Thirteenth, Cylinder block and piston
Preparation of materials-----------------13.1 Piston-------------------13.4
Failure diagnosis----------------13.2
Assembly of piston -------------13.5
Cylinder block-------------------13.3
13.1 Preparation materials
Points for Attentions:
All components should be washed and blew with compressed air before checking.
Functions of cylinder block: it provides space for gas compression, combustion and expansion, and
guide for the movement of piston. It also transfer some heat in the cylinder to the surrounding
cooling medium.
Functions of piston:
Withstand the pressure generated by the combustion of mixed gas in the cylinder, and to pass the
pressure to the connecting rod so as to drive the rotation of crankshaft.
To form combustion chamber together with cylinder head, etc.
To act as slide valve of air intake and air outlet, to timely press the fresh gas mixture in the
crankcase into the cylinder, to timely discharge the exhaust gas after combustion in the cylinder.
Preparation reference Unit：mm
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