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Flow control valve

A technology of flow control valves and valve components, applied in the direction of engine control, valve details, valve devices, etc., can solve problems such as leakage

Inactive Publication Date: 2009-11-04
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, as described in JP11-201004A, when the valve body opens / closes the flow passage by the poppet valve method, inclination relative to the seating position is generated according to the degree of axial misalignment, and valve leakage tends to caused by this inclination

Method used

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Examples

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Embodiment Construction

[0013] A flow control valve according to one embodiment of the present invention has an axial element and a valve element, wherein the axial element converts torque applied by a stepping motor into an axial force and is displaced in the axial direction according to the axial force, The valve element is urged by predetermined urging means to contact the axial member, and is axially displaced according to an urging force applied by the urging means and an axial force transmitted from the axial member. The flow control valve operates the opening of the flow passage by moving the axial member in the axial direction to move the valve member.

[0014] The valve element completely closes the opening of the flow passage by seating on the opening edge defining the predetermined opening, and the seating surface of the valve element seated on the opening edge is formed to be inclined with respect to a plane parallel to the opening edge.

[0015] Also, the inclination angle of the seating...

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PUM

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Abstract

A flow control valve (1), comprising a stepping motor (2), an axial element (5), a pushing device (6) and a valve element (7). The axial element (5) converts the torque applied by the stepping motor (2) into an axial force, and moves in the axial direction of the stepping motor (2) according to the axial force. The pushing device (6) applies pushing force. The valve element (7) is pushed by the pushing device (6) to contact the axial element (5), and moves on the shaft according to the pushing force applied by the pushing device (6) and the axial force transmitted from the axial element (5). Move up. A valve element (7) is arranged in the flow passage (3), and the opening degree of the flow passage (3) is adjusted by moving the axial member (5) in the axial direction to move the valve element (7).

Description

technical field [0001] The present invention relates to a flow control valve that converts torque applied by a stepping motor into an axial force and uses the axial force to manipulate the opening of a flow channel. Background technique [0002] Generally, for example, in order to control the intake air amount of an engine during idling operation, a flow control valve as described above using a stepping motor for an actuator is used. [0003] Such a conventional flow control valve converts torque applied by a stepping motor into an axial force, and has a valve body axially displaced according to the axial force. Then, the conventional flow control valve operates the opening degree of the flow passage by displacing the valve body (for example, JP2006-37916A, JP11-201004A). [0004] Here, the torque applied by the stepper motor is converted into an axial force as follows. That is, screws are provided on a rotor that is rotated by energization of the stepping motor, and screw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K13/00F16K31/04F02D33/00
Inventor 古川晃石田伸二中野勇次樱井公二
Owner DENSO CORP
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