Engine cooling apparatus
US4815419A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 23, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Oct 23, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F7/006
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine cooling apparatus separately cools a cylinder head and a cylinder block which are positioned around upper and lower portions of an engine combustion chamber. For increased engine output power, the engine cooling system cools the cylinder head to a relatively low temperature and the cylinder block to a relatively high temperature. The cylinder block includes cylinder liners disposed in an oil jacket which is supplied with oil from an oil circulating system via a pressure reducing valve. Oil in the oil jacket returns through a return path into an oil reservoir in the engine, and air bubbles in the oil jacket are returned to the oil reservoir via an air bubble return passage which develops a pressure difference between its opposite open ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.