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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 development Combine the benefit of internal combustion engine and electric motor Improve the fuel economy without sacrificing performance or driving range Convert th
2、e energy wasted during coasting and braking into electricity Use 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 Vehi
3、cle混合电动车,Passage A,Gasoline/diesel engine Fuel tank Electric motor Generator Batteries Transmission,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,bbs.sciencenet/forum.php?mod=viewthread&tid=101417,Passage A,Gasoline/diesel engine汽油/柴油机,Passage A,Much like the o
4、ne you will find on most cars Smaller and uses advanced technologies Reduce emissions and increase efficiency,Passage A,Fuel tank油箱,Passage A,Energy storage device for the engine Gasoline/diesel oil has a much higher energy density than batteries do Should it be smaller than the ones of common cars
5、? Why?,Passage A,Electric motor / Generator电机 / 发电机,Passage A,Very sophisticated / complicated Act 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 ene
6、rgy to the batteries. Generator acts only to produce electrical power, used mostly on series hybrids.,Passage A,Batteries电池组,Passage A,Energy storage device for the motor Continually power the auxiliary system, such as air conditioning and dashboard displays,Passage A,Transmission传动装置,Passage A,Perf
7、orms the same basic function as the transmission on a conventional car Transmits 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
8、it in the battery. Cruising （巡行） Engine powers the vehicle at cruising 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 ener
9、gy from braking into electricity and stores it in the battery. The electric 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 engin
10、e and electric motor shut off automatically in idling.,Passage A,New words （生词）,Regenerative braking Plug in Energy density Propulsion power Cruising speed Stopping power Forefront Transportation Potential Configure,Significant Auxiliary Sacrifice Propel Coasting Accelerate Idling Passing Sophistica
11、ted Reversed,Passage A,Exercise 5,Passage A,VR6 and W12 EngineVR6/W12发动机,Passage B,VR6 Engine,thephirm.co.uk/pages/ArticlePage.aspx?sec=project&name=vr6,VR6 and W12 EngineVR6/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. Come
12、s from a combination of Vee and Reihenmotor. Like a in-line engine. Single cylinder 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 EngineVR6/W12发动机,Passage B,What
13、s the length of the V6 and VR6 engine compared with in-line engine? How many camshafts of VR6 engine?,VR6 Engine,uzone.univs/news2_2019_146898.html,Page 20, Paragraph 1,VR6 and W12 EngineVR6/W12发动机,Passage B,A combination of two VR6s Mating two VR6 in an inclined angle of 72 Thin connecting rods. P2
14、1,W12 Engine,reviews.xgo/4/41756.html,Passage A,New words （生词）,Valve gears Asymmetric Unique Accessible Ensure Approach Bolt Nut Screw Washer,Cylinder gasket Virtually Breathing Ventilation Take advantage of P19, Final Para. Cross flow cylinder head Exhaust passage Exhaust manifold Single Over Head
15、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: 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
16、 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 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,Exerci
