Engine Lubrication System. Step I. Duty Report Step II. Review Review what they learnt in the last...
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Transcript of Engine Lubrication System. Step I. Duty Report Step II. Review Review what they learnt in the last...
Engine Lubrication System
Step I. Duty ReportStep II. Review Review what they learnt in the last classThe purpose of using a cooling systemtwo different types and their main differencesRecite the new wordsStep III. Reading materialAsk the students read the whole text and get the
main ideaDiscuss about the text
Engine Lubrication System
Step IV. Engine Lubrication SystemNew words:Check the pronunciation of the new wordsmain usage of the wordsText:We can reduce friction to a considerable degree
by the use of lubrication oil.
Engine Lubrication System
lubrication oil: the four main functiona protective coatingabsorb and carry the heatwash off dirtabsorb shocks
Engine Lubrication System
What’s lubrication oil made from? Two types of engine lubricating systems
splash pressure/force feed combination of the two types
main function (passage 8) main units (passage 9-17)
Engine Lubrication System
Splash lubrication(飞溅润滑)
Pressure lubrication(压力润滑)
Grease lubrication (润滑脂润滑)