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What is the braking principle of a sedan?

1 Answers
MacLouis
07/29/25 9:35pm
The braking principle of a car is as follows: 1. Principle one: The general working principle of the braking system is to use the mutual friction between the non-rotating components connected to the body or frame and the rotating components connected to the wheels or drive shaft to prevent the rotation or tendency of rotation of the wheels. 2. Principle two: When the braking system is not in operation, there is a gap between the shoe and drum, allowing the wheels and brake drum to rotate freely. 3. Principle three: During braking, to decelerate the car, stepping on the brake pedal pushes the master cylinder piston through the push rod, causing the master cylinder fluid to flow into the wheel cylinder under a certain pressure. This action pushes the two wheel cylinder pistons to rotate the brake shoes around the support pins, causing their upper ends to separate and press the friction linings against the inner surface of the brake drum.
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What are the driving tips for automatic transmission cars?

Driving tips for automatic transmission cars: 1. Engage P gear only after the car is completely stopped: After the car enters the parking position, hold the brake, shift the gear lever to N gear, pull up the handbrake, release the foot brake, then turn off the engine, and finally push the gear lever into P gear; 2. Shift into driving gear: When starting the car to move, only after stepping on the brake pedal can the gear lever be moved out of P gear or N gear and shifted into driving gear; 3. Use N gear to start: After starting the vehicle, you can first turn on the power, hold the brake, push the gear to N, then ignite, and then shift into D gear to move forward directly; 4. Do not coast in N gear while driving: Because the automatic transmission needs lubrication, when the gear is placed in N while driving, the oil pump cannot supply oil normally for lubrication, which will cause the temperature of the internal parts of the transmission to rise and result in complete damage.
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What engines are equipped in the Mercedes-Benz C-Class?

The Mercedes-Benz C-Class is equipped with a total of three engines: a low-power version of the 1.5-liter turbocharged engine, a high-power version of the 1.5-liter turbocharged engine, and a 2.0-liter turbocharged engine. The low-power version of the 1.5-liter turbocharged engine has a maximum power of 115 kW, a maximum torque of 250 Nm, a maximum power speed of 5,700 rpm, and a maximum torque speed ranging from 1,500 to 4,000 rpm. The high-power version of the 1.5-liter turbocharged engine has a maximum power of 135 kW, a maximum torque of 280 Nm, a maximum power speed of 6,100 rpm, and a maximum torque speed ranging from 3,000 to 4,000 rpm. The 2.0-liter turbocharged engine has a maximum power of 190 kW, a maximum torque of 370 Nm, a maximum power speed of 6,100 rpm, and a maximum torque speed ranging from 1,800 to 4,000 rpm.
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Is it still necessary to affix the annual inspection sticker for vehicle inspection?

It is no longer necessary to affix the annual inspection sticker for vehicle inspection. Starting from June 2020, the nationwide implementation of electronic annual inspection labels began. Now, when vehicle owners go for their annual vehicle inspection, they will not receive a paper annual inspection label upon passing the inspection. Instead, vehicle owners can directly obtain the electronic annual inspection label on the Traffic Management 12123 platform. Here is some additional information: 1. Required documents for annual inspection: Vehicle license; Compulsory traffic insurance certificate; Vehicle and vessel tax payment or tax exemption certificate (usually purchased together with compulsory traffic insurance and can be found in the compulsory traffic insurance policy); Owner's ID card. If someone else is handling the inspection on behalf of the owner, the representative must bring their ID card. 2. Annual inspection items: The inspection mainly includes vehicle testing, safety testing, exhaust emission testing, etc. Newly added items now include appearance inspection, OBD inspection, fuel evaporation testing, and adjustments to pollutant emission limits.
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How Often Should the Brake Fluid in a Sagitar Be Replaced?

Sagitar brake fluid should be replaced every two years or 40,000 kilometers. Below is relevant information about brake fluid: 1. Introduction to Brake Fluid: Brake fluid is made from refined diesel distillate with thickeners and antioxidants added. 2. Checking the Moisture Content in Brake Fluid: Brake fluid has a certain level of corrosiveness and strong water absorption. A dedicated brake fluid tester can be used to check the moisture content in the brake fluid to determine if replacement is needed. You can also observe the color of the brake fluid; if it appears black, it likely needs replacement. 3. Brake Fluid Should Not Be Mixed: Note that different types and brands of brake fluid should not be mixed. Due to differing formulations, mixing brake fluids can reduce their performance indicators.
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Where is the gear shift on a Mercedes-Benz?

On a Mercedes-Benz, the gear shift is located on the steering column below the steering wheel, as Mercedes-Benz uses a column shifter. The gear arrangement is the same as that of a conventional automatic transmission: pulling upwards sequentially engages N (Neutral) and R (Reverse), while pushing downwards engages D (Drive). Pressing the P button activates the parking gear. The electronic gear shift can only be operated when the key is in position 2 or when the vehicle is started. There are two types of gear shifts in Mercedes-Benz vehicles: 1. The non-electronic gear shift functions similarly to conventional ones, though the shifting path is more complex to use. 2. The electronic gear shift is positioned where the windshield wiper switch is typically located in regular cars. Pulling upwards sequentially engages N (Neutral) and R (Reverse), pushing downwards engages D (Drive), and pressing the P button activates the parking gear. The electronic gear shift can only be operated when the key is in position 2 or when the vehicle is started.
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Why Does Volvo Depreciate So Much?

Because Volvo uses significant price reductions to achieve better sales. Here is relevant information about Volvo: 1. Background: In 1927, the first Volvo car was introduced and mass-produced. As Volvo's sales continued to improve, by 1935, Volvo separated from SKF and became an independent automotive group. Before 1998, Volvo Cars not only produced passenger vehicles but also expanded into aerospace and various industrial equipment manufacturing. In 1998, Ford Motor Company acquired Volvo Cars' business, including the ownership of the Volvo brand. In 2010, China's Geely Group purchased Volvo Cars' business and brand ownership from Ford. 2. Safety: Volvo's safety has always been widely recognized as outstanding. Among its entire brand lineup, the XC90 is particularly renowned as the safest car in the world. In the most stringent IIHS crash tests in the U.S., the XC90 consistently achieves top-tier ratings every year, continuously setting new records for itself.
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