What is the function of the cylinder head?
2 Answers
The functions of the cylinder head are: 1. To seal the cylinder, forming the combustion chamber together with the piston, and to withstand high-temperature and high-pressure gas; 2. The cylinder head bears the mechanical load caused by gas force and the tightening of cylinder bolts, while also enduring high thermal loads due to contact with high-temperature gas. The cylinder head is subjected to high-temperature and high-pressure gas and significant bolt preload, resulting in substantial mechanical stress. The complex structure of the cylinder head and severe temperature field non-uniformity lead to high thermal stress, which can cause cracks and overall deformation in severe cases. The cylinder head also contains cast water jackets, intake and exhaust ports, and the combustion chamber or part of the combustion chamber.
The cylinder head is a crucial component at the top of the engine. After driving for so many years, I feel it's like the engine's lid, sealing the cylinders to prevent high-pressure gases from escaping, which helps maintain efficient engine operation. It also secures small parts like intake valves, exhaust valves, and spark plugs, ensuring cleaner fuel combustion. I remember last time when the cylinder head gasket aged, the engine leaked gas, the car's power noticeably weakened, and white smoke cost me a lot in repairs. Regular checks on the sealing condition are essential to prevent overheating or coolant leaks, ensuring the engine's longevity for a longer drive.
