What cause the cylinder pressure of the engine of the LED advertising car to drop?
Time:2019-11-27
Views:1744
Does the LED advertising vehicle have difficulty starting the engine? Is it weak to drive? Does fuel consumption increase? If so, the engine cylinder pressure of the LED advertising car is too low. You need to inspect the engine cylinder of the LED advertising car, otherwise it will affect your use.
The following points may cause the cylinder pressure of the engine of the LED advertising car to drop.
The pressure of the cylinder depends on the ratio of the total volume of the cylinder to the volume of the combustion chamber and the degree of sealing of the cylinder. The reasons for the decrease in cylinder pressure are mainly the following:
1. The lubricant is too thin or lacks oil;
2. There is a leak in the porcelain core of the spark plug;
3. The torque of the cylinder head fastening bolt is not enough, or the screw slide buckle or the screw is too long;
4. The plane of the cylinder head is uneven or deformed, especially between adjacent cylinders;
5. The flat surface on the cylinder block or the convex and concave parts are too large, especially between adjacent cylinders
6. The cylinder bed (cylinder gasket) is uneven and there are local leaks;
7. The valve is not tightly closed, the working surface is flushed out, the valve foot clearance is too small, and the spring function is out of adjustment
8. The valve seat ring is loose or out of round;
9. The elasticity of the piston ring weakens or light leaks from the contact surface with the cylinder wall;
10. Piston ring opening gap, wall gap is too large, piston clamp ring, pull cylinder;
11. The gap between the piston and the cylinder wall is too large, and the piston knocks on the cylinder;
12. There is a burr on the cylinder wall, and the cylinder tube has a tapered surface or out of round;
13. The connecting rod is bent and twisted to form a piston trap or running cylinder;
14. The crankshaft thrust surface (end gap surface) is ablated, and the amount of crankshaft front-back movement is too large, which affects the front-back swing of the connecting rod.
The following points may cause the cylinder pressure of the engine of the LED advertising car to drop.
The pressure of the cylinder depends on the ratio of the total volume of the cylinder to the volume of the combustion chamber and the degree of sealing of the cylinder. The reasons for the decrease in cylinder pressure are mainly the following:
1. The lubricant is too thin or lacks oil;
2. There is a leak in the porcelain core of the spark plug;
3. The torque of the cylinder head fastening bolt is not enough, or the screw slide buckle or the screw is too long;
4. The plane of the cylinder head is uneven or deformed, especially between adjacent cylinders;
5. The flat surface on the cylinder block or the convex and concave parts are too large, especially between adjacent cylinders
6. The cylinder bed (cylinder gasket) is uneven and there are local leaks;
7. The valve is not tightly closed, the working surface is flushed out, the valve foot clearance is too small, and the spring function is out of adjustment
8. The valve seat ring is loose or out of round;
9. The elasticity of the piston ring weakens or light leaks from the contact surface with the cylinder wall;
10. Piston ring opening gap, wall gap is too large, piston clamp ring, pull cylinder;
11. The gap between the piston and the cylinder wall is too large, and the piston knocks on the cylinder;
12. There is a burr on the cylinder wall, and the cylinder tube has a tapered surface or out of round;
13. The connecting rod is bent and twisted to form a piston trap or running cylinder;
14. The crankshaft thrust surface (end gap surface) is ablated, and the amount of crankshaft front-back movement is too large, which affects the front-back swing of the connecting rod.
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