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Shift and throttle management during cruise control

A cruise control and throttle technology, applied in the direction of engine control, etc., can solve the problems of not considering the external variables of vehicle acceleration and difficult cruise control calibration

Inactive Publication Date: 2008-03-05
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PI control does not consider external variables on vehicle acceleration and assumes that the only vehicle acceleration input is throttle position
Therefore, it is difficult to perform a cruise control calibration to maintain a desired vehicle speed while providing an acceptable level of ride comfort

Method used

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  • Shift and throttle management during cruise control
  • Shift and throttle management during cruise control
  • Shift and throttle management during cruise control

Examples

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Embodiment Construction

[0015] The following description of the preferred embodiments is merely illustrative in nature and does not limit the invention, its application or uses. For the sake of clarity, the same reference numbers in the figures refer to the same elements. As used herein, the term module and / or device refers to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated or group) and memory, a combination of Logic circuits and / or other suitable components that may provide the described functionality.

[0016] Referring now to FIG. 1 , a typical vehicle system 10 is shown. The vehicle system includes an engine 12 driving a transmission 14 through a coupling device 16 . More specifically, air is drawn through a throttle valve 18 and into an intake manifold 20 which distributes the air to cylinders (not shown). Air is mixed with fuel at the desired air-to-fuel (A / F) ratio, and the A / F mixture is combusted in the cylinders to produce drive t...

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Abstract

A control system for regulating operation of a vehicle having a transmission driven by an engine during a cruise control mode includes a first module that determines an operating point of the vehicle and that compares the operating point to one of a shift line and a torque converter clutch (TCC) release line. A second module regulates a throttle of the engine to maintain the operating point a threshold distance from the one of the shift line and the TCC release line, when the operating point is at the threshold distance.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 60 / 794,797, filed April 25, 2006. The content of the above application is incorporated herein by reference. technical field [0003] The present application relates generally to engine throttle control, and more particularly to engine throttle control during cruise control. Background technique [0004] Internal combustion engines combust a fuel-air mixture within cylinders to drive pistons to produce drive torque. The engine drives the transmission through the coupling. Air is drawn into the engine and metered by the throttle. The transmission may include an automatic transmission such that transmission shifting may be adjusted using the control module based on vehicle operating conditions. Alternatively, the transmission may comprise a manual transmission such that gear changes may be manually performed by a vehicle operator. [0005] Use a cruis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/10B60W30/14B60W10/11
CPCB60W10/06B60W10/11
Inventor D·A·斯塔姆B·A·舒勒
Owner GM GLOBAL TECH OPERATIONS LLC
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