The items of automobile inspection include appearance inspection, exhaust gas detection, film transmittance, violation inspection, and safety inspection, including horn, brake, axle weight, chassis, ignition system, lighting system, exhaust system, license plate installation and other all-round inspections.
Automobile motor vehicle inspection project: Usually, we divide automobile inspection into wholeThere are three major parts: vehicle inspection, engine inspection and chassis and body inspection. Usually, we divide automobile inspection into three major parts: vehicle inspection, engine inspection and chassis and body inspection: technical condition of the cooling system. B. Technical status of the oil supply system; c.
Engine system: Check the state of the engine, sensors, spark plugs, etc. to ensure the normal operation of the engine. Chassis system: Check the chassis system of the vehicle, including suspension, braking, steering and tires, to ensure its normal operation and safety.
Instrumentation and equipment diagnosis method: The instrument and equipment diagnosis method obtains the information parameters of automobile performance and faults through instruments and equipment without disassembling automobile components, and compares them with the normal technical condition of automobiles to draw diagnostic conclusions of technical performance and faults.
Manual experience diagnosis: Before the 1950s, the structure of automobiles was relatively simple and there were fewer electrical equipment, and the fault diagnosis could be completed according to manual experience. At present, the manual experience diagnostic method is still very effective in the diagnosis of some complex faults.
The test light method uses a car light bulb as a test light to check whether there is an open circuit failure in the circuit.Instrument method Observe the indications of ammeter, water temperature meter, fuel gauge, oil pressure gauge, etc. Put it on the dashboard of the car and judge whether the circuit is faulty.
The preparation for motor vehicle road test is a static inspection, that is, checking oil, cooling water, brake pedal, clutch pedal, steering disc and its free stroke, tire pressure Wait, when the road test is ready, the car can be started.
Hello! There are many ways to test used cars. Here are some common methods: static inspection: the contents of the inspection are factory time, mileage, engine, appearance, door, beam, interior, trunk and chassis.
FirstStep Inspection of brake pedal Inspection part: brake pedal Inspection process: open the door and enter the cab Step 2 Inspection of engine operation and acceleration Inspection part: engine Inspection process: step on the acceleration pedal steadily, observe the engine status and speed change.
The specific dynamic detection steps are: Step 1: Check the brake pedal; Step 2: Check the engine operation and acceleration; Step 3: Check the gearbox; Step 4: Check the chassis transmission system; Step 5: Check the steering part of the vehicle; Step 6: Whether the driving is biased; Step 7: Driving system Dynamic inspection.
Engine no-load condition inspection Check the startability of the engine. Start the engine to see if it is easy to start and whether the starter works well. Generally, the start should not exceed 3 times.No more than 10s each start-up. No-load working condition inspection.
Methods: There are three main types: static inspection, dynamic inspection and instrument inspection.
At present, the results of the collision test mainly record the data of sensors installed on obstacles (that is, the "wall" mentioned by the poster, but generally not the wall), cars, collision dummy, etc., and judge the acceleration, deformation displacement, force and other data according to the data, so as to evaluate the collision safety of a car. Can.
The recent "Passat" collision test incident of China Insurance Research Institute suddenly attracted everyone's attention.In terms of car body safety, consumers' attention to the safety of car body structure has increased to an unprecedented level. But here's the problem. In fact, many consumers don't know what the body structure is, so let me explain it to you next.
The main reason why sedans are popular in China is that some people think that sedans are safer than sedans. The reason is that compared with sedans, hatchbacks have fewer independent trunks. If they are rear-tailed, there is less cushioning trunk cushions, and rear passengers are easy to be injured. After all, the tail is so short, slightly It was gone as soon as it hit.
Except for the appearance, there is basically no difference. However, many friends have different views on its collision safety. Most of them think that if the rear end of the car is longer, it will be safer to tail. According to the domestic crash test, the rear of the car has not been tested.
In the past, the famous ncap did not have rear-end collision tests, but some other vehicle safety institutions conducted rear-end collision tests, such as IIHS, which are usually stricter. And now ncap has also joined the tail-end collision test. What he said on the first floor was wrong.
