Function of automobile engine block group
The block group is the bracket of the engine and an assembly body of the crank connecting rod mechanism, valve train and main components of the engine systems.
Car engine Composition of the engine block
1. Cylinder block
Is the main body of the engine. It connects the cylinders and the crankcase into one, and is where the pistons, crankshaft and other parts are installed. Support frame for accessories. [View details>>]
2. Cylinder head
The cylinder head is a valve mechanism in internal combustion engines. It is mainly used to close the upper part of the cylinder, form a combustion chamber, and serve as a camshaft. And the rocker shaft and the support of the intake and exhaust pipes. It mainly sucks air into the cylinder, and the spark plug ignites the combustible mixture, driving the piston to do work, and the exhaust gas is discharged from the exhaust pipe. [View details>>]
3. Cylinder head cover
(1) Covers and seals the cylinder head to keep the oil inside while isolating dirt and moisture contaminants. outside;
(2) Isolate the engine oil from the air;
(3) Act as the oil filling port;
(4) Can be used as a sensor installation support , including camshaft position and camshaft timing sensors.
4. Cylinder gasket
The cylinder gasket is a seal between the top surface of the body and the bottom surface of the cylinder head. Its function is to keep the cylinder seal from leaking and to keep the coolant and oil flowing from the body to the cylinder head from leaking. The cylinder gasket bears the pressure caused by tightening the cylinder head bolts, and is subject to the high temperature and pressure of the combustion gases in the cylinder, as well as corrosion from the engine oil and coolant.
5. Main bearing cap
The main bearing cap is a part installed on the main bearing support diaphragm of the cylinder block or crankcase and used as half of the main bearing seat. Its function is:
(1) Prevent dust and other foreign matter from invading the raceway of the rolling elements;
(2) Ensure that the lubricant (grease) only acts on the rolling elements and raceways Works without overflowing.
(3) To a certain extent, prevent wearing parts such as rolling element cages from being damaged by external forces.
6. Oil pan
The oil pan is the lower half of the crankcase, also called the lower crankcase. Its function is to close the crankcase as the shell of the oil storage tank to prevent impurities from entering, collect and store the lubricating oil flowing back from the friction surfaces of the diesel engine, dissipate part of the heat, and prevent the oxidation of the lubricating oil. [View details>>]
7. Cylinder liner
The cylinder liner is a cylindrical part, which is placed in the cylinder block hole of the machine body and is pressed by the cylinder head.Tightly fixed. The piston reciprocates in its inner hole and is cooled by cooling water outside. The functions of the cylinder liner are:
1. Together with the cylinder head and piston, it forms the cylinder working space.
2. The cylinder liner of the cylindrical piston diesel engine bears the piston side thrust and becomes the lead of the piston’s reciprocating motion.
3. Transfer the heat of the piston assembly and itself to the cooling water to make the working temperature appropriate.
4. The cylinder liner of the two-stroke diesel engine is equipped with air ports, which are opened and closed by the piston to realize gas distribution. 【View details>>】
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