发明名称 |
Shifting arrangement for two clutches for the shifting between a single-axle standard drive and a two-axle all-wheel drive for a motor vehicle having two drivable vehicle axles |
摘要 |
A shifting arrangement for the shifting between a single-axle standard drive and an all-wheel drive having a first clutch for the locking of a central differential gear and a second clutch for the connecting and disconnecting of one vehicle axle actuated by first and second pressure medium control element respectively against the force of a spring having first and second shift valve respectively controlled by an electronic control unit, to either supply working pressure or relieve from pressure respective control elements. The improvement including a hydraulic identifying valve for bringing the control elements into a mutual interaction. The identifying valve operates, as a function of the working pressure of at least one of the control elements and exclusively during the simultaneous controlling of both shift valves, in such a way that the clutch torque at both clutches increases and decreases approximately to the same extent. As a result, when shifting into a shift step with a balanced all-wheel drive from standard drive, a shifting can first take place for a short time into an intermediate step with a longitudinally locked all-wheel drive for securing the driving stability.
|
申请公布号 |
US4722414(A) |
申请公布日期 |
1988.02.02 |
申请号 |
US19870002951 |
申请日期 |
1987.01.13 |
申请人 |
DAIMLER-BENZ AKTIENGESELLSCHAFT |
发明人 |
ROEHRINGER, ARNO;LINK, MANFRED;FRANK, JUERGEN |
分类号 |
B60K23/08;(IPC1-7):B60K17/34 |
主分类号 |
B60K23/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|