Decompression device
US4338893A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1980 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Apr 2, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L13/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A decompression device for an internal combustion engine having a camshaft (4) with at least one cam (21) having a base circle (20) and a lobe elevated therefrom, a valve acting at a combustion chamber, and a transmitting member, e.g., a push rod (12), transmitting the lift of the cam (21) to the valve, has a control shaft (5), a decompression cam (11) and a ratched wheel (8) connected to the control shaft (5), and a shifting member (14) interworking with the ratched wheel (8) for resetting the decompression cam (11). The decompression cam (11) is arranged between the transmitting member and a cam-free part of the camshaft (4) and the shifting member (14) is arranged eccentrically at the camshaft (4) at a distance to the axis of the camshaft (4) which is greater than half the root diameter thereof. By this arrangement it is possible to lift the transmitting member, e.g., the push rod from the base circle of the cam of the camshaft without further supplementary means, simply by turning the decompression cam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.