What is the function of valve timing?
1 Answers
The function of valve timing is to coordinate with the operation of the piston cylinder liner, regularly opening and closing the intake and exhaust valves. Valve timing refers to the opening and closing moments of the intake and exhaust valves and the duration of their opening, expressed in terms of crankshaft rotation angles. Below is a related introduction to valve timing: 1. Overview: Valve timing refers to the actual opening and closing moments of the intake and exhaust valves, usually represented by a circular diagram showing the crankshaft rotation angles relative to the top and bottom dead center positions of the crank. During the gas exchange process of the engine, if exhaust can be thorough and intake can be sufficient, the charging efficiency can be improved, thereby increasing the engine's output power. For each working stroke of a four-stroke engine, the crankshaft rotates 180°. 1. Principle: Valve timing represents the opening moments and extended opening duration of the intake and exhaust valves in terms of crankshaft rotation angles, typically illustrated in a circular diagram. When explaining the working principle of a four-stroke engine, for the sake of theoretical analysis, the intake and exhaust processes are considered to be completed within one stroke of the piston, i.e., a 180° rotation of the crankshaft.
