TWO-STAGE FUEL INJECTION VALVE

WIPO Patent Application WO/2012/020999

A2

The present invention relates to a two-stage fuel injection valve. The two-stage fuel injection valve of the present invention is configured such that the pressure of main fuel delivered from an injection pump is applied to a plunger (400) in a main fuel chamber (206), and subsequently delivered to an ancillary fuel pressure chamber (302) via the plunger (400) so as to compress ancillary fuel, such that a needle (400) is retracted in a manner similar to those of slide valves by means of the pressure of the ancillary fuel so as to open an ancillary fuel nozzle hole (204) and inject the ancillary fuel, and a main fuel nozzle hole (202) is opened after the injection of the ancillary fuel so as to inject the main fuel, thereby conducting two-stage fuel injection. In addition, main fuel paths (110, 210), ancillary fuel paths (120, 220, 230), and nozzle holes (202, 204) are arranged into a dual structure in one body (100a) so as to enable the injection of two types of fuels.

JP4364864	Variable nozzle injector
JPH04234561	FUEL INJECTION DEVICE
JP2010174781	FUEL INJECTION VALVE

JEON BYUNG HYUN (KR)
KIM JU TAE (KR)
AN KWANG HEAN (KR)
KIM SEUNG JIN (KR)

PCT/KR2011/005879

February 16, 2012

August 11, 2011

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HYUN DAI HEAVY IND CO LTD (KR)
JEON BYUNG HYUN (KR)
KIM JU TAE (KR)
AN KWANG HEAN (KR)
KIM SEUNG JIN (KR)

F02M45/10; F02M61/10; F02M61/16; F02M61/20

JP2006183468A	2006-07-13
US5429309A	1995-07-04
JP2009275646A	2009-11-26
KR100299288B1
JPH0610787A	1994-01-18

None
See also references of EP 2604847A4

KIM, SUN-YOUNG (KR)
김순영 (KR)

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