What is the braking distance of a car at 40 km/h?

Is the brake on the left or the right?

In an automatic transmission vehicle, the brake is on the left and the accelerator is on the right. Whether it's a manual or automatic transmission, the only difference underfoot is the presence or absence of a clutch. In an automatic transmission, there is no clutch on the left side, so the left foot remains idle. Automatic transmission vehicles typically use a hydraulic transmission device to replace the mechanical clutch in manual transmission vehicles, hence there is no clutch pedal. When the engine speed is low, the torque transmitted by the fluid is limited and insufficient to propel the vehicle forward. The reasons for unusual noises when braking in an automatic transmission vehicle are as follows: 1. Normal ABS activation: The ABS operation process is actually a cycle of locking-releasing-locking-releasing, keeping the vehicle in a state of near-lock rolling. Therefore, when the ABS is triggered by hard braking, it produces a clicking sound, which is normal. In this case, simply press the brake pedal firmly to the floor. 2. Gear noise when braking in an automatic transmission vehicle: If you hear a clicking sound between the transmission and the gear lever when pressing the brake pedal, the main reason for this noise may be the electronic linkage between the brake system and the automatic transmission. Pressing the brake activates the transmission solenoid valve, producing the clicking sound. This serves as a safety reminder, requiring the gear lever lock button to be pressed before shifting gears.

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What Precious Metals Can Be Extracted from a Car's Catalytic Converter?

The catalytic converter can extract platinum group metals. A car's catalytic converter contains many precious metals. The catalytic converter is used to purify exhaust gases, and this component is installed at the front section of the exhaust pipe. If a car has two front sections of the exhaust pipe, it may have two or even more catalytic converters. Without a catalytic converter, the toxic and harmful substances in the car's exhaust would exceed the standard, polluting the environment. The catalytic converter has an oxygen sensor at both the front and rear. The front oxygen sensor is called the upstream oxygen sensor, while the rear one is called the downstream oxygen sensor. The main function of the upstream oxygen sensor is to detect the oxygen content in the exhaust. The sensor can feed this data back to the ECU, which then adjusts the air-fuel ratio accordingly. The air-fuel ratio is a crucial parameter for the engine. The downstream oxygen sensor primarily checks whether the catalytic converter has failed. If the data fed back to the ECU by both sensors is the same, it indicates that the catalytic converter has failed. Upon failure, a warning light will illuminate on the car's dashboard to alert the driver. Meaning of ECU: ECU (Electronic Control Unit), also known as the "vehicle computer" or "onboard computer," is a specialized microcomputer controller for automobiles. Like a regular computer, it consists of a microprocessor (CPU), memory (ROM, RAM), input/output interfaces (I/O), analog-to-digital converters (A/D), and other large-scale integrated circuits for shaping and driving. In simple terms, "the ECU is the brain of the car." After the catalytic converter fails: If the temperature is too high, the catalytic converter cannot function at normal temperatures. Its catalyst must be heated to a certain temperature to gain oxidation or reduction capabilities. Typically, the catalytic converter's light-off temperature is 250-350°C, and its normal operating temperature is 400-800°C. Chronic poisoning: The catalyst is highly sensitive to elements like sulfur, lead, phosphorus, and zinc. Sulfur and lead come from gasoline, while phosphorus and zinc come from lubricating oil. These four substances and their oxide particles formed during engine combustion easily adsorb onto the catalyst's surface, preventing it from contacting exhaust gases and thus losing its catalytic function—a phenomenon known as "poisoning." Carbon buildup: When the car operates at low temperatures for extended periods, the catalytic converter cannot activate, and soot from the engine exhaust adheres to the catalyst's surface, blocking contact with CO and HC. Over time, the carrier's pores become clogged, reducing its conversion efficiency. Exhaust deterioration: The catalytic converter has a limited capacity for pollutant conversion. Therefore, built-in purification technology must minimize the original exhaust pollutants. If the concentration and total amount of exhaust pollutants are too high—such as when the air-fuel mixture is too rich—it can impair the catalytic converter's conversion ability and efficiency. Oxygen transmission failure: To achieve optimal exhaust catalytic efficiency (over 90%), an oxygen sensor must be installed in the engine's exhaust pipe for closed-loop control. The oxygen sensor measures the oxygen concentration in the exhaust, converts it into an electrical signal, and sends it to the ECU, thereby keeping the engine's air-fuel ratio within a narrow, near-ideal range.

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How to Connect Mobile Navigation in a Civic?

First, turn on the Bluetooth in the car and also enable the Bluetooth on your phone. Similar to connecting Bluetooth between two phones, simply turn on Bluetooth to start searching for Bluetooth devices. After finding the corresponding Bluetooth device, click to pair. You can use your phone to search for the car's Bluetooth and then proceed with pairing the Bluetooth devices. After locating the Bluetooth device, pairing requires entering a password. Once the password is entered and pairing is successfully displayed, you can start using it.

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How to Deal with Oxidized Car Rearview Mirrors?

Prepare mineral materials with strong adsorption capabilities such as volcanic mud and alkaline earth, which have excellent deep-cleaning properties. Use cleaning items like scouring pads and cloths along with water to thoroughly wipe them clean. Utilize a polishing machine with professional fine wax for polishing treatment, aiming to achieve the maximum polishing rate and quickly remove the damaged layer caused by grinding. After polishing, wipe clean and immediately apply polishing wax with a cotton swab to the polished area, followed by immediate waxing to make the paint surface as shiny as a mirror.

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How to Deal with Car Paint Scratches?

Using toothpaste to repair car paint scratches is one of the most cost-effective methods, and it seems to work well in terms of reducing the appearance of scratches. However, toothpaste can only lessen the visibility of the scratches. Nail polish generally has a mediocre repair effect. It merely adds a transparent coating over the scratch, making it less noticeable visually, but it doesn’t provide any real repair. The touch-up paint pen repair process is a bit more complicated, but it can handle larger and deeper scratches. A paste-like repair agent similar to toothpaste also functions like toothpaste, but it can only repair minor scratches.

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How to Adjust the Car's Air Conditioning for Hot Air?

First, press the brake pedal to start the engine. Then, turn the key to the ST position to start the engine until the idle speed stabilizes. Next, rotate the fan speed knob. Turn the temperature mode knob to the left to activate the cooling mode. Turn the temperature mode knob to the right to activate the heating mode. Press the A/C switch to turn on the compressor. Press the recirculation button to activate the internal circulation mode. To adjust the fan speed, click the fan blade icon on the air conditioning panel for up and down adjustments.

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What is the braking distance of a car at 40 km/h?

Is the brake on the left or the right?

What Precious Metals Can Be Extracted from a Car's Catalytic Converter?

How to Connect Mobile Navigation in a Civic?

How to Deal with Oxidized Car Rearview Mirrors?

How to Deal with Car Paint Scratches?

How to Adjust the Car's Air Conditioning for Hot Air?

Why does the radar keep beeping after applying the color change film?

Can You Shift from S to D Gear While Driving an Automatic Transmission Car?

Why does an automatic car still roll backward when in D gear?

How to Obtain the Inspection Flow Information of a Driver's License?