DE3229369A1 - FRICTION COUPLING FOR INTERNAL COMMERCIAL ENGINE DRIVEN VEHICLES - Google Patents

Description

SACHS SYSOSMiPBCHNIK GMBH, SCHWEINPORT / MAIN

PATENT AND GEBRAUCHSMUSTBR-HILPSANMELDIJNg

FRICTION CLUTCH

FOR

COMBUSTION MACHINERY DRIVEN

VEHICLES

The invention relates to a friction clutch for internal combustion engines Vehicles? in particular motor vehicles with a gearbox, consisting of, among other things. from a clutch disc with torsional vibration damper.

Clutch disks with torsional oscillations are generally known in friction clutches of motor vehicles with internal combustion engines. On the one hand, they serve to reduce the degree of irregularity of the internal combustion engine in load operation
to protect the transmission elements and they also serve other

* · OC

On the other hand, when the clutch is usually engaged and the gear shaft with -Sen., with it in rotation, L - iu ^ g gears rotating with idle HQrs & number of the internal combustion engine, in addition to gear noises just in idling operation ⁿ j.:rierirücken. The state of the art knows a number of proposed solutions, for example the German utility model So o4 341, in which centrifugal force-dependent switching devices are provided, which above the idling speed änciersi the characteristics of a vibration damper according to the needs of load operation and -below the Lesrlavf- Speed produce a coordination which especially meet the requirements in idle operation. Vibration dampers of this type are extremely complicated, expensive to manufacture and there is a risk that the service life does not correspond to expectations. Torsional vibration dampers of this type are preferred used in conjunction with DIESBL internal combustion engines because they have a strong Ungieichförraigkeitsgrad especially at idle So Zzom ^ ct ώ, -.. .: 3 se dsr additional extra expense for a "DIESEL engine also - ocfe srl ^ e Mehreiisgabe for the elaborate TorsionsschwingungsdäapS ^ . _ ausanas-ea.

It is the task of the present invention in the case of internal combustion engine-driven Vehicles ailgesr ^ in, especially with those with DIESEL internal combustion engine p. to make an arrangement that is without e great effort ensures the necessary "torsional vibration damping.

This object is achieved according to the characteristic of the main claim. Dvrsli ciie automatic disengagement of the friction clutch during idling operations of the internal combustion engine is achieved, ά? .2 the clutch disc with the gear shaft in idle mode κ! "I more sows the clutch and the crankshaft of the internal combustion engine revolve around black. As a result, the vibration dampers, which are costly according to the prior art, can be used

fought noises no longer arise. At the same time is it is possible to use simple, torsional vibration dampers for the load range to be used as they are for both OTTO internal combustion engines as well as for DIESEL internal combustion engines. This creates a unified «» ;! or a substantial discount achieved

\ The clutch can be operated by a servo motor,

the control pulse via an in the transmission Neten sensor received, which indicates the idle position. In the case of a semi or fully automatic clutch actuation, a Such a servomotor is already available for actuating the clutch.

However, it is also easily possible to switch to a conventional one non-automatic clutch actuation proposed here to arrange automatic actuation in parallel in idle mode. Concerns about the durability of the releaser are superfluous, because there have been clutches for some time in which the rotating parts of the Auerückere constantly rotate and these releasers are also constantly subjected to a low preload are.

^ The invention is explained using a schematic representation. the Representation shows schematically a friction clutch 1 with a flywheel 4, which © with the crankshaft 5 of an internal combustion engine is firmly connected. In the flywheel 4 is a pressure plate rotatably but axially displaceable arranged by a diaphragm spring 18 is acted upon * Ate diaphragm spring 18 is supported on its outer circumference on the pressure plate 17 and on a smaller one Circumference on the flywheel 4. Between the pressure plate 17 and the flywheel 4 can thus be clamped in a clutch disc 2. This clutch disc 2 has a torsional vibration damper 3 and it is rotatable, but axially displaceable the transmission shaft 6 arranged. The gear shaft 6 leads into the

3223369

Transmission 7 and from there the output continues to c?, Ii driven wheels. In the transmission 7 with the shift lever 3, a sensor 9 is arranged, which emits a signal when the Is ^ rIa: fposition is set via the shift lever 8. The signal arrives at a servomotor 14, which is connected in parallel with the release system of the friction clutch 1. Via a linkage 15, he actuates the outer & galbel 1o, which in turn acts on the releaser 11 and the diaphragm spring 18 for insertion and return. Disengaging the friction clutch 1. In the usual way, a clutch pedal 13 and a linkage 16 are arranged parallel to the servomotor 14 and to the Qsst & noe 15. By oil automatic actuation of the servo motor 14 when idling, the friction clutch 1 is disengaged and the clutch disc 2 with the torsional vibration oeäiirofer 3 for the load range, as well as the gear shaft 6, are no longer driven by the crankshaft 5 from the flywheel 4. The dreaded idling noise © cannot stand thereby. The torsional vibration damper 3 can be designed so that it is only effective under load.

21.o7.1982

F R P - 2 Ho / SJc-

lee

r s e i t e

Claims (1)

ο ~ -? 'λ ς C q ν > . "ϊ. --JO \ JJ PATSNTASrSPROCHB For vehicles driven by pulp power machines, in particular motor vehicles with a gearbox, consisting, inter alia, of a clutch disc with torsional vibration damper, characterized in that the torsional damping device (3) is designed to dampen the vibrations that can be transmitted under load and. during idling operation of the Brennkr & RDI & shat the friction clutch (1) is disengaged an automatic actuator (14 _f 15). 2. ^ ■ ^s .ib7j.ngskiTOplt'.nr n & dtt Assssspring 1, characterized in that d; - " lie. Au *; c-5a ^ isch-3 actuation preferably as a servo motor " *} £ v ^ is formed, which can be actuated via a sensor (9) which detects the idle position (?). 3. - friction clutch SSAC:> EQS claims 1 and 2, characterized in that the automatic actuation DLE "(14, 15) additionally vm & zv an already parallel.." Existing clutch actuation "(13, 16) is provided!. 21.o7. 1982 F R P - 2 Ho / Sk-