Patent · US Expired

Method for checking the plausibility of the measured load in an internal combustion engine having variable valve lift control

US6588257B1 · kind B1 · utility

3Cited by

3References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ernst Wild · Oberriexingen, DE
Torsten Bauer · Leinfelden, DE
Stefan Keller · Mainaschaff, DE

Key dates

Filing date	Oct 16, 2001
Grant date	Jul 8, 2003
Priority date	—
Expiry date	Oct 16, 2021

Classification

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

Abstract

The plausibility check takes place in such a way that a first piece of load information is derived as a function of the throttle valve position and a differential pressure determined from the pressure upstream of the throttle valve and the pressure downstream of the throttle valve. In addition, a second piece of load information is derived as a function of the intake valve lift and the engine speed. The smaller of the two pieces of load information is compared with the measured load. If this measured load deviates from the load information an error of the measured load is signaled.

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