1、,Hybrid-Electric Vehicle and VR6/W12 Engine 混合电动车和VR6/W12发动机,Unit 2,Passage A,Whats the characteristic of HEV?,Forefront of automobile developmentCombine the benefit of internal combustion engine and electric motorImprove the fuel economy without sacrificing performance or driving rangeConvert the e
2、nergy wasted during coasting and braking into electricityUse the electric motor to assist the engine when accelerating or hill climbing and in low speed driving conditions where internal combustion engines are least efficient.,Passage A,Hybrid-Electric Vehicle 混合电动车,Passage A,Hybrid-Electric Vehicle
3、 混合电动车,Passage A,Gasoline/diesel engineFuel tankElectric motorGeneratorBatteriesTransmission,汽油/柴油机油箱电机发电机电池组传动装置,Includes:,Passage A,Hybrid-Electric Vehicle 混合电动车,Passage A,http:/ A,Gasoline/diesel engine 汽油/柴油机,Passage A,Much like the one you will find on most carsSmaller and uses advanced technol
4、ogiesReduce emissions and increase efficiency,Passage A,Fuel tank 油箱,Passage A,Energy storage device for the engineGasoline/diesel oil has a much higher energy density than batteries doShould it be smaller than the ones of common cars ? Why?,Passage A,Electric motor / Generator 电机 / 发电机,Passage A,Ve
5、ry sophisticated / complicatedAct as a motor as well as generator, controlled by?When it needs to, it can draw energy from the batteries to accelerate the car. But (While) acting as a generator, it can slow the car down and return energy to the batteries.Generator acts only to produce electrical pow
6、er, used mostly on series hybrids.,Passage A,Batteries 电池组,Passage A,Energy storage device for the motorContinually power the auxiliary system, such as air conditioning and dashboard displays,Passage A,Transmission 传动装置,Passage A,Performs the same basic function as the transmission on a conventional
7、 carTransmits the engine/motor power to the car wheels,Passage A,How do hybrid-electric vehicle work ?,Passage A,Starting （启动）The gasoline engine “warms up”. If necessary, converts energy from the engine into electricity and stores it in the battery.Cruising （巡行）Engine powers the vehicle at cruising
8、 speeds. If necessary, provides power to the battery for later use.Passing （超车）The engine and the motor are both used to drive the car.,Passage A,How do hybrid-electric vehicle works ?,Passage A,Braking （刹车）Converts wasted energy from braking into electricity and stores it in the battery. The electr
9、ic motor is reversed and slows the vehicle down. If additional stopping power is needed, conventional friction brakes are also applied automatically.Parking （驻车）When the car is stopped, such as before the red light, the engine and electric motor shut off automatically in idling.,Passage A,New words
10、（生词）,Regenerative brakingPlug inEnergy densityPropulsion powerCruising speedStopping powerForefrontTransportationPotential Configure,SignificantAuxiliarySacrificePropelCoastingAccelerateIdlingPassingSophisticatedReversed,Passage A,Exercise 5,Passage A,VR6 and W12 Engine VR6/W12发动机,Passage B,VR6 Engi
11、ne,http:/www.thephirm.co.uk/pages/ArticlePage.aspx?sec=project&name=vr6,VR6 and W12 Engine VR6/W12发动机,Passage B,The V angle between cylinder is 15 rather than 60 or 90 founded in most conventional V6 engine designs.Comes from a combination of Vee and Reihenmotor.Like a in-line engine.Single cylinder
12、 block and head, compared with a conventional V6 which consists of 2 banks and 2 heads.Narrow width and excellent balancing, short overall length and compactness,VR6 Engine,VR6 and W12 Engine VR6/W12发动机,Passage B,Whats the length of the V6 and VR6 engine compared with in-line engine?How many camshaf
13、ts of VR6 engine?,VR6 Engine,http:/ 20, Paragraph 1,VR6 and W12 Engine VR6/W12发动机,Passage B,A combination of two VR6sMating two VR6 in an inclined angle of 72Thin connecting rods. P21,W12 Engine,http:/ A,New words （生词）,Valve gearsAsymmetricUniqueAccessibleEnsureApproachBoltNut Screw Washer,Cylinder
14、gasketVirtuallyBreathingVentilationTake advantage of P19, Final Para.Cross flow cylinder headExhaust passageExhaust manifoldSingle Over Head Camshaft (SOHC)Double Over Head Camshaft (DOHC)In comparison to,Passage A,Passage C: Have a Try,Classwork （课堂练习）,Troubleshooting Guide Description of problem:
15、You push on the clutch (离合)pedal, and it drops to the floor. With the pedal to the floor, you still cant change the gears. This problem may occur suddenly on some cars. On others changing gears may become more difficult each time you shift until you cant get it into gear. Probable causes: The clutch
16、 cable is broken, The clutch cable is disconnected. There is no fluid in the hydraulic clutch circuit. There is a leak in the hydraulic clutch circuit.,西华大学,XIHUA UNIVERSITY,交通与汽车工程学院,Faculty of Transportation and Automotive Engineering,Homework,Review the new word, phrases and expressions,Exercise 3, 4, 5, 6,西华大学,XIHUA UNIVERSITY,交通与汽车工程学院,Faculty of Transportation and Automotive Engineering,Thanks,
