Patent · US Expired

Method for diagnosing errors in an intake system of an internal combustion engine having a variable intake manifold geometry

US7184881B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Wolfgang Schulte · Monheim, DE
Gerd Kraemer · Kohlhof, DE
Heiko Konrad · Hockenheim, DE

Key dates

Filing date	Apr 5, 2006
Grant date	Feb 27, 2007
Priority date	—
Expiry date	Apr 5, 2026

Classification

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

Abstract

A method for diagnosing errors in an intake system of an internal combustion engine having a variable intake manifold geometry is provided. According to the method, an air mass flow oscillation in the intake manifold is detected at an engine rotational speed that is present, the detected air mass flow oscillation is subjected to signal analysis to determine a characteristic actual oscillation variable which is compared to a setpoint oscillation variable associated with the engine rotational speed that is present.

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