How soon can I take the exam after completing Subject 1?

How deep can the BYD Qin hybrid wade through water?

BYD Qin hybrid's wading depth ranges between 110mm to 150mm, depending on automatic suspension adjustments. Below is additional information about the BYD Qin hybrid: 1. Hybrid + Economy Mode: The engine is not used when speed is below 40KM and battery level is above 15%. When exceeding 40KM, the engine automatically starts, providing only 10% power to the vehicle. The controller gradually increases the motor's current while charging the battery. If speed remains below 40KM but battery level drops under 15%, the engine will start but only idle to recharge the battery without powering the vehicle. Once battery charge exceeds 25%, the engine automatically shuts off as long as speed stays under 40KM. 2. Hybrid + Sport Mode: The engine operates like conventional cars, requiring manual start/stop. It delivers 100% power to the wheels while the motor operates at maximum capacity.

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Can You Drive When Water Submerges the Exhaust Pipe?

Yes. You can start the ignition and let the car idle without pressing the accelerator. At this time, the exhaust pipe will discharge a lot of water until it stops dripping. Below are some relevant details: 1. Water Wading Depth: The standard water wading depth for cars is generally considered to be half the height of the wheel. This standard, proposed by some experienced drivers or experts, is for reference only. It's best to judge based on the actual situation. 2. Composition of the Car Exhaust System: The car exhaust system usually consists of the exhaust manifold, exhaust pipe, flexible connection (bellows), three-way catalytic converter, and muffler. The exhaust system is almost horizontally arranged along the chassis, with the exhaust manifold connected to the engine. The exhaust manifold is positioned higher vertically compared to other components of the exhaust system. What the car fears most is water entering the engine. The likelihood of water entering the engine through the exhaust is very low. What should be checked more carefully is whether the engine air intake at the front of the vehicle has been submerged in water.

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What are the causes of brake dragging?

Brake dragging can be caused by the following reasons: 1. Poor return of the brake master cylinder: This condition usually manifests as simultaneous braking on multiple wheels. If it is determined to be a master cylinder failure, a new master cylinder must be replaced (it is not recommended to reuse the master cylinder after repair). Brake line blockage: This typically occurs on a single wheel, requiring replacement of the affected line and investigation of the blockage cause. 2. Brake caliper (brake cylinder) failure: Poor return of the brake caliper, which may be caused by rust on the piston of the caliper cylinder due to possible moisture in the brake fluid, preventing smooth return. The piston needs to be cleaned, and in severe cases, the entire caliper assembly must be replaced. Sticking of the caliper guide pins: Due to aging or damage of the guide pin dust boots, dust and moisture can enter the pins, causing rust and preventing the brake caliper from returning promptly. The rust must be cleaned, the guide pins lubricated, and the damaged dust boots replaced.

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What causes the brakes to feel soft and then hard intermittently?

Brakes feeling soft and then hard intermittently is because the vacuum booster pump is not yet operational at that moment. The methods for brake maintenance are as follows: 1. Avoid sudden braking: Emergency braking significantly damages the brake pads, so it's important to brake gently during normal driving or use the technique of pumping the brakes, which causes less wear on the brake pads. 2. Reduce the frequency of braking: Develop a good habit of minimizing brake usage during normal driving. You can first use engine braking to reduce speed before applying the brakes for further deceleration or stopping. Downshifting can also be used more frequently to slow down. 3. Regularly inspect the brake pads: After the vehicle has traveled 40,000 kilometers or been in use for over 2 years, the brake pads may be significantly worn. It's essential to conduct thorough periodic inspections to check if the thickness of the brake pads has reached the minimum limit. If it's close to the limit, the brake pads should be replaced. Under normal driving conditions, inspect the brake pads every 5,000 kilometers, checking not only the remaining thickness but also the wear condition of the pads, whether the wear is even on both sides, and if they retract smoothly, among other factors.

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What are the names of the parts inside the transmission?

Transmission parts are named as follows: 1. Torque converter: The torque converter is mounted on the engine flywheel. Its function is to transmit engine power to the planetary gear transmission mechanism and provide a certain torque conversion capability. 2. Planetary gear transmission mechanism: The planetary gear transmission mechanism consists of two parts: the planetary gear set and the shift actuation mechanism. The planetary gear set consists of 2-3 rows of planetary gears to achieve 2-5 gear ratios; the shift actuation mechanism enables the change of gear ratios, i.e., automatic shifting. 3. Hydraulic control system: The main task of the hydraulic control system is to provide the required oil pressure to various systems of the automatic transmission based on signals such as engine load (throttle opening) and vehicle speed (speed sensor). It also switches hydraulic channels according to the gearshift lever position and driving conditions to control the torque converter and gear transmission system, as well as the operation of the lock-up clutch in the torque converter. 4. Electronic control system: In the electronic control system, sensors collect various signals, such as throttle position, vehicle speed, coolant temperature, etc., and convert them into electrical signals sent to the electronic control unit (ECU). The ECU processes the data and compares it with preset shift patterns, then sends commands to the solenoid valves to determine the correct shift timing and gear position.

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What Causes Brake Pads to Squeak When Wet?

The reasons for brake pads squeaking when wet are as follows: 1. Human factors causing the noise: It may be due to improper installation by the mechanic, where upon removal, you can see that only part of the brake pad surface shows signs of friction. Sudden noise after driving for a while is mostly caused by hard objects on the road, such as sand, gravel, or metal scraps, getting stuck in the brake pads when braking. Another issue stems from manufacturers—friction blocks of the same model brake pads may have inconsistent dimensions, especially in width, with some manufacturers having deviations of up to three millimeters. This results in a seemingly smooth brake disc surface, but if a larger brake pad is installed on a disc that was previously used with a smaller pad, it will also cause noise. 2. Product factors like brake pad material causing the noise: For example, if the brake pad material is too hard or of poor quality. While the use of asbestos-containing brake pads is prohibited, some small manufacturers still produce and sell them. Semi-metallic, asbestos-free brake pads, though offering longer mileage and being more environmentally friendly and healthier, tend to be harder in material. In contrast, asbestos brake pads, being softer, often do not produce noise even if there are scratches on the brake disc and provide a softer braking feel. If the noise is due to such material issues, the only solution is to replace the brake pads with new ones.

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How soon can I take the exam after completing Subject 1?

How deep can the BYD Qin hybrid wade through water?

Can You Drive When Water Submerges the Exhaust Pipe?

What are the causes of brake dragging?

What causes the brakes to feel soft and then hard intermittently?

What are the names of the parts inside the transmission?

What Causes Brake Pads to Squeak When Wet?

Where is the engine air intake of the Tayron located?

What is the horsepower of the Leiling?

What Are the Symptoms of Air Leakage in the Brake Air Pump?

Does Jianghuai Automobile have new energy vehicles?