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What are the holes on the brake discs for?

1 Answers
EvangelineLynn
07/29/25 8:36pm
The main functions of the holes on brake discs: Grooves are made on the brake pads, and holes are drilled on the brake discs. These gaps and grooves increase airflow, enhance heat dissipation performance, and quickly remove dust generated by friction, significantly improving the brake pads' resistance to heat fade and making driving safer. Here are some braking techniques: 1. Emergency braking: Some vehicles are not equipped with ABS, so it is not recommended to press the brake pedal fully at once. Instead, press it twice in succession to prevent wheel lock-up, which could cause skidding and loss of steering control. 2. Braking in rainy conditions: When driving on wet roads, avoid slamming the brake pedal or turning the steering wheel abruptly. After passing through water, it's best to gently press the brake pedal twice to use inertia and friction to remove water from the brake discs, preventing brake failure during sudden stops. 3. Braking when following another vehicle: The main purpose of braking while following another car is to maintain a safe distance. Therefore, press the brake pedal gently. Besides observing the braking of the car in front, also pay attention to the movements of the vehicles ahead of it. If you notice the car in front braking, place your foot on the brake pedal in advance to prepare for sudden stops.
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Causes of Compressor Abnormal Noise?

If abnormal noise occurs from the compressor after turning on the air conditioning, it is usually caused by internal piston wear or valve plate damage; if the compressor makes abnormal noise without the air conditioning on, it is mostly due to damaged compressor bearings. Below are some introductions about the compressor: 1. The car air conditioning compressor is the heart of the car air conditioning refrigeration system, responsible for compressing and delivering refrigerant vapor. 2. Depending on the working principle, air conditioning compressors can be divided into fixed displacement compressors and variable displacement compressors. 3. Based on the working method, compressors can generally be categorized into reciprocating and rotary types, with common reciprocating compressors including crankshaft connecting rod type and axial piston type, and common rotary compressors including rotary vane type and scroll type.
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Does the car air conditioner use electricity or fuel?

Whether the car air conditioner uses electricity or fuel depends on different situations: fuel-powered cars use fuel when the air conditioner is on, while electric vehicles use electricity. The car air conditioning system adjusts and controls the temperature, humidity, air cleanliness, and air flow inside the car cabin to a better state, providing passengers with a comfortable riding environment, reducing travel fatigue, and creating good working conditions for the driver, which plays an important role in ensuring safe driving. The car air conditioner is mainly composed of components such as the compressor, electronically controlled clutch, condenser, evaporator, expansion valve, liquid storage dryer, pipelines, condenser fan, vacuum solenoid valve, idle speed controller, and control system.
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Why Does the Car Smell Like Burning When the Air Conditioner Is On?

Reasons for a burning smell when the car air conditioner is on: 1. Dust on the heating pipe is being baked when the electric auxiliary heating is used; 2. The air conditioner vents are blocked, preventing hot air from escaping; 3. Aging air conditioner wiring or abnormal heating wires causing excessively high temperatures. Solutions for a burning smell when the car air conditioner is on: 1. Turn off the electric auxiliary heating of the air conditioner; 2. Ask an air conditioner maintenance technician to disassemble the air conditioner and clean the dust on and around the heating pipe; 3. Check if the air conditioner vents are blocked. Car air conditioner maintenance tips: 1. Do not use the air conditioner immediately after starting the car; 2. Replace the air filter every 2,000 kilometers or once a year; 3. Do not run the air conditioner for too long.
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What Causes the Abnormal Noise When the Car Air Conditioner is On?

Reasons for abnormal noise when the car air conditioner is on: 1. There are debris in the blower fan blades, causing noise when the blades hit the debris during rotation; 2. The blower fan is faulty, with water ingress or lack of lubrication in the rotating shaft, leading to wear and abnormal noise. The car air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the vehicle. Common issues with car air conditioning usage: 1. After using the car air conditioner for a period, a musty or smoky odor may be noticed; 2. When the car air conditioner is cooling or heating, the air blown out from the vents may not be fresh, causing discomfort in the nasal cavity and trachea for passengers.
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What Does the Wrench Light Mean on a Cruze?

The appearance of a wrench symbol on the dashboard is a maintenance reminder signal, indicating that the vehicle is approaching or has exceeded the scheduled maintenance mileage. It is advisable to visit a 4S dealership for servicing as soon as possible. Here is some extended information: 1. Vehicle Maintenance: Vehicle maintenance refers to the preventive work of regularly inspecting, cleaning, replenishing, lubricating, adjusting, or replacing certain components of the vehicle, also known as vehicle servicing. Modern vehicle maintenance primarily includes the engine system, transmission system, air conditioning system, cooling system, fuel system, power steering system, etc. 2. Purpose of Vehicle Maintenance: The purpose of vehicle maintenance is to keep the vehicle clean and in good technical condition, eliminate potential hazards, prevent malfunctions, slow down the deterioration process, and extend the vehicle's service life.
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What is the reason for the Cruze's instrument cluster going black and failing to start when igniting?

The reason for the Cruze's instrument cluster going black and failing to start when igniting is due to insufficient battery power. Below is additional information on battery maintenance precautions: 1. Turn off electrical equipment before parking and turning off the engine: Leaving lights, audio, air conditioning, and other electrical devices on for extended periods after the car is turned off is very detrimental to the battery. 2. Avoid long-term vehicle inactivity: If the vehicle is not used for a long time, the battery's charge will gradually decrease, making it difficult to start the engine the next time you drive. 3. Regularly clean the battery: Periodically use a damp cloth to wipe the exterior of the battery, removing dust, oil stains, and other contaminants from the panel and positive/negative terminals that can cause leakage, preventing the accumulation of acid-corrosive powder.
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