Internal Combustion Engine -Spark plug or fuel injector Valve Power Top Clearance dead center volume Bore Ignition Cylinder Stroke wall Exhaust valve Exhaust opens Bottom valve dead center LPiston closes Compression Reciprocating Exhaust motion Intake valve closes Intake Crank mechanism 厂、 二一、 Rotary I Top dead 1 Bottom motion center dead centor Displacement 上游充通大率 May15,2018 2 SHANGHA BAO TONG LINIERSITYMay 15, 2018 2 Internal Combustion Engine Ignition