Patent · US Expired

System for heating the service cabin of a machine operated by an internal cumbustion engine

US4407449A · kind A · utility

16Cited by

1References

5Claims

0Family size

Assignee

Klockner-Humboldt-Deutz AG · DE

Inventors

Gottfried Moser · Wittlich, DE
Walter Nau · Cologne, DE
Ernst D. Neumann · Aachen, DE

Key dates

Filing date	Oct 28, 1981
Grant date	Oct 4, 1983
Priority date	—
Expiry date	Oct 28, 2001

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01M5/001
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A heating system for the service cabin of a machine operated by an internal combustion engine includes a high-pressure supply pump for feeding oil from the engine oil sump through an oil conduit and returning it thereto, a pressure-reducing element in the conduit for elevating the temperature of the oil, a line by-passing the element and having a flow control valve therein, a heat exchanger connected into the conduit downstream of the element, the pump being located within the internal combustion engine together with its high pressure line to thereby confine any high pressure leaks from such line to the interior of the engine and its oil sump.

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