Emergency hydraulic control for a clutch arranged between an internal combustion engine and a gear box
US6467262B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Sep 22, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2048/0254
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic emergency control (10, 10a, 10b, 10c) for a hydraulically actuated clutch (14) arranged between an internal combustion engine (12) is proposed. A pump (16) driven by the internal combustion engine (12) feeds a work line (18) in which a choke (20, 20b, 20c) is arranged. A regulating valve (22, 22a, 22b, 22c) is provided for controlling the clutch (14) at least in the event of failure of the electric supply. A first control line (26) is connected by a first control input (S1) of the regulating valve (22, 22a, 22b, 22c) with the work line (18) in front of the choke (20, 20b, 20c) with respect to the feed direction. A second control line (30) is connected by a second control input (S2) of the regulating valve (22, 22a, 22b, 22c) with the work line (18) behind the choke (20, 20b, 20c) with respect to the feed direction. Through the use of a regulating valve (22, 22a, 22b, 22c), a variable control of the clutch (14) is possible also in emergency operation. In all, very few structural component parts are required for this purpose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.