Hybrid transmission lubrication control method, system and electronic device

By combining electric and mechanical pumps, the problems of low efficiency and high noise in the lubrication system of the hybrid transmission under idling conditions were solved, achieving high efficiency, reliability and smooth transition of the lubrication system, and improving the NVH performance of the whole vehicle.

CN122407769APending Publication Date: 2026-07-17FAW QI NEW POWER (CHANGCHUN) TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FAW QI NEW POWER (CHANGCHUN) TECHNOLOGY CO LTD
Filing Date
2026-04-28
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Under idling conditions, the lubrication system of existing hybrid transmissions suffers from low efficiency and high noise, failing to achieve a balance between system flow requirements, efficiency, and NVH (noise, vibration, and harshness).

Method used

A combined control strategy of electric pump and mechanical pump is adopted. By detecting the idling stop state, a graded lubrication strategy is dynamically executed, including short-term operation of electric pump, flow compensation of mechanical pump, and redundant oil supply provided by engine-driven mechanical pump, so as to realize the coordinated work of lubrication system and fault response.

Benefits of technology

While ensuring the cooling and lubrication of transmission components, the system reduces energy consumption and noise, improves the reliability of the lubrication system and the NVH performance of the whole vehicle, achieves a smooth transition of lubrication between parking and driving, and enhances the ability to handle faults.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of vehicles and provides a hybrid transmission lubrication control method, a system and electronic equipment; the hybrid transmission lubrication control method comprises the following steps: S1, detecting whether a vehicle is in an idling parking state; S2, if yes, controlling an electric pump to continuously operate for a preset time based on a first preset rotating speed in response to the idling parking state; S3, acquiring first data of the vehicle within the preset time; the first data at least comprises electric pump fault information, mechanical pump fault information and gear information; and S4, based on the first data, adopting a preset control strategy to lubricate the hybrid transmission. The application solves the technical problems of low system efficiency and large noise caused by continuous operation of the electric pump in the idling parking state while ensuring sufficient lubrication and cooling of the hybrid transmission.
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