Patent · US Active

Expansion reservoir for a coolant circuit

US8857468B2 · kind B2 · utility

3Cited by

7References

6Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Uwe Haas · Wernau, DE
Thomas Anzenberger · Ingolstadt, DE

Key dates

Filing date	Jul 15, 2011
Grant date	Oct 14, 2014
Priority date	—
Expiry date	Jul 15, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86509
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Expansion reservoir (1) for a coolant circuit, having a fill opening (3) that can be closed by a lid (2) and is located in the geodetically upper region of the expansion reservoir (1), wherein a differential-pressure-controlled valve (4) having at least two switching positions is integrated into the lid (2), and having at least one inlet port (5) which opens into a lid region (10), and an outlet port (6) in the geodetically lower region of the expansion reservoir (1), wherein the inlet port (5) is closed by the valve (4) in a first switching position and is opened in at least one second switching position, thus allowing the inlet port (5) to vent into the expansion reservoir (1).

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