Engine cooling system and heater circuit therefor
US5419287A · kind A · utility
Inventor
Key dates
| Filing date | Nov 22, 1993 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Nov 22, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2060/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A heating system for a vehicle having an internal combustion engine comprising a cylinder head defining an upper coolant chamber and a cylinder block defining a lower coolant chamber. A heater has an inlet in fluid flow communication with the lower coolant chamber of the engine and an outlet connected to a high point of the lower coolant chamber of the engine. A pump has a low pressure side connected to the lower coolant chamber of the engine and a high pressure side connected to a radiator and to the heater. A nonvariable in-line flow restrictor is disposed between the high pressure side of the pump and the heater for limiting coolant pressure on said heater at all flow rates of said pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.