Generally camshaft control valve when it is closed or open. There are two types of engine more used valve mechanism such as 4 stroke cycle engine and 2 stroke cycle engine. Valve should be open and closed time to time which is more preferable and helpful by control camshaft. There are three types of valves one is Rotary valve, Poppet Valve and another is sleeve valves. Valve and Valve Mechanism: For exhaust gas which is residue and input of cylinder air fuel mixture which should be provide time to time, all of this input and output from a cylinder or a system controlled by valves. Among of the three valves types Poppet valves is more popular and used worldwide universal automobile engine. Poppet valve mainly contain a circular disc which is up and down with a spring. When valves open spring must be applied external force. But now scientist is more developed their technology and process such when spark and suction occurred in c
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