F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
F02M 57/02 (2006.01) F02D 41/38 (2006.01) F02M 59/10 (2006.01) F02M 59/46 (2006.01) F02M 59/48 (2006.01) F02M 61/16 (2006.01) F02M 63/02 (2006.01) F02B 75/18 (2006.01) F02F 7/00 (2006.01) F02M 63/00 (2006.01)
Patent
CA 2115032
Methods of starting a hydraulically-actuated electronical- ly-controlled fuel injection system (10) are disclosed. One meth- od comprises the steps of pressurizing actuating fluid used to actuate a unit injector (18) and actuating an electrical actuator assembly (36) of the unit injector (18) to cause fuel injection on- ly when the pressure of the actuating fluid is at least equal to a selected minimum level. This method of the present invention ensures that the unit injector (18) does not diminish the pres- sure of the actuating fluid until the pressure has reached a se- lected minimum level required to effect fuel injection. This method allows the pumping capacity of the high pressure actu- ating fluid pump (332) to be minimized while ensuring quick starting of an engine (12) by the fuel system (10).
Caterpillar Inc.
Kirby Eades Gale Baker
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