What is Lead-Lag and Overlap of Valve
itipapers Staff asked 4 years ago
What is Lead-Lag and Overlap of Valve define valve lag what is valve overlap valve overlap advantages what determines the amount of valve overlap importance of valve timing diagram when does valve overlap occur
1 Answers
itipapers Staff answered 1 year ago
Lead— The opening of the engine-valve before time is called “lead”.
Lag—The opening of the engine-valve after its proper time is “lag”.
Overlap-The duration for which the inlet and the exhaust valve remain open together is called overlap of valve. According to the principle the inlet valve should open at T.D.C. and close at B.D.C. Automobile Engineering Similarly, the exhaust valve should open at B.D.C. and close at T.D.C.