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:
May. 22, 2007
Filed:
Feb. 28, 2003
Ronald D. Shinogle, Peoria, IL (US);
Ronald D. Shinogle, Peoria, IL (US);
Caterpillar Inc, Peoria, IL (US);
Abstract
Engineers have come to learn that a fuel injection system with a variety of capabilities to produce a variety of injection strategies can better perform and reduce emissions at all engine operation conditions than a fuel injection system limited in its control over injection timing, number, quantity and rate shapes. According to the present invention, in order to increase the variability of available injection strategies, a fuel injection system includes at least one fuel injector fluidly connectable to at least a first common rail and a second common rail. By fluidly connecting the fuel injector to the first common rail, fuel can be injected at a first pressure. By fluidly connecting the fuel injector to the second common rail, fuel can be injected at a second pressure that is independent of the first pressure.