Patent · US Active

Method for diagnosing fault in a vacuum system including a check valve

US10493974B2 · kind B2 · utility

0Cited by

6References

18Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Christian Schmaler · Munich, DE
Ian Moore · Pulheim, DE

Key dates

Filing date	Sep 27, 2017
Grant date	Dec 3, 2019
Priority date	—
Expiry date	May 12, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T13/46
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for fault diagnosis of a vacuum system having a vacuum source and a vacuum consumer connected to the vacuum source via a connecting line with a non-return valve disposed in the connecting line upstream of the vacuum source. The method including indirectly determining a vacuum in the vacuum consumer based on an estimated vacuum value. Providing a flow sensor, using the flow sensor to measure a flow in the connecting line and drawing a conclusion regarding a defect based on the estimated vacuum value and the flow. An exemplary embodiment may also include a combined check valve and flow sensor.

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