Design method for inhibiting oil stirring power loss of transmission system

Abstract

The invention discloses a design method for inhibiting the oil stirring power loss of a transmission system. The design method comprises the following steps that the step 1, the oil stirring power loss of each component in the comprehensive transmission system at different rotating speeds is obtained through an oil stirring power loss test, two or more components with the proportions ranking fromlarge to small in the oil stirring power loss of the comprehensive transmission system are selected to be subjected to power inhibition, wherein the selected components are a planetary speed change mechanism and a hydraulic component, and the hydraulic component comprises a steering hydraulic coupler and a hydraulic speed reducer; and the step 2, oil stirring power loss inhibition is conducted onthe components selected in the step 1, and an inhibiting method comprises the steps that the minimum distance between parts with the maximum speed difference in the planetary speed change mechanism isincreased, the leakage loss of a liquid filling control valve of a hydraulic component is reduced, and a sealing ring material with the small friction coefficient is adopted. According to the method,the inhibition of the oil stirring power loss of the comprehensive transmission system which is converted from one dimension to multiple dimensions and expands from the point to the domain can be achieved, and the design level of the vehicle driving performance and the fuel economy can be improved advantageously.

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 ...

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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.

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