Thermostatic valve and method for controlling a coolant circuit

US6843210B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Werner Engelin · Eßlingen, DE
• Hartmut Engels · Wolfschlugen, DE
• Erhard Rau · Weilheim, DE
• Jochen Weeber · Echterdingen, DE
• Frank Weinert · Wimsheim, DE

Key dates

• Filing date: Feb 13, 2003
• Grant date: Jan 18, 2005
• Expiry date: May 4, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01P2060/08
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A thermostatic valve for a coolant circuit of an internal combustion engine, with a housing through which the flow is capable of passing and which has a first throughflow orifice for connection to a first coolant line, a second throughflow orifice for connection to a second coolant line, and a third throughflow orifice for connection to a third coolant line, and with a closure member which is mounted in the housing and which can be adjusted by an actuating unit, the closure member having a first shut-off element for shutting off the first throughflow orifice and a second shut-off element, coupled to the first shut-off element, for shutting off the second throughflow orifice. The second shut-off element is assigned an adjusting device, via which the second shut-off element can be adjusted relative to the first shut-off element in such a way that the closure member can be brought, on one hand, into a passage position in which it can close exactly one throughflow orifice, and, on another hand, into a shut-off position, in which it can close two throughflow orifices.