Patent · US Active

Method for monitoring a coolant temperature sensor of a motor vehicle and controller

US8538623B2 · kind B2 · utility

2Cited by

7References

16Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Gerhard Eser · Munich, DE
Stefan Seyfferth · Regensburg, DE

Key dates

Filing date	Nov 30, 2010
Grant date	Sep 17, 2013
Priority date	—
Expiry date	Dec 23, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for monitoring a coolant temperature sensor of a motor vehicle is provided, wherein an actual value (TCOist=TCOSt) of a coolant temperature (TCO) is determined by a coolant temperature sensor when an internal combustion engine of the motor vehicle is started (t=tSt), and the coolant temperature sensor is diagnosed as a functional coolant temperature sensor if the actual value (TCOist) of the coolant temperature (TCO) drops briefly (tmin0) when the internal combustion engine is started (t=tSt). A controller, e.g., an engine controller, for performing such method is also provided.

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