The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 2016
Filed:
Oct. 04, 2012
Applicant:
Rolls-royce Engine Control Systems Ltd., Derby, GB;
Inventor:
Daniel James Bickley, Solihull, GB;
Assignee:
ROLLS-ROYCE CONTROLS AND DATA SERVICES LIMITED, Derby, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M 69/02 (2006.01); F02C 7/232 (2006.01); F02C 7/236 (2006.01); F02C 9/26 (2006.01); F02C 9/32 (2006.01); F02C 9/36 (2006.01); F02C 7/32 (2006.01);
U.S. Cl.
CPC ...
F02M 69/02 (2013.01); F02C 7/232 (2013.01); F02C 7/236 (2013.01); F02C 7/32 (2013.01); F02C 9/263 (2013.01); F02C 9/32 (2013.01); F02C 9/36 (2013.01); F05D 2260/406 (2013.01);
Abstract
A fuel system comprises a fuel pump operable to deliver fuel through a supply line to a pressure raising valve, the pressure raising valve including a control chamber, the fuel pressure within the control chamber controlling a minimum pump pressure differential, and an actuator control servo-valve operable to control the supply of fuel from the supply line to an actuator control line, wherein the actuator control servo-valve further controls the pressure of fuel applied to the control chamber of the pressure raising valve.