192 clutches and power-stop control – Clutches – Operators
Patent
1989-12-19
1991-04-02
Lorence, Richard
192 clutches and power-stop control
Clutches
Operators
192 91R, F16D 2514
Patent
active
050040863
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This is a national phase application of PCT/EP88/00545 filed 21 June 1988 and based, in turn, upon a German application Ser. No. P37 21 318.0 filed 27 June 1987 under the International Convention.
FIELD OF THE INVENTION
The invention relates to a motor-vehicle clutch assembly actuated by auxiliary power and arranged between a driving engine and a gearbox, the assembly including an actuating unit controlled by a combination of controllable valves and electronic means. Various embodiments of such clutches are known--ATZ Issues 3 and 4, 1959.
BACKGROUND OF THE INVENTION
A modern clutch is known from DE-OS 34 38 594, describing a clutch control in response to a signal produced by a position transmitter via an electric positioning device--electric servomotor--and a transmitting--and receiving cylinder adjusting the clutch in order to suppress vibrations coming for instance from the driving engine.
Further, from the PCT/EP86/0544 which was not previously published, it is known to use signals coming from an electronic control device 6 in a control unit 5 for influencing an auxiliary power 50. This influenced auxiliary power 50 is directed over a duct 51 to a positioning device 4 for a clutch 1. Further, between clutch 11 and the electronic control device 6, a travel-measuring device 11 is provided. This clutch is primarily used for start-up and the same clutch according to German application P 37 10 015.7, which was not previously published either is used for the elimination or prevention of vibrations in the drive train.
As a result of electronic control of the auxiliary power, such clutches are particularly well suited for automatic motor-vehicle clutches.
However, the expense for the entire arrangement is relatively high and the arrangement has a tendency for interlinking of the individual devices.
OBJECTS OF THE INVENTION
It is therefore the object of the present invention to further develop a clutch avoiding drawbacks inherent to presently available clutches.
This problem is solved by combining the actual positioning device for the clutch with the control unit for the auxiliary power and with the integration of the travel-measuring device in one complex actuation unit resulting in a simpler more cost-efficient and easily accessible construction, which also creates big advantages during assembly. As a result of the direct connection of the solenoid valves with the actuation cylinder, the typical hose lines can be dispensed with, so that the susceptibility to potential defects is reduced. Furthermore, the functional characteristics can be improved, because the required amount of auxiliary power--compressed air, hydraulic oil, transmission oil--can be smaller than in case of separate control--and power devices. A higher operational safety results also for the travel-measuring device, since it is arranged directly on the actuating cylinder.
By combining the functions of three devices in one housing, the number of connections required for the power--and control lines is considerably reduced. Particularly advantageous is the arrangement of only one multiple plug junction for this power--and control lines, which is also used for the readings of the travel-measuring device and located between the electronic control device and the actuating unit.
If the required venting of the actuating cylinder by, at least, one solenoid valve, has a connection possibility at the actuating unit, then, for instance, in the case of compressed air it is possible not only to mount a sound damper, but also to mount a suitable extension, which makes possible the water crossing capability also with regard to the clutch and its actuation. Due to at least one solenoid valve for each actuating unit of the clutch in the actuating cylinder, a precise engagement and disengagement of the clutch is possible with respect to the path and speed, whereby one solenoid valve control the filling of the piston space and the other solenoid valve control the venting thereof, because, as a rule, the clutch is
REFERENCES:
patent: 3251439 (1966-05-01), Randol
patent: 3322248 (1967-05-01), Kaptur et al.
patent: 3379291 (1968-04-01), Randol
patent: 4234066 (1980-11-01), Toyota et al.
Fritz Walter
Petzold Rainer
Wiencek Norbert
Dubno Herbert
Lorence Richard
Zahnradfabrik Friedrichshafen AG
LandOfFree
Clutch assembly for a motor vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Clutch assembly for a motor vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clutch assembly for a motor vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-322479