Patent · US Expired

Method for determining a hot-start situation in an internal combustion engine

US6874358B2 · kind B2 · utility

1Cited by

8References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Jens Wolber · Gerlingen, DE
Gerd Grass · Schwieberdingen, DE
Ruediger Weiss · Metzingen, DE
Edmund Schaut · Friolzheim, DE
Bernd Roos · Flein, DE

Key dates

Filing date	Aug 7, 2001
Grant date	Apr 5, 2005
Priority date	—
Expiry date	Aug 7, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2200/0414
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for detecting a hot start situation in an internal combustion of a motor vehicle includes the steps of determining a gradient of a temperature variation of an engine temperature; and detecting a hot start situation based on the determined gradient of a temperature variation of an engine temperature. An appropriate electronic control unit for an internal combustion engine is provided, as well as an appropriate computer program with a program code mechanism, and an appropriate computer program product with a program code mechanism.

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