Patent · US Expired

Internal-combustion engine

US5209189A · kind A · utility

2Cited by

3References

4Claims

0Family size

Assignee

Kloeckner-Humboldt-Deutz AG · DE

Inventors

Hans Weitzenbuerger · Cologne, DE
Dieter Esche · Cologne, DE
Albert Nolte · Cologne, DE
Michael Klocke · Solingen, DE

Key dates

Filing date	Mar 25, 1991
Grant date	May 11, 1993
Priority date	—
Expiry date	Mar 25, 2011

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01P2003/006
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

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.

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