What is the 'Large Circle Run' in Subject 2?

Why does the car vibrate when idling with the AC on?

When idling with the AC on, the car may vibrate due to the following reasons: Carbon buildup in the car: As the vehicle accumulates more mileage, carbon deposits can form in various parts, especially in the throttle body. If the throttle body is excessively dirty, it can obstruct air intake, causing the engine to struggle or barely manage to power the compressor. This results in noticeable car vibrations when the AC is turned on. Engine mount failure: The engine naturally vibrates during operation (including when the compressor is activated), but these vibrations are usually dampened by the engine mounts, making them less noticeable to the driver. However, if the engine mounts are collapsed or damaged, the engine's balance is disrupted. When the compressor is engaged, it may reach a resonant frequency, intensifying the vibrations.

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What are the dimensions of the Volkswagen Magotan?

The body dimensions of the Magotan are 4866mm in length, 1832mm in width, and 1464mm in height, with a wheelbase of 2812mm. Below is an introduction to the Magotan: 1. Model: The Magotan is a model under FAW-Volkswagen, and it is also the first B-segment sedan produced and sold by FAW-Volkswagen since its establishment. 2. Exterior: The Magotan features a resolute V-shaped front face that exudes stability and grandeur, with sleek and stylish body lines, achieving an aerodynamic drag coefficient as low as 0.28. The distinctive 'compound fisheye' adaptive turning bi-xenon headlights embody the design philosophy, showcasing wisdom and composure. 3. Front Face: The overall design of the Magotan resembles the X-shape of the Phaeton, with extensive use of chrome decorations and dual horizontal lines, highlighting its noble and extraordinary royal demeanor.

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Do New Energy Vehicles Have Radiation?

New energy vehicles have almost no radiation, so there is no need to worry about radiation issues. Classification of Radiation: In nature, there are only two types of radiation: ionizing radiation and electromagnetic radiation. Generally, ionizing radiation has a greater impact on the human body, but people rarely encounter this type of radiation in daily life. Radiation in Vehicles: Electromagnetic radiation is more common. Both inside and outside the human body, there are electric and magnetic energies emitted by natural and artificial radiation sources; lightning is one example of a natural radiation source. Whether it's electric vehicles or fuel-powered vehicles, they all produce electromagnetic radiation. However, this radiation is controlled within a safe limit and does not pose any health risks to humans.

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Why does the BYD S7 always lack coolant?

BYD S7 frequently lacking coolant may be due to natural loss, coolant leakage, or coolant entering the cylinder and participating in combustion. The specific reasons are as follows: 1. Natural loss: Various fluids in a car experience loss. Since coolant is responsible for cooling the car engine and is often in a high-temperature state, a natural loss of 10%-36% per year is considered normal. According to the technical requirements of NB/SH/T0521-2010 "Ethylene Glycol and Propylene Glycol Engine Coolants" issued by the National Energy Administration, the boiling point of a 50% volume fraction of coolant is above 100°C. The loss is mainly due to natural evaporation, and without replacement, the loss ranges between 10%-36% per year. 2. Coolant leakage: The second scenario is when the coolant level drops significantly within three to four days, requiring frequent top-ups. This indicates a coolant leak. Rubber and metal pipes under constant high temperatures can age due to thermal expansion and contraction, leading to small gaps through which coolant can seep. Common leakage points include the radiator hoses, air conditioning heater hoses, thermostat, and water pump seals. Regular inspection of sealing glue, tightening clamps, and timely maintenance can ensure driving safety and prevent breakdowns or accidents. 3. Coolant entering the cylinder and participating in combustion: The third scenario involves coolant entering the cylinder and participating in combustion, such as due to cylinder block cracks, cylinder gasket burning or corrosion deformation, etc. In this case, check the oil dipstick to see if the engine oil shows emulsification (oil emulsification is when the oil turns into a milky liquid, appearing milky white or milky yellow, resembling stirred batter with bubbles). Since the cylinder block has oil and water channels, once the cylinder gasket is damaged, the water channel cannot be sealed, and coolant flows into the oil channel.

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What is the speed limit standard for urban roads?

Highway speed limits are generally 110-120km/h; primary roads, such as national highways and provincial roads, have a speed limit of 80km/h; suburban roads in urban areas have a speed limit of 70-80km/h; urban roads have a speed limit of 40-60km/h. Signage speed limit regulations: This refers to the speed indicated by speed limit signs and markings on the road. The specific speed limit is determined by the transportation department based on the road's design speed, functional type, geometric alignment characteristics, traffic flow, roadside environment, and other comprehensive factors. Road speed limit regulations: Regardless of the type of road, in sections with speed limit signs, drivers must adhere to the posted speed limits. In sections without speed limit signs, drivers must comply with the speed limits stipulated by laws and regulations.

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What is the wading depth of the BYD Han EV?

The maximum wading depth of the BYD Han EV is 250mm. The wading depth of the BYD Han EV is determined by the height of the vehicle chassis, which is the ground clearance listed in the vehicle's parameter configuration table. Generally, the greater the ground clearance, the higher the chassis, and the higher the safety factor when driving through waterlogged roads. Therefore, in terms of safe wading depth, off-road vehicles and SUVs have obvious advantages. However, for most compact and small cars with low chassis, the position of the vehicle's air intake should be used as a benchmark when passing through waterlogged roads. If the air intake of the BYD Han EV is below the water level during wading, water will be sucked into the engine's cylinders. Since water cannot be compressed like air, it will cause severe damage to the engine's mechanical components (such as connecting rods, pistons, crankshafts, etc.). Therefore, the wading depth should not exceed the height of the engine's air intake. The height of the engine's air intake, and thus the maximum wading depth, can be increased by installing a snorkel. If wading is unavoidable, the following safe and correct operations should be performed: Before driving through water, always turn off the auto start-stop function to prevent the engine from automatically restarting after stalling in the water, which could cause severe damage due to water intake. Assess the underwater road conditions based on the passage of vehicles ahead and choose an appropriate entry point. Observe the path taken by other vehicles and follow their tracks at low speed, avoiding sudden acceleration or deceleration. On roads prone to water accumulation, observe warning water level markers, trees, and other reference points such as the wheels and doors of other vehicles to estimate the water depth before deciding whether to proceed. Know your vehicle's safe wading depth. If the water depth exceeds half of the tire height or the engine's air intake, do not proceed recklessly; consider alternative routes instead.

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What is the 'Large Circle Run' in Subject 2?

Why does the car vibrate when idling with the AC on?

What are the dimensions of the Volkswagen Magotan?

Do New Energy Vehicles Have Radiation?

Why does the BYD S7 always lack coolant?

What is the speed limit standard for urban roads?

What is the wading depth of the BYD Han EV?

What causes abnormal noise in the Lavida's cold engine?

How to Reset the Tire Pressure Monitoring on a Cruze?

How to Replace the Remote Battery for BMW 3 Series?

What is the fuel tank capacity of the Cruze?