Patent · US Active

Method for diagnosing a valve of a fluid supply line to a line of an air system of a combustion engine

US9243977B2 · kind B2 · utility

0Cited by

5References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Matthias Heinkele · Weil der Stadt, DE
Michael Drung · Rochlitz, DE
Martin KROENER · Remchingen, DE

Key dates

Filing date	May 6, 2013
Grant date	Jan 26, 2016
Priority date	—
Expiry date	Sep 19, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a method for diagnosing a valve in a fluid supply line to a suction line of an air system of a combustion engine, the fluid supply line being is part of an exhaust-gas recirculation system or a crankcase ventilation system, when the valve is actuated, a first pressure in the suction line is monitored for change, and an error of the valve is detected if the change of the first pressure lies outside a specific reference range when the valve is actuated.

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