CN111299956A - An engine maintenance method - Google Patents

Abstract

The invention discloses an engine maintenance method, which is specifically implemented according to the following steps: step 1, use high-pressure water to flush the engine to remove impurities around the engine; step 2, release the residual oil of the engine internal reference; step 3, the first Boring, unifying the size of the engine cylinder hole by machining; Step 4, spraying, applying the coating to the engine cylinder hole; Step 5, milling the top surface, cleaning the surface of the empty top of the engine; Step 6, the second boring The cylindricity of the engine cylinder hole is corrected by machining; Step 7, honing, to restore the size and roughness of the engine cylinder hole. The invention provides an engine maintenance method, which repairs local vulnerable parts while cleaning the engine.

Description

An engine maintenance method

technical field

The invention belongs to the technical field of engine maintenance, and particularly relates to an engine maintenance method.

Background technique

An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, and the like. For example, internal combustion engines usually convert chemical energy into mechanical energy. The engine applies to both the power generating device and the entire machine including the power device (eg gasoline engine, aero engine). The engine was first born in the United Kingdom, so the concept of the engine is also derived from English, and its original meaning refers to the kind of "mechanical device that generates power".

The external combustion engine, which means that its fuel is burned outside the engine, was invented by R. Stirling of Scotland in 1816, so it is also called the Stirling engine. The engine converts the heat energy generated by this combustion into kinetic energy. Watt's improved steam engine is a typical external combustion engine. When a large amount of coal is burned to generate heat energy to heat water into a large amount of water vapor, high pressure is generated, and then this kind of The high pressure pushes the machine to do work, thus completing the conversion of thermal energy to kinetic energy.

The internal combustion engine is a reciprocating piston engine. The biggest difference between this type of engine and an external combustion engine is that its fuel is burned inside it. There are many types of internal combustion engines. Common gasoline engines and diesel engines are typical internal combustion engines.

Gas turbine, the working characteristic of this engine is to generate high-pressure gas by combustion, and use the high pressure of the gas to drive the blades of the gas turbine to rotate, thereby outputting power. Gas turbines are widely used, but because it is difficult to finely adjust the output power, gas turbines are rarely used in cars and motorcycles, and only some racing cars have used gas turbines.

A jet engine refers to an engine that directly generates reaction thrust by the airflow ejected at high speed from the nozzle. Widely used as a power plant for aircraft. The fuel and oxidant react chemically in the combustion chamber to release heat energy. Then the heat energy is converted into the function of adjusting the airflow in the nozzle. In addition to fuel, the oxidizer carried by the aircraft is called a rocket motor, including solid-fuel rocket motors and liquid-fuel rocket motors.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an engine maintenance method, which repairs local vulnerable parts while cleaning the engine.

The technical solution adopted in the present invention is, an engine maintenance method, which is specifically implemented according to the following steps:

Step 1. Rinse the engine with high-pressure water to remove impurities around the engine;

Step 2. Drain the residual oil from the engine internal reference;

Step 3. Boring for the first time, unify the cylinder hole size of the engine through machining;

Step 4, spray, and apply the coating to the cylinder bore of the engine;

Step 5. Mill the top surface and clean the surface of the empty top of the engine;

Step 6. Boring for the second time, correct the cylindricity of the engine cylinder hole by machining;

Step 7. Honing to restore the size and roughness of the engine cylinder bore.

The feature of the present invention also lies in:

The specific process of step 3 is as follows:

The boring tool is used for rough boring, and the size of the engine cylinder hole is unified.

The main declination angle of the boring tool is 45 to 75°.

The dimensional accuracy of boring is IT18～IT17; the surface roughness Ra is 1.6～0.8μm.

The specific process of step 6 is as follows:

The boring tool is used for static boring to correct the cylindricity of the engine cylinder bore.

The main declination angle of the boring tool is 60-70°.

The beneficial effects of the present invention are:

The engine maintenance method of the invention can prevent oil from spilling, save resources, avoid the entry of sand and gravel during oil filling, and also prevent dust from entering, and repairs local vulnerable parts while cleaning the engine, not only can clean the engine well , prolong its service life, at the same time, improve the performance of the engine, so that the engine can work better.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments.

An engine maintenance method of the present invention is specifically implemented according to the following steps:

Step 1. Rinse the engine with high-pressure water to remove impurities around the engine;

Step 2. Drain the residual oil from the engine internal reference;

Step 3. Boring for the first time, unify the cylinder hole size of the engine through machining;

The specific process of step 3 is as follows:

The boring tool is used for rough boring, and the size of the engine cylinder hole is unified.

Among them, the main declination angle of the boring tool is 45-75°.

The dimensional accuracy of boring is IT18～IT17; the surface roughness Ra is 1.6～0.8μm.

