When Should Brake Drums Be Replaced?

Is the Radiation from Electric Cars High?

Electric vehicles have virtually no radiation, and their impact on the human body is almost negligible. Currently, most electric cars have actual radiation levels below 10uT, which is even lower than the radiation from everyday mobile phones, so there is no need to worry too much. Here is additional information: 1. International Electromagnetic Field Standards: The World Health Organization (WHO) encourages the establishment of electromagnetic field limits and other control measures that provide the same or similar levels of health protection for all humans. It has approved the guidelines developed by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and encourages member states to adopt these international guidelines. Based on scientific data assessing health risks, exposure thresholds for electromagnetic fields have been determined. The criteria for setting these thresholds are whether health hazards are observed above these levels. The ICNIRP guidelines set the occupational exposure limit at 1/10 of the exposure threshold and the public exposure limit at 1/50. 2. Principles of China's Electromagnetic Environment Standards: The ICNIRP's recommended standards for electromagnetic radiation exposure limits are based on scientific data regarding thermal effects and immediate effects. Countries worldwide have developed national standards that are equal to or stricter than these guidelines. In formulating China's electromagnetic environment standards, the 'precautionary principle' recommended internationally for potential unknown adverse effects was adopted. Referencing the ICNIRP standards with a certain margin, China has established standards that are stricter than the ICNIRP exposure limits.

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What are the reasons for a car having power and fuel but not starting and making no sound?

Car having power and fuel but not starting and making no sound is due to severe wear of the starter carbon brushes, malfunction of the starter control mechanism, or damage to the starter clutch. The specific reasons for a car having power and fuel but not starting and making no sound are as follows: Severe wear of the starter carbon brushes: The symptom during startup is weak starting, and the crankshaft can be seen turning very slowly through the belt and pulley. When the wear is extremely severe, the starter cannot drive the crankshaft to rotate at all, producing only the sound of electric current. Malfunction of the starter control mechanism: In addition to the starter motor, the starter assembly includes an electromagnetic control mechanism. When the control mechanism malfunctions, the small pinion gear cannot engage with the large ring gear, preventing the engine from starting. The symptom is turning the key to start, hearing only the sound of the starter spinning at high speed without hearing the sound of the engine crankshaft flywheel operating. Damage to the starter clutch: Generally, the starter operates at a speed of 120r/min, while the engine idles at around 900r/min after starting. The function of the clutch is to prevent the engine from driving the starter in reverse after starting, which could burn out the starter, if the driver fails to release the key in time, keeping the small pinion gear and large ring gear engaged.

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Is it okay not to apply for a highway ETC card?

It is okay not to apply for a highway ETC card. Although the country strongly supports the use of ETC lanes for highway access, it is not currently mandatory for vehicle owners to use ETC. It is merely recommended, so taking the highway does not require using the ETC lane. How ETC works: Through the onboard electronic tag installed on the vehicle's windshield, specialized short-range communication is established with the microwave antenna in the ETC lane at the toll station. This utilizes computer networking technology to process backend settlements with banks, allowing vehicles to pass through highway or bridge toll stations without stopping while still paying the required fees. Benefits of installing ETC: Saves time: Eliminates the hassle of waiting in line; Green and eco-friendly: Promotes green and low-carbon travel. Vehicles passing through toll stations without stopping reduce noise and exhaust emissions, thereby minimizing pollution; Reduces wear and tear: Saves costs by decreasing the frequency of vehicle starts and brakes, lowering wear and fuel consumption. Users also enjoy a 5% discount on toll fees; Improves efficiency: Theoretical vehicle throughput in ETC lanes can increase by 2-3 times, making traditional ETC systems more updated, faster, and more high-tech.

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Where is the vehicle tracker usually installed?

Generally installed under the rear windshield brake light, in the trunk, inside the front decorative panel under the co-driver's feet, or under the driver and co-driver seats. Additionally, apart from GPS positioning, some vehicle trackers like Luge's use mobile base station positioning, which does not require GPS installation but locates by registering the vehicle's mobile phone number, offering a lower cost. Vehicle trackers are typically installed in the following locations: 1. Front and rear bumpers: Many GPS tracking companies recommend installing the GPS tracker inside the bumper. Firstly, the bumper's concave shape is suitable for placing the tracker in the groove; secondly, the wireless GPS tracker is hard to spot inside the bumper, making this location both concealed and secure. 2. Inside the trunk: The car trunk is usually spacious, providing many potential installation spots. Some drivers also lay a blanket in the trunk, which can effectively hide the GPS tracker from view. Moreover, the satellite signal in the trunk is relatively unobstructed, ensuring good positioning accuracy. The area near the tail lights in the trunk is also a good installation point. 3. Inside the spare tire: Few people would expect a GPS tracker to be hidden inside the spare tire, making this location currently very secure. However, it's important to note that the spare tire should ideally be the one mounted on the rear of the vehicle, not the one stored inside the trunk. This is because the trunk + spare tire + metal layers of the spare tire box contain too much metal, which can significantly interfere with the vehicle tracker's signal.

