Method of operating a piston-type internal combustion engine
US5979394A · kind A · utility
10Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | May 21, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D13/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a method of operating a piston-type internal combustion engine including cylinders with gas exchange valves of which at least some are closed when the engine is operated in an engine-driven state above a predetermined engine speed and the engine includes an electrically operated coolant circulating pump wherein the coolant circulating pump speed is controlled depending on the number of cylinders shut down during operation in the engine driven state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.