Gm Global Technolgoy Operations, Inc.

Bahram Younessi

Jeffrey M Kaiser

Richard B Jess

Christopher E Whitney

Michael Livshiz

Richard H Clutz

Mark D Carr

Joseph M Stempnik

Andrew W Baur

Paul Alan Bauerle

Donovan L Dibble

Mark Henry Costin

Timothy John Hartrey

Vivek Mehta

Michael L Kociba

Kerfegar Khurshed Katrak

Leonard G Wozniak

Scott Joseph Chynoweth

Louis A Avallone

William Robert Mayhew

Barbara A Shuler

Gregory J York

Michael J Pitsch

Klaus Pochner

Kevin J Storch

Jinchun Peng

Bruce A Rogers

John A Jacobs

Chad W Lehner

Bryan D Lehman

Sharon L Storch

Weixin Yan

Timothy J Braman

Donald A Eveleth

Hugh S Bauer

Ronald C Allison

Kevin T Sharples

Mark T Hutchinson

William G Howell

A control module includes a predicted torque control module that determines a desired throttle area based on a transmission torque request and a desired predicted torque. A throttle security module determines a throttle limit based on the desired throttle area and the desired predicted torque and determines an adjusted desired throttle area based on the throttle limit. A throttle actuator module adjusts a throttle based on the adjusted desired throttle area.

ECM security strategy for rationalizing and controlling increasing transmission torque requests above driver command

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

A system for limiting the speed of a vehicle includes a first module that generates a first torque signal based on a vehicle speed, a second module that generates a second torque signal based on a difference between a predetermined vehicle speed limit and the vehicle speed, and a third module that generates an output torque signal based on the first and second torque signals. The output torque signal is adapted to control the output torque of a motor.

Model based vehicle overspeed algorithm

An engine control system of a vehicle comprises a first module and a cylinder deactivation module. The first module selectively adjusts torque output by an engine based on a vehicle torque request that is greater than a driver torque request. The cylinder deactivation module selectively deactivates a cylinder of the engine when a difference between an estimated maximum torque output of the engine and the driver torque request is greater than a predetermined maximum torque.

Fast exit mode engine torque control systems and methods

An engine control system includes a spark bound module that determines a bounded spark value based on a desired spark value, a torque bound module that determines a bounded torque value based on the bounded spark value and a desired torque value, and an inverse torque calculation module that determines a desired engine air value based on the bounded torque value and the square of the bounded spark value. The engine air value may be one of a desired air-per-cylinder value and a desired manifold air pressure value. The bounded spark value and the bounded torque value are determined based on one or more of a plurality of engine actuator positions. Related methods for determining the bounded spark value, the bounded torque value, and the engine air value are also provided.

Inverse torque model solution and bounding

An engine control system comprises a torque control module and a fueling control module. The torque control module selectively generates a deactivation signal for a first cylinder of a plurality of cylinders of an engine based on a torque request. The fueling control module halts fuel delivery to the first cylinder based on the deactivation signal. The torque control module increases a spark advance of the engine at a first time after the fueling control module halts fuel injection for the first cylinder. The first time corresponds to an initial time combustion fails to occur in the first cylinder because fuel delivery has been halted.

Cylinder fueling coordination for torque estimation and control

A fault system for flexible fuel systems is provided. The system includes: a fault monitor module that monitors fuel estimation inputs and detects fuel estimation faults; and a fuel estimation module that selectively estimates a concentration level based on whether a fuel estimation fault is detected.

Flexible fuel prediction and driver message display

A control system for a vehicle includes a first counter that indicates a first count of a number of cylinders of an engine of the vehicle that are fueled. A second counter indicates a second count of the number of cylinders that are fueled. A control module determines a secure count based on the first count and the second count. The control module adjusts torque output of the engine based on the secure count.

Secured count of cylinders fueled in a coordinated torque control system

A method of controlling a torque output of an internal combustion engine includes determining a pressure ratio, determining a reference torque based on the pressure ratio and a torque request, calculating a desired throttle area based on the reference torque and regulating operation of the engine based on the desired throttle area to achieve the desired torque.

Engine torque control at high pressure ratio

Apparatus are provided for robust power take off (PTO) and/or cruise enable. The apparatus includes a control module for PTO enable having a first input connected to one of a first reference voltage and a second reference voltage, and a second input connected to one of the first reference voltage and the second reference voltage. An inverse reference voltage operator is connected to both of the inputs and configured such that the second input is connected to the second reference voltage when the first input is connected to the first reference voltage and the second input is connected to the first reference voltage when the first input is connected to the second reference voltage. Based on the received voltage at the first and second inputs, the control module enables/disables PTO and/or cruise.

Robust power take-off and cruise enable

A torque control system for regulating operation of an engine includes a throttle that regulates air flow into the engine and a device that regulates a torque output of the engine. A first module determines a throttle area based on a desired manifold absolute pressure (MAP) and a desired manifold air flow (MAF) and a second module determines a device set-point based on a desired air per cylinder (APC) and an engine speed. A third module generates a throttle control signal to control the throttle based on the throttle area and generates a device control signal to control the device based on the device set-point.

Coordinated engine torque control

A torque control system for regulating operation of a displacement on demand engine that is operable in an activated mode and a deactivated mode includes a throttle that regulates air flow into the engine and a cam phaser that regulates a torque output of the engine. A first module determines a throttle area based on a desired deactivated manifold absolute pressure (MAP) and a desired mass air flow (MAF) and a second module determines a desired cam phaser position based on an engine speed and a transitional air per cylinder (APC) that is determined based on one of a desired deactivated APC and desired activated APC. A third module generates a throttle control signal to control the throttle based on the throttle area and a fourth module generates a cam phaser control signal to control the cam phaser based on the desired cam phaser position.

CAM phaser and DOD coordination for engine torque control

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Farmington, MI, United States of America

Bahram Younessi