What Do the Numbers on Wheel Sizes Mean?

What does China 5 and China 6 mean for vehicles?

China 5 and China 6 refer to vehicle emission standards, which regulate the content of harmful gases such as carbon monoxide, PM, and soot emitted from vehicle exhaust. The transition from China 5 to China 6 involves improvements in intake and exhaust efficiency, exhaust gas recirculation efficiency, etc., with the ultimate goal of reducing the levels of harmful gases. More detailed information is as follows: 1. The China 6 emission standard is an upgraded version of the current China 5 standard, imposing stricter limits on the emission of CO (carbon monoxide), THC (total hydrocarbons), NMHC (non-methane hydrocarbons), NOX (nitrogen oxides), and PM (particulate matter). It also introduces new regulations on PN (particulate number). According to estimates, under the China 6 standard, light gasoline vehicles will see a reduction of approximately 50% in CO, HC, NMHC, and NOX emissions compared to the China 5 stage, with particulate emissions reduced by about 40%. For heavy-duty diesel vehicles, NOX and particulate emissions will be reduced by more than 60% compared to the China 5 stage. 2. In addition to stricter emission requirements, the cold-start test cycle has been adjusted from the NEDC cycle under China 5 to the WLTC cycle under China 6, leading to an increase in actual emissions. Starting from July 1, 2023, the dual-idle test will be replaced with a real driving emissions (RDE) test, resulting in higher exhaust emissions. Given that vehicle exhaust accounts for 20% to 40% of air pollution in first-tier cities, implementing the China 6 standard can lead to a noticeable improvement of over 10% in urban air quality.

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Under what circumstances does the front radar work?

Front radar working conditions are as follows: 1. When an obstacle is detected in the front radar detection zone, the instrument panel will immediately display the radar status interface indicating the obstacle position and alert you with an alarm sound. 2. When the obstacle leaves the front radar probe detection zone for 4 seconds, the combination instrument will switch from the radar status interface back to the trip computer interface. 3. When you start driving the vehicle and the speed is below approximately 12km/h, the front radar remains active. When the speed exceeds 12km/h, the front radar stops working. 4. After the front radar stops working, if the speed drops back below 12km/h, the front radar will remain in the off state. To reactivate the front radar at this time, you need to shift the gear from D to P or R, and then back to D, after which the front radar will turn on again. Differences between front radar and rear radar: 1. Front radar: The front radar probe is installed on the front bumper, radiating at approximately a 45-degree angle to search for targets in all directions. Its greatest advantage is the ability to detect obstacles below the bumper that are difficult for the driver to see from inside the car, such as flower beds or playing children, and provide an alarm. 2. Rear radar: Also called the reversing radar, the probe is installed on the rear bumper. When the gear lever is shifted into reverse, the reversing radar automatically starts working. When the probe detects an object behind the vehicle, the buzzer emits a warning. As the vehicle continues to reverse, the frequency of the alarm sound gradually increases, eventually becoming a continuous tone.

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What Causes Soft Brakes in the Passat?

Passat soft brake causes: 1. Air in the brake fluid; 2. External rubber damage or bulging of the brake hose causing pressure leakage; 3. Oil leakage and poor sealing in the master cylinder and wheel cylinders; 4. Brake pad wear leading to longer braking distance. The working principle of brakes is to convert the kinetic energy of the car into frictional heat energy to dissipate it. Common brake systems include drum brakes and disc brakes. The Passat measures 4765 mm in length, 1765 mm in width, and 1470 mm in height, with a wheelbase of 2803 mm. In terms of power, the Passat uses three engines: a 1.4-liter turbocharged engine, a low-power 2.0-liter turbocharged engine, and a high-power 2.0-liter turbocharged engine.

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What Are the Consequences of Continuing to Drive with a Bad Car Bearing?

Continuing to drive with a bad car bearing can have consequences ranging from minor discomfort, such as vehicle deviation and increased tire noise, to severe issues like suspension damage and steering system failure, which may lead to traffic accidents. The symptoms of a bad car bearing are as follows: 1. Symptom one: When one of the four wheel bearings is damaged, you will hear a continuous 'humming' sound inside the car while driving, and the noise increases with speed. 2. Symptom two: A slight humming sound can usually be heard starting at around 60 km/h, becomes noticeable at 70-80 km/h, and requires raising your voice to converse at 100 km/h, accompanied by a fine vibration felt under your feet.

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What type of vehicle is the Terra?

Terra is an SUV model under Zhengzhou Nissan, classified as a midsize SUV. The vehicle is equipped with a 2.5L naturally aspirated engine across all variants, delivering a maximum power of 135 kW and peak torque of 251 N·m. The engine reaches its maximum power at 6,000 rpm and peak torque at 4,000 rpm. It is paired with either a 6-speed manual transmission or a 7-speed automatic transmission. The Terra measures 4,882 mm in length, 1,850 mm in width, and 1,835 mm in height, with a wheelbase of 2,850 mm. Exterior-wise, the vehicle features robust body lines, complemented by a large chrome grille with a honeycomb blackened mesh pattern, giving it a sharp and aggressive appearance.

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Where is the trunk switch of Volkswagen Sagitar located?

The trunk switch of Volkswagen is located on the door trim panel. You can see a trunk opening button on the left front door, which is the position of the driver's seat. Simply lift the button upwards with your hand to open the trunk lid. The opening methods and usage precautions for the trunk are as follows: Trunk opening methods: The trunk can be opened by pressing the trunk opening button on the remote key or by pulling the trunk unlock button on the driver's side door. This allows you to open the trunk lid from inside the car without having to manually open it after getting out, making it very convenient and practical. Precautions for trunk usage: Be cautious when closing the trunk lid to ensure no one is between the lid and the trunk to avoid injury. After closing the trunk lid, check to ensure it is properly closed and locked to prevent it from suddenly opening while driving. The closed trunk lid should be flush with the adjacent body parts.

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What Do the Numbers on Wheel Sizes Mean?

What does China 5 and China 6 mean for vehicles?

Under what circumstances does the front radar work?

What Causes Soft Brakes in the Passat?

What Are the Consequences of Continuing to Drive with a Bad Car Bearing?

What type of vehicle is the Terra?

Where is the trunk switch of Volkswagen Sagitar located?

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