陈长梅陈长梅One.Crank-Connecting Rod MechanismCrank-connecting rod mechanism consists of piston-connecting rod group,crankshaft flywheel group,engine block group.1The Engine Block Group（1）The Cylinder BlockThe cylinder block is the basic part of the engine.It forms the main framework or foundation of the engine.Many parts of the engine are fixed to it.These items include water pump,oil pan,flywheel or clutch housing,ignition distributor,oil pump,fuel pump,and cylinder head.（2）The Cylinder HeadThe cyli
