Title:
FUEL INJECTION VALVE
Document Type and Number:
Japanese Patent JP2016065539
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel injection valve capable of ensuring low power consumption and increasing an injection quantity of fuel.SOLUTION: In a fuel injection valve 1, a clearance 430 is formed between a flange end surface 431 of a flange section 43 and a movable-core first end surface 501 of a movable core 50 when a restriction part 45 provided in a needle 40 contacts the movable core 50. As a result, when a coil forms a magnetic field, the movable core 50 contacts the flange section 43 while accelerating in a valve opening direction, so that a relatively strong force in the valve opening direction acts on the needle 40. Furthermore, after the movable core 50 contacts a fixed core 30, the needle 40 moves further in the valve opening direction by an energization force of a second spring 32. As a result, a lift amount of the needle 40 becomes larger than a moving distance since the movable core 50 contacts the flange section 43 until the movable core 50 contacts a fixed-core contact section 302. It is, therefore, possible to increase the lift amount of the needle 40 without increasing electricity supplied to the coil.SELECTED DRAWING: Figure 2
More Like This:
| JPS61171876 | ELECTROMAGNETICALLY OPERATED TYPE FUEL INJECTION VALVE |
| WO/2012/034758 | FUEL INJECTION VALVE |
| WO/2003/089782 | INJECTOR FOR THE INJECTION OF FUEL |
Inventors:
YAMAMOTO TATSUSUKE
OIKAWA SHINOBU
OIKAWA SHINOBU
Application Number:
JP2015181499A
Publication Date:
April 28, 2016
Filing Date:
September 15, 2015
Export Citation:
Assignee:
DENSO CORP
International Classes:
F02M51/06
Domestic Patent References:
| JP2009191687A | 2009-08-27 | |||
| JP2012097728A | 2012-05-24 | |||
| JP2013100756A | 2013-05-23 | |||
| JP4637930B2 | 2011-02-23 |
Foreign References:
| US20130221138A1 | 2013-08-29 |
Attorney, Agent or Firm:
Masaki Hattori