Automatic gearbox oil cooling heat dissipation electromagnetic valve and heat dissipation method

A technology of automatic transmission oil and solenoid valve, applied in valve details, valve device, valve housing structure, etc., can solve problems such as short service life, poor heat dissipation efficiency, coil damage, etc., to avoid jamming, improve working life, The effect of avoiding overheating phenomenon
CN109386641AActive Publication Date: 2019-02-26BEIJING INSTITUTE OF TECHNOLOGYGY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2019-02-26

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Abstract

The invention relates to an automatic gearbox oil cooling heat dissipation electromagnetic valve and a heat dissipation method, and belongs to the field of automatic gearbox electromagnetic valves. The problems are solved that in the prior art, an ordinary electromagnet dissipates heat mainly in dependence on air, the heat dissipation efficiency is low, a coil is easily damaged, a valve element iseasily clamped tightly, and the service life is shortened. According to the automatic gearbox oil cooling heat dissipation electromagnetic valve, two connection holes are formed in the portion between an electromagnet internal space of the electromagnetic valve and an oil discharging port of a valve body so that the electromagnet internal space of the electromagnetic valve can be communicated with the oil discharging port of the valve body. By the adoption of the automatic gearbox oil cooling heat dissipation electromagnetic valve and the heat dissipation method, little working oil fluid flows in the electromagnet, heat in the electromagnet is taken away, and meanwhile the cooling and lubricating functions are achieved. The overheat phenomenon of the electromagnet valve coil and the clamping phenomenon of armature iron are avoided, and the service life of the electromagnetic valve is prolonged.
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Description

technical field

[0001] The invention relates to the field of automatic transmission solenoid valves, in particular to an automatic transmission oil cooling and heat dissipation solenoid valve and a heat dissipation method. Background technique

[0002] The solenoid valve is a key component of the shifting system of the vehicle's automatic transmission. By receiving the signal from the shift control unit, it directly controls the clutch, brake, etc. inside the gearbox to perform shifting operations. The performance and life of the solenoid valve directly affect the shifting quality of the automatic transmission. The principle is to generate electromagnetic force through the solenoid coil, thereby acting on the spool to control the on-off of the hydraulic valve.

[0003] During the working process of the solenoid valve, there will be energy losses such as copper loss and iron loss. The copper loss is mainly the energy loss of the coil resistance, and the iron loss is mainly th...

Claims

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