Control system and method for preventing input shaft of hybrid gearbox from being broken

By monitoring the number of engine start failures in the electronic control unit (ECU) and controlling the startup behavior, the problem of the hybrid transmission input shaft breaking when the engine is abnormally unable to start is solved, and the normal start of the engine and the safe driving of the vehicle are achieved.

CN119459316APending Publication Date: 2025-02-18YIBIN COWIN AUTO CO LTD
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Patent Information

Application Number
CN202411810113.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-02-18

AI Technical Summary

Technical Problem

The prior art cannot prevent the input shaft of the hybrid transmission from breaking when the engine is abnormally unable to start, resulting in the engine being unable to start. The vehicle can only drive in pure electric mode, and the vehicle breaks down after the battery power is exhausted.

Method used

The number of engine start failures is monitored through the electronic control unit (ECU), and determine whether the engine is prohibited or allowed to start according to the preset number of times, so as to prevent the input shaft of the hybrid transmission from breaking due to repeated start of the engine.

Benefits of technology

When the engine is abnormally unable to start, by monitoring and controlling the number of engine starts, the input shaft of the hybrid transmission can be effectively prevented from breaking, ensuring that the engine can start normally, and avoiding the vehicle breaking down due to exhaustion of battery power.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a control system and method for preventing an input shaft of a hybrid gearbox from being broken, and belongs to the technical field of hybrid electric vehicles. S2, an electronic control unit (ECU) monitors the starting failure times of the engine; s3, an electronic control unit (ECU) judges whether the starting failure frequency of the engine is larger than a preset frequency or not, if yes, the step S4 is executed, and if not, the step S6 is executed; s4, an electronic control unit (ECU) inputs a first instruction to a vehicle control unit (VCU); s5, the vehicle control unit (VCU) forbids to start the engine, and the step S8 is executed; s6, the electronic control unit (ECU) inputs a second instruction to a vehicle control unit (VCU); s7, the vehicle control unit (VCU) controls a power generation motor controller (GCU) to start an engine, and the step S8 is executed; and S8, ending. When the engine is abnormal and cannot be started, the input shaft of the hybrid transmission can be prevented from being broken under the condition that the engine is repeatedly started.
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Citation Information

Patent Citations

  • Hybrid clutch assembly, hybrid gearbox assembly and hybrid automobile

    CN213228297U

  • Whole vehicle starting method equipped with belt-driven starter generator system (BSG) system, device and controller

    CN109026488A

  • Control method for preventing engine from flooding in starting stage of hybrid electric vehicle

    CN115013212A

  • Vehicle engine control method and device, electronic equipment, storage medium and program product

    CN118008652A