Method and apparatus for determining the extent of internal wear in a fuel pump of a fuel system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 27, 2009
Grant Date -
May 17, 2007
app pub date -
Nov 1, 2006
filing date -
Nov 11, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of operating a fuel system to determine the extent of internal wear of a fuel pump thereof comprises driving the fuel pump, moving a metering valve member to a closed position in which the metering valve bears against a resilient stop, increasing the operating speed of the fuel pump to increase the pressure applied to the metering valve member urging the valve member towards the resilient stop to a point beyond which further movement of the metering valve member occurs, sensing when the further movement of the metering valve member occurs, and sensing the operating speed of the pump at the time when the further movement occurs.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully