Patent · US Expired

Thermostatic valve arranged in a cooling circuit of an internal combustion engine

US6371059B1 · kind B1 · utility

5Cited by

4References

6Claims

0Family size

Assignees

Bayerische Motoren Werke Aktiengesellschaft · DE
Behr Thermot-Tronik GmbH · DE

Inventors

Heinz Lemberger · Seßlach, DE
Peter Leu · Seojong-myeon, KR
Manfred Kurz · Ditzingen, DE

Key dates

Filing date	May 26, 2000
Grant date	Apr 16, 2002
Priority date	—
Expiry date	May 26, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01P2070/04
WIPO fieldControl
WIPO sectorInstruments

Abstract

A thermostatic valve arranged in the coolant circuit of an internal-combustion engine, has a main valve which is acted upon by cold coolant flow on the one side, and by hot coolant flow on the other side. The valve is actuated as a function of the coolant temperature by way of an expansion material element equipped with an electric heating device. To minimize the coldside influence onto the expansion material element, a capsule which stores the expansion material, has an end which limits the expansion material lower at the level of the closed main valve or on the mixing chamber side. At this end, a ring-shaped or sleeve-shaped heating element is arranged coaxially adjacent the control pin, or, individual heating elements are distributed along the circumference of the control pin in an adjacent manner.

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