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What effect does valve noise have on a motorcycle engine?

1 Answers
FrankRose
07/29/25 1:15pm
Valve noise does not have any substantial impact on the engine, but it can increase the engine's noise level. Here are the details: 1. Causes of valve noise: Valve noise occurs due to excessive clearance between the camshaft and the valve tappet, which is caused by wear and tear. Engines that have been in use for a long time will inevitably produce some valve noise. 2. Engine protection: To reduce engine wear, it is crucial to change the engine oil regularly during routine vehicle use. Engine oil is often referred to as the lifeblood of the engine. Inside the engine, oil not only lubricates but also performs functions such as cleaning, sealing, cushioning, rust prevention, and heat dissipation. Without engine oil, the engine cannot operate normally.
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What is the general size of a transmission?

Each vehicle model has transmissions of varying sizes, with differences between manual and automatic transmissions, as well as between imported and domestically produced ones. The displacement also affects the size. A CVT transmission is approximately 80 cm wide, 1.3 cm thick (including the drivetrain), and one meter high. Definition of transmission: A device that changes the speed ratio and direction of motion. Used in automobiles, tractors, ships, machine tools, and various machines to alter the torque, speed, and direction of motion transmitted from the driving shaft to the driven shaft under different working conditions. A gear-driven transmission generally consists of a housing and several gear pairs. Function of the transmission: While driving, to adapt to different conditions, the vehicle's driving force and speed need to vary within a certain range. Since existing engines cannot meet this requirement in terms of torque and speed variation range, a transmission is installed.
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What are the technical challenges of new energy vehicles?

New energy vehicles face the following technical challenges: Battery aspects: Extreme condition simulations pose safety hazards to testers, such as overvoltage, overcurrent, and overtemperature, which may lead to battery explosions. SOC estimation algorithm verification is time-consuming, with actual battery pack charge-discharge tests taking a week or even longer. Testing condition difficulties: Simulating specific conditions is challenging, such as creating slight SOC differences between battery cells during balancing function tests, or creating minor temperature variations between individual cells and battery packs during thermal balance tests. Electronic control system: Unlike general automotive electronic control systems, the MCU (Motor Control Unit) is special in that it requires high control frequency and very high input signal frequency. Typically, the sampling frequency needs to be over 1000 times the signal frequency, and the signal simulation output frequency needs to be over 100 times the signal frequency.
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How to switch the display on the Lavida's central LCD screen?

The wiper control lever has a button at the end that can be pressed up and down. There is a dot button at the bottom in the middle of the control lever. Pressing up or down can display various information. Below is relevant information: 1. Exterior: The Lavida's dimensions are 4670mm × 1806mm × 1474mm, with a wheelbase of 2688mm. The 2021 model retains smooth and full side lines, with a waistline below the windows running from the front to the rear. The upward-sloping design, combined with the overall lower front and higher rear body, creates a strong sense of forward motion. The side mirrors integrate turn signals and are paired with 16-inch multi-spoke wheels. 2. Interior: It features a traditional dual-round mechanical instrument cluster combined with a trip computer. The three-spoke flat-bottom multifunction steering wheel is wrapped in soft material, offering a full grip, and is accented with glossy black trim and silver decorative strips in the middle.
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How to reset the tire pressure on the Roewe 360?

Roewe 360 tire pressure reset method: Operate the buttons on the multifunction steering wheel to store the tire pressure status through the tire pressure option in the multifunction menu; There is a tire pressure reset switch on the side of the gear lever. With the ignition switch turned on, press and hold this switch button until you hear a beep, indicating the reset is complete. Tire pressure refers to the air pressure inside the tires. In terms of car maintenance, the engine is the heart of the car - engine damage will lead to the end of the car's lifespan, while tire pressure is the blood pressure of the car. The level of tire pressure plays a crucial role in the performance and power of the vehicle. The Roewe 360 is a car launched by SAIC, with body dimensions of 4579mm in length, 1804mm in width, 1490mm in height, and a wheelbase of 2660mm.
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What is the reason for the Volkswagen CC's fan not stopping after turning off the engine?

The reason the radiator fan continues to run after the car is turned off is to protect the engine and prevent the car from catching fire. Protecting the engine: If the engine coolant temperature at the moment of parking is higher than the acceptable soaking temperature for the engine, the car's computer will automatically calculate the fan's operating speed and duration, thereby controlling the fan's operation. The higher the engine temperature, the longer the fan runs after parking; when the engine coolant temperature drops below the soaking temperature, the fan turns off. This protects the engine and extends its service life. Preventing car fires: In ordinary cars, the cooling system stops working after the engine is turned off, often causing the engine temperature to rise further after shutdown, leading to damage. Therefore, modern high-end cars are equipped with an automatic cooling function. The radiator's power is directly connected to the battery, so even after the engine is turned off, if the temperature remains high, the radiator fan continues to operate for a while until the temperature cools down before stopping, to avoid high temperatures causing the car to catch fire.
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What is the engine model of the 2021 Audi A5?

The engine model of the 2021 Audi A5 is the 3.0-TDI-V6 engine, equipped with an electric compressor (EPC) and mild hybrid technology (MHEV). Carbon deposit issues: Carbon deposits here include cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits, etc. These areas are closely related to the engine's power output. When there is excessive carbon buildup inside the engine, the vehicle's ignition energy decreases, intake efficiency drops, ultimately leading to reduced engine power, resulting in sluggish acceleration and muffled engine sounds. Fuel system issues: Using an incompatible fuel octane rating can lead to decreased vehicle output power and reduced performance. Alternatively, if the fuel tank cap vent is blocked, or if components such as the fuel tank switch, fuel filter, or the fuel line between the tank and the carburetor are partially obstructed, the required fuel supply cannot be met, resulting in an overly lean air-fuel mixture and weak engine acceleration.
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