Gm Global Technolgoy Operations, Inc.

Daniel G Bolstrum

Paul Alan Bauerle

Joseph M Stempnik

Richard B Jess

James L Worthing

Trenton W Haines

Pradeepan Srinivasan

Wenbo Wang

John F Van Gilder

Joseph E Ploucha

David N Belton

Marco J Gatti

Pahngroc Oh

J Oscar Aparicio, Jr

Sharon L Storch

Jonathan Packard

Christopher A Gillanders

Lyle E Hamilton

Matthew J Roelle

Richard W Amann

William E Debs

Anne M Lemoigne

Fang-Cheng J Fu

Brian S Schang

A control system for a vehicle includes an error detection module and a remedial control module. The error detection module detects whether an accelerator of the vehicle is stuck is based on vehicle speed, a position of the accelerator, and one of a pressure applied to a brake of the vehicle and a status of a parking brake of the vehicle. The remedial control module, when the accelerator is stuck, at least one of resets the position of the accelerator and decreases torque output of a powertrain system.

System and method for detecting a stuck vehicle accelerator and remedial control

An interface control module includes a link generation module that generates a first link between a provider module and a consumer module. An interface contract module generates an interface contract. The interface contract corresponds to an interface of a product that includes the first link. The interface contract defines the interface based on a bill of materials (BOM). An interface assembly module assembles modules including the provider module and the consumer module to generate the product. An interface viewing module displays logical and physical views of the product on a display at least one of before and after assembly of the product.

Software interface management systems and methods

A product-line managing module includes a code and bill of material (BOM) generator module and a configuration management module. The code and BOM generator module: receives data dictionary entries and interface information; generates a product BOM of at least one of a product based on the data dictionary entries and interface information; and generates autocode for N modules based on the data dictionary entries and interface information, where N is an integer greater than 1. The configuration management module assembles the autocode to generate the product.

Product-line based content management systems and methods

A fault clearing system and method for an engine control system includes a plurality of processor modules to control and monitor the engine and set a plurality of faults. The plurality of processor modules includes an electronic throttle control (ETC) module to control and monitor a throttle of the engine, and a plurality of engine sensors and ETC sensors. An ETC diagnostic module monitors the ETC sensors and engine sensors, with the ETC diagnostic module setting a low voltage induced fault. The ETC diagnostic module will also enter one of a plurality of low voltage states in response to the low voltage induced fault. The ETC diagnostic module selectively controls the ETC module and selectively clears the faults in the ETC module and plurality of processor modules upon entry into one of the low voltage states.

Method for operating an engine control module under low voltage conditions

A system includes an out of correlation (OOC) detection module that detects an OOC error between a first throttle position sensor (TPS) and a second TPS. An out of range (OOR) detection module that detects first and second OOR errors for the first and second TPS, respectively. An OOC counter sets an OOC error when an OOC count is greater than or equal to a first OOC value. An OOR counter sets first and second OOR errors when first and second OOR counts, respectively, are greater than or equal to a second OOR value that is less than the first OOC value. A control module increments the counters when the respective errors occur and sets at least one of the first and second OOR counts equal to the OOC count when at least one of the first and second OOR errors occur after the OOC error.

Dual throttle position sensor diagnostic system with reduced stalling

A control system for regulating operation of a first vehicle system includes first and second sensors that respectively monitor first and second operating parameters of a plurality of operating parameters, and a module that receives signals generated by the first and second sensors. The module accesses a look-up table that is normally provided to determine a first one of the plurality of operating parameters based on a second one of the plurality of operating parameters and an actual value of an input parameter. The module determines a virtual value of the input parameter while the actual value of the input parameter is equal to zero. At least one of the first and second vehicle systems is normally regulated based on the input parameter. The module regulates operation of the first vehicle system based on the virtual value of the input parameter.

Synthesized control input

A method and control system for verifying cold start emissions reduction control in a vehicle using an internal combustion engine utilizes measured engine speed and commanded ignition timing to calculate an estimated actual engine-out thermal energy flow. An expected thermal energy flow is calculated based on designed engine speed and ignition timing. A residual energy flow is calculated based on a difference between the estimated actual thermal energy flow and the expected thermal energy flow. Meanwhile, a system quality-weighting factor is calculated based on several measured engine parameters. A qualified energy flow residual is calculated based on the system quality weight and the residual energy flow. The qualified energy residual flow is accumulated, averaged based on the accumulated quality weight, and then filtered. Diagnostic control determines that if the cold start emissions reduction control is operating correctly based on the filtered averaged qualified energy flow residual comparing a predetermined range.

Method for on-board diagnosis of cold start emissions reduction control strategy

Growing community of inventors

West Bloomfield, MI, United States of America

Daniel G Bolstrum