Patent · US Active

Method and device for operating an internal combustion engine

US8209112B2 · kind B2 · utility

2Cited by

9References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Dirk Hartmann · Aßling, DE
Georg Mallebrein · Stuttgart, DE
Nicolas Ide · Ludwigsburg, DE
Andreas Roth · Karlsruhe, DE
Lutz Reuschenbach · Stuttgart, DE
Frank Schiller · Amberg, DE
Markus Deissler · Heilbronn, DE
Michael Drung · Rochlitz, DE

Key dates

Filing date	Sep 29, 2006
Grant date	Jun 26, 2012
Priority date	—
Expiry date	Apr 11, 2028

Classification

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

Abstract

A method and a device are provided for operating an internal combustion engine which allow for an improved diagnosis of the valve mechanism of cylinders of the internal combustion engine. For this purpose, a variable characteristic of a suction performance of a cylinder of the internal combustion engine is ascertained. The variable characteristic of the suction performance is ascertained as a function of the mass flow flowing into an intake manifold of the internal combustion engine and of a change of the intake manifold pressure during an intake phase of the cylinder.

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