Klockner-humboldt-deutz Ag

Kloeckner-humboldt-deutz Ag

Dieter Esche

Paul Tholen

Albert Nolte

Leo Lichtblau

Michael Klocke

Hans Weitzenbuerger

Friedemann Albers

A reciprocating internal combustion engine whose thermally loaded components are cooled by a cooling liquid. The internal combustion engine has at least one cylinder with piston and a cylinder head associated therewith having an exhaust duct, as well as at least one liquid/air heat exchanger, which receives cooling-air from a cooling fan. The cooling fan (2) has a diffuser (3) and the liquid/air heat exchanger (1) is adapted to operate at an elevated cooling-air pressure of the cooling fan (2). The pressure of the cooling-liquid system and/or the composition of the cooling liquid are selected such that the boiling point of the cooling liquid lies between 110.degree. and 130.degree. C., preferably around 125.degree. C. The exhaust duct (5) in the cylinder head (4) is substantially thermally isolated from nearby regions of the cylinder head.

Internal-combustion engine

An internal combustion engine having a retarder and a heat exchanger which re-cools the retarder oil, with cooling air being supplied to the heat exchanger during the braking operation. The internal combustion engine is provided with an exhaust conduit in which is arranged a blocking device for closing off the exhaust conduit during the braking operation, with the thus retained gas flow being utilized for conveying the cooling-air flow to the retarder oil heat exchanger.

Internal combustion engine having a retarder

Growing community of inventors

Cologne, Germany

Dieter Esche