ELECTRONICALLY CONTROLLED FUEL INJECTION VALVE

Title:

ELECTRONICALLY CONTROLLED FUEL INJECTION VALVE

Document Type and Number:

WIPO Patent Application WO/2012/091393

Kind Code:

A3

Abstract:

The present invention relates to an electronically controlled fuel injection valve, and unlike a conventional mechanical fuel injection valve, the electronically controlled fuel injection valve provided by the present invention controls the injection time and the injection amount according to a control signal, independent of driving conditions of an engine, enables swift control of the fuel injection by using as a method for controlling the fuel injection a method that increases the strength of lifting up a cut-off needle of an injection control unit by delivering through a control needle high pressure fuel to a lower pressure chamber, and when the fuel injection is not carried out, fuel is not supplied to a nozzle unit, thereby preventing the high pressure from being applied to the nozzle unit at normal times, and prevents a large amount of fuel from being leaked into a combustion chamber when a component such as the needle is damaged, and processing thereof is easy due to the simple structure of a second fluid channel.

Inventors:

KIM DONG-HUN (KR)
RYU SEUNG-HYUP (KR)
PARK TAE-HYUNG (KR)

Application Number:

PCT/KR2011/010120

Publication Date:

August 23, 2012

Filing Date:

December 26, 2011

Export Citation:

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Assignee:

HYUN DAI HEAVY IND CO LTD (KR)
KIM DONG-HUN (KR)
RYU SEUNG-HYUP (KR)
PARK TAE-HYUNG (KR)

International Classes:

F02M61/10; F02M51/06; F02M61/16; F02M61/18

Foreign References:

JP2000087821A	2000-03-28
US5988533A	1999-11-23
JP2010249103A	2010-11-04
JPH10131828A	1998-05-19
JPH07324665A	1995-12-12

Other References: