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Electromagnetically driven valve

A technology of electromagnetic drive and electromagnetic force, which is applied in the direction of non-mechanical actuated valves, valve devices, valve details, etc., can solve the problems of large size, unsuccessful initial drive of electromagnetic drive valves, complex structure, etc., and achieve the goal of simplifying the structure Effect

Inactive Publication Date: 2008-01-09
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the first and second moving elements stop in the middle position, the initial actuation of the electromagnetically actuated valve is not successfully performed
Meanwhile, although according to the above-mentioned Patent Document 1, an electromagnetic induction coil is provided in the electromagnetically driven valve in order to increase the initial driving force, the structure may become complicated or the size may be large

Method used

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  • Electromagnetically driven valve
  • Electromagnetically driven valve
  • Electromagnetically driven valve

Examples

Experimental program
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Effect test

no. 1 example

[0036] Fig. 1 shows an electromagnetically driven valve according to a first embodiment of the present invention. The electromagnetically driven valve of this embodiment is used to realize an exhaust valve in an internal combustion engine such as a gasoline engine or a diesel engine. Note that an electromagnetically driven valve may be used to realize an intake valve of an internal combustion engine, in which case the electromagnetically driven valve is also constructed as described below.

[0037] Referring to FIG. 1 , an electromagnetically driven valve 10 is an electromagnetically driven valve of a rotary driving type, which is driven due to a combined action of electromagnetic force and elastic force. A parallel linkage mechanism is used as the operating mechanism of the electromagnetically driven valve.

[0038] Electromagnetically driven valve 10 includes driven valve 14, valve opening side moving element 21 and valve closing side moving element 31, electromagnet 40 and...

no. 2 example

[0060] Fig. 4 shows an electromagnetically driven valve according to a second embodiment of the present invention. The electromagnetically driven valve according to the present embodiment is basically configured in a similar manner to the electromagnetically driven valve 10 in the first embodiment, and thus, repeated descriptions of redundant structures will not be made.

[0061] Referring to Fig. 4, in this embodiment, a valve closing side moving element 51 is provided to replace the valve closing side moving element 31 in Fig. 1, and the magnetic permeability of the valve closing side moving element 51 is equal to that of the valve opening side moving element 21. Rate. The valve closing side moving member 51 is formed such that the length of the valve closing side moving member 51 in the direction perpendicular to the surface 31a, that is, the thickness B2 of the valve closing side moving member 51, is smaller than that of the valve opening side moving member 21 in the direc...

no. 3 example

[0067] Fig. 6 shows a valve-closing-side moving element of an electromagnetically driven valve according to a third embodiment of the present invention. The electromagnetically driven valve according to the present embodiment is basically configured in a similar manner to the electromagnetically driven valve 10 in the first embodiment, and thus, repeated descriptions of redundant structures will not be made.

[0068] Referring to Fig. 6, in the present embodiment, a valve closing side moving element 61 is provided to replace the valve closing side moving element 31 in Fig. 1, and the magnetic permeability of the valve closing side moving element 61 is equal to that of the valve opening side moving element 21. Rate. A plurality of grooves 62 extending in the direction in which the central axis 35 extends are formed in the surface 31 a of the valve closing side moving member 61 at regular intervals from the support portion 33 toward the coupling portion 32 .

[0069] According ...

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PUM

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Abstract

An electromagnetically driven valve (10) includes a valve-opening side moving element (21) and a valve-closing side moving element (31) having rotatably supported support portions (23, 33) and carrying out oscillating movement between a valve-opening position and a valve-closing position around the support portions (23, 33) respectively, and an electromagnet (40) having a coil (42) implemented by a monocoil and arranged between the valve-opening side moving element (21) and the valve-closing side moving element (31). The valve-opening side moving element (21) and the valve-closing side moving element (31) are held at a position intermediate between the valve-opening position and the valve-closing position while electromagnetic force is not applied. Magnetic permeability of a material forming the valve-opening side moving element (21) is different from that of a material forming the valve-closing side moving element (31). According to such a structure, an electromagnetically driven valve with a simplified structure, of which initial drive is facilitated, is provided.

Description

technical field [0001] The present invention relates generally to a solenoid-actuated valve, and more particularly to a solenoid-actuated valve including an electromagnet realized by a single coil. Background technique [0002] Regarding conventional electromagnetically driven valves, for example, Japanese Patent Laid-Open No. 5-106414 discloses an electromagnetically driven valve aimed at increasing the initial driving force of the valve (Patent Document 1). The electromagnetically driven valve disclosed in Patent Document 1 includes a moving coil provided in a moving portion and an electromagnetic induction coil wound around an electromagnetic core. At the time of initial actuation, the thrust force of the valve is generated by supplying power to the moving coil, and the magnetic force lines that enhance the thrust are applied to the solenoid coil by supplying power to the electromagnetic induction coil. [0003] An electromagnetically driven valve called a rotary drive t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L9/04F16K31/06F01L9/20
CPCF16K31/0682F01L2009/0436F01L2009/0409F01L9/04F16K31/0679F01L2009/2109F01L2009/2136F01L9/20
Inventor 中村喜代治
Owner TOYOTA JIDOSHA KK