What are the main contents of automobile engine testing?

The first step of the engine compartment inspection: after opening the engine cover, be sure to carefully check whether the wiring in the engine compartment is uniform, whether there are traces of disassembly of parts, and whether there are oil stains on the binding post. The second step of the inspection of the engine compartment:

Check whether the upper edge of the engine cover is flat, there are some veneer holes on the engine cover, be sure to check if there is deformation, if there is deformation, it must have been reshaped and painted. The third step of the inspection of the engine compartment: check whether the various screws are loose or missing, see whether the frame of each part is flat, and whether the interval between the gaps is even.

Note: The inspection of the engine compartment is a very important part of the whole new car inspection process. Because the engine compartment protects the most core parts of the car, if these parts are damaged, it will cause failure at least and safety hazards at worst.

And in the new car inspection precautions in many positions of the inspection is not only to see, it is best to touch with your hands, the eyes sometimes deceive us, only carefully touch with your hands, in order to feel whether it is really flat. Octave fish.

1. Automobile safety testing, referring to braking, steering, side skidding, vehicle speed and lighting (headlights.

Wait; 2. Work reliability detection, referring to abnormal noise, wear, deformation and crack detection;

3. Dynamic detection, which refers to the acceleration ability and chassis output power.

Engine power, torque and oil circuit working performance testing;

4. Economic fuel consumption;

5. Environmental protection testing refers to the detection of noise and exhaust emissions.

First of all, open the cover to check the external cleanliness of the engine, if there is a small amount of oil and dust is normal, secondly, the oil level, color, and cover should also be carefully checked.

Third, check the engine coolant, battery, and air filter.

The fourth is to ignite the engine and observe the color of the exhaust gas, if it is a translucent light gray draft, it means that the engine is in good condition, if the exhaust gas is black, it means that the engine is not well tuned. If there is an abnormal noise in the engine, such as a low "rumble" sound, the leather roll may be the bearing of the engine is broken.

General start-up test. Evaluate the general starting performance of the engine. Diesel engine idle test.

Evaluate the idle stability of the diesel engine. Gasoline engine idle test. Evaluate the idle stability and idle emissions of gasoline engines.

Power test. Evaluate the power and economy performance of the engine under full load.

Load characteristic test. At the specified speed, the economy of the partial load of the engine is evaluated.

Universal characteristic test. Evaluate the economy of the engine under various working conditions, and provide a basis for the selection of the engine for the car.

Diesel engine speed regulation characteristics test. Evaluate the stable regulation rate of the diesel engine.

Mechanical loss of power test. Evaluate the mechanical loss of power of the engine.

The working uniformity test of each cylinder. This test is carried out in order to improve the fuel economy of the engine, save energy, and reduce deflagration and exhaust pollution. Oil consumption test. Evaluate the oil consumption of the engine under specified operating conditions.

Check the engine, drive train and suspension device for abnormal sounds. Check whether there is leakage in the radiator and each connecting part. Check the oil level in the engine, transmission, rear axle and steering gear for leakage.

Check that lights, horns, gauges and signals, and wipers are working properly. Check whether the level of the battery electrolyte meets the standard (it should be flooded over the plate 10 15mm requirements.

Check the fastening of all parts of the car, especially the safety parts such as tendencies and brakes. Check whether the braking system (including the parking brake) and steering mechanism are working properly and reliably when starting to drive.

What does a car engine need to be checked on a regular basis? Hurry up and collect it, many whites don't know.

Rework workers generally only produce assembly line rework or run-in test rework.

The former is mainly responsible for some problems found in the assembly of the production process.

The latter is mainly responsible for some problems found in the engine after running-in or testing.

Conduct relevant tests on the air tightness, running-in and various performance indicators of the whole machine.

