ǰ��
unit 1 engine overview
  passage a kinds of engines
  passage b engine types and operating principles
  passage c have a try
unit 2 hybrid-electric vehicle and vr6/w12 engine
  passage a hybrid-electric vehcicle
  passage b vr6 and w12 enghine
  passage c have a try
unit 3 valve train and variable valve timing
  passage a valve train
  passage b variale valve timing
  passage c have a try
unit 4 engine ignition system and starting system
  passage a ignition system
  passage b starting system
  passage c have a try
unit 5 the power train
  passage a power train(��)
  passage b power tarin(��)
  passage c have a try
unit 6 automobile brake system
  passage a brake system(��)
  passage b brake system(��)
  passage c have a try
unit 7 automobile suspension system
  passage a suspension system
  passage b suspension types
  passage c have a try
unit 8 automobile steering system
  passage a steering system
  passage b power steering
  passage c have a try
unit 9 engine lubrication and cooling system
  passage a lubrication system
  passage b colling system
  passage c have a try
unit 10 srs airbag and air conditioning system
  passage a srs airbag
  passage b air conditioning system
  passage c have a try
glossary���~�R����
phrases and expressions�����Z���~�M��
references�������īI��