What is the working principle of a cylinder head?
1 Answers
The working principle of a cylinder head is to seal the cylinder, form the combustion chamber together with the piston, and withstand high-temperature and high-pressure combustion gases. Below is a detailed introduction to cylinder heads: 1. Overview: The function of a cylinder head is to seal the cylinder, form the combustion chamber together with the piston, and withstand the effects of high-temperature and high-pressure combustion gases. The cylinder head bears mechanical loads caused by gas forces and the tightening of cylinder bolts, as well as high thermal loads due to contact with hot combustion gases. To ensure a good seal for the cylinder, the cylinder head must neither be damaged nor deformed. 2. Cylinder head materials: Cylinder heads are generally cast from high-quality gray cast iron or alloy cast iron, while gasoline engines for passenger cars often use aluminum alloy cylinder heads. Aluminum alloy has excellent thermal conductivity, which helps increase the engine's compression ratio. Additionally, it has superior casting properties, making it suitable for casting complex structural parts. However, it is essential to pay attention to the cooling of aluminum alloy cylinder heads and control the temperature of the bottom plane below 300°C. Otherwise, overheating of the bottom plane can cause plastic deformation and warping.
