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List of contents of this article:

• 1. How many ways are there to connect the piston pin with the piston and connecting rod?
• 2、What is the cause of the abnormal noise of the engine piston pin
• 3, What is the cause of the abnormal sound of the engine piston pin
• 4. How to solve the loosening of the engine piston pin?
• 5, There are two ways to connect the piston pin
• 6, What is the reason for the abnormal sound of the engine piston pin?

How many ways are there to connect the piston pin with the piston and connecting rod?

1. There are three ways to connect the piston pin and the connecting rod head of the piston: floating, semi-floating and full floating.

2The main function of the piston pin is to connect the piston and the connecting rod, and transmit the gas pressure at the top of the piston and the inertial force of the reciprocating movement of the piston group to the connecting rod. At present, there are two combinations of piston pin and piston pin seat and connecting rod small end bushing hole, one is semi-floating piston pin, and the other is full floating piston pin, that is, piston pin and pin.

3. Full floating connection When the engine is working, the piston pin, the connecting rod head and the piston pin seat all have relative movement, so that the piston pin can swing freely in the connecting rod bushing and piston pin seat, so that the wear is uniform.

4. There are two ways to connect the connecting rod head and the piston pin in the car engine, namely full float and semi-float. Full floating: At the normal operating temperature of the engine, the piston pin can be rotated in the connecting rod head hole and the piston pin seat hole, with little wear and uniformity, which is widely used.

What is the cause of the abnormal sound of the engine piston pin

The reasons for the abnormal sound of the piston pin of the motor are as follows: the piston pin and the small end bushing of the connecting rod are worn, and the gap is too large; the gap between the piston pin and the piston pin seat hole is large; the oil pressure is too low, the oil splash is insufficient, and the lubrication effect is poor;The piston pin lock ring falls off, so that the piston pin can move freely. The piston pin is broken.

The reasons for the abnormal sound of the engine pin are as follows: the piston pin and connecting rod small head bushing are worn, and the gap is too large; the gap between the piston pin and the piston pin seat hole is large; the oil pressure is low, the oil splash is insufficient, and the lubrication effect is poor; the piston pin lock ring falls off, so that the piston pin can move freely; the piston pin is broken.

The main reason for the abnormal sound of the piston pin is that the bushing of the piston pin and connecting rod is excessively worn, the chimeric is loose, and the chimeric deviation of the bushing and connecting rod is too large.

Possible causes of abnormal piston noise: (1) the piston pin and connecting rod head are worn, and the gap is too large; (2) the gap between the piston pin and the piston pin is large; (3) the oil pressure is low, the oil splash is insufficient, and the lubrication effect is poor; (4) the piston pin lock ring falls off, allowing the piston pin to move freely;(5) The piston pin is broken.

What is the reason for the abnormal noise of the engine piston pin

The reasons for the abnormal sound of the engine piston pin are as follows: the piston pin and the small end bushing of the connecting rod are worn, and the gap is too large; the gap between the piston pin and the piston pin seat hole is large; machine The oil pressure is too low, the oil splash is insufficient, and the lubrication effect is poor; the piston pin lock ring falls off, so that the piston pin can move freely. The piston pin is broken.

The reasons for the abnormal sound of the engine pin are as follows: the piston pin and connecting rod small head bushing are worn, and the gap is too large; the gap between the piston pin and the piston pin seat hole is large; the oil pressure is low, the oil splash is insufficient, and the lubrication effect is poor; the piston pin lock ring falls off, so that the piston pin can move freely; the piston pin is broken.

Piston pinThe main reason for the abnormal sound is that the bushing of the piston pin and connecting rod is excessively worn, the chimeric is loose, and the chimeric deviation of the bushing and connecting rod is too large.

How to solve the loosening of the engine piston pin?

1. There are also some cars with loud wind noise, which is related to the shape of the car to a certain extent. Some cars may cause abnormal noise if the body parts are not well fixed. Generally, it can be solved by tightening screws.

2. The existence of most common abnormal sounds of the engine depends on the speed of the engine. Abnormal noise during idle or low-speed operation only exists during idle or low-speed operation.

