What are the reasons why the Changan Oshan X7 won't start?

What does 2.0xl mean?

In car models, XL indicates that the vehicle belongs to the luxury version. Other code knowledge extensions are as follows: 1. XE refers to the comfort version sedan. 2. XL refers to the luxury version sedan. 3. XV refers to the super luxury version vehicle. 4. XVNAVI is XV-NAVI, which refers to the super luxury version vehicle with a navigation system. Knowledge extension about the letter T is as follows: 1. T stands for turbocharging, indicating that the vehicle is equipped with a turbocharged engine. 2. A turbocharger is essentially an air compressor that increases air intake by compressing air. 3. It utilizes the inertial impulse of exhaust gases from the engine to drive the turbine in the turbine chamber, which in turn drives the coaxial impeller. The impeller compresses the air delivered through the air filter pipeline, pressurizing it into the cylinders. 4. As the engine speed increases, the exhaust gas discharge speed and turbine speed also increase synchronously, allowing the impeller to compress more air into the cylinders. The increased air pressure and density enable the combustion of more fuel, and correspondingly increasing the fuel quantity can enhance the engine's output power.

19

4

Share

What is the function of an intercooler?

The function of an automotive intercooler is to reduce the intake air temperature of the engine. The intercooler is essentially a supporting component for turbocharging, and its role is to improve the engine's air exchange efficiency. Specific details are as follows: 1. The exhaust gas emitted by the engine is at a very high temperature, and the heat conduction through the turbocharger increases the intake air temperature. During the compression process, the air density increases, but this also causes the temperature of the air discharged by the turbocharger to rise with the increase in pressure, leading to a decrease in oxygen density, which affects the engine's effective charging efficiency. 2. If the turbocharged air enters the combustion chamber without cooling, it not only affects the engine's charging efficiency but also easily leads to excessively high combustion temperatures, causing issues such as knocking. Additionally, it increases the NOx content in the engine's exhaust, contributing to air pollution. 3. Reduces the engine's fuel consumption. 4. Enhances adaptability to high altitudes. In high-altitude areas, using an intercooler allows for a higher pressure ratio compressor, which enables the engine to generate more power and improves the vehicle's adaptability. 5. Improves turbocharger matching and adaptability.

3

2

Share

How does an ECU work?

It performs calculations, processing, and judgments on the information input from the air flow meter and various sensors based on the programs and data stored in its memory. Then, it outputs commands to provide the fuel injector with electrical pulse signals of a certain width to control the fuel injection volume. The ECU consists of a microcomputer, input, output, and control circuits. Below is an introduction to the ECU: 1. The ECU, or Electronic Control Unit, is also known as the "vehicle computer" or "on-board computer." In terms of its purpose, it is a specialized microcomputer controller for automobiles. The operating voltage range of an ECU is generally 6.5-16V, the operating current is 0.015-0.1A, and the operating temperature ranges from -40°C to 80°C. It can withstand vibrations below 1000Hz, so the probability of ECU failure is very low. 2. In the ECU, the CPU is the core component, which has the function of calculation and control. When the engine is running, it collects signals from various sensors for calculation and converts the results into control signals to manage the operation of controlled objects.

10

2

Share

What is the fuel consumption of the ATS-L?

The official combined fuel consumption of the Cadillac ATS-L is 7.8L/100km. However, the actual fuel consumption may vary slightly depending on individual driving habits and techniques. A smoother driving style generally results in lower fuel consumption, while aggressive driving habits such as frequent high-revving maneuvers, overtaking, etc., may lead to increased fuel consumption. Here are some methods to reduce fuel consumption: 1. Check the air conditioning system in summer: Air conditioning malfunctions are a significant cause of high fuel consumption. If the cooling effect is poor, the system may increase fan speed and lower temperature settings to achieve a cooler interior. 2. Reduce frequent hard braking: Frequent hard braking is a primary reason for high fuel consumption. While ensuring safe driving, make full use of the vehicle's inertia. 3. Avoid excessive air conditioning use in small-displacement vehicles: For vehicles parked under direct sunlight, avoid turning on the air conditioning immediately upon entering. First, open the windows and set the fan to a higher speed without activating the air conditioning to expel hot air. After the vehicle has cooled down moderately, then turn on the air conditioning.

19

3

Share

How to Obtain a New Energy Vehicle License Plate in Shanghai?

Here is the relevant information about obtaining a new energy vehicle license plate in Shanghai: 1. For those with a Shanghai residence permit and insurance: Consumers holding a "Shanghai Residence Permit" who meet the standard points requirement will see their social insurance requirement reduced from 12 consecutive months of payment within 24 months to 6 consecutive months within 12 months. 2. For residents from Hong Kong, Macao, Taiwan, overseas Chinese, and foreigners: Eligibility is no longer determined by the length of residence but by whether they have continuously paid social insurance for 6 months. Additionally, they must not have a new energy vehicle registered in Shanghai under their name, have a good personal credit record, and have a fixed charging station. Meeting these conditions allows them to enjoy the benefit of a Shanghai license plate for new energy vehicles, just like a local Shanghai resident.

13

0

Share

What Causes Severe Car Vibration?

Car vibration can be caused by the following reasons: 1. Excessive carbon deposits. 2. Fuel supply system failure. 3. Aging engine mounts. 4. Misfiring or cylinder failure. Detailed explanations are as follows: 1. Excessive carbon deposits: Severe carbon buildup in the engine cylinders can lead to clogged spark plugs or valves, directly causing the car to vibrate at idle. If the vehicle's acceleration performance has significantly declined and the vibration persists, an engine cylinder cleaning may be necessary. 2. Fuel supply system failure: Unstable fuel pressure can cause fluctuations in the air-fuel mixture concentration, resulting not only in vibration but also unstable idling. First, consider replacing the fuel filter, as prolonged use may clog it. Then, check the fuel pressure bypassing the fuel filter; if abnormal, the issue may lie with the fuel pump. 3. Aging engine mounts: This is a very common cause of vibration. If the engine vibration worsens over time without a corresponding loss of power, the engine mounts may be the culprit. 4. Misfiring or cylinder failure: This is the most common cause of engine vibration, typically due to issues with the ignition coil or spark plugs. If the ignition coil malfunctions or the spark plug fails to fire for any reason, the car will experience vibration.

14

1

Share

What are the reasons why the Changan Oshan X7 won't start?

What does 2.0xl mean?

What is the function of an intercooler?

How does an ECU work?

What is the fuel consumption of the ATS-L?

How to Obtain a New Energy Vehicle License Plate in Shanghai?

What Causes Severe Car Vibration?

Why Does a Diesel Engine Shake at Idle?

Which switch is used for windshield defogging?

Does a manual transmission need gearbox oil change?

What does lightly pressing the brake pedal mean?