汽車工作原理英文

1、How Does A Car Work?Car Sub-Systems of InterestTorque ConverterEngineTransmissionDifferentialTiresCarBodyEngineFour CyclesIntakeCompressionCombustionExhaustSimplified Engine ModelUse SI units! Torque in Nm, velocity in rad/s and Power in WCar Sub-Systems of InterestTorque ConverterEngineTransmission

2、DifferentialTiresCarBodyTorque ConverterTorque ConverterThe model of a torque converter is fairly complex and highly nonlinearWe will not consider it in this class.If you need it, it will be provided to you as a Matlab function.Car Sub-Systems of InterestTorque ConverterEngineTransmissionDifferentia

3、lTiresCarBodyTransmissionPurpose: provide large power at all vehicle velocitiesTransmissionmorecompactsunplanetringModel of a TransmissionAssumptions:No friction or other lossesNo inertiaReduces the rotational velocity:Increases the torquewhere n is the transmission ratio and subscript in refers to

4、the shaft connected to the torque converter.Car Sub-Systems of InterestTorque ConverterEngineTransmissionDifferentialTiresCarBodyDifferentialModel of a Differential Same as TransmissionAssumptions:Car drives in a straight lineNo friction or other losses; no inertiaReduces the rotational velocity:Inc

5、reases the torquewhere n is the transmission ratio and subscript in refers to the shaft connected to the transmission.Model of a WheelAssumptions:Car drives in a straight lineNo slip; no tire deformation; no friction losses; no inertiaConverts rotational velocity into translational velocity:Converts torque into force:where R is the radius of the wheel.Model of the Car BodyWind Resistance:Gravitational Force:Tire Resistance: Putting It All TogetherExamples of Other Models in Vehicle DesignComp