Inventor
HAFNER GREGORY G
US17 patents
⚠️ This page may combine multiple inventors who share the name “HAFNER GREGORY G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CATERPILLAR INC
16 patentsUS6467452B1Oct 22, 2002
Method and apparatus for delivering multiple fuel injections to the cylinder of an internal combustion engine
CATERPILLAR INC102 citations98
US5492098AFeb 20, 1996
Flexible injection rate shaping device for a hydraulically-actuated fuel injection system
CATERPILLAR INC79 citations95
US5297523AMar 29, 1994
Tuned actuating fluid inlet manifold for a hydraulically-actuated fuel injection system
CATERPILLAR INC79 citations95
US6691671B2Feb 17, 2004
Method and apparatus for delivering multiple fuel injections to the cylinder of an internal combustion engine
CATERPILLAR INC24 citations92
US6491018B1Dec 10, 2002
Method and apparatus for delivering multiple fuel injections to the cylinder of an internal combustion engine
CATERPILLAR INC15 citations92
US6480781B1Nov 12, 2002
Method and apparatus for trimming an internal combustion engine
CATERPILLAR INC19 citations92
US6415762B1Jul 9, 2002
Accurate deliver of total fuel when two injection events are closely coupled
CATERPILLAR INC31 citations92
US6390082B1May 21, 2002
Method and apparatus for controlling the current level of a fuel injector signal during sudden acceleration
CATERPILLAR INC39 citations92
US6363314B1Mar 26, 2002
Method and apparatus for trimming a fuel injector
CATERPILLAR INC50 citations92
US5800130ASep 1, 1998
Pressure control system for a variable displacement hydraulic pump
CATERPILLAR INC28 citations92
US5730104AMar 24, 1998
Injection rate shaping device for a fill metered hydraulically-actuated fuel injection system
CATERPILLAR INC20 citations92
US5700094ADec 23, 1997
Bearing assembly having improved fretting and abrasion resistance
CATERPILLAR INC38 citations92
USRE40144EMar 11, 2008
Method and apparatus for delivering multiple fuel injections to the cylinder of an internal combustion engine
CATERPILLAR INC6 citations73
US5655501AAug 12, 1997
Rate shaping plunger/piston assembly for a hydraulically actuated fuel injector
CATERPILLAR INC17 citations73
US6863056B2Mar 8, 2005
Method and apparatus for trimming an internal combustion engine
CATERPILLAR INC4 citations63
US6745465B1Jun 8, 2004
Method for assembling an apparatus, such as a fuel injector, using select fit of dimensional control features
CATERPILLAR INC6 citations60