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. 19, 1998
Filed:
May. 07, 1996
Applicant:
Inventor:
Michael E Moncelle, Bloomington, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
239 88 ; 239124 ; 239-5 ;
Abstract
The present invention provides direct control over the opening and closing of a fuel injector nozzle valve independent of fuel injection pressure or engine operating condition and allows for initial fuel injection rate shaping by controlling the opening velocity of the nozzle valve. The present invention further allows for control over the closing velocity of the nozzle valve thereby reducing stresses on the nozzle tip as the check engages the check seat while not adversely affecting the performance of the fuel injector. This results in lower tip wear and improved life of the fuel injector.