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. 07, 2006
Filed:
Aug. 30, 2002
Tan Dongming, Dunlap, IL (US);
Thomas R. Mcclure, Washington, IL (US);
Scott R. Schuricht, Normal, IL (US);
Wang Yongxin, Bloomington, IL (US);
Tan Dongming, Dunlap, IL (US);
Thomas R. McClure, Washington, IL (US);
Scott R. Schuricht, Normal, IL (US);
Wang Yongxin, Bloomington, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A fuel injector in an engine includes a spring cavity, a piston, a plunger, a spring, a fuel cavity, and a stop plate. The piston is hydraulically controlled to force the plunger down to compress fuel in the fuel cavity. However, under certain conditions, the plunger can contact the stop plate and/or the spring can become overcompressed. Both of these conditions can cause damage to the fuel injector. The present invention locates a pressure equalization channel in such a way as to dampen the motion of the piston to prevent this damage to the fuel injector.