Should I use D gear or S gear for highway driving?

Why doesn't the Haval H9 use part-time four-wheel drive?

Part-time four-wheel drive saves fuel and easily meets environmental standards, while full-time four-wheel drive consumes more fuel. The specific reasons why the Haval H9 does not use part-time four-wheel drive are as follows: Domestic brands have not yet mastered the technology of full-time four-wheel drive: Genuine full-time four-wheel drive systems are commonly found in Mercedes-Benz and Toyota's Torsen, Mitsubishi's Super Select also has full-time four-wheel drive functionality, as well as Land Rover and Patrol's multi-plate clutch with mechanical lock. Mechanical part-time four-wheel drive is reliable but lacks terrain mode selection, which doesn't appear high-end in the eyes of Chinese consumers, so many manufacturers have adopted TOD. Part-time four-wheel drive: It is a type of four-wheel drive system in vehicles, allowing the driver to switch between two-wheel drive and four-wheel drive modes by engaging or disengaging the transfer case based on road conditions. This enables free conversion between two-wheel and four-wheel drive. Part-time four-wheel drive typically uses only front or rear wheels for driving but can switch to four-wheel drive on snowy or gravel roads, also known as selectable four-wheel drive. This is the most common drive mode for off-road vehicles or four-wheel-drive SUVs.

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The Difference Between Engine Oil and Transmission Fluid

The difference between engine oil and transmission fluid lies in their viscosity and lubricity. Under normal driving conditions, the temperature of transmission fluid is typically below 135°C, while engine oil generally operates below 50°C. Below are the functions of engine oil and transmission fluid: 1. Engine Oil: Also known as engine lubricant (English name: Engine-oil), with a density of approximately 0.91×10³ (kg/m³), it serves to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. It is often referred to as the 'blood' of a car. Engine oil consists of base oil and additives. The base oil is the primary component of lubricating oil, determining its fundamental properties, while additives compensate for and enhance the performance shortcomings of the base oil, imparting new characteristics, making them an essential part of lubricating oil. 2. Transmission Fluid: This is a lubricant used to keep the gear system clean, ensuring the proper functioning of the transmission and extending the lifespan of the transmission components.

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What's the reason why a 24-volt gasoline generator won't start?

24-volt gasoline generator fails to start due to excessive carbon buildup in the vehicle's engine causing ignition difficulties. Below is an analysis of other reasons why the engine won't start: 1. Battery lifespan expired: The vehicle battery is either dead or damaged, or it may have deteriorated from prolonged parking. Battery discharge could result from leaving the headlights on for extended periods with the ignition switch turned on without starting the vehicle, or continuous use of high-power audio and other power-intensive entertainment systems. 2. Component failure: Ignition system malfunction, poor connection in the low-voltage circuit, or leakage in the high-voltage wires can all cause this issue. Starter motor aging failure, meaning the vehicle's extended service life leads to gradual starter motor deterioration, resulting in weak starting or failure to ignite.

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What Causes the Ticking Sound When Accelerating Uphill?

When accelerating uphill, the engine produces a ticking sound for the following reasons: 1. Valves: The valve train in the engine includes valves, which normally produce a slight ticking sound during operation. However, if the valve noise is louder, it may indicate insufficient engine oil, causing inadequate lubrication of the valves and resulting in increased noise. 2. High-pressure fuel pump: Many engines use direct fuel injection technology, which requires higher injection pressure. Engines with direct injection technology have a high-pressure fuel pump in the engine compartment. This high-pressure fuel pump generates a ticking sound during operation, which is normal.

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Can I Replace the Ugly Photo on My Driver's License?

Yes, you can replace it by applying for a lost license replacement or by claiming that your driver's license is damaged to update it with a better photo. The permitted vehicle types and their corresponding codes on a driver's license are as follows: 1. Large passenger vehicles: A1 license allows driving large passenger vehicles and A3, B1, B2, C1, C2, C3, C4, M. 2. Tractor trailers: A2 license permits driving heavy and medium-sized full trailers, semi-trailer combinations, and B1, B2, C1, C2, C3, C4, M. 3. City buses: A3 license allows driving city buses with a capacity of 10 or more passengers and C1, C2, C3, C4. 4. Medium-sized passenger vehicles: B1 license permits driving medium-sized passenger vehicles (including city buses with a capacity of 10 to 19 passengers) and C1, C2, C3, C4, M. 5. Large trucks: B2 license allows driving heavy and medium-sized trucks; large, heavy, and medium-sized special-purpose vehicles and C1, C2, C3, C4, M. 6. Small cars: C1 license permits driving small and mini passenger vehicles, as well as light and mini trucks, light, small, and mini special-purpose vehicles and C2, C3, C4.

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What is the situation when the battery has power but the entire vehicle has no power?

Loose battery group plugs, broken internal battery connection wires, short circuits in the wiring, blown fuses, or the vehicle's power-off switch not being turned on can all cause the battery to have power but the entire vehicle to have no electricity. Related information: The red terminal of the battery is the positive pole, and the black one is the negative pole. The batteries are connected in series inside the battery box, meaning the positive pole of one battery is connected to the negative pole of another battery. Following this connection method, there will eventually be one positive and one negative lead wire left, which should be connected to the battery discharge port. Pay attention to the correct correspondence, generally left positive and right negative. Be cautious to avoid short circuits when connecting the batteries. If water enters the battery in a short time, it will not affect the battery's performance, as water is a weak electrolyte with very low conductivity. However, it must be wiped dry immediately; otherwise, the terminals may oxidize, causing them to fall off and damage the battery.

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Should I use D gear or S gear for highway driving?

Why doesn't the Haval H9 use part-time four-wheel drive?

The Difference Between Engine Oil and Transmission Fluid

What's the reason why a 24-volt gasoline generator won't start?

What Causes the Ticking Sound When Accelerating Uphill?

Can I Replace the Ugly Photo on My Driver's License?

What is the situation when the battery has power but the entire vehicle has no power?

What does 'panic' mean on a Mercedes key?

Should I Use 92 or 95 Octane Gasoline?

What does a cumulative score of 5 points on a driver's license mean?

Is the new Bora front-wheel drive or rear-wheel drive?