What is the function of the cylinder head?

The cylinder head is used to close the cylinder and form the combustion chamber. Engine cylinder head with a side valve, cast with a water jacket, water inlet hole, water outlet hole, spark plug hole, screw hole, combustion chamber, and so on.

• What is the function of the cylinder head?

• What are the structural characteristics of cylinder heads?

• What is the importance of a cylinder head?

What is the function of cylinder head?

cylinder head function: The cylinder head has a decisive influence on engine running characteristics (e.g. output power, torque and exhaust gas behavior, fuel consumption and noise behavior).

Engine control almost always takes place in the cylinder head. The cylinder head has to perform the following tasks:

a. absorb forces; b. hold the valve train; c. hold the air exchange passage; d. hold the spark plug; e. hold the coolant and lubricating oil supply passage; f. form the cylinder cover; g. Dissipate heat to the coolant; h. hold the auxiliaries and sensors.

As the cylinder head, it forms the combustion chamber roof. Together with the piston geometry, it determines the shape of the combustion chamber. The combustion chamber is enclosed by the piston, cylinder head and wall.

What are the structural characteristics of cylinder heads?

The cylinder head is subjected to gas forces and mechanical stress caused by the tightening of the cylinder head bolts, but also by contact with high-temperature gas and high thermal stress. To ensure good sealing of the cylinder, the cylinder head must not be damaged or deformed. For this reason, the cylinder cover should have sufficient strength and rigidity. In order to make the temperature distribution in the cylinder head as uniform as possible, to avoid thermal cracking between the exhaust valve seats, a good cylinder head should be suitable for cooling. Installation, the connecting surface of the cylinder gasket is not clean, tighten the nuts of the cylinder head bolts in the wrong order, the torque is not large enough or uneven, the cylinder liner on the surface of the engine body above the level of the size is not enough or not equal, resulting in air leaks and burnt cylinder gasket.

What is the importance of the cylinder head?

The cylinder head cover is also responsible for crankcase ventilation. As the piston moves through the cylinder, pressure builds up inside the engine. Left unattended, this pressure can cause the seals to leak, reducing engine efficiency. To avoid this, a tube is used to connect the cylinder head cover to the air intake for combustion air. This tube can be associated with slotted hose fittings, unions, or quick-change fittings. An oil baffle or filter in the cylinder head cover minimizes oil flow into the air intake.

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