Apparatus and method for compression release retarding of an engine
US4741307A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1987 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Feb 17, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2800/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is provided a method and apparatus for compression release retarding of an internal combustion engine. The apparatus opens an exhaust valve of each cylinder of the engine during a compression stroke and near the top dead center position. An exhaust valve of a second cylinder is open while the exhaust valve of the first cylinder is so open, the second cylinder being on its intake stroke. The apparatus may open the normally closed exhaust valves of a set of cylinders for a period of time when any of the cylinders is near the top dead center position following its compression stroke, during this time at least one of the cylinders of the set being on its intake stroke and all of the cylinders of the set being on the exhaust stroke, the intake stroke or the expansion stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.