What are the structural functions of the cylinder head?
- Category：NEWS
- Author：Admin
- PubTime： 2023-06-09
【Summary description】Fugou Longli Cylinder Cover Co., LTD. Structural function1. Working conditions and requirements of t....
What are the structural functions of the cylinder head?
【Summary description】Fugou Longli Cylinder Cover Co., LTD. Structural function1. Working conditions and requirements of t....
- Category：NEWS
- Author：Admin
- PubTime： 2023-06-09
1. Working conditions and requirements of the cylinder head: The cylinder head is required to withstand gas forces and mechanical loads caused by tightening the cylinder head bolts, as well as high thermal loads due to contact with high-temperature gas. To ensure good sealing of the cylinder, the cylinder head must not be damaged or deformed. For this purpose, the cylinder head should have sufficient strength and stiffness. In order to make the temperature distribution of the cylinder head as uniform as possible and avoid hot cracks between the intake and exhaust valve seats, the cylinder head should be well cooled.
2. Cylinder head materials: Cylinder heads are generally made of high-quality gray cast iron or alloy cast iron, while gasoline engines used in cars mostly use aluminum alloy cylinder heads.
3. Cylinder head construction: The cylinder head is a box shaped component with a complex structure. It is machined with intake and exhaust valve seat holes, valve guide holes, spark plug installation holes (gasoline engines) or fuel injector installation holes (diesel engines). There is also a water jacket, intake and exhaust ducts, and a combustion chamber or part of the combustion chamber cast inside the cylinder head. If the camshaft is installed on the cylinder head, there are also cam bearing holes or cam bearing seats and their lubricating oil channels machined on the cylinder head. The cylinder heads of water-cooled engines come in three structural forms: integral, segmented, and individual. In a multi cylinder engine, if all cylinders share a cylinder head, the cylinder head is called an integral cylinder head; If there is one cover for every two cylinders or one cover for every three cylinders, the cylinder head is a segmented cylinder head; If there is one cover per cylinder, it is a single cylinder head. Air cooled engines are all single body cylinder heads.
Fugou Longli Cylinder Cover Co., LTD. Cylinder head
The cover of the engine and the components that seal the cylinder, including the water jacket, valve, and cooling fins. The cylinder head is made of cast iron or aluminum alloy, which is the installation base of the valve mechanism and the sealing cover of the cylinder. The top of the cylinder and piston form the combustion chamber. Many have adopted a structure that integrates the camshaft support seat and tappet guide hole seat with the cylinder head. The damage to the cylinder head is often caused by the warping deformation of the sealing plane between the cylinder head and the cylinder hole (causing damage to the seal), cracks in the intake and exhaust valve seat holes, and thread damage during spark plug installation. In particular, the cylinder head poured with aluminum alloy has lower Hardness and relatively poor strength, which is easy to deform and damage, so the consumption is more than that of cast iron.
Company Address：
Changfeng Road, Machinery Industrial Park, Fugou County, Henan Province
Shortcut menu：
Home / About us / NEWS CENTER / Products / Factory / Contact us
Focus us
Copyright：Fugou Longli Cylinder Cover Co., LTD. 
豫公网安备41162102000075
豫ICP备2024069677号-1