Patent · US Expired

Method and apparatus for detecting the presence of a prescribed heat exchanger

US7567884B2 · kind B2 · utility

3Cited by

3References

4Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Michael-Rainer Busch · Großenhain, DE
Dirk Herbstritt · Durmersheim, DE
Andreas Miksch · Stuttgart, DE

Key dates

Filing date	Mar 23, 2005
Grant date	Jul 28, 2009
Priority date	—
Expiry date	Mar 23, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF28F2265/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and apparatus for detecting the presence of a prescribed heat exchanger, such as a catalytically active radiator, in a motor vehicle are performed during operation of the motor vehicle. The temperature of a heat-exchanger medium is observed together with further current operationally relevant parameters of the motor vehicle for a prespecified time window. An expected temperature gradient over time of the heat-exchanger medium is detected, as well as the current temperature gradient over time of the temperature of the heat-exchanger medium. The presence of a prescribed heat exchanger is detected taking into account the expected temperature gradient and the current temperature gradient.

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