Is the valve head e intake or exhaust?

The full name of e is exit, which means exhaust, intake is I, and I stands for intake, which is the abbreviation of in.

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. A good cylinder and the top of the piston form the combustion chamber. Many adopt the structure that camshaft support seat and tappet guide hole seat are cast into a whole with cylinder head.

The damage phenomena of cylinder head are mostly deformation of sealing surface between cylinder head and cylinder hole (sealing failure), cracking of intake and exhaust valve seat hole and falling off of spark plug installation thread. Especially, the cylinder head made of aluminum alloy consumes more than the cylinder head made of cast iron because of its low hardness, relatively poor strength and easy deformation and damage.

Extended data

Precautions:

1, the cylinder head bolts should be tightened evenly, and the oil supply time should be adjusted correctly.

2. Add soft water to the water tank, and change the water as little as possible.

3, diesel engine should avoid long-term overload work.

4. When the engine is working, the water tank is short of water occasionally, so the engine should not be turned off immediately, but water should be added slowly at low speed. Don't add cold water after the engine is hot, wait until the water temperature is lower than 40℃ before stopping. In cold winter, you can't add boiling water immediately when you start the machine. You should heat the water first and then add boiling water.

5. Check whether the cooling water hole is unblocked during assembly. Regularly clean the cooling system with alkaline solution to remove scale and oil stain in time.

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