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What is the fuel consumption per 100 kilometers for the Lamando?

The Lamando currently has 3 available models. The Lamando 2021 230TSI DSG Fashion Edition, equipped with a 131 horsepower engine, has an NEDC fuel consumption of 5.4L per 100 kilometers. The Lamando 2021 280TSI DSG Luxury Phantom Edition and the Lamando 2021 Facelift 280TSI DSG Comfort Edition, both equipped with 150 horsepower engines, have an NEDC fuel consumption of 5.6L per 100 kilometers. All Lamando models have the same fuel tank capacity of 51L. The distance that can be covered on a full tank of fuel is as follows: For models with the 131 horsepower engine, the distance is 51/5.4*100=944km. For models with the 150 horsepower engine, the distance is 51/5.6*100=910km. Vehicle fuel consumption is directly influenced by five major factors: driving habits, the vehicle itself, road conditions, natural wind, and environmental temperature. Specific factors that can increase fuel consumption include: Driving habits: Aggressive driving behaviors such as rapid acceleration, frequent overtaking, and not easing off the throttle before reaching traffic lights can increase fuel consumption. The vehicle itself: Vehicles with larger engine displacements generally consume more fuel than those with smaller displacements because larger displacements typically produce more power, requiring more gasoline for combustion. Heavier vehicles also consume more fuel due to the greater driving torque needed. Road conditions: Driving on unpaved roads, muddy roads, soft surfaces, or mountainous terrain increases resistance and fuel consumption. Natural wind: Driving against the wind or on windy days increases vehicle resistance and fuel consumption. Low environmental temperatures: When the engine block is cold, the injected gasoline does not atomize easily during cold starts, requiring more gasoline for combustion, which increases fuel consumption. Additionally, lower temperatures prompt the engine control unit to operate at higher RPMs to warm up the engine, further increasing fuel consumption.

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When Does Turbocharging Kick In?

Turbocharging intervenes when the engine reaches its maximum torque. This is because if the engine speed is too low, it becomes difficult for the turbo to function effectively. Moreover, with insufficient exhaust flow, the power output of a turbocharged engine would be similar to that of a naturally aspirated engine. Therefore, turbocharging does not provide sufficient power at low speeds, and its intervention at maximum torque yields the best results. For example, if an engine's maximum torque range is 1800~3500 RPM, once the engine exceeds 1800 RPM, it reaches its maximum torque. At this point, during overtaking or acceleration, when the engine speed surpasses this threshold, the engine delivers its most powerful performance to facilitate rapid acceleration. However, the maximum torque and RPM range vary for each engine. Some turbocharged engines might have a range of 2000~4500 RPM, which is related to the size of the turbo. Larger turbos experience delayed RPM increases, which in turn affects the engine's performance. For typical family cars, turbo intervention occurs earlier to minimize turbo lag. Even at low speeds (1000~1500 RPM), the engine can maintain high torque. A turbocharged engine operates by utilizing the inertial force of exhaust gases to drive a turbine in the turbo chamber. This turbine, in turn, drives a coaxial impeller, which compresses air delivered through the air filter and forces it into the cylinders. Essentially, it functions like a blower connected in series to the intake manifold. As long as the engine is running, exhaust gases spin the turbine, driving the compressor impeller on the other end of the shaft. At low engine speeds, the turbine spins slowly, resulting in poor air compression, and the intake manifold remains in a state of negative pressure. Here, the turbine blades only create resistance without adding pressure. As engine speed increases, the turbine spins faster due to the exhaust gases, gradually boosting the thrust generated by the turbine blades. This shifts the intake manifold into positive pressure, with the blower continuously forcing air into it, thereby providing the vehicle with additional power.

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When Should Brake Drums Be Replaced?

Is the Radiation from Electric Cars High?

What are the reasons for a car having power and fuel but not starting and making no sound?

Is it okay not to apply for a highway ETC card?

Where is the vehicle tracker usually installed?

What is the fuel consumption per 100 kilometers for the Lamando?

When Does Turbocharging Kick In?

What brand does the GTR belong to?

What are the solutions for the hard and ineffective braking of Haval H6?

What vehicles can an A1 license drive?

What Causes the Clicking Noise When Turning the Steering Wheel in the Buick Excelle?