Gm Global Technolgoy Operations, Inc.

Jinchun Peng

Lan Wang

Timothy John Hartrey

Christopher E Whitney

Mark Henry Costin

Richard B Jess

Joseph M Stempnik

Zhong Wang

Goro Tamai

Wenbo Wang

Jeffrey M Kaiser

James L Worthing

Kurt D McLain

Leonard G Wozniak

Robert J Genslak

William Robert Mayhew

Vivek Mehta

Bahram Younessi

Cheryl A Williams

Ian J Mac Ewen

Ronald W Van Diepen

Bruce A Rogers

Edward Stuteville

John A Jacobs

Bryan D Lehman

Weixin Yan

Jonathan Packard

Ananth Krishnan

Matthew Squire

Kevin T Sharples

Tyrus J Valascho

Robert D Peavyhouse

Xuehan Kong

Steven P Sullivan

An engine control system includes a torque request control module to determine a first engine torque request. An artificial neural network (ANN) torque request module determines a second engine torque request using an ANN model. A torque security check module that selectively generates a malfunction signal based on the difference between the first engine torque request and the second engine torque request.

Redundant Torque Security Path

A control system and method for controlling an engine includes a control module. The control module includes an evaporation control valve module closing a canister purge valve during a system diagnostic. A torque determination module determines a torque change for an end of the system diagnostic. A torque adjustment module changes an engine torque to a changed torque corresponding to the torque change. The evaporation control valve module opens the purge valve at the end of the diagnostic.

Method and apparatus for controlling engine torque during intrusive testing

A control system for an engine having a catalytic converter includes an energy calculation module that calculates a calculated mass air flow (MAF) of intake air of the engine based on a requested torque and a requested spark timing that correspond to a desired thermal energy of exhaust of the engine, and that determines an expected thermal energy of the exhaust based on the calculated MAF, and an energy residual module that determines a thermal energy residual of the exhaust based on the expected thermal energy and an estimated thermal energy of the exhaust, wherein the estimated thermal energy is based on a measured MAF of the intake air. The control system includes an energy evaluation module that determines a diagnostic result that indicates whether the catalytic converter is operating within a target temperature range based on the thermal energy residual. Related control methods are also provided.

Torque model-based cold start diagnostic systems and methods

An engine control system of a vehicle comprises a reserves module and a fault diagnostic module. The reserves module controls airflow into an engine based on a driver torque request, increases the airflow into the engine when a reserve torque request is received, and outputs a torque output command for the engine based on the driver torque request. The fault diagnostic module selectively diagnoses a fault in the reserves module when the torque output command is greater than a sum of the driver torque request, a predetermined torque, and a load applied to the engine.

Engine torque reserve system diagnostic systems and methods

An engine control system comprises a pedal torque request module, a filtering module, a selection module, and an arbitration module. The pedal torque request module determines a first pedal torque request at a first time and determines a second pedal torque request at a second time. The first time is before the second time. The filtering module determines a filtered pedal torque request based on the first pedal torque request, the second pedal torque request, and a filter coefficient. The selection module selects one of the second pedal torque request and the filtered pedal torque request. The arbitration module arbitrates between at least one driver torque request and the selected one of the second pedal torque request and the filtered pedal torque request, outputs a raw driver request based on a result of the arbitration, and controls at least one engine actuator based on the raw driver request.

Accelerator pedal torque request systems and methods

An engine system includes a throttle actuator module and a torque control module. The throttle actuator module controls a throttle actuator based on a desired throttle area. The torque control module determines an actuator torque. The torque control module determines a rate limited torque, a maximum torque, and a minimum torque based on the actuator torque and a predetermined rate of change. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is greater than the maximum torque. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is less than the minimum torque.

Securing throttle area in a coordinated torque control system

Vehicle creep control includes executing a first control scheme to determine a preferred output torque as a first function of the operator input to the brake pedal when the actual direction of vehicle travel is a first direction and the operator-selected direction of vehicle travel is also the first direction, and executing a second control scheme to determine the preferred output torque as a second function of the operator input to the brake pedal when the actual direction of vehicle travel is a second direction and the operator-selected direction of vehicle travel is the first direction.

Method and apparatus for controlling creep torque in a vehicle equipped with a hybrid powertrain system

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

A method of verifying the integrity of an arithmetic logic unit (ALU) of a control module includes inputting a first test value into one of a plurality of registers of the ALU and inputting a second test value into remaining registers of the plurality of registers. A first set of operations is performed between the one of the plurality of registers and each of the remaining registers to produce a first set of results. A fault is indicated when one of the first set of results varies from a first predetermined result.

Method of verifying integrity of control module arithmetic logic unit (ALU)

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Canton, MI, United States of America

Jinchun Peng