INJECTION PUMP, AND DME FUEL FEED DEVICE OF DIESEL ENGINE WITH THE INJECTION PUMP

An injection pump, comprising an injection pump element (2) having a communication route to communicate an injection pipe (3) connected to a fuel feed outlet (212) through a purge passage (242) formed in a delivery valve seat (24), a purge passage (252) formed in a plunger barrel (25), and a purge p...

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Bibliographic Details
Main Authors NOZAKI, SHINYA, USHIYAMA, DAIJO, NODA, TOSHIFUMI, HAYASAKA, YUKIHIRO
Format Patent
LanguageEnglish
Published 12.05.2005
Edition7
Subjects
BLASTING
COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
WEAPONS
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Summary:An injection pump, comprising an injection pump element (2) having a communication route to communicate an injection pipe (3) connected to a fuel feed outlet (212) through a purge passage (242) formed in a delivery valve seat (24), a purge passage (252) formed in a plunger barrel (25), and a purge port (253) with the inner peripheral surface of the plunger barrel (25), wherein, in non-injection state, a plunger (26) is rotated in circumferential direction to a rotating position allowing a purge groove (265) formed in the outer peripheral surface of the plunger (26) to communicate with the purge port (253) formed in the inner peripheral surface of the plunger barrel (25), the purge groove (265) is allowed to communicate with an oil reserving chamber (11) through a hole (263) and a cutout part (262) and, even if a delivery valve (23) is closed in the non-injection state, the injection pipe (3) is allowed to communicate with the oil reserving chamber (11).
Bibliography:Application Number: KR20047006927