《汽车理论》课程教学课件（英文讲稿）第1章 汽车动力性 Acceleration Performance 1.0 Forward（引言）1.1 Evaluation Index（评价指标）

Chapter 1AccelerationPerformance汽车动力性1.0 Forward (引言）1.1EvaluationIndex（评价指标）1.2DrivingMechanicsofVehicle（汽车驱动力和行驶阻力)1.3TractiveForce &DrivingResistanceSpeedCharacteristics andDynamic Characteristics（驱动力）行驶阻力平衡图与动力特性图）l.4 Traction-Limited Acceleration and AdhesionRatio（汽车驱动-附着条件及附着率）1.5PowerEquilibrium（汽车的功率平衡）1Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance Chapter 1 Acceleration Performance 汽车动力性 1.0 Forward(引言) 1.1 Evaluation Index(评价指标) 1.2 Driving Mechanics of Vehicle(汽车驱动力和行驶阻 力) 1.3 Tractive Force & Driving Resistance—Speed Characteristics and Dynamic Characteristics（驱动力- 行驶阻力平衡图与动力特性图） 1.4 Traction-Limited Acceleration and Adhesion Ratio(汽车驱动-附着条件及附着率) 1.5 Power Equilibrium(汽车的功率平衡) 1

Forward（引言）Definitionof AccelerationPerformance（汽车动力性定义）：The average speed which thevehicle can get under good andflat road.在良好、平直的路面上行驶时所能达到的平均行驶速度2Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance Forward(引言) 2 Definition of Acceleration Performance (汽车动力性定义): The average speed which the vehicle can get under good and flat road. 在良好、平直的路面上行驶 时所能达到的平均行驶速度

Main study content主要研究内容>MechanicsAnalyzing（分析受力）：>SetupDrivingEquation（建立行驶方程式);>Analyzing acceleration performance withgraph （or program) accordingto theevaluationindex．（以图、表（或编程）的形式，按汽车动力性评价指标，确定汽车的动力性）。3Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance Main study content 主要研究内容 3 Mechanics Analyzing (分析受力); Set up Driving Equation (建立行驶方程 式) ; Analyzing acceleration performance with graph （or program）according to the evaluation index. (以图、表（或编程）的 形式，按汽车动力性评价指标，确定汽车的 动力性)

1.1 Evaluation Index（评价指标）最高车速uamgx(km/h)MaximumVehicleSpeed加速时间t (s)AccelerationTime最大爬坡度 (%)maxMaximumGradeability4Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance 1.1 Evaluation Index （评价指标） 最高车速ua max(km/h) 加速时间t (s) 最大爬坡度imax (%) Maximum Vehicle Speed Acceleration Time Maximum Gradeability 4

1.Maximum Vehicle Speed (Velocity)最高车速uLamax(1) Definition: The maximum speed whichthe vehicle can get under good and flat roadwith fully rated load（汽车在满载时在水平良好路面上所能达到的最高行驶速度。）(实验(2) Actual Measurement of uamax方法)5Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance 1.Maximum Vehicle Speed (Velocity) 最高车速ua max （1）Definition：The maximum speed which the vehicle can get under good and flat road with fully rated load. （汽车在满载时在水平良好路面上所能达 到的最高行驶速度。) （2）Actual Measurement of ua max：(实验 方法) 5

DataSUVCar奇瑞QQ0.8130km/h宝马X5(4.4L)230km/h波罗1.4172km/h陆虎览胜(4.0L)210km/h本田雅阁2.4219km/h宝马X5(3.0L)202km/h奥迪A41.8T220km/h197km/h大众途锐（3.0L）捍马H2(6.0L)180km/h宝马530i250km/h175km/h帕杰罗速跑(3.0L)奔驰E280250km/h宾利雅致（6.8L）270km/h250km/h迈巴赫（5.5L）6Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance Data Car 奇瑞QQ 0.8 130km/h 波罗 1.4 172km/h 本田雅阁 2.4 219km/h 奥迪A4 1.8T 220km/h 宝马530i 250km/h 奔驰E 280 250km/h 宾利雅致(6.8L ) 270km/h 迈巴赫(5.5L ) 250km/h 6 SUV 宝马X5(4.4L) 230km/h 陆虎览胜(4.0L) 210km/h 宝马X5(3.0L) 202km/h 大众途锐(3.0L) 197km/h 捍马H2(6.0L) 180km/h 帕杰罗速跑(3.0L) 175km/h

of Sports CarUamax法拉利575MMaranellouamax=325km/h7Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance Uamax of Sports Car 7

of Sports CarUamax宝时捷911Turbouamax=310km/h8Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance Uamax of Sports Car 8

Uof Sports Caramax兰博基尼Murcielag0 uamax=330km/h9Chapter1AccelerationPerformance

Chapter 1 Acceleration Performance Uamax of Sports Car 9

（加速能力）2.AccelerationAbility（1）Theaccelerationtimeforstarting（原地起步加速时间）TestCondition（实验条件）：（最大加速度）Fullenginepower（最佳换挡时机）.Optimalshiftpointbetweengearswhicharefromlowgear（起步挡）for start-up to high：（高档）forfueleconomy.gearTis the time needed by the vehicle to accelerate from O toafixedvelocity(100km/hor60mile/h(96.6km/h))underthe above test condition or the time needed to pass throughafixed distance(400mor/4mile(402.5m)（用起步挡起步，以最大的加速度（加速踏板至最大开度）按最佳换挡时机，逐次换至高挡，全力加速至某一车速所需时间，或通过某一预定距离所需时间。10Chapter1 AccelerationPerformance

Chapter 1 Acceleration Performance （1）The acceleration time for starting(原地起步加速时间) Test Condition (实验条件) : • Full engine power （最大加速度）； • Optimal shift point between gears（最佳换挡时机） which are from low gear（起步挡） for start-up to high gear （高挡） for fuel economy. T is the time needed by the vehicle to accelerate from 0 to a fixed velocity (100km/h or 60mile/h(96.6km/h)) under the above test condition or the time needed to pass through a fixed distance (400 m or ¼ mile(402.5m)). 【用起步挡起步，以最大的加速度（加速踏板至最大开度）， 按最佳换挡时机，逐次换至高挡，全力加速至某一车速所 需时间，或通过某一预定距离所需时间。】 2. Acceleration Ability（加速能力） 10