Detroit Diesel Corporation

Tomislav Ivo Golub

Marleen F Thompson

Frank S Groer

Richard Avery

Thomas Diefenbaker

Frank Steffen Groer

Richard Michael Avery, Jr

Matthew Thomas Baird

Leopold Super

John Edward Longnecker

Peter Zagone

Brian Andrew Lewallen

Bernd Martin

A method and computer readable medium are disclosed to control operation of an internal combustion engine having an electronic control unit (ECU) with memory to burn off HC in an engine exhaust system and limit hydrocarbon and NOx content in the engine exhaust stream while operating the engine in idle mode.

Method to operate an electronically controlled internal combustion engine

A method to operate a vehicle equipped an internal combustion engine and a transmission coupled to drive wheels. The vehicle is equipped with a parking brake and has an electronic control unit with memory and the engine in fluid communication with an exhaust aftertreatment system. The method includes the steps of determining whether the engine is operating in idle mode for a predetermined period of time; determining whether NOx emissions exceed a predetermined level after the predetermined period of time; and limiting the engine speed not to exceed a predetermined engine speed until an operator engages the parking brake and engages an engine ignition switch.

Method to operate an internal combustion engine

A method to synchronize Fault Code Memory between at least a first module and a second module in an engine controller unit; each said module in electronic communication with each other and having volatile and non volatile memory; said modules in electronic communication; when compatibility of versions of static fault codes between the modules is established, the first module downloads and saves the static fault code table resident on the second module in nonvolatile memory for access by a diagnostic tool.

Method for static fault code synchronization in an internal combustion engine

A diagnostic system with a single diagnostic protocol server and multiple data source modules for an electronically controlled internal combustion engine.

Distributed automotive diagnostic system with a single diagnostic protocol server and multiple data source modules for internal combustion engines

The present invention is directed to a method to operate an internal combustion engine with electronic control wherein fault codes indicative of emissions levels may be stored in permanent memory.

Method of operation of internal combustion engine with permanent fault code implementation

A method of logging faults in an electronic controlled internal combustion engine that passes any fault readings through a debounce logic to determine whether the fault indication is real.

Monitoring unit state chart and a debounce logic

A fault code memory manager architecture for heavy duty diesel engines consisting of a dedicated monitoring unit module and at least one fault code memory manager administrator module.

Fault code memory manager architecture concept consisting of a dedicated monitoring unit module and a fault memory manager administrator module for heavy duty diesel engine

A method to operate an electronic controlled diesel engine to provide enhanced fault code administration responsive to the variable driving cycle.

Fault code memory administrator with a driving cycle state machine concept

A method for displaying engine fault conditions in a vehicle. The method includes monitoring at least one sensor, determining when at least one fault condition has occurred, and masking indication of the at least one fault condition from at least one fault display device in response to at least one instruction.

System and method for displaying engine fault conditions in a vehicle

A vehicle engine control having an automatic start and stop feature for idling the engine to maintain the battery charge includes adjustment for the battery voltage threshold at which the engine is started to recharge the battery. Preferably, the adjustment results from use of an ambient air temperature sensor and a look up table in the control that varies the threshold based on a predetermined relationship between battery voltage and ambient air temperature.

Battery voltage threshold adjustment for automatic start and stop system

An engine control practices a method for engine control in a vehicle control system having an automated start and stop system that keeps a battery charged and an engine temperature in a preselected range, the run time for the engine being extended beyond a preset run time when said control senses that a time interval between start up and the last shut off is shorter than a preset start up time limit.

Engine run time change for battery charging issues with automatic restart system

A control system for vehicle engines includes an automatic start and stop idling feature. The control starts engine running in response to detected engine conditions such as oil temperature of battery voltage in at least one mode, and in response to a thermostatic mode by a comfort thermostat in a cabin in at least a thermostat mode of operation. The thermostat mode operation is modified to terminate responses to inputs from the thermostat after an extended period for operation matches programmed threshold representative of no occupation in the area with the thermostat.

Automatic thermostat mode time limit for automatic start and stop engine control

A system and method for controlling an internal combustion engine monitor exhaust back pressure and take remedial action when the exhaust back pressure exceeds a corresponding threshold. The system and method respond to increased exhaust back pressures attributable to various causes to alert the vehicle operator and/or engage engine protection mechanisms depending on the back pressure severity level in an effort to avoid engine/component damage. Fault timers are provided for tracking time fault conditions are present and time that faults are active, with active faults being latched for the current ignition cycle. Available engine torque may be reduced in response to excessive exhaust back pressure. Anti-tampering logic is provided to detect attempts to defeat the protection feature.

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Birmingham, MI, United States of America

Tomislav Ivo Golub