Inventor
PERR JULIUS P
US50 patents
⚠️ This page may combine multiple inventors who share the name “PERR JULIUS P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CUMMINS ENGINE CO INC
49 patentsUS5329908AJul 19, 1994
Compressed natural gas injection system for gaseous fueled engines
CUMMINS ENGINE CO INC112 citations98
US5899389AMay 4, 1999
Two stage fuel injector nozzle assembly
CUMMINS ENGINE CO INC153 citations97
US5404855AApr 11, 1995
Variable displacement high pressure pump for fuel injection systems
CUMMINS ENGINE CO INC120 citations96
US5002022AMar 26, 1991
Valve control system with a variable timing hydraulic link
CUMMINS ENGINE CO INC83 citations96
US5979803ANov 9, 1999
Fuel injector with pressure balanced needle valve
CUMMINS ENGINE CO INC80 citations95
US5983863ANov 16, 1999
Compact high performance fuel system with accumulator
CUMMINS ENGINE CO INC109 citations94
US5441027AAug 15, 1995
Individual timing and injection fuel metering system
CUMMINS ENGINE CO INC71 citations94
US5419492AMay 30, 1995
Force balanced electronically controlled fuel injector
CUMMINS ENGINE CO INC67 citations94
US5094397AMar 10, 1992
Unit fuel injector with injection chamber spill valve
CUMMINS ENGINE CO INC22 citations93
US5033442AJul 23, 1991
Fuel injector with multiple variable timing
CUMMINS ENGINE CO INC32 citations93
US5029568AJul 9, 1991
Injection rate control injector
CUMMINS ENGINE CO INC25 citations93
US4934344AJun 19, 1990
Modified four stroke cycle and mechanism
CUMMINS ENGINE CO INC29 citations93
US4911127AMar 27, 1990
Fuel injector for an internal combustion engine
CUMMINS ENGINE CO INC40 citations93
US4909197AMar 20, 1990
Cam follower assembly with pinless roller
CUMMINS ENGINE CO INC42 citations93
US4721247AJan 26, 1988
High pressure unit fuel injector
CUMMINS ENGINE CO INC29 citations93
US4463901AAug 7, 1984
Unit fuel injector having independently controlled timing and metering
CUMMINS ENGINE CO INC29 citations93
US4249499AFeb 10, 1981
Timing mechanism for a fuel supply system
CUMMINS ENGINE CO INC44 citations93
US4062332ADec 13, 1977
Compression brake for internal combustion engine
CUMMINS ENGINE CO INC32 citations93
US3951117AApr 20, 1976
Fuel supply system for an internal combustion engine
CUMMINS ENGINE CO INC40 citations93
US6557779B2May 6, 2003
Variable spray hole fuel injector with dual actuators
CUMMINS ENGINE CO INC53 citations92
US5518030AMay 21, 1996
Three-way flow valve with variable drain orifice area
CUMMINS ENGINE CO INC21 citations92
US5076236ADec 31, 1991
Fuel cutoff for better transient control
CUMMINS ENGINE CO INC22 citations92
US5042445AAug 27, 1991
Electronic controlled fuel supply system for high pressure injector
CUMMINS ENGINE CO INC50 citations92
US4971016ANov 20, 1990
Electronic controlled fuel supply system for high pressure injector
CUMMINS ENGINE CO INC23 citations92
US5765755AJun 16, 1998
Injection rate shaping nozzle assembly for a fuel injector
CUMMINS ENGINE CO INC36 citations90
US5301875AApr 12, 1994
Force balanced electronically controlled fuel injector
CUMMINS ENGINE CO INC27 citations89
US4986472AJan 22, 1991
High pressure unit fuel injector with timing chamber pressure control
CUMMINS ENGINE CO INC25 citations89
US5619969AApr 15, 1997
Fuel injection rate shaping control system
CUMMINS ENGINE CO INC45 citations88
US5353766AOct 11, 1994
Distributor for a high pressure fuel system
CUMMINS ENGINE CO INC21 citations88
US5445323AAug 29, 1995
High pressure fuel injector including a trapped volume spill port
CUMMINS ENGINE CO INC26 citations86
US5611317AMar 18, 1997
Open nozzle fuel injector having drive train wear compensation
CUMMINS ENGINE CO INC18 citations84
US4471909ASep 18, 1984
Miniaturized unit fuel injector
CUMMINS ENGINE CO INC23 citations82
US4176641ADec 4, 1979
Aneroid for a turbocharged engine
CUMMINS ENGINE CO INC22 citations82
US4093046AJun 6, 1978
Exhaust braking apparatus
CUMMINS ENGINE CO INC20 citations82
US4206734AJun 10, 1980
Adjustable timing mechanism for fuel injection system
CUMMINS ENGINE CO INC21 citations81
US5076240ADec 31, 1991
Articulated open nozzle high pressure unit fuel injector
CUMMINS ENGINE CO INC11 citations74
US4944275AJul 31, 1990
Fuel injector train with variable injection rate
CUMMINS ENGINE CO INC10 citations74
US4909219AMar 20, 1990
Hydromechanical fuel pump system
CUMMINS ENGINE CO INC7 citations74
US4410137AOct 18, 1983
Miniaturized unit fuel injector employing hydraulically controlled timing
CUMMINS ENGINE CO INC12 citations74
US4395979AAug 2, 1983
Pressure limiting hydraulic tappet
CUMMINS ENGINE CO INC7 citations74
US4207035AJun 10, 1980
Turbocharger assembly
CUMMINS ENGINE CO INC13 citations74
US4149506AApr 17, 1979
Fuel injector
CUMMINS ENGINE CO INC7 citations74
US4134549AJan 16, 1979
Injectors of a fuel supply system for an internal combustion engine
CUMMINS ENGINE CO INC15 citations74
US3965875AJun 29, 1976
Fuel injection system for diesel engines
CUMMINS ENGINE CO INC11 citations74
US5954029ASep 21, 1999
Unit fuel injector having constant start of injection
CUMMINS ENGINE CO INC7 citations72
US4962743AOct 16, 1990
Injection rate control cam
CUMMINS ENGINE CO INC15 citations72
US5713335AFeb 3, 1998
Variable injection timing and injection pressure control arrangement
CUMMINS ENGINE CO INC12 citations71
US4038956AAug 2, 1977
Fluid pressure regulator
CUMMINS ENGINE CO INC4 citations62
US4062230ADec 13, 1977
Fuel mileage indicator
CUMMINS ENGINE CO INC4 citations56