Title:
FLUID INJECTION VALVE
Document Type and Number:
Japanese Patent JP3719351
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the responsiveness of a fluid injection valve without enlarging it.
SOLUTION: A fluid injection valve is provided with a valve element 3 and an actuator 4, and when the actuator 4 drives the valve element 3 to open an injection port 2, supplied fluids are injected. The actuator 4 is made of a shape memory alloy 4s, and elongated when cooled to a deformation temperature or lower to hold the valve element 3 in the position of closing the injection port 2. It is contracted when heated to the transformation temperature or higher, and the valve element 3 is displaced to the position of opening the injection port 2. Since the contraction rate of the shape memory alloy 4s is large, a sufficient amount of stroke is secured even without setting its axial length so large, and the responsiveness of the fluid injection valve is improved without enlarging it.
Inventors:
Yorito Nakao
Akihiro Sakakida
Takefusa Kubo
Shigeru Kamegaya
Akihiro Sakakida
Takefusa Kubo
Shigeru Kamegaya
Application Number:
JP19455299A
Publication Date:
November 24, 2005
Filing Date:
July 08, 1999
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02M51/06; F02M53/04; F16K31/70; G05D3/00; (IPC1-7): F16K31/70; F02M51/06; F02M53/04
Domestic Patent References:
| JP7077288A | ||||
| JP6264842A | ||||
| JP63246580A | ||||
| JP59006480A |
Attorney, Agent or Firm:
Masaki Goto
Yoshio Matsuda
Yoshio Matsuda
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