Patent · US Active

Method and device for diagnosing a blowoff valve for a supercharging device of an internal combustion engine

US8997559B2 · kind B2 · utility

2Cited by

0References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Martin Brandt · Schömberg, DE
Thomas Bleile · Stuttgart, DE
Patrick Menold · Stuttgart, DE
Andreas Huber · Holzgerlingen, DE

Key dates

Filing date	Jun 3, 2013
Grant date	Apr 7, 2015
Priority date	—
Expiry date	Oct 11, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for diagnosing a blowoff valve in an engine system having a supercharged internal combustion engine, the blowoff valve being situated in a blowoff line around a compressor of a supercharging device, by performing the following: detecting a compressor rotational speed indication of the supercharging device; and determining a malfunction of the blowoff valve if the compressor rotational speed indication includes an oscillation after the blowoff valve is activated for opening the blowoff valve.

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