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:
Jan. 23, 1996
Filed:
Sep. 02, 1994
Titus Iwaszkiewicz, Woodridge, IL (US);
Navistar International Transportation Corp., Chicago, IL (US);
Abstract
A system for controlling fuel injection in a diesel engine that includes a hydraulically-actuated, electronically-controlled unit injector (HEUI) fuel system. The injection rate/pressure characteristic of a HEUI fuel system is a function of oil supply (rail) pressure, which is independent of engine speed and load. However, transient operating conditions necessitate rapid changes in rail pressure and the prior art system does not always respond to these rapid changes fast enough. The enhanced control system of this invention incorporates a more sophisticated feed forward control term by changing the feed forward calibration from a lookup function based only on desired rail pressure to a lookup table based on desired rail pressure and RPCV flow and which has been found to be responsible for benefits in transient emissions and engine response and performance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile