Patent · US Expired

Cooling circuit for internal combustion engines

US4510893A · kind A · utility

25Cited by

5References

28Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Erwin Schweiger · Dachau, DE
Erwin Starmuehler · Munich, DE
Axel Temmesfeld · Raubling, DE

Key dates

Filing date	Jul 14, 1983
Grant date	Apr 16, 1985
Priority date	—
Expiry date	Jul 14, 2003

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01P2011/0266
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Cooling circuit for internal combustion engines, with an excess-pressure valve which, when the cooling circuit is under full thermal load, limits the pressure in the feed to a value at which the pressure on the suction side of the coolant pump is always above the boiling pressure of the cooling medium, even at full delivery level of the coolant pump. The efficiency of the cooling function is improved as also the structural expenditure in connection with the cooling circuit is reduced thereby and also by the central arrangement, in the filling stub, respectively, the cap thereof, of additional excess-pressure and vacuum valves, of a throttle for a venting flow, of a level float switch for the filling level indication in the cooling circuit and of a blocking device against the opening of the cap which is under pressure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.