The easiest way to accelerate the test is to set a benchmark of a certain distance in advance in the test interval and use a stopwand measure the passing time of the car. The actual acceleration test is to measure the acceleration performance of the overtake vehicle under various conditions and circumstances, and find the distance and time required to overtake the vehicle according to the acceleration test curve.
The detection method makes the car in poor road conditionsAfter driving 10km on the road, stop the car and touch the shock absorber shell with your hand. If it is not hot enough, it means that there is no resistance inside the shock absorber and the shock absorber does not work.
The method of testing the acceleration performance is very simple. Press the acceleration, test, initial speed and final speed buttons on the instrument, and the empty car passes through the 100m section at a uniform speed of 20km/h and reaches the starting point of the acceleration test section.
2 Line drawing method: On the polished valve working surface, draw a line with a soft pencil every 8mm or so, and then put the matching valve on the valve seat and rotate it 1/4 time. If the drawn lines are all cut, it means that the sealing is good; if the lines are not cut, it means that the sealing is poor and needs to be re-grinded.
Use the fifth wheel gauge to record the whole process of the initial speed and acceleration of the car. The test is carried out once each, and the road section of the round-trip acceleration test should coincide.Starting continuous gear shift acceleration performance test: 1. On the test road, select the appropriate length section as the acceleration performance test section.
D Let's look at the situation I have at present (commercial vehicles). Strictly according to the theory, the major components of the whole vehicle, such as the engine, front axle, transmission, rear axle, etc., are first tested on the parts bench. Of course, the electrical appliances also need to be tested on the bench. Focus on the road test of the whole vehicle, because I am engaged in this work.
"Collision Test" can most intuitively drive which car or which model is safer, but this kind of test is actually meaningless. .
First, look at the scope of application of the test. If it is a global model, whether it is the most stringent IIHS or the domestic C-NCAP, it is a reference for us, but as a safety comparison, we should still choose the strict one.
Car collision test is really useful, because in the process of collision, he will collect the size of the force and the difference in materials to test. After the test, the degree of damage of the material is detected. If the hardness of the material or other properties do not meet the standard, its hardness and performance will be increased in the following test material.
*
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The items of automobile inspection include appearance inspection, exhaust gas detection, film transmittance, violation inspection, and safety inspection, including horn, brake, axle weight, chassis, ignition system, lighting system, exhaust system, license plate installation and other all-round inspections.
Automobile motor vehicle inspection project: Usually, we divide automobile inspection into wholeThere are three major parts: vehicle inspection, engine inspection and chassis and body inspection. Usually, we divide automobile inspection into three major parts: vehicle inspection, engine inspection and chassis and body inspection: technical condition of the cooling system. B. Technical status of the oil supply system; c.
Engine system: Check the state of the engine, sensors, spark plugs, etc. to ensure the normal operation of the engine. Chassis system: Check the chassis system of the vehicle, including suspension, braking, steering and tires, to ensure its normal operation and safety.
Instrumentation and equipment diagnosis method: The instrument and equipment diagnosis method obtains the information parameters of automobile performance and faults through instruments and equipment without disassembling automobile components, and compares them with the normal technical condition of automobiles to draw diagnostic conclusions of technical performance and faults.
Manual experience diagnosis: Before the 1950s, the structure of automobiles was relatively simple and there were fewer electrical equipment, and the fault diagnosis could be completed according to manual experience. At present, the manual experience diagnostic method is still very effective in the diagnosis of some complex faults.
The test light method uses a car light bulb as a test light to check whether there is an open circuit failure in the circuit.Instrument method Observe the indications of ammeter, water temperature meter, fuel gauge, oil pressure gauge, etc. Put it on the dashboard of the car and judge whether the circuit is faulty.
The preparation for motor vehicle road test is a static inspection, that is, checking oil, cooling water, brake pedal, clutch pedal, steering disc and its free stroke, tire pressure Wait, when the road test is ready, the car can be started.
Hello! There are many ways to test used cars. Here are some common methods: static inspection: the contents of the inspection are factory time, mileage, engine, appearance, door, beam, interior, trunk and chassis.
FirstStep Inspection of brake pedal Inspection part: brake pedal Inspection process: open the door and enter the cab Step 2 Inspection of engine operation and acceleration Inspection part: engine Inspection process: step on the acceleration pedal steadily, observe the engine status and speed change.
