Harvester main clutch duty ratio flexible combination control method and related equipment

CN122040771APending Publication Date: 2026-05-15LOVOL HEAVY IND CO LTD
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Patent Information

Application Number
CN202610391681.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-27
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Traditional main clutch engagement control methods cause severe vibration of the pushrod and belt slippage and wear, affecting the service life of the vehicle's transmission system and driving quality. Existing improvement methods have failed to fundamentally solve the problem of smooth engagement.

Method used

A duty cycle flexible engagement control method is adopted. The energizing time of the main clutch engagement solenoid valve is adjusted through a self-learning strategy. The energizing and de-energizing of the solenoid valve are controlled in stages, including continuous energizing, alternating energizing and de-energizing, and finally maintaining a continuous energizing state, thereby optimizing the timing control accuracy of the engagement process.

Benefits of technology

This improved the smoothness of the main clutch engagement process, reduced push rod vibration and belt wear, extended the service life of the transmission system, and enhanced operational safety and reliability.

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Abstract

The invention relates to the technical field of harvester transmission control, and discloses a harvester main clutch duty ratio flexible combination control method and related equipment.The method comprises the steps that in response to a main clutch combination instruction, a main clutch combination electromagnetic valve of a harvester is controlled to be powered on; within a first preset time period after the main clutch combination electromagnetic valve is electrified, the main clutch combination electromagnetic valve is automatically adjusted to keep a continuous electrified state through a self-learning strategy; within a second preset time period after the first preset time period is finished, the main clutch is controlled to be combined with the electromagnetic valve to be powered on and powered off alternately according to at least one control cycle; wherein the power-on duration of the main clutch combined with the electromagnetic valve in each control period is smaller than the power-off duration; and after the second preset time period is finished, the main clutch is controlled to be combined with the electromagnetic valve to keep a continuous power-on state. The problems of violent shaking of the push rod and slipping abrasion of the belt caused by a traditional fixed pressure combination mode are solved, the stability of the main clutch combination process is achieved, and the service life of a transmission system is prolonged.
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