The invention discloses an engine overspeed protection control method. The method comprises the following steps that S1, a control unit obtains the current engine rotating speed and the current exhaust temperature; s2, the control unit judges whether the current engine rotating speed is larger than a calibrated first speed threshold value or not, if yes, S3 is executed, and if not, S1 is executed; s3, closing the electromagnetic valve of the oil sprayer, and sending out an alarm signal by an alarm; s4, braking; s5, the control unit judges whether the current engine rotating speed is larger than a calibrated first speed threshold value or not, if yes, the step S6 is executed, and if not, the step S1 is executed; s6, the control unit judges whether the exhaust temperature of the engine is larger than the calibrated temperature threshold value or not, if yes, S7 is executed, and if not, S7 is executed; s7, the air inlet throttling valve is closed; s8, the control unit judges whether the current rotating speed of the engine exceeds a calibrated second speed threshold value or not, if yes, the step S9 is executed, and if not, the step S3 is executed; and S9, starting a speed reduction device. The overspeed protection device can provide protection for overspeed caused by misoperation or mechanical faults, and the service life of the engine is long.

    本发明公开了一种发动机超速保护控制方法,包括如下步骤:S1、控制单元获取当前发动机转速和排气温度;S2、控制单元判定当前发动机转速是否大于标定的第一速度阈值,若是,执行S3,否则,执行S1;S3、喷油器电磁阀关闭,报警器发出报警信号;S4、踩刹车;S5、控制单元判定当前发动机转速是否大于标定的第一速度阈值,若是,执行S6,否则,执行S1;S6、控制单元判断发动机排气温度是否大于标定的温度阈值,若是,执行S7,否则,执行S7;S7、关闭进气节流阀;S8、控制单元判定当前发动机转速是否超过标定的第二速度阈值,若是,执行S9,否则,执行S3;S9、开启降速装置。本发明能够对因误操作或机械故障导致的超速提供保护,发动机使用寿命长。


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    Titel :

    Engine overspeed protection control method


    Weitere Titelangaben:

    发动机超速保护控制方法


    Beteiligte:
    TANG XINGZHI (Autor:in) / LUO CHUNSHENG (Autor:in) / LIU MING (Autor:in)

    Erscheinungsdatum :

    2022-07-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung



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