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:
Oct. 24, 2006
Filed:
Jul. 31, 2003
Norval J. Weimken, Dwight, IL (US);
Xinshuang Nan, Bloomington, IL (US);
YE Tian, Bloomington, IL (US);
Lifeng Wang, Normal, IL (US);
Jianyuan Yang, Bloomington, IL (US);
Ronald D. Shinogle, Peoria, IL (US);
Chetan J. Desai, Bloomington, IL (US);
Norval J. Weimken, Dwight, IL (US);
Xinshuang Nan, Bloomington, IL (US);
Ye Tian, Bloomington, IL (US);
Lifeng Wang, Normal, IL (US);
Jianyuan Yang, Bloomington, IL (US);
Ronald D. Shinogle, Peoria, IL (US);
Chetan J. Desai, Bloomington, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Engineers have determined that the ability to front end rate shape injection events can result in a number of advantages, including improved injector performance and a reduction in undesirable emissions. In addition, engineers have learned that it is desirable for the needle valve to open slowly at the beginning of an injection event and to close abruptly to end the injection event. Therefore, the present invention utilizes at least one orifice member that is movably positioned in an injector body such that fluid flowing away from the needle valve member closing hydraulic surface flows through a relatively restricted flow path and fluid flowing toward the needle valve member flow through a relatively unrestricted flow path.