Internal-combustion engines – Charge forming device – With fuel pump
Reexamination Certificate
2007-07-03
2009-02-10
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Charge forming device
With fuel pump
Reexamination Certificate
active
07487760
ABSTRACT:
A fuel supply apparatus for an internal combustion engine is disclosed. The fuel supply apparatus includes a fuel pump driven by the engine, a pressure accumulating device for retaining the fuel pressurized by the fuel pump, a relief device which opens when a fuel pressure in the pressure accumulating device exceeds a predetermined upper limit pressure. An injection device is connected to the pressure accumulating device and injects fuel into a combustion chamber of the engine. A fuel pressure in the pressure accumulating device is detected. A discharge amount of the fuel pump is controlled so that the detected fuel pressure coincides with a target fuel pressure. The target fuel pressure is reduced when the detected fuel pressure is equal to or greater than a predetermined fuel pressure, to suppress opening of the relief device.
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Nishio Masaki
Okayasu Kouji
Castro Arnold
Cronin Stephen K
Honda Motor Co. Ltd.
Lahive & Cockfield LLP
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