汽车工作原理英文

Click To Edit Master Title Style,Click to edit Master text styles,Second level,Third level,Fourth level,How Does A Car Work?,Car Sub-Systems of Interest,Torque Converter,Engine,Transmission,Differential,Tires,CarBody,Engine,Four Cycles,Intake,Compression,Combustion,Exhaust,Simplified Engine Model,Use SI units! Torque in Nm, velocity in rad/s and Power in W,Car Sub-Systems of Interest,Torque Converter,Engine,Transmission,Differential,Tires,CarBody,Torque Converter,Torque Converter,The model of a torque converter is fairly complex and highly nonlinear,We 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 Interest,Torque Converter,Engine,Transmission,Differential,Tires,CarBody,Transmission,Purpose: provide large power at all vehicle velocities,Transmission,morecompact,sun,planet,ring,Model of a Transmission,Assumptions:,No friction or other losses,No inertia,Reduces the rotational velocity:,Increases the torque,where,n,is the transmission ratio and subscript,in,refers to the shaft connected to the torque converter.,Car Sub-Systems of Interest,Torque Converter,Engine,Transmission,Differential,Tires,CarBody,Differential,Model of a Differential Same as Transmission,Assumptions:,Car drives in a straight line,No friction or other losses; no inertia,Reduces the rotational velocity:,Increases the torque,where,n,is the transmission ratio and subscript,in,refers to the shaft connected to the transmission.,Model of a Wheel,Assumptions:,Car drives in a straight line,No slip; no tire deformation; no friction losses; no inertia,Converts rotational velocity into translational velocity:,Converts torque into force:,where,R,is the radius of the wheel.,Model of the Car Body,Wind Resistance:,Gravitational Force:,Tire Resistance:,Putting It All Together,Examples of Other Models in Vehicle Design,Computational Fluid Dynamics,Noise, Vibration,and Harshness,Crash Testing,Thermal,Stress Analysis,