Cooling system for a motor-vehicle internal combustion engine
US6152088A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Jul 28, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2060/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cooling system for an internal combustion engine of a motor-vehicle has two separate cooling circuits for the cylinder head and the engine block. The cooling fluid which flows through the cylinder head circulates through a radiator in all operating conditions of the cooling system. The cooling fluid which flows through the engine block is instead de-routed so that it does not flow through the radiator and, when it comes out of the engine block, is fed into a conduit at the outlet from the head so that the engine block is kept at a temperature greater than that of the head. An electronic control unit controls the adjustment of a pump for activating the circulation of the cooling fluid, and a flow control valve which de-routes a portion of the cooling fluid at the outlet of the pump towards the engine block. The electronic control unit carries out the above regulations as a function of signals directed thereto from a plurality of sensors which are indicative of a number of engine operating parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.