Why does the car air conditioner not cool when parked but cools when running?

What is the function of the rear bumper light?

The function of the rear bumper light is to provide signals to the vehicles behind during driving, such as brake lights, fog lights, width test lights, reverse lights, turn signals, hazard lights, etc. Introduction to the rear bumper light: The rear bumper light is also called a side light. On certain models, the bumper light is commonly referred to as a fog light, which varies depending on the vehicle model. If the rear bumper light is a fog light, there is usually only one. On some models, the lights on the bumper are purely decorative and do not have bulbs, but they still serve a reflective function. The function of the rear bumper light: Fog lights are installed on the front and rear of a car to illuminate the road and alert vehicles in front and behind to maintain distance during rainy or foggy weather. "When driving in fog, the first choice must be to turn on the fog lights." The visibility range of vehicle headlights is generally only 30 to 50 meters, while the visibility range of fog lights can reach about 100 meters.

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How to Determine if a Tire is Punctured or Just Flat?

Check whether the sidewall and inner edge of the tire are damaged. The extent of damage to the tire sidewall can be directly observed, with severe cases showing cracks or bulges. Damage to the inner edge of the tire can only be inspected after removing the tire. Below is an introduction to tire air leakage: 1. Overview: Driving with underinflated tires is the root cause of blowouts. When a vehicle is driven with insufficient air pressure (tire pressure below the standard level), the friction between the tire and the ground increases exponentially, causing a sharp rise in tire temperature, softening of the tire, and a significant drop in strength. Under these conditions, high-speed driving may lead to a tire blowout. 2. Hidden Dangers: Even at low speeds, driving with underinflated tires can damage them, with a long latency period and high concealment, posing greater hazards and laying the groundwork for future blowouts during high-speed driving. 3. Causes: If the tire is punctured by a nail or other sharp object without immediate rupture, it may start leaking air, eventually leading to a blowout.

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What is the voltage of a household sedan?

Typically, the battery voltage of a gasoline-powered household sedan ranges between 11.8V and 12.8V under normal conditions, primarily used for starting the engine. Working principle of the battery: Car batteries, also known as storage batteries, are a type of battery that converts chemical energy into electrical energy. Generally, the term 'battery' refers to lead-acid batteries. These are mainly composed of lead and its oxides, with sulfuric acid solution serving as the electrolyte. Car battery precautions: Frequent short-distance driving with frequent stops and starts can cause the car battery to remain undercharged for extended periods, shortening its lifespan. Driving at a steady speed on the highway for 20 to 30 minutes allows sufficient time for the battery to recharge. To save gasoline, an external charger can be used to supplement the battery's charge.

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Which Light Allows a Left Turn?

When making a left turn, check if there is a left-turn sign (such as on the road or next to the traffic signal). Under normal circumstances, if there is a left-turn sign, you can proceed after the green light turns on. Motor vehicle signal lights indicate: When the green light is on, vehicles are permitted to proceed, but turning vehicles must not obstruct the passage of straight-moving vehicles or pedestrians; when the yellow light is on, vehicles that have already crossed the stop line may continue; when the red light is on, vehicles are prohibited from proceeding. Precautions for left turns at intersections: First, check for oncoming traffic. If there is oncoming traffic, stop or proceed slowly to yield. Then, focus on your intended direction, steer the wheel to make the left turn. Observe the situation in the first lane (outermost lane) on the left. If conditions permit or after yielding to vehicles in the first lane, engage the clutch halfway to slowly move into the first lane. Then, observe the second lane and perform the same maneuver to occupy it. Simultaneously, glance to check for vehicles approaching from the right. During this process, maintain a slow speed.

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What is the percentage of vehicle purchase tax for cars?

Vehicle purchase tax is levied at 10% of the vehicle price. Below are the specific details about vehicle purchase tax: 1. Calculation method: Vehicle purchase tax is calculated based on the ad valorem rate method. The formula is: Tax payable = Taxable price × Tax rate. If a consumer purchases a domestic private vehicle, the taxable price is the total payment made to the dealer, including additional fees, but excluding the VAT (tax rate of 17%). Since the purchase price in the special sales invoice for motor vehicles already includes VAT, the 17% VAT must first be deducted when calculating the vehicle purchase tax, i.e., Taxable price for vehicle purchase tax = Invoice price ÷ 1.17, and then the vehicle purchase tax is calculated at a 10% rate. 2. Documents required for tax declaration: When filing a tax declaration, taxpayers should truthfully fill out the 'Vehicle Purchase Tax Declaration Form' and provide the following original documents and copies. The copies and the 'Unified Motor Vehicle Sales Invoice' tax filing copy will be retained by the tax authorities, while other original documents will be returned to the taxpayer after review by the tax authorities.

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Are Motorcycle Carburetors Interchangeable?

No, the size of the internal jets differs, which can cause excessive abnormalities in the carburetor during mid to high speeds. A carburetor is a mechanical device that mixes a certain proportion of gasoline with air under the vacuum generated by the engine. It continuously supplies filtered gasoline and clean fresh air, preparing a specific quantity and concentration of combustible mixture according to the various requirements of the engine. Introduction to Carburetors: A carburetor is a mechanical device that mixes a certain proportion of gasoline with air under the vacuum generated by the engine. As a precision mechanical device, it utilizes the kinetic energy of the incoming air stream to atomize the gasoline. Its crucial role in the engine can be likened to the "heart" of the engine. Classification of Carburetors: Carburetors are divided into simple carburetors and complex carburetors. They can also be categorized as downdraft and sidedraft carburetors. Based on the throttle type, carburetors are further classified into rotary and slide types. A rotary throttle consists of a disc-shaped throttle valve that rotates around an axis between the carburetor throat and the intake pipe, altering the cross-sectional area of the intake passage.

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Why does the car air conditioner not cool when parked but cools when running?

What is the function of the rear bumper light?

How to Determine if a Tire is Punctured or Just Flat?

What is the voltage of a household sedan?

Which Light Allows a Left Turn?

What is the percentage of vehicle purchase tax for cars?

Are Motorcycle Carburetors Interchangeable?

What is the reason for the thermostat not opening?

How to Learn Traffic Laws to Reduce Points?

Can fog lights only be turned on in foggy weather?

Is it better to ventilate a new car during the day or at night?