3. The main faults and handling methods of the piston assembly are as follows: the erosion of the top of the piston, the sintering of the piston is presented at the top of the piston, the light one has a loose pit, and the heavy one has a local melting phenomenon.

4. Diagnostic method: change the size of the throttle, change the engine speed, and listen carefully at the front and both sides of the engine. If the sound of the front end and one side of the camshaft is loud, it may be the sound of timing gears. When auscultation with a stethoscope, stabilize the engine at a strong speed, and use a stethoscope to auscultate at the timing gear chamber cover and on the side of the camshaft.

There are two connection methods of piston pins

1. There are two connection methods of piston pins, namely full float and semi-float. Fully floating: At the normal operating temperature of the engine, the piston pin can be rotated in the connecting rod head hole and the piston pin seat hole, with little wear and good uniformity, so it is widely used.

2. There are two main connection methods of piston pins, one is full floating and the other is semi-floating.The full-floating piston pin can be rotated normally in the connecting rod piston, while the semi-floating piston pin can only be rotated in the piston.

3. There are two ways to connect the connecting rod head and the piston pin in the car engine, namely full-float and semi-float. Full floating: At the normal operating temperature of the engine, the piston pin can be rotated in the connecting rod head hole and the piston pin seat hole, with little wear and uniformity, which is widely used.

4. There are two ways to connect the piston pin and the piston pin seat hole, namely: full floating: under the normal operating temperature of the engine, the piston pin can rotate in the connecting rod small head hole and the piston pin seat hole, with little wear, uniform and widely used. In order to prevent the pin from scratching the cylinder wall, the two ends of the piston pin seat are fixed with a card ring.

5. In agricultural four-wheeled vehicles, there are two ways to connect the connecting rod head and the piston pin, namely full-floating and semi-floating.When the full-floating piston pin is working, it rotates in the small head hole of the connecting rod and the piston pin hole to ensure that the piston pin wears evenly along the circumference. In order to prevent the two ends of the piston pin from scratching the cylinder wall, the piston pin blocking ring is installed on the outside of the piston pin hole.

6. What are the two connection methods of the piston pin? The function of the piston pin is to connect the piston and the connecting rod, and transmit the force borne by the piston to the connecting rod or vice versa. The piston pin is a cylindrical pin installed in the piston skirt.

What is the reason for the abnormal sound of the engine piston pin?

The reasons for the abnormal sound of the engine piston pin are as follows: the piston pin and the small end bushing of the connecting rod are worn, and the gap is too large; the gap between the piston pin and the piston pin seat hole is large; the oil pressure is too low, the oil splash is insufficient, and the lubrication effect is poor;The piston pin lock ring falls off, so that the piston pin can move freely. The piston pin is broken.

The reasons for the abnormal sound of the engine pin are as follows: the piston pin and connecting rod small head bushing are worn, and the gap is too large; the gap between the piston pin and the piston pin seat hole is large; the oil pressure is low, the oil splash is insufficient, and the lubrication effect is poor; the piston pin lock ring falls off, so that the piston pin can move freely; the piston pin is broken.

The main reason for the abnormal sound of the piston pin is that the bushing of the piston pin and connecting rod is excessively worn, the chimeric is loose, and the chimeric deviation of the bushing and connecting rod is too large.

Possible causes of abnormal piston noise: (1) the piston pin and connecting rod head are worn, and the gap is too large; (2) the gap between the piston pin and the piston pin is large; (3) the oil pressure is low, the oil splash is insufficient, and the lubrication effect is poor; (4) the piston pin lock ring falls off, allowing the piston pin to move freely;(5) The piston pin is broken.

The reasons for the abnormal sound of the piston pin are: the piston pin and the connecting rod small head bushing are worn or the piston pin and the piston pin seat are loose, and the bushing and the connecting rod small head hole are gaps, etc.

The reasons for the abnormal sound of the piston pin are: the piston pin and the connecting rod small head bushing are worn; the piston pin and the piston pin seat are loose; the bushing and the connecting rod small head hole have a gap.