The reasons for the cylinder pressure drop of LED display vehicles
Time:2019-10-11
Views:1323
Does your LED advertising vehicle have difficulty starting the engine? Is it powerless to drive? Does fuel consumption increase? If it is, it is the LED advertising engine cylinder pressure is too low. You need to enter the engine cylinder of the LED advertising vehicle, otherwise it will affect your use. Here are a few reasons why the cylinder pressure of the LED advertising vehicle engine may drop.
The pressure of the cylinder depends on the ratio of the total cylinder volume to the combustion chamber volume and the degree of sealing of the cylinder. The reasons for the cylinder pressure drop are as follows:
1. The lubricating oil is too thin or lacks oil;
2. There is a leak in the core part of the spark plug;
3. The cylinder head fastening bolt has insufficient torque or screw slip and the screw is too long;
4. The cylinder head is flat or deformed, especially between adjacent cylinders;
5. The plane of the cylinder block is not flat or the convex and concave parts are too large, especially between adjacent cylinders;
6. The cylinder bed (cylinder head gasket) is not thick and uneven, and there are leaks in some places;
7. The valve is not closed tightly, the working surface is flushed, the valve foot clearance is too small, and the spring function is out of balance;
8. The valve seat ring is loose or not round;
9. The piston ring is weakened or leaks light on the contact surface of the cylinder wall;
10. Piston ring opening clearance, 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 the cylinder;
12. The cylinder wall has a napped place, and the cylinder has a cone or an out-of-round;
13. The connecting rod is bent and twisted to form a piston trap cylinder or a running cylinder;
14. The crankshaft thrust surface (end gap surface) is ablated, and the crankshaft front and rear turbulence is too large, which affects the link swinging back and forth.
1. The lubricating oil is too thin or lacks oil;
2. There is a leak in the core part of the spark plug;
3. The cylinder head fastening bolt has insufficient torque or screw slip and the screw is too long;
4. The cylinder head is flat or deformed, especially between adjacent cylinders;
5. The plane of the cylinder block is not flat or the convex and concave parts are too large, especially between adjacent cylinders;
6. The cylinder bed (cylinder head gasket) is not thick and uneven, and there are leaks in some places;
7. The valve is not closed tightly, the working surface is flushed, the valve foot clearance is too small, and the spring function is out of balance;
8. The valve seat ring is loose or not round;
9. The piston ring is weakened or leaks light on the contact surface of the cylinder wall;
10. Piston ring opening clearance, 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 the cylinder;
12. The cylinder wall has a napped place, and the cylinder has a cone or an out-of-round;
13. The connecting rod is bent and twisted to form a piston trap cylinder or a running cylinder;
14. The crankshaft thrust surface (end gap surface) is ablated, and the crankshaft front and rear turbulence is too large, which affects the link swinging back and forth.
.png)
.png)
Mailme
18672222184