Valve controlled stroke piston combustion engine with a cam shaft
US4404937A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1981 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | Dec 8, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2275/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve controlled stroke piston combustion engine is provided with a cam shaft which supports a number of cams equal in number to the inlet and outlet valves. The individual cylinders are switched off by closing the associated inlet and outlet valves. The cams are associated with the valves and are rotatably mounted and axially non-displaceable on the cam shaft. Dogs are fixedly mounted on said cam shaft and cooperate with said cams. Each cam is provided with a front face having a concentric annular section groove with a continuously increasing depth with respect to the rotating axis of the cam shaft. The annular section groove ends have a radial abutment face; and each dog is provided with an axial protrusion on a front face facing the corresponding cam with the protrusion engaging on the abutment face during a switched on valve. Pretensionable springs are provided for the engagement and disengagement of dogs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.