发明授权
US5335567A Process for controlling the actuating pressure in a control element of
an electrohydraulically controlled motor vehicle transmission
失效
用于控制电动液压控制的机动车辆变速器的控制元件中的致动压力的过程
- 专利标题: Process for controlling the actuating pressure in a control element of an electrohydraulically controlled motor vehicle transmission
- 专利标题(中): 用于控制电动液压控制的机动车辆变速器的控制元件中的致动压力的过程
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申请号: US919403申请日: 1992-07-27
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公开(公告)号: US5335567A公开(公告)日: 1994-08-09
- 发明人: Willi Seidel , Joseph Petersmann
- 申请人: Willi Seidel , Joseph Petersmann
- 申请人地址: DEX
- 专利权人: Dr. Ing. h.c.F Porsche AG
- 当前专利权人: Dr. Ing. h.c.F Porsche AG
- 当前专利权人地址: DEX
- 优先权: DEX4124603 19910725
- 主分类号: B60W10/04
- IPC分类号: B60W10/04 ; B60W10/10 ; F16H59/42 ; F16H61/00 ; F16H61/02 ; F16H61/06 ; F16H61/08 ; B60K41/18
摘要:
A process is described for controlling the actuating pressure in a control element (shift element) of an electrohydraulically controlled transmission of a motor vehicle during a change of the gear position. In the case of downshifts in the coasting operation, the hydraulic pressure in the transmission is preferably increased with the initiating of the shifting by way of the pressure control valve in a time-limited manner. Starting from a presettable or preset basic value, the amount of this filling pulse is automatically and in steps for each control operation in the course of the operation of the transmission adapted to a target value in such a manner that an input rotational speed of the transmission or a rotational speed of a driving engine connected in front of the transmission follows a predetermined sequence of movements.
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