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:
Mar. 06, 2007
Filed:
Mar. 24, 2005
Jeffrey T. Gardner, Woodland Park, CO (US);
Guy Robert Babbitt, Colorado Springs, CO (US);
Jeffrey A. Rogers, Woodland Park, CO (US);
Gary Mansouri, Bothell, WA (US);
Jonathan J. Lorenzen, Colorado Springs, CO (US);
Oded Eddie Sturman, Woodland Park, CO (US);
Jeffrey T. Gardner, Woodland Park, CO (US);
Guy Robert Babbitt, Colorado Springs, CO (US);
Jeffrey A. Rogers, Woodland Park, CO (US);
Gary Mansouri, Bothell, WA (US);
Jonathan J. Lorenzen, Colorado Springs, CO (US);
Oded Eddie Sturman, Woodland Park, CO (US);
Sturman Industries, Inc., Woodland Park, CO (US);
Abstract
High efficiency, high pressure fixed displacement pump systems and methods of control. A typical application is for engine driven high pressure pumps for powering loads such as fuel injectors and/or hydraulic engine valve actuators. The pump systems include a control valve controllably coupling the pump output back to the pump input to stop the pumping when the desired pressure of the output is reached. Reinitiating pumping an increment in crankshaft angle before a load event based in the increment in pressure needed to reach the desired pressure at the crankshaft angle of the load event provides a simple control algorithm assuring accurate repeatability in the pressure at the beginning of a load event. Pumping throughout the load event minimizes the decrease in pressure during the load event. Providing underlap in the control valve minimizes pressure peaks and maximizes efficiently when starting and stopping the pumping action. Various embodiments are disclosed.