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List of the catalog of this article:

• 1, The phenomenon and causes and solutions of engine knocking
2, Are there many reasons why the engine knocks on the cylinder?
• 3、What is the reason for the cylinder of the car engine
• 4, What is the reason for the cylinder of the gasoline engine

The phenomenon, causes and solutions of engine cylinder knocking

Second, poor working environment, such as low oil pressure, oil viscosity does not meet the working requirements, connecting rod deformation, etc.Third, indirect reasons such as unstable combustion, such as the combustion of combustible mixed gas is too fast, which produces high pressure, which can easily cause the piston skirt to hit the cylinder wall and make abnormal noises.

The cause of engine cylinder knocking. The gap between the piston and the cylinder wall is too large. Poor lubrication of the cylinder wall.

The main reasons for the engine cylinder burst are as follows: (1) If this phenomenon only occurs after the cold car starts. When the normal water temperature is reached, it disappears by itself, because the gap between the piston and the cylinder wall is too large, and the piston shrinks when the car is cold, which further increases the gap between the two, resulting in an obvious knocking sound.

Causes and treatment of engine cylinder knocking: - The reason for the failure of hot cylinder knocking is that the connecting rod shaft neck is not parallel to the spindle neck, the connecting rod bushing is axially skewed, etc. The piston gap is too small, the elliptical or inverse ellipse is too small, the piston is too tight, the piston is deformed, the piston ring end gap and back gap are too small, and the piston ring is stuck.

After understanding the causes of piston cylinder knocking, let's analyze the causes and detection methods of several common piston knocking cylinder faults. 1. After the engine starts cold, the piston knocks on the cylinder. The abnormal sound is serious, and the noise is reduced after the hot car. The reason for this phenomenon is that the piston gap is too large or the piston is deformed.

Are there many reasons why the engine knocks on the cylinder?

1. The reason why the electric injection engine knocks on the cylinder can be summarized into the following three points: the oil supply time is too early. When the piston of the diesel engine moves upwards, the fuel injector has begun to inject oil, causing the fuel to burn in advance, resulting in the high-pressure gas in the cylinder to hit the piston, emitting a rhythmic "click, click" crisp knock. The sound of hitting the cylinder.

2. There are many reasons for knocking the cylinder. In a simple summary, there are several possibilities: x0dx0ax0dx0a The gap between the piston and the cylinder block is too large, and when the piston moves to the vertex, it is affected by the horizontal force of the tilt of the connecting rod, resulting in knocking the left and right cylinder.

3. Engine "explosion" refers to the vibration caused by excessive gap between the cylinder and the piston. Most of the impact of the engine piston on the cylinder is caused by excessive wear and excessive clearance between the piston and the cylinder.

4. Common reasons for the piston knocking the cylinder (1) The gap between the piston and the cylinder is too large. Due to improper repair, the gap between the piston and the cylinder is large, or the gap is too large due to serious wear of the cylinder.

5. [What is the reason for the explosion of the engine cylinder? The reason why the car engine knocks on the cylinder] The reason for the engine explosion: the octane number of the selected gasoline is too low, and the octane number of domestic gasoline is mostly lower than the standard.

6. The phenomenon of knocking on the cylinder: Knocking on the cylinder is a phenomenon in which the metal knocking sound occurs when the pressure in the cylinder is too high. Reason: Due to combustion, a sharp metal knock near the upper stop point is claimed to be a combustion knock cylinder or a hot knock cylinder.

What is the reason for the car engine knocking the cylinder

There are many reasons for knocking the cylinder. In a simple summary, there are several possibilities: the gap between the piston and the cylinder block is too large, and when the piston moves to the vertex, it is affected by the horizontal force of the tilt of the connecting rod, resulting in the left and right knocking of the cylinder.

Most of the engine piston knocking on the cylinder is caused by excessive wear and excessive gap between the piston and the cylinder.

The main reason why the engine knocks on the cylinder is that there is a lot of carbon in the engine. The engine lubrication condition is poor. The engine connecting rod is bent or distorted. The speed is fast and the pressure in the cylinder is high.

The engine intake channel that has not been cleaned for a long time will lead to the generation of carbon accumulation. If there is too much carbon accumulation, it will cause the engine compression ratio response to become higher, which will lead to explosion, causing the cylinder and spark plug failure. When one of the four spark plugs has poor ignition, it will cause a knock on the cylinder, so the spark plug should be replaced in time.

Common reasons for piston knocking cylinder (1) The gap between the piston and the cylinder is too large. Due to improper repair, the gap between the piston and the cylinder is large, or the gap is too large due to serious wear of the cylinder.

[What is the cause of the engine cylinder explosion? The reason why the car engine knocks on the cylinder] The reason for the engine explosion: the octane number of the selected gasoline is too low, and the octane number of domestic gasoline is mostly lower than the standard.

What is the reason for the knocking cylinder of the gasoline engine

The problem of the knocking cylinder of the gasoline engine involves many reasons, including the crank connecting rod mechanism, the explosion of the combustion cylinder and the explosion of the mechanical cylinder.

There are many reasons for knocking the cylinder. There are several possibilities in a simple summary: piston and cylinder block gap.If it is too large, when the piston moves to the vertex, it is affected by the horizontal force of the inclined connecting rod, resulting in the left and right knocking of the cylinder.

The main reason why the engine knocks on the cylinder is that there is a lot of carbon in the engine. The engine lubrication condition is poor. The engine connecting rod is bent or distorted. The speed is fast and the pressure in the cylinder is high.

The most common reason for the engine cylinder knocking is the excessive gap between the cylinder and the piston due to the wear of the piston ring or the cylinder, or the gap caused by the wear of the piston pin.

The octane number of gasoline is wrong. If your car is marked with 95 oil but you add 92 oil, then the label is insufficient, and the octane number will also be insufficient, resulting in a knocking cylinder and explosion. Carbon accumulates in the cylinder combustion chamber.