Apparatus and method for determining the status of a valve arrangement forming part of a fuelling system
US6651442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Jun 29, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M37/0023
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for determining the statues of a shut-off valve arrangement forming part of a fuelling system of an engine comprises a metering valve arrangement comprising a metering valve member for regulating fuel flow from a pump to the engine and a position sensor for monitoring the position of the metering valve member. The shut-off valve arrangement is operable between open and closed positions and the metering valve arrangement is operable between a maximum flow position, in which the flow of fuel through the metering valve arrangement to the shut-off valve arrangement is a maximum, and a minimum flow position in which the flow of fuel through the metering valve arrangement to the shut-off valve arrangement is a minimum. The position of the metering valve member is controlled by controlling fuel pressure acting on the metering valve member. The apparatus further comprises a first arrangement for varying fuel pressure acting on the metering valve member upon closure of the shut-off valve arrangement, and a second arrangement for monitoring the response of the metering valve arrangement to the variation in fuel pressure applied to the metering valve member so as to provide an in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.