Patent · US Expired

Method of determining the crankshaft position of an internal combustion engine

US6895931B2 · kind B2 · utility

3Cited by

6References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ingolf Rupp · Ludwigsburg, DE
Michael Lehner · Gränichen, CH
Elmar Pietsch · Kornwestheim, DE

Key dates

Filing date	Feb 3, 2003
Grant date	May 24, 2005
Priority date	—
Expiry date	Mar 9, 2023

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2041/227
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for determining the crankshaft position of an internal combustion engine is described with which, in the event of failure of the crankshaft sensor, the crankshaft position may be determined with relative precision at all times. For this purpose, the camshaft position is continuously detected by an absolute angle sensor, preferably in a defined time grid. By analyzing the camshaft positions detected in that way, a value for the instantaneous crankshaft position is determined.

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