Apparatus and method for retarding an engine
US4848289A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | May 2, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L13/065
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention includes an apparatus for retarding an engine. There is a mechanism, such as a master and slave cylinder arrangement, for cracking open each exhaust valve of each cylinder of the engine near top dead center of each compression stroke. There is also provision for increasing the pressure of gases in the exhaust manifold sufficiently to open exhaust valves of other cylinders on the intake stroke after each exhaust valve on the compression stroke is so opened. The provision for increasing the pressure of gases in the exhaust manifold may include retarding timing of the cracking open of the exhaust valves on the compression stroke and a valve or other device for restricting a flow of exhaust gases from the exhaust manifold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.