Internal-combustion engines – Engine speed regulator – Having condition responsive means with engine being part of...
Reexamination Certificate
2005-10-18
2005-10-18
Lo, Weilun (Department: 3747)
Internal-combustion engines
Engine speed regulator
Having condition responsive means with engine being part of...
C123S467000, C123S503000, C123S514000, C123S516000, C123S525000
Reexamination Certificate
active
06955156
ABSTRACT:
In an injection pump element2, a communication route for communicating an injection pipe3connected to a fuel liquid outlet212and an inner peripheral surface of a plunger barrel25is formed by a purge passage242formed in a delivery valve seat24, a purge passage252formed in the plunger barrel25, and a purge port253. When the injection pump element2is in a non-injection state, the plunger26is rotated circumferentially to such a rotational position that a purge groove265formed in an outer peripheral surface of the plunger26and a purge port253formed in an inner peripheral surface of the plunger barrel25are communicated to each other. The purge groove265is communicated to a fuel gallery11via a hole263and a notch262. When the injection pump element2is in the non-injection state, the injection pipe3is communicated to the fuel gallery11even if the delivery valve23is closed.
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Hayasaka Yukihiro
Noda Toshifumi
Nozaki Shinya
Ushiyama Daijo
Bosch Automotive Systems Corporation
Lo Weilun
Priest & Goldstein
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