F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
F02D 1/06 (2006.01) F02D 41/38 (2006.01) F02M 41/14 (2006.01) F02M 59/00 (2006.01) F02M 63/02 (2006.01) F04B 49/06 (2006.01)
Patent
CA 2259037
An apparatus and a method control an amount of pressurized fluid to be pumped by a high-pressure fluid pump to a common rail, by using a control circuit (ECU), in order to improve the controllability of the fluid pumping amount of the fluid pump. The ECU sets a base fluid pumping amount based on a target value of pressure in the common rail and an amount of fluid ejected from the common rail. The ECU also calculates a fluid pumping amount required to cause the actual pressure of the common rail to follow a change of a target pressure of the common rail on a basis of an amount of change of the target pressure. The ECU sets the sum of the basic fluid pumping amount, the required fluid pumping amount and a earned-over amount of fluid, as a set value of the fluid pumping amount. If the set value of the fluid pumping amount exceeds a predetermined capacity of the fluid pump, the ECU sets a difference between the set value of the fluid pumping amount and the predetermined capacity as the carried-over amount of fluid that is carried over to a next setting of fluid pumping amount, thereby reflecting the difference therebetween in a next set value of the fluid pumping amount.
Fukuma Takao
Harada Yasuo
Oda Tomihisa
Gowling Lafleur Henderson Llp
Toyota Jidosha Kabushiki Kaisha
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