Shop IB18-7023 (Yuchai 85) distribution valve | Partsdic®

A distribution valve, also known as a camshaft or timing valve, is an essential component in an internal combustion engine.

It controls the opening and closing of the intake and exhaust valves, allowing the proper mixture of air and fuel to enter the combustion chamber and the exhaust gases to be expelled.

Distribution valves are typically designed to meet certain specifications and requirements to ensure optimal engine performance and efficiency. Some common specifications that may apply to distribution valves include:

Material: Distribution valves are often made of high-strength alloys or steels to withstand the operating conditions within the engine, including high temperatures and pressures.

Design: The design of the distribution valve can vary depending on the engine's configuration and requirements. It may have a flat or rounded profile, with specific dimensions and angles to optimize valve lift and duration.

Valve Lift: The valve lift refers to the maximum distance the valve opens during the engine's operation. It affects the amount of air and fuel that can enter the combustion chamber, thereby influencing the engine's power output.

Duration: The duration of the valve refers to the time the valve remains open during each engine cycle.

It determines the engine's breathing capabilities and can influence factors such as torque, power, and emissions.

Timing: The timing of the distribution valve determines when it opens and closes relative to the engine's piston position. Proper valve timing is crucial for optimal engine performance and efficiency.

Actuation Mechanism: The distribution valve can be operated by various mechanisms, such as a camshaft, pushrods, rocker arms, or overhead camshafts (OHC). The choice of actuation mechanism depends on the engine's design and requirements.

Lubrication and Cooling: Distribution valves may require lubrication and cooling systems to ensure smooth operation and prevent overheating. This can involve the use of engine oil or coolant to maintain the valve's performance and longevity.

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