The inspection items of automobile engine include: external inspection of the engine: check whether the engine accessories are complete, whether the main accessories are damaged and missing, and whether there is leakage in the cylinder block, cylinder head, water pump, fuel system and oil seals of each part; Check the working condition of the starting scaffolding machine:

Start the engine, first listen to whether there is any abnormal noise, check whether there is oil leakage, water leakage and air leakage, and check the engine idling, medium speed, high speed and the working condition of each cylinder; Check the cylinder compression pressure: check whether the cylinder pressure meets the requirements, check the cylinder pressure, determine the wear degree of the cylinder and piston ring, as well as the sealing of the valve and seat, cylinder gasket, etc. Check the vacuum level of the intake manifold: Check the vacuum level of the engine intake manifold and the wear of the piston assembly.

About the inspection of the car engine, I still know a lot, first of all, when doing the engine inspection, you must first listen to whether there is any noise after the engine starts, but also to see whether the engine shakes the phenomenon, check the engine can also start from the throttle, disassemble the throttle to see if there is carbon deposit, if there is no carbon deposit, the engine intake system is not a problem, and then disassemble the ignition coil, if the ignition coil is in a normal ignition state, it is generally not broken, In this case, it is necessary to check the spark plug of the car engine, if the spark plug is accompanied by carbon deposits, we must replace the spark plug at this time, and the last check is the engine block, which requires professional tools to disassemble, and the engine block can be seen after the engine head is disassembled, if the cylinder volume carbon is not very serious, or the cylinder wear is not very serious, then it means that your engine condition is still very good. However, the above engine inspection should be carried out in a professional auto repair shop, and if the engine is dismantled by yourself, the gain outweighs the loss. <>

We can say that the engine is the heart of the car, and gasoline is the blood of the car, and the engine is also the most important part of the car, because the engine transmits power, so as to make the car run through the propeller shaft, and the current engine manufacturing technology is also very advanced, the engine life is long, and it is also very durable. And the internal structure of the engine is not very complicated, that is, the power is generated by the principle of the internal combustion engine. <>

I have to say that the rapid rise of China's economy, many people have their own car, and now the requirements for the car are getting higher and higher, whether it is from the appearance of the car or from the performance of the car to pursue flawless, but the car is a machine after all, the car also needs regular maintenance, as long as each of us in accordance with the car manufacturer's instructions to maintain, there is basically no big impact on the use of the car and the life problem. <>

All in all, the engine of the car is the most important part of the car, is the power output of the car components, if you are not a professional auto mechanic, then we check the working condition of the engine must go to a professional auto repair shop, but non-professionals can also judge the working condition of the car engine by watching and listening, once the engine is found to be abnormal, go to the auto repair shop in time to check.

It is necessary to listen to the sound of the engine running, but also to see the process of engine operation, pay attention to the vibration of the engine, pay attention to the surface condition of the engine, and check the running rate of the engine in time.

The first thing is to go to the 4S shop to check, and then it should be to change the lubricating oil, it should be to change the engine oil, and at the same time, you should also check the parts, you should also check the basic equipment, and you should also replace the brake pads in time.

Summary. Hello, in response to your question, what is the role of the test results of the automobile engine, the most important role is applied to the transaction of second-hand cars, this test result, on behalf of the current engine working conditions, whether there is oil leakage, water leakage, whether the acceleration performance is normal, whether there is abnormal noise. Leakage.

The fault light is lit, which is the second-hand car transaction when buying needs to be detected and judged, otherwise the purchase of a vehicle with an abnormal engine, the later maintenance cost will be very high, I hope my can help you.

What is the role of the results of the car engine test.

Hello, don't worry, I can ask for your question, but wait a minute, I need text for about 2 minutes.

Hello, in response to your question, what is the role of the test results of the automobile engine, the most important role is applied to the transaction of second-hand cars, this test result, on behalf of the current engine working conditions, whether there is oil leakage, water leakage, whether the acceleration performance is normal, whether there is abnormal noise. Leakage. The fault light is lit, which is the second-hand car transaction when buying needs to be detected and judged, otherwise the purchase of a vehicle with an abnormal engine, the later maintenance cost will be very high, I hope my can help you.

There are many aspects to check the engine, the mechanical part and the electronic control part.