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1. The cylinder head is composed of water sleeve, gasIt is composed of door and cooling sheet, intake and exhaust door seat holes, valve duct holes, spark plug mounting holes (gasoline engine) or injector mounting holes (diesel engine). The function of the cylinder head is to seal the cylinder, form a combustion space with the piston, and withstand the effect of high-temperature and high-pressure gas.

2. The cylinder head is an important part of the engine used to seal the cylinder and form a combustion chamber. These include the side valve engine cylinder head, casting water sleeve, water inlet hole, water outlet hole, spark plug hole, bolt hole, combustion chamber, etc.

3. The function of the cylinder head is to close the upper part of the cylinder of the automobile engine and form a combustion chamber together with the piston top and cylinder wall. The cylinder head is usually made of high-quality gray cast iron or alloy cast iron, and gasoline engines are mostly made of aluminum alloy cylinder heads.

4. The cylinder head is an important part of the engine.One of the parts, its main function is to close the cylinder, support the camshaft, valve, fuel injector and other accessories, and guide cooling water and oil.

5. The cylinder head is composed of water sleeve, valve and cooling sheet inlet, exhaust valve seat hole, valve duct hole, spark plug mounting hole (gasoline engine) or injector mounting hole (diesel engine). The function of the cylinder head is to seal the cylinder and the piston to form a combustion space and withstand the role of high-temperature and high-pressure gas.

How to judge the cylinder head fault

In order to determine whether it is a cylinder head failure, we can use a variety of methods, such as carefully observing the color of the smoke emitted by the engine, checking whether the engine coolant is normal, etc. At the same time, we can also use professional tools such as car diagnostic instruments and pressure gauges to check the normal operation status of the engine.

After the connecting rod bolt is loosened, it also causes the piston to inertia to hit the cylinder head. Qualified bolts should be selected and tightened as required, and the old bolts are prohibited.

The cylinder head is leaking. There are pale yellow foam at the air leak. When the air leak is serious, it will make a "beep" sound, sometimes accompanied by water leakage or oil leakage. During disassembly and inspection, there is obvious carbon accumulation in the corresponding cylinder head plane and nearby cylinder head bolt holes.

Remover the valve chamber cover and gasket. Remove the valve rocker arm assembly and take out the valve putter; gradually loosen and remove the cylinder head bolt three times in a symmetrical order from both ends to the middle, and remove the cylinder head and cylinder cushion.

Cylinder wear fault phenomenon 1 There is an obvious tapping sound when cold starts, the temperature rises, and the sound weakens or disappears. 2 cylinders low pressure. 3 Sometimes the exhaust pipe discharges blue smoke, and blue smoke comes out of the oil outlet.4 The power of the engine decreases. 5 Increase in fuel consumption.

The air runs between the adjacent two cylinders. Under the premise of not turning on the decompression, the crankshaft is shaken, and the pressure of the two cylinders is not enough. When starting the engine, there is a phenomenon of black smoke, and the engine speed decreases significantly, showing insufficient power.

The function and characteristics of the engine cylinder head

What is the composition and function of the cylinder head? The structural characteristics of the engine cylinder head. The structural forms of the cylinder head are integral, block and monomer. The function of the cylinder head is to seal the cylinder and form a combustion space with the piston, and It can withstand the effect of high-temperature and high-pressure gas.

The main function of the cylinder head is to seal the cylinder to form a closed space so that the piston can normally compress fuel and mixed gas to generate power.

The cylinder head is used to seal the cylinder and form a combustion chamber. Side valve engine cylinder head, casting water sleeve, water inlet hole, water outlet hole, spark plug hole, bolt hole, combustion chamber, etc. The cylinder head function has a decisive impact on the engine working characteristics of the cylinder head (such as output power, torque and exhaust emission characteristics, fuel consumption and noise).