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Hybrid transmission box body oil return path structure

An oil return oil circuit and transmission technology, applied in the field of auto parts, can solve problems such as increased leakage risk, small throttling area, and oil accumulation.

Active Publication Date: 2021-05-18
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At least the following technical problems exist in the existing oil return passage structure of the hybrid transmission case: the oil return hole 103 and the oil return passage 104 are cylindrical oil passages formed by machining, which destroys the dense layer on the surface of the parts and increases the leakage. Leakage risk, the cylindrical oil channel formed by machining has a small throttling area, resulting in the inability to return oil quickly and causing oil accumulation in the motor cavity, resulting in low transmission efficiency of the transmission

Method used

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  • Hybrid transmission box body oil return path structure
  • Hybrid transmission box body oil return path structure
  • Hybrid transmission box body oil return path structure

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] Such as Figure 1 to Figure 6 The shown oil return circuit structure of a hybrid transmission case includes a transmission case 1 and a motor case 2 that are fixedly connected together. The transmission case 1 is provided with a transmission cavity, and the motor case 2 is A motor cavity 3 is provided, and the motor cavity 3 is located on the left side of the transmission cavity; at least one oil return oil passage is provided between the motor cavity 3 and the transmission cavity, and the oil return oil passage includes casting and machining The motor case oil passage formed in the motor case 2 and the transmission case body oil passage formed in the transmission case 1 by casting, the oil inlet of the motor case oil passage is set in the motor cavity 3 On the cavity wall of the lower part, the oil outlet of the motor housing oil passage is connected with the oil i...

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Abstract

The invention relates to a hybrid transmission box body oil return path structure. The structure comprises a transmission box body and a motor shell which are fixedly connected together, wherein a transmission cavity is formed in the transmission box body, and a motor cavity is formed in the motor shell. An oil return channel is arranged between the motor cavity and the transmission cavity and comprises a motor shell oil channel formed in the motor shell in a casting and machining mode and a transmission box body oil channel formed in the transmission box body in a casting mode. An oil inlet of the motor shell oil channel is formed in the cavity wall of the lower portion of the motor cavity, an oil outlet of the motor shell oil channel is communicated with an oil inlet of the transmission box body oil channel, and an oil outlet of the transmission box body oil channel is communicated with the transmission cavity. Lubricating oil at the bottom of the motor cavity is discharged through the oil return channel, the oil stirring loss of a clutch and a motor rotor can be reduced, and the efficiency of a transmission is improved by 2%-3%.

Description

technical field [0001] The invention relates to auto parts, in particular to an oil return circuit structure of a case body of a hybrid transmission. Background technique [0002] The hybrid transmission controls the combination and separation of the motor and the input shaft through the clutch to realize the transmission and interruption of the engine power, and realizes the gear change of the transmission through the combination and separation of the other clutch. In order to ensure the normal working temperature of the clutch, lubricating oil is thrown from the support shaft by centrifugal force to oil-cool the clutch plate. In order to shorten the length of the hybrid transmission, the clutch is placed inside the motor, and the lubricating oil will eventually accumulate at the bottom of the motor cavity. If the accumulation of lubricating oil in the motor cavity is too high, the churning loss of the clutch and the motor rotor will be increased, reducing the Transmission...

Claims

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Application Information

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IPC IPC(8): F16H57/04
CPCF16H57/0424
Inventor 张晓蛟周义付亮周元聪余洪
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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