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Driveline clunk management system

A transmission system and noise technology, applied in transmission control, engine control, machine/engine, etc., can solve problems such as increasing ignition delay

Active Publication Date: 2007-04-04
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the requested torque would cause driveline noise or vibration, the torque comparator 103 commands the spark advance calculator 110 to increase the spark retard

Method used

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  • Driveline clunk management system
  • Driveline clunk management system
  • Driveline clunk management system

Examples

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Embodiment Construction

[0016] The following description of the preferred embodiments is only a demonstration of the essence and not a limitation on the application or use of the present invention. For clarity, in the drawings, the same reference numerals indicate similar elements. In this article, the term "module" refers to application-specific integrated circuits (ASICs), electronic circuits, processors (shared, dedicated or grouped) that execute one or more software or firmware programs, memory, and combinational logic circuits. , And / or other appropriate components that provide the described functions.

[0017] Referring now to FIG. 3, shown is a block diagram of an exemplary noise management system in accordance with the principles of the present invention. The driver interacts with the pedal input device 150, which provides pedal information to the torque module 152. The secondary input 154 (eg, cruise control, selected gear, etc.) is provided to the torque module 152. The torque module 152 determ...

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PUM

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Abstract

A system for reducing clunk in a driveline of a vehicle having an engine comprises a torque-based module that generates a torque request, a filter that receives the torque request from the torque-based module and that selectively modifies the torque request to reduce a rate of change of the torque request, and an engine control module that receives the modified torque request and actuates the engine to produce the modified torque request. The filter slows torque changes to a fixed rate within a range defined by an upper limit greater than zero torque and a lower limit less than zero torque. The filter applies a low-pass filter to the torque request when the torque request is greater than a cut-off value, and coefficients of the low-pass filter are selected from a table based upon the currently selected gear in the vehicle and an output of an aggressive driving evaluator.

Description

Technical field [0001] The present invention relates to the management of vibration and noise of the transmission system of a self-propelled vehicle. Background technique [0002] When the driver of the vehicle depresses the accelerator pedal, torque is requested from the engine through the transmission system. If the transmission system has previously applied little or no torque to the wheel train, such as when the vehicle is stopped or coasting, the transmission system will be slack. When torque is applied, this slack or gap will quickly disappear, causing vibration and noise between the transmission gears. The flexibility of the transmission system can allow vibration after noise, which can stress the transmission components. Even when the drive train is providing positive torque, rapid changes in torque can cause vibration. Various methods have been used to combat the problems of noise and vibration. [0003] Referring now to FIG. 1, described is a block diagram of a noise ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/14
CPCF02D2250/26F02D11/105B60W10/06F02D2041/1432F02D37/02F02D41/1497F02D41/0225B60W30/18072F02D2250/21F02D2200/606F02D2250/28B60W2050/0056
Inventor D·J·斯特罗
Owner GM GLOBAL TECH OPERATIONS LLC
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