensor and temperature sensor are provided to an engine controller. The engine controller functions to modify or disable a selected engine function such as a compression brake, engine exhaust brake, maximum speed calibration or passing speed variance calibration.

Abstract: A method for estimating engine torque loss due to a fan. A table of maximum fan torque losses is compiled at a plurality of engine speeds. An engine control unit (ECU) is configured with the table of maximum fan torque losses. A first maximum fan torque loss and a second maximum fan torque loss for an engine speed are retrieved from the table. A maximum fan torque loss for the engine speed is estimated by interpolating between the first maximum fan torque loss and the second maximum fan torque loss. An engine torque loss estimate is calculated by adjusting the maximum fan torque loss based on a set of predetermined fan characteristics.

Abstract: A method for controlling an engine of a system having an air-charger system connected to the engine includes sensing air-charger system temperature; comparing the air-charger system temperature to a temperature threshold; and adjusting an engine control parameter when the air-charger system temperature exceeds the temperature threshold. A system for controlling engine operation is also provided.

Abstract: An electronic device and enclosure assembly is provided for use with an engine arrangement having a plurality of cavities. The assembly comprises an enclosure including a main body having a base panel. The base panel includes a plurality of openings alignable with the cavities. An electronic device is disposable in the enclosure and has a plurality of apertures alignable with the openings and the cavities. The assembly further includes a plurality of fasteners for connecting the electronic device to the enclosure, and for connecting the enclosure to the engine arrangement. Each fastener is configured to extend through an aperture in the electronic device, through an opening in the enclosure, and into a cavity of the engine arrangement.

Abstract: A method is provided for controlling an engine of a system having an exhaust system connected to the engine, and the exhaust system includes an exhaust gas cooler. The method includes sensing exhaust system temperature downstream of the exhaust gas cooler; comparing the exhaust system temperature to a temperature threshold that is less than 200 degrees Celsius; and adjusting an engine control parameter when the exhaust system temperature exceeds the temperature threshold. A system for controlling engine operation is also provided.

Abstract: A method for controlling an engine of a system having an air-charger system connected to the engine includes sensing air-charger system temperature; comparing the air-charger system temperature to a temperature threshold; and adjusting an engine control parameter when the air-charger system temperature exceeds the temperature threshold. A system for controlling engine operation is also provided.

Abstract: An electronic device and enclosure assembly is provided for use with an engine arrangement having a plurality of cavities. The assembly comprises an enclosure including a main body having a base panel. The base panel includes a plurality of openings alignable with the cavities. An electronic device is disposable in the enclosure and has a plurality of apertures alignable with the openings and the cavities. The assembly further includes a plurality of fasteners for connecting the electronic device to the enclosure, and for connecting the enclosure to the engine arrangement. Each fastener is configured to extend through an aperture in the electronic device, through an opening in the enclosure, and into a cavity of the engine arrangement.

Abstract: The combination of an intake air supply system with an internal combustion engine having a charge air cooler, a cylinder charging air intake and an exhaust discharge is provided. The intake air supply system includes a Roots-type positive displacement blower having inlet and outlet means and an exhaust gas driven turbo-compressor connected in series with the blower. The intake air supply system further includes a bypass passage connecting the blower inlet and outlet and a valve in the bypass passage to control the flow of fluid through the bypass. The valve is operative to open and close the bypass passage in response to engine operating parameters and to modulate the flow area of the passage in response to the same engine operating parameters so as to infinitely vary the flow area between the open and closed positions of the valve.