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Cruise control interaction with deceleration fuel cutoff

A cruise control and fuel technology, applied in the direction of control devices, vehicle components, vehicle condition input parameters, etc., can solve problems such as unstable vehicle speed

Active Publication Date: 2013-06-19
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Switching DFCO mode between "on" and "off" states results in frequent and periodic accelerations and decelerations which cause jerky vehicle speeds

Method used

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  • Cruise control interaction with deceleration fuel cutoff
  • Cruise control interaction with deceleration fuel cutoff
  • Cruise control interaction with deceleration fuel cutoff

Examples

Experimental program
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Embodiment Construction

[0022] The following description is merely exemplary in nature and is in no way intended to limit the disclosure, its application, or uses. For purposes of clarity, the same reference numbers will be used in the drawings to refer to similar elements. As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A or B or C), using a non-exclusive logical or. It should be understood that steps within a method may be executed in different order without altering the principles of the present disclosure.

[0023] As used herein, the term "module" 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 providing the described functionality.

[0024] refer to figure 1 , shows a functional block diagram of a vehicle control system incorporating an exemplary cruise control system.

[0025] now refer to f...

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PUM

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Abstract

A vehicle control system includes a sensor that generates a vehicle speed signal. A cruise control system generates a cruise control signal to maintain a vehicle at a target speed. A control module compares the vehicle speed signal to the target speed signal. The control module calculates different cruise control gains to delay changes in throttle position of the cruise control system when the vehicle speed signal is greater than the target speed.

Description

technical field [0001] The present disclosure relates to vehicle cruise control, throttle control, and fuel injection control systems, and more particularly to throttle control during a deceleration fuel cutoff mode. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors to the extent described in this Background section, and aspects of the description that cannot otherwise be qualified as prior art at the time of filing, is neither expressly nor implicitly considered to be state of the art with respect to the present disclosure. have technology. [0003] Cruise control and a deceleration fuel cutoff (DFCO) system are combined in the vehicle. A cruise control system enables a vehicle to maintain a desired vehicle speed. DFCO systems disable fuel delivery to the engine during certain conditions to shut off engine power, improve fuel economy,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/17B60W10/06B60W10/10
CPCB60K31/00B60W2720/106B60W2530/18B60W2050/0011
Inventor L·王W·王Z·王
Owner GM GLOBAL TECH OPERATIONS LLC