What does DVVT engine mean?

Do New Cars Need Three-Way Catalytic Cleaner?

Generally, new cars do not require the addition of three-way catalytic cleaner because they usually do not have carbon deposits, so the exhaust pipe will not become clogged. Composition of the Three-Way Catalytic Converter: The three-way catalytic converter typically consists of four parts: the shell, vibration damping layer, substrate, and catalyst coating. Shell: Made of stainless steel to prevent oxidation scale from falling off, which could block the substrate. Vibration Damping Layer: Composed of gaskets or wire mesh pads, it serves to seal, insulate, and secure the substrate. To protect the substrate from damage caused by vibration, thermal deformation, and other factors, the gasket is made of expanded mica and aluminum silicate fibers, bonded together with adhesive. Substrate: Made of honeycomb-shaped ceramic materials, though many are also made of metal (including stainless steel). Catalyst: Composed of precious metals such as platinum, rhodium, and palladium, sprayed onto the substrate to form the purifying agent. Lifespan of the Three-Way Catalytic Converter: The lifespan of a three-way catalytic converter is generally between 80,000 to 100,000 kilometers. The exact lifespan depends on the vehicle's usage conditions, as well as the quality of fuel used and the driving environment.

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What Causes Motorcycle Oil Pipe Leakage?

Motorcycle oil pipe leakage may be due to the carburetor's waste oil pipe leaking. Reasons for motorcycle oil pipe leakage: The waste oil pipe of the carburetor, if clogged with impurities inside the carburetor, will cause the overflowing oil to flow into the cylinder through the valve if not drained, then enter the engine oil, thus affecting the engine, and overflow from the air filter side. The overflow pipe below the carburetor is also common in scooter assist vehicles and gear-shifting motorcycles. Its structure is a drain pipe with an opening slightly higher than the oil level. Function of the carburetor: In case the carburetor's oil valve does not close tightly, fuel continuously flows into the carburetor, and the excess fuel with a high oil level flows out through this thin pipe. The downside is that if the carburetor's oil valve does not close tightly while driving, fuel will continuously overflow and drip along the way, potentially causing a fire. The carburetor may also take in water or dirty fuel with impurities. In such cases, loosening the drain bolt below the carburetor allows the accumulated water and impurities at the bottom of the fuel to be discharged.

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When to Use High Beams While Driving?

High beams should be used when driving on roads without streetlights or under poor lighting conditions. Below are specific scenarios for using high beams: 1. Poor Lighting: High beams can be used on roads with no streetlights or inadequate lighting. However, switch to low beams when encountering other vehicles or pedestrians to avoid dazzling them. 2. Overtaking: When overtaking another vehicle, the driver should first turn on the left turn signal, then switch between high and low beams or honk the horn to alert the vehicle ahead to yield. 3. Tunnels: Turn on high beams when entering a tunnel, but switch to low beams in advance when meeting oncoming vehicles. 4. Intersections and Curves: When approaching corners, curves, or unsignalized intersections, switching between high and low beams can serve as a warning.

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Can I Take the Subject 2 Driving Test During National Day?

National Day is not available for the Subject 2 driving test. Reasons why the test cannot be taken during National Day: The Subject 2 driving test cannot be taken during National Day because it is a statutory holiday designated by the state, which is a special holiday period. During this time, staff at the vehicle management office are on leave. Generally, driving license tests are scheduled on regular working days, i.e., from Monday to Friday. Tests are not available on weekends and state-designated holidays, but you can make an appointment online to take the test on a working day. Introduction to Subject 2: Subject 2, also known as the small road test, is part of the motor vehicle driver's license assessment and is the abbreviation for the field driving skill test. For small cars (C1 and C2), the test items include five mandatory components: reverse parking, parallel parking, stopping and starting on a slope, right-angle turns, and curve driving.

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Will Small Hailstones Cause Dents on a Car?

Hailstones can not only dent a car but also potentially damage the windshield. Therefore, it is essential to take protective measures. Additional information: 1. Hail prevention: Park the car in a garage or indoor parking lot; use a car hail protection cover; cover the car with a quilt to prevent hail damage, as the elasticity of the quilt can cushion some of the impact force of the hailstones, acting like a protective layer for the car. 2. Preparation: Before hail occurs, check the weather forecast and prepare in advance by covering the car with a car cover or a specialized hail protection cover. If unprepared, using a blanket or mattress can also help. 3. Response measures: If caught driving during a sudden hailstorm, immediately drive to an underground parking garage or find a safe place to stop the car. When driving in hail, remember not to drive too fast, as accelerating increases the impact force between the hailstones and the car's surface, potentially causing more damage.

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What Causes Stalling on a Slope?

Stalling on a slope is primarily caused by poor clutch control or insufficient vehicle power. Here are the detailed explanations: 1. Clutch; Stalling occurs due to improper clutch usage, while rolling back is due to incorrect brake application. Rolling back after releasing the brake happens when the clutch isn't released enough, and the vehicle lacks power—releasing the brake at this point causes rolling back. Stalling occurs when the clutch is released too quickly. 2. Throttle: Failing to apply the throttle promptly, mistiming the release of the handbrake, or poor coordination between the throttle and clutch can lead to rolling back. Panic braking or lifting the clutch abruptly after rolling back can also cause stalling.

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What does DVVT engine mean?

Do New Cars Need Three-Way Catalytic Cleaner?

What Causes Motorcycle Oil Pipe Leakage?

When to Use High Beams While Driving?

Can I Take the Subject 2 Driving Test During National Day?

Will Small Hailstones Cause Dents on a Car?

What Causes Stalling on a Slope?

What is the power of the Dayang electric four-wheel vehicle charger?

Do commercial vehicles require a lottery for license plates?

Why Does the New Car's Shock Absorber Make Noise?

Are Motorcycle Oil Caps Universal?