Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Reexamination Certificate
2005-11-01
2005-11-01
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
C123S467000
Reexamination Certificate
active
06959697
ABSTRACT:
The volume of gas bubbles required in a fuel supply path in order to prevent the fuel pressure from rising again after an electromagnetic valve is closed is estimated. For example, the required volume of gas bubbles can be estimated according to the predicted rise of the fuel temperature in the fuel supply path after the engine is stopped. Since the volume of gas bubbles depends on the opening period of the electromagnetic valve, it is possible to determine the period during which the electromagnetic valve is to be open from the estimated required volume of gas bubbles. When the engine is stopped, the electromagnetic valve is operated based on this valve opening period.
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Miller Carl S.
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
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