The specific dynamic detection steps are: Step 1: Check the brake pedal; Step 2: Check the engine operation and acceleration; Step 3: Check the gearbox; Step 4: Check the chassis transmission system; Step 5: Check the steering part of the vehicle; Step 6: Whether the driving is biased; Step 7: Driving system Dynamic inspection.
Engine no-load condition inspection Check the startability of the engine. Start the engine to see if it is easy to start and whether the starter works well. Generally, the start should not exceed 3 times.No more than 10s each start-up. No-load working condition inspection.
Methods: There are three main types: static inspection, dynamic inspection and instrument inspection.
At present, the results of the collision test mainly record the data of sensors installed on obstacles (that is, the "wall" mentioned by the poster, but generally not the wall), cars, collision dummy, etc., and judge the acceleration, deformation displacement, force and other data according to the data, so as to evaluate the collision safety of a car. Can.
The recent "Passat" collision test incident of China Insurance Research Institute suddenly attracted everyone's attention.In terms of car body safety, consumers' attention to the safety of car body structure has increased to an unprecedented level. But here's the problem. In fact, many consumers don't know what the body structure is, so let me explain it to you next.
The main reason why sedans are popular in China is that some people think that sedans are safer than sedans. The reason is that compared with sedans, hatchbacks have fewer independent trunks. If they are rear-tailed, there is less cushioning trunk cushions, and rear passengers are easy to be injured. After all, the tail is so short, slightly It was gone as soon as it hit.
Except for the appearance, there is basically no difference. However, many friends have different views on its collision safety. Most of them think that if the rear end of the car is longer, it will be safer to tail. According to the domestic crash test, the rear of the car has not been tested.
In the past, the famous ncap did not have rear-end collision tests, but some other vehicle safety institutions conducted rear-end collision tests, such as IIHS, which are usually stricter. And now ncap has also joined the tail-end collision test. What he said on the first floor was wrong.
The easiest way to accelerate the test is to set a benchmark of a certain distance in advance in the test interval and use a stopwand measure the passing time of the car. The actual acceleration test is to measure the acceleration performance of the overtake vehicle under various conditions and circumstances, and find the distance and time required to overtake the vehicle according to the acceleration test curve.
The detection method makes the car in poor road conditionsAfter driving 10km on the road, stop the car and touch the shock absorber shell with your hand. If it is not hot enough, it means that there is no resistance inside the shock absorber and the shock absorber does not work.
The method of testing the acceleration performance is very simple. Press the acceleration, test, initial speed and final speed buttons on the instrument, and the empty car passes through the 100m section at a uniform speed of 20km/h and reaches the starting point of the acceleration test section.
2 Line drawing method: On the polished valve working surface, draw a line with a soft pencil every 8mm or so, and then put the matching valve on the valve seat and rotate it 1/4 time. If the drawn lines are all cut, it means that the sealing is good; if the lines are not cut, it means that the sealing is poor and needs to be re-grinded.
Use the fifth wheel gauge to record the whole process of the initial speed and acceleration of the car. The test is carried out once each, and the road section of the round-trip acceleration test should coincide.Starting continuous gear shift acceleration performance test: 1. On the test road, select the appropriate length section as the acceleration performance test section.
D Let's look at the situation I have at present (commercial vehicles). Strictly according to the theory, the major components of the whole vehicle, such as the engine, front axle, transmission, rear axle, etc., are first tested on the parts bench. Of course, the electrical appliances also need to be tested on the bench. Focus on the road test of the whole vehicle, because I am engaged in this work.
"Collision Test" can most intuitively drive which car or which model is safer, but this kind of test is actually meaningless. .
First, look at the scope of application of the test. If it is a global model, whether it is the most stringent IIHS or the domestic C-NCAP, it is a reference for us, but as a safety comparison, we should still choose the strict one.
Car collision test is really useful, because in the process of collision, he will collect the size of the force and the difference in materials to test. After the test, the degree of damage of the material is detected. If the hardness of the material or other properties do not meet the standard, its hardness and performance will be increased in the following test material.
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