Patent · US Expired

System for automatic actuation of a motor vehicle clutch

US4434879A · kind A · utility

6Cited by

5References

8Claims

0Family size

Assignee

Sachs Systemtechnik GmbH · DE

Inventors

Dieter Lutz · Schweinfurt, DE
Franz Nagler · Ottendorf, DE
Wolfgang Thieler · Haßfurt, DE
Rudy Tellert · Schweinfurt, DE

Key dates

Filing date	Jul 20, 1981
Grant date	Mar 6, 1984
Priority date	—
Expiry date	Jul 20, 2001

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D2500/7109
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A system for automatic actuation of the clutch of a motor vehicle wherein a pneumatic cylinder operates a normally engaged clutch to disengage the clutch when fluid pressure is applied to the pneumatic cylinder. A valve system operated through a control system vents the pneumatic cylinder to effect engagement of the clutch and applies fluid pressure from a fluid pressure source to disengage the clutch. The control system is responsive to the position of a clutch activating element interposed between the clutch and the pneumatic cylinder as well as to the speed of the motor of the motor vehicle. Additionally, sensors responsive to the operating condition of a manually shiftable transmission also operate to control the fluid pressure condition of the pneumatic cylinder to determine actuation of the clutch.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.