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:
Dec. 29, 2015
Filed:
Sep. 30, 2010
Nicolas Alain Bader, Vaux le Penil, FR;
Frederic Brettes, Boissise le Roi, FR;
Bastien Dore, Paris, FR;
Laurent Gilbert Yves Hodinot, Cesson, FR;
Nicolas Alain Bader, Vaux le Penil, FR;
Frederic Brettes, Boissise le Roi, FR;
Bastien Dore, Paris, FR;
Laurent Gilbert Yves Hodinot, Cesson, FR;
SNECMA, Paris, FR;
Abstract
A fuel feed circuit for an aeroengine, the circuit including a high-pressure pumping system including first and second positive displacement pumps, a hydraulic actuator, and a fuel metering unit. As a function of a position of a slide of the actuator, a feed orifice of the actuator may be connected to a high-pressure delivery orifice connected to an outlet of the second pump, or to a low-pressure delivery orifice connected to a low-pressure feed line. The fuel metering unit includes through sections, one of these through sections being connected to an outlet of the high-pressure pumping system and the other through section being connected to an outlet of the high-pressure pumping system and leading to a high-pressure pilot chamber of the hydraulic actuator.