Gm Global Technolgoy Operations, Inc.

Jonathan Packard

Joseph M Stempnik

Paul Alan Bauerle

Mark Henry Costin

Robert J Genslak

Scott R Jeffrey

Marco J Gatti

Pahngroc Oh

Jinchun Peng

Ronald W Van Diepen

Daniel G Bolstrum

Bryan D Lehman

Xuehan Kong

Anne M Lemoigne

A system according to the principles of the present disclosure includes a storage capability module and at least one of an engine speed control module and a spark control module. The storage capability module determines a capability of a catalytic converter to store oxygen. The engine speed control module controls a speed of an engine based on the oxygen storage capability of the catalytic converter. The spark control module controls a spark timing of the engine based on the oxygen storage capability of the catalytic converter.

System and method for controlling an engine based on an oxygen storage capability of a catalytic converter

An engine control system comprises a driver axle torque request module (DATRM) and a driver axle torque security module (DATSM). The DATRM determines a pedal torque request based on minimum and maximum scaling torques and a torque scalar. The DATRM determines a raw driver torque request. The DATRM selectively shapes raw driver torque request into a final driver torque request. The DATRM converts the final driver torque request into a first axle torque request. The DATSM selectively diagnoses a fault in the first axle torque request based on a minimum engine torque, the minimum scaling torque, a first comparison of the final driver torque request and the redundant final driver torque request, and a second comparison of the first axle torque request and a redundant axle torque request.

Securing driver requested torque

An engine control system includes a status determination module that determines states of first and second throttle position sensors (TPSs), wherein a fault state includes when one of the first and second TPSs is one of outside of a predetermined range and out of correlation with the other of the first and second TPSs, for greater than a first predetermined period. A throttle actuation module opens a throttle when an engine manifold absolute pressure (MAP) is less than a predetermined MAP threshold, at least one of the first and second TPSs is in the fault state, and the other one of the first and second TPSs is within a second predetermined period from transitioning to the fault state.

Systems and methods for electronic throttle control

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

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Madison Heights, MI, United States of America

Jonathan Packard