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Electromagnetically driven valve

A technology of electromagnetic drive and drive valve, which is applied in the direction of electromagnet, non-mechanical actuated valve, electromagnet with armature, etc. It can solve the problem of increasing the sliding resistance of the valve stem, the inability of the driven valve to reciprocate smoothly, and displacement, etc. problem, to achieve the effect of smooth reciprocating motion

Inactive Publication Date: 2007-08-01
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the valve plate swings around the other end, one end of the valve plate will also be displaced in a direction orthogonal to the direction of reciprocation of the driven valve.
Such displacement prevents the driven valve from reciprocating smoothly, or increases the sliding resistance between the valve stem and the guide used to guide the valve stem

Method used

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  • Electromagnetically driven valve
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Examples

Experimental program
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Effect test

no. 1 example

[0025] The electromagnetically driven valve according to the present embodiment constitutes an engine valve (intake valve or exhaust valve) in an internal combustion engine such as a gasoline engine or a diesel engine. In the present embodiment, description is made on the assumption that the electromagnetically driven valve is configured as an intake valve, however, note that when the electromagnetically driven valve is configured as an exhaust valve, the structure is similar.

[0026] Referring to FIG. 1 , the electromagnetically driven valve 10 is a rotationally driven electromagnetically driven valve. The parallel linkage mechanism is used as the operating mechanism of the electromagnetically driven valve.

[0027] The electromagnetically driven valve 10 includes a driven valve 14 and a lower valve plate 20 and an upper valve plate 30, the driven valve 14 has a valve stem 12 extending in one direction and an umbrella portion 13 formed at the end of the valve stem 12, the lo...

no. 2 example

[0062] The electromagnetically driven valve according to the present embodiment is constituted substantially similarly to the electromagnetically driven valve in the first embodiment. Therefore, descriptions of redundant structures will not be repeated.

[0063] Fig. 9 is an enlarged view of a region where a lash adjuster is provided in the electromagnetically driven valve. Referring to FIG. 9 , an end surface 19 a is defined at a position where the lower stem 19 is connected to the bottom surface of the lash adjuster 16 . In this embodiment, the end of the upper stem 18 is shaped like a flange so that the area of ​​the end face 18a is larger than the area of ​​the end face 19a.

[0064] According to the electromagnetically driven valve in the second embodiment of the present invention constructed as above, effects similar to those of the first embodiment can be obtained. In addition, the contact area between the end surface 18a and the top surface 16a is reduced, enabling s...

no. 3 example

[0066] The electromagnetically driven valve according to the present embodiment is constructed substantially similarly to the electromagnetically driven valve in the first embodiment. Therefore, redundant description will not be repeated.

[0067] Fig. 10 is an enlarged view of a region where a lash adjuster is provided in an electromagnetically driven valve. Referring to FIG. 10 , the gap adjuster 16 is composed of an upper cover 81 having a top surface 16a, a lower cover 83 arranged at a predetermined distance from the upper cover 81 and having a bottom surface 16b, and a viscous material that fills the gap between the upper cover 81 and the lower cover 83. components 82 such as grease and oil. In this embodiment, the lower retaining ring 8 in FIG. 1 is not arranged in the lower valve stem 19 . The lower spring 11 is accommodated in the hollow portion 9 between the bottom surface of the hollow portion 9 and the lower cover 83 .

[0068] In the electromagnetically driven v...

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Abstract

An electromagnetically driven valve (10) includes a driven valve (14) having a stem (12) extending in a prescribed direction and an umbrella-shaped portion (13) provided at a tip end of the stem (12) and opening / closing an intake / exhaust port, a lower disc (20) and an upper disc (30) having one ends (22, 32) coupled to the stem (12) and the other ends (23, 33) supported by a disc support base (51) so as to allow free oscillation of the disc respectively and oscillating around the other ends (23, 33) so as to cause the driven valve (14) to carry out reciprocating motion in the prescribed direction, a lash adjuster (16) provided in the stem (12), and a guide ring (45) guiding the lash adjuster (16) along the prescribed direction. The lash adjuster (16) contracts and expands in the prescribed direction and accommodates displacement of the stem (12) produced in a direction orthogonal to the prescribed direction as a result of reciprocating motion of the driven valve (14). With such a structure, the driven valve carries out smooth reciprocating motion.

Description

technical field [0001] The present invention relates generally to solenoid-actuated valves, and more particularly to rotary-actuated solenoid-actuated valves for internal combustion engines and driven by electromagnetic and elastic forces. Background technique [0002] As for the conventional solenoid-driven valve, for example, Japanese Patent Laid-Open No. 11-30113 discloses that it is intended to prevent noise due to friction or shock when the intake / exhaust valve is opened / closed and to improve its mounting characteristics on the engine. electromagnetic drive unit. The electromagnetic drive device disclosed in this publication includes: an armature accommodated in the housing in a movable manner up and down, valve closing electromagnets and valve opening electromagnets respectively fixed to the upper and lower positions of the armature, and the intake valve driven by the armature. Valve opening side spring that moves in the valve opening direction. [0003] The electrom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L9/04F16K31/06H01F7/121H01F7/14F01L1/24F01L9/20F01L9/21
CPCF01L2009/0425F01L2109/00F01L9/04F01L1/24F01L2309/00F01L2009/2125F01L9/20
Inventor 杉江丰浅野昌彦
Owner TOYOTA JIDOSHA KK
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