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A method and apparatus for controlling clutch engagement

A clutch and meshing technology, applied in the field of clutches, can solve problems such as clutch loss

Inactive Publication Date: 2016-03-09
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Therefore, with all types of RSS systems, there is a risk that the clutch is constantly engaged at large speed differences, which leads to additional losses in the clutch

Method used

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  • A method and apparatus for controlling clutch engagement
  • A method and apparatus for controlling clutch engagement
  • A method and apparatus for controlling clutch engagement

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] first reference figure 1 , which shows a motor vehicle 1 with a rolling stop-start system (RSS). The motor vehicle 1 comprises an engine 2 driving a clutch 3, a multi-speed manual transmission 5 with an input shaft (not shown) driven by the clutch, and clutch control means.

[0036] As used herein, the term "manual transmission" refers to a transmission in which the various gear ratios are manually selected by the driver of the vehicle.

[0037] The clutch control comprises a hydraulic drive system comprising a master cylinder 8 operable by a clutch pedal 7 , a slave cylinder 9 , an electronically controlled valve 12 and a drive mechanism 4 in the form of a release lever and release bearing, and an electronic control unit 10 . The electronic control unit 10 has multiple inputs including engine speed input from engine speed sensor 11, gear selection sensor 6, vehicle speed input from wheel sensor 13 and other inputs such as figure 1 Accelerator pedal position and brake...

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PUM

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Abstract

A method and apparatus of controlling an engagement of a clutch 53 of a motor vehicle 51 in which during a free rolling start, if a transmission ratio of a manual transmission 55 selected for the engagement is currently unsuitable, the engagement of the clutch 53 is inhibited. The engagement of the clutch 53 may be inhibited by preventing engagement of the clutch 53 until a speed of an engine 52 connected to the manual transmission 55 is predicted to fall within a predefined speed range. A human machine interface 66 is connected to an electronic control unit 60 which controls the clutch, e.g. an e-clutch 53, and provides to a driver an indication that the selected gear is unsuitable. The clutch 52 is engaged / disengaged by a hydraulically operated slave cylinder 59 and inhibiting engagement of the clutch 53 comprises preventing release of hydraulic pressure from the cylinder 59.

Description

technical field [0001] The present invention relates to a motor vehicle having stop-start control and, in particular, the invention relates to controlling the clutch of such a motor vehicle during a freerolling start. Background technique [0002] For motor vehicles with manual transmissions using Rolling Stop-Start (RSS) technology, in which the engine is switched off while the vehicle is moving to enable "freestart", there is a risk, however, that It is that the driver may select an inappropriate gear and engage the clutch when free rolling is in effect. [0003] Free rolling start herein refers to restarting the engine when the vehicle is moving and the clutch is engaged to provide a drive path from the engine to the road. As will be discussed below, the transmission may remain in gear while the vehicle is free rolling or may be in neutral while the vehicle is free rolling. [0004] There are mainly two types of manual transmission RSS systems, namely Stop-in-Neutral (S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/04F16H61/16
CPCB60W30/18072B60W30/1884B60W50/14B60W2030/1809B60W2510/0638B60W2510/0647B60W2510/1005B60W2520/10B60W2710/023B60Y2400/71F16D2500/504F16D2500/5085F16D2500/70424F16D2500/7101F16D2500/7105B60W50/082B60W50/10
Inventor 塞米·菲利蒙·彼得里迪斯伊恩·哈勒隆彼得·乔治·布里特马丁·罗伯克斯克
Owner FORD GLOBAL TECH LLC