Step 4, spray, and apply the coating to the cylinder bore of the engine;

Step 5. Mill the top surface and clean the surface of the empty top of the engine;

Step 6. Boring for the second time, correct the cylindricity of the engine cylinder hole by machining;

The specific process of step 6 is as follows:

The boring tool is used for static boring to correct the cylindricity of the engine cylinder bore.

Among them, the main declination angle of the boring tool is 60-70°.

Step 7. Honing to restore the size and roughness of the engine cylinder bore.

Example 1

Step 1. Rinse the engine with high-pressure water to remove impurities around the engine;

Step 2. Drain the residual oil from the engine internal reference;

Step 3. Boring for the first time, unify the cylinder hole size of the engine through machining;

The specific process of step 3 is as follows:

The boring tool is used for rough boring, and the size of the engine cylinder hole is unified.

Among them, the main declination angle of the boring tool is 45°.

The dimensional accuracy of the boring hole is IT18; the surface roughness Ra is 1.6 μm.

Step 4, spray, and apply the coating to the cylinder bore of the engine;

Step 5. Mill the top surface and clean the surface of the empty top of the engine;

Step 6. Boring for the second time, correct the cylindricity of the engine cylinder hole by machining;

The specific process of step 6 is as follows:

The boring tool is used for static boring to correct the cylindricity of the engine cylinder bore.

Among them, the main declination angle of the boring tool is 60°.

Step 7. Honing to restore the size and roughness of the engine cylinder bore.

Example 2

Step 1. Rinse the engine with high-pressure water to remove impurities around the engine;

Step 2. Drain the residual oil from the engine internal reference;

Step 3. Boring for the first time, unify the cylinder hole size of the engine through machining;

The specific process of step 3 is as follows:

The boring tool is used for rough boring, and the size of the engine cylinder hole is unified.

Among them, the main declination angle of the boring tool is 75°.

The dimensional accuracy of the boring hole is IT17; the surface roughness Ra is 0.8 μm.

Step 4, spray, and apply the coating to the cylinder bore of the engine;

Step 5. Mill the top surface and clean the surface of the empty top of the engine;

Step 6. Boring for the second time, correct the cylindricity of the engine cylinder hole by machining;

The specific process of step 6 is as follows:

The boring tool is used for static boring to correct the cylindricity of the engine cylinder bore.

Among them, the main declination angle of the boring tool is 0°.

Step 7. Honing to restore the size and roughness of the engine cylinder bore.

Example 3

Step 1. Rinse the engine with high-pressure water to remove impurities around the engine;

Step 2. Drain the residual oil from the engine internal reference;

Step 3. Boring for the first time, unify the cylinder hole size of the engine through machining;

The specific process of step 3 is as follows:

The boring tool is used for rough boring, and the size of the engine cylinder hole is unified.

Among them, the main declination angle of the boring tool is 60°.

The dimensional accuracy of the boring hole is IT18; the surface roughness Ra is 1.2μm.

Step 4, spray, and apply the coating to the cylinder bore of the engine;

Step 5. Mill the top surface and clean the surface of the empty top of the engine;

Step 6. Boring for the second time, correct the cylindricity of the engine cylinder hole by machining;

The specific process of step 6 is as follows:

The boring tool is used for static boring to correct the cylindricity of the engine cylinder bore.

Among them, the main declination angle of the boring tool is 65°.

Step 7. Honing to restore the size and roughness of the engine cylinder bore.

The engine maintenance method of the invention can prevent oil from spilling, save resources, avoid the entry of sand and gravel during oil filling, and also prevent dust from entering, and repairs local vulnerable parts while cleaning the engine, not only can clean the engine well , prolong its service life, at the same time, improve the performance of the engine, so that the engine can work better.

Claims (6)

1. An engine maintenance method is characterized by being implemented according to the following steps:

step 1, washing an engine by using high-pressure water to remove impurities around the engine;

step 2, discharging residual oil of the internal parameters of the engine;

step 3, boring for the first time, wherein the size of the engine cylinder hole is unified through machining;

step 4, spraying, namely coating the coating into the cylinder hole of the engine;

step 5, milling a top surface, and performing surface cleaning on the empty top of the engine;

step 6, boring for the second time, wherein the cylindricity of the engine cylinder hole is corrected through machining;

and 7, honing, and recovering the size and the roughness of the engine cylinder hole.

2. The engine servicing method according to claim 1, wherein the step 3 is embodied as follows:

and carrying out rough boring by using a boring cutter, and unifying the sizes of the engine cylinder holes.

3. The engine maintenance method according to claim 2, wherein the boring tool main slip angle is 45 to 75 °.

4. The engine servicing method of claim 2, wherein the bore hole dimensional accuracy is IT 18-IT 17; the surface roughness Ra is 1.6-0.8 μm.

5. The engine servicing method according to claim 1, wherein the step 6 is embodied as follows:

and (4) performing static boring by using a boring cutter, and correcting the cylindricity of the engine cylinder hole.

6. The engine maintenance method according to claim 5, wherein the boring tool main slip angle is 60 to 70 °.