A multi-power source coupled transmission system and control method

Abstract

The invention discloses a coupling transmission system with multiple power sources, and a control method and belongs to the field of vehicles. The coupling transmission system with the multiple power sources is used for coupling and transmission of vehicle power and comprises at least two power sources, a clutch, a differential gear train and a speed adjustment power source, wherein the two adjacent power sources form a group, and output shafts of the power sources are arranged face to face; the clutch is located between the two adjacent power sources; the differential gear train is located at the front end of the clutch and arranged between the two adjacent power sources and is used to adjust a rotation speed of the power source remote from the clutch; the speed adjustment power source is used to output a controllable rotation speed to the differential gear train; and each group of power sources is correspondingly equipped with the clutch, the differential gear train and the speed adjustment power source. The invention also provides the corresponding control method. The coupling transmission system with the multiple power sources disclosed by the invention has the advantages that the output rotation speed of the power sources can be adjusted rapidly, so that impact to the clutch can be reduced, and the service life of the clutch can be prolonged.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a multi-power source coupling transmission system and a control method. Background technique [0002] When the hybrid vehicle is running, when the engine is switched from non-working to working with the electric motor or the engine is working alone, the phenomenon of the motor pulling the engine backwards often occurs, especially when the combined speed difference between the electric motor and the engine is large, the clutch slips and wears seriously and suffered a great impact. [0003] In the prior art, the method of starting the engine before the clutch is engaged is usually used to adjust the engine speed from idling to near the motor speed, and monitor the instantaneous speed of the engine and the instantaneous speed of the motor through closed-loop monitoring. [0004] However, because there are many factors affecting the timing of the best access period, and it is difficult for t...

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Problems solved by technology

[0004] However, because there are many factors affecting the timing of the optimal access period, and it is difficult for the engine itself to adjust the speed to the specified speed in a short time, the time of the optimal access period is not fixed, resulting in a long clutch time period and a long clutch period. Disadvantages such as uncertainty seriously affect driving experience

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