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A design method for suppressing oil churning power loss in transmission system

A technology of power loss and transmission system, applied in transmission, fluid transmission, transmission parts, etc., can solve problems such as complex structure and composition, and achieve the effect of reducing leakage, improving fuel economy performance, and improving system efficiency

Active Publication Date: 2021-12-31
CHINA NORTH VEHICLE RES INST
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Problems solved by technology

[0003] The integrated transmission system integrates mechanical, electronic, hydraulic and other components. Its structure is complex, and the working boundary conditions for building churning power loss are coupled with each other. At present, there is still a lack of scientific system-level design methods for calculating churning power loss in the industry.

Method used

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  • A design method for suppressing oil churning power loss in transmission system
  • A design method for suppressing oil churning power loss in transmission system
  • A design method for suppressing oil churning power loss in transmission system

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Embodiment Construction

[0074] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0075] This embodiment provides a design method for suppressing the oil churning power loss of the transmission system, and the specific steps are as follows:

[0076] Step 1. Select components according to the ratio of oil churning power loss, that is, through the oil churning power loss test, obtain the churning power loss of each component in the integrated transmission system at different speeds, and select the churning power loss in the integrated transmission system Power suppression is performed on the two or more top-ranked components in descending order of proportion;

[0077] Among them, the churning power loss of the integrated transmission system includes: the power required for the hydraulic system to provide lubricating oil, operating oil and compensation oil for the system, the gear shaft meshing and churning loss power, the friction element...

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Abstract

The invention discloses a design method for suppressing oil churning power loss of a transmission system, the method is as follows: Step 1, through the oil churning power loss test, obtain the churning power loss of each component in the integrated transmission system at different speeds, select the The proportion of churning power loss in the comprehensive transmission system is suppressed by the two or more top components in descending order; the selected components are the planetary transmission mechanism and hydraulic components, and the hydraulic components include steering hydraulic components. Coupler and hydraulic reducer; step 2, suppress the oil churning power loss of the components selected in step 1, and the suppression methods include: increasing the minimum distance between parts with the largest speed difference in the planetary transmission mechanism, reducing the liquid filling of hydraulic components Control valve leakage and adopt sealing ring material with small friction coefficient. The invention can realize the transformation from one-dimensional to multi-dimensional, and the suppression of churning power loss of the comprehensive transmission system, which is expanded from point to domain, and is beneficial to improve the design level of vehicle driving performance and fuel economy.

Description

technical field [0001] The invention belongs to the technical field of crawler vehicles, and in particular relates to a design method for suppressing oil churning power loss of a transmission system. Background technique [0002] The oil churning power loss of the integrated transmission system is an important factor that restricts the improvement of transmission efficiency. If the no-load churning power loss is large, the system will inevitably generate a large amount of heat, and the supporting cooling auxiliary system will be burdened. The overall efficiency and performance indicators of the transmission system will be It is difficult to improve, which directly affects the efficiency, economy and reliability of the whole vehicle. Therefore, the oil churning power loss value of the integrated transmission system has an important impact on the fuel economy of the vehicle, and is an important content of the integrated transmission system design and assessment. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/04F16H57/08F16H41/04F16H41/30
CPCF16H57/0409F16H57/08F16H41/04F16H41/30F16H2057/087
Inventor 李春明徐宜张金乐卜树峰张喜明乔丽李明勇陈嘉杨宋美球魏然柳泓蛰
Owner CHINA NORTH VEHICLE RES INST
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