What does the EPC displayed on the car dashboard mean?

Are there any speed requirements for night driving?

Passenger vehicles must not exceed 80% of the daytime speed limit when driving at night. Regulations for motor vehicles driving on roads: Do not exceed the speed indicated by speed limit signs or markings; On roads with two or more motor vehicle lanes in the same direction and without speed limit signs or markings, the maximum speed on urban roads is 70 km/h. The maximum speed on closed motor vehicle-only roads and highways is 80 km/h. Precautions for driving speed on urban roads: Speeding within 10% of the prescribed speed limit will not result in a fine but will incur 3 demerit points. Speeding between 10% and 20% of the prescribed speed limit will result in a fine and 3 demerit points. Speeding over 70% of the prescribed speed limit will result in a fine, 6 demerit points, and may also lead to the revocation of the driver's license.

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What does the engine symbol appearing on a car mean?

The engine symbol appearing on a car is the engine fault light. The reasons for the engine fault light to illuminate are as follows: Exhaust emissions not meeting standards: Poor fuel quality, failure of the three-way catalytic converter, excessive carbon buildup in the intake pipe, clogged fuel injectors, failure of the oxygen sensor, occasional engine misfires, etc., can all cause the engine fault light to illuminate. Among these, poor fuel quality is the most common cause. Poor engine performance: The fault light may illuminate due to poor performance of the engine system. Issues such as throttle pedal sensor failure, throttle position sensor failure, air flow meter failure, crankshaft position sensor failure, or poor line contact can all cause the engine fault light to illuminate.

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Do motorcycles have fuel injectors?

Motorcycles have fuel injectors. Each cylinder is equipped with one fuel injector and one spark plug. Definition of fuel injector: The fuel injectors used in modern cars are essentially simple solenoid valves. When the solenoid coil is energized, it generates a magnetic force that lifts the needle valve, opening the injection port. Fuel is then sprayed at high speed through the annular gap between the needle valve head and the injection port, forming a mist that facilitates complete combustion. Working principle of fuel injector: A fuel injector is a normally closed valve (a normally closed valve remains closed when there is no control signal input, whereas a normally open valve remains open when there is no control signal input). The opening and closing of the valve is controlled by the up and down movement of a needle valve.

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What is the Impact of New Energy Vehicles on the Traditional Auto Repair Industry?

The rapid development of new energy vehicles is bound to threaten the traditional fuel vehicle industry and its supply chain. These impacts will directly affect the engine and transmission manufacturing industries, posing certain challenges to these sectors. The structure of pure electric vehicles is significantly simpler than that of traditional fuel-powered vehicles. Definition of New Energy Vehicles: New energy vehicles refer to automobiles that use unconventional vehicle fuels as power sources (or conventional vehicle fuels with new onboard power devices), integrating advanced technologies in vehicle power control and drive systems to form vehicles with advanced technical principles, new technologies, and innovative structures. Types of New Energy Vehicles: New energy vehicles include four major types: hybrid electric vehicles (HEV), battery electric vehicles (BEV, including solar-powered vehicles), fuel cell electric vehicles (FCEV), and other new energy vehicles (such as those using supercapacitors, flywheels, and other high-efficiency energy storage devices). Unconventional vehicle fuels refer to fuels other than gasoline and diesel.

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What is the function of the engine radiator?

The car radiator, also known as the heat exchanger, is a key component in the automobile cooling system. As an essential part of a water-cooled engine's heat dissipation circuit, the radiator absorbs heat from the engine block. Radiator working principle: The radiator is a vital component of water-cooled engines, serving as a major element in the engine's heat dissipation circuit. It absorbs heat from the engine block to prevent overheating. Due to water's high specific heat capacity, its temperature doesn't rise significantly after absorbing engine heat. The engine's thermal energy is transferred through the liquid cooling circuit using water as the heat transfer medium, then dissipated through large-area cooling fins via convection to maintain optimal engine operating temperature. Method for checking pipe blockage: Fill the radiator with water and secure the cap. Start the engine. Pinch the return hose halfway with one hand while revving the engine with the other. If the hose shows suction when engine speed increases, the radiator is functioning properly. Otherwise, it indicates blockage. This method also works for testing the water pump when the radiator is in good condition.

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How Many Years Can Putty and Paint Last?

Generally, putty and paint can last for 2 to 3 years. Automotive Painting Process: After metal sheet repair is completed, it is handed over to the painting department for pre-painting treatment, which takes two to five hours. Before painting, the repair area must be thoroughly cleaned, an evaluation of the work process is conducted, and non-repair areas are masked off. There are 12 steps in the treatment process, and if the primer is damaged, rust-proofing treatment is also required. Starting the Painting: Painting also involves several steps, briefly summarized as: rust-proof paint, body filler, first coat primer, mid-coat primer, and topcoat. Completing these steps takes 2-4 hours, with the most critical step being color matching, making the entire process quite complex. Paint Surface Treatment: Removing pinholes and achieving a mirror finish. This is commonly referred to as grinding, polishing, and waxing, which also takes 2-3 hours to complete.

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What does the EPC displayed on the car dashboard mean?

Are there any speed requirements for night driving?

What does the engine symbol appearing on a car mean?

Do motorcycles have fuel injectors?

What is the Impact of New Energy Vehicles on the Traditional Auto Repair Industry?

What is the function of the engine radiator?

How Many Years Can Putty and Paint Last?

Should You Shift to Neutral or Keep Your Foot on the Brake at a Red Light?

Can I use 92 octane unleaded gasoline if the requirement is '92 octane or above'?

What Causes Unstable Idle Speed When Starting the Engine?

What is the damage of sudden braking to a CVT transmission?