chapter 10 braking system制动系统

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1、BrakingSystem１.Overviewofbrakingsystem２.Brakes３.Non-powerbrakes４.Power-assistedbrakes５.Powerbrakes６.Additionalretarderbrakesystem７.ABS(AntilockBrakingsystem)Energyisrequiredwhenavehicleisacceleratedfromresttoacertainspeed.Aproportionofthatenergyisnowstoredin

2、thevehicleandiscalledkineticenergy.Inordertoreducethespeedofthevehicle,thebrakeshavetoconvertthekineticenergytoheatenergy;thespeedofconversiongovernstherateatwhichthevehicleslowsdown.汽车从原地起步加速到某一速度需要能量。储存在汽车中的那部分能量称为动能。要降低车速,制动器必须把汽车的动能转换为热能；转换的速度决定了汽车减速的快慢。

3、Qu.1:What’sthemainfunctionofbrakingsystem?Mainpartsofbrakingsystem1.Theenergy-supplyingdevice供能装置2.Thecontroldevice控制装置3.Thetransmissiondevice传动装置4.Thebrake制动器MainpartsofbrakingsystemDiscBrakeBrakecaliperBrakehose/lineBrakepedalMastercylinderWheelcylinderDru

4、mBrakeMeteringValve节压阀ProportioningValve比例阀CheckValve单向阀SolenoidValve电磁阀CombinationValve组合阀DelayValve延迟阀ModulatorValve调节阀Qu.2:Howtodifferentiatethetypesofbrakingsystem?Servicebrakingsystem行车制动系Parkingbrakingsystem驻车制动系Additionalretardingbrakingsystem缓速制动系mus

5、cularenergybrakingsystem(non-powerbrakingsystem)energyassistedbrakingsystem(powerassistedbrakingsystem)non-muscularenergybrakingsystem(powerbrakingsystem)inertialbrakingsystemgravitybrakingsystemAccordingtothetypesofenergyused:目前使用的制动系统有三种类型：行车制动系，住车制动系和辅助制动

6、系．行车制动系和住车制动系有独立的控制和传动装置．行车制动系通常使用脚刹，而驻车制动系通常使用手刹．Thethreetypesofbrakingsystemsareinusetoday:servicebrakingsystem,parkingbrakingsystemandadditionalretarding-brakingsystem.Theservicebrakingsystemandtheparkingbrakingsystemhaveseparatecontrolandtransmissiondevi

7、ces.Theservicebrakingsystemisnormallyfoot-operated,whiletheparkingbrakingsystemishand-operated.AccordingtotransmissiondeviceSingle-circuitbrakingsystemMulti-circuitbrakingsystemMechanicalbrakingsystem机械制动Hydraulicbrakingsystem液压制动Pneumaticbrakingsystem气压制动El

8、ectromagneticbrakingsystem电磁制动Combinationbrakingsystem目前使用的制动器有两种类型：鼓式制动器和盘式制动器．从1976年开始，所有的汽车前轮都使用盘式制动器,大部分汽车后轮使用的是鼓式制动器.在盘式制动器和鼓式制动器中都使用液压系统.液压系统把制动踏板与每个车轮的制动部件相连接.TypesofthebrakeTwotypesofbra