What Causes the Sudden Increase in RPM When Braking with a Dual-Clutch Transmission?

Where is the USB port in the Emgrand?

Only the mid-range and high-end models of the Emgrand have a USB port, located near the cup holder in the center armrest area. Below are the specific details about the Geely Emgrand: 1. Main models: The Geely Emgrand is a sub-brand under the Geely parent brand, mainly offering B-segment sedans. 2. Emissions: It is equipped with Geely's new 4G-N series D-CVVT gasoline engine, featuring dual variable valve timing (VVT) for both intake and exhaust, meeting Euro V emission standards. 3. Configuration: The vehicle's electronic system comes from Siemens Germany, the chassis tuning is by Dutch PDE company, the control module uses Bosch M7.8 system from Germany, and it is powered by a 1.8L CVVT engine with a specific power output of 57.2 kW.

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How Long Does It Take to Charge a Car Battery?

Charging a car battery generally takes about twenty hours. Here are some extended details about car batteries: 1. Avoid Frequent Vehicle Starts: Do not crank the engine for more than 3 seconds each time you start the vehicle. If the first attempt fails, refrain from repeatedly trying to start the engine immediately. The interval between subsequent attempts should be more than 5 seconds. 2. Recognize the Signs of a Failing Battery: Some older batteries develop high internal resistance, leading to a phenomenon where they charge quickly but discharge just as fast. When a battery has been in use for about two and a half years, it is advisable to have it tested during routine maintenance to prevent unexpected failures. 3. Turn Off the Air Conditioning Before Shutting Down the Engine: Habits like leaving the air conditioning on or allowing it to start automatically with the vehicle can cause the air conditioning system to activate every time the ignition is turned on. This results in an immediate high power load on the vehicle, which over time can lead to battery wear and tear.

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Which country is the Land Rover brand from?

Land Rover is a British luxury all-terrain SUV brand founded by Maurice Wilks in 1948. It is currently owned by India's Tata Motors Group. Land Rover now has three major product families: the Range Rover series, the Discovery series, and the Defender series. The Land Rover logo consists of English letters, with three variations: LAND-ROVER, RANGE-ROVER, and DISCOVERY. The first logo represents the Land Rover brand, specifically the Evoque series; the second logo is for the Range Rover series, and the third logo represents the Discovery series under Land Rover. Key milestones in Land Rover's development are as follows: In 1948, the first Land Rover was born in post-war Britain. In 1970, the Land Rover Range Rover was introduced to the market. In 1989, the Land Rover Discovery made its debut at the Frankfurt Motor Show. In March 2000, Ford Motor Company acquired Land Rover. On March 26, 2008, India's Tata Group acquired the Land Rover brand from Ford. On January 31, 2021, Land Rover ranked 276th on the list of the world's 500 most valuable brands.

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Is it better to keep the auto start-stop function on or off?

There is no absolute good or bad in turning the auto start-stop function on or off. So what are the pros and cons? First, poorly calibrated start-stop systems can cause significant vibrations and noise during restart, affecting comfort. Second, the auto start-stop restart takes time, making it easier for other vehicles to cut in during city driving. Third, during the operation of the auto start-stop, electrical devices such as the air conditioning and power steering will temporarily stop working. Of course, there are also advantages: the start-stop function can save some fuel and reduce exhaust emissions.

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How to Calculate Fuel Consumption per 100 Kilometers?

When buying a car, everyone can see a parameter called "MIIT Fuel Consumption," which refers to the theoretical fuel consumption per 100 kilometers measured by the manufacturer under certain standards using a dynamometer. However, actual road conditions are far from perfect, so how should we measure it? First, before testing, fill the fuel tank until the pump automatically stops ("jump gun"), reset the trip meter, turn off the air conditioning or set it to automatic mode, and adjust to your most commonly used driving mode. Then, drive as you normally would on your daily commute route and at your usual pace. Once the trip meter exceeds 100 kilometers, refuel again until the pump automatically stops. Next, divide the actual fuel consumed by the actual distance traveled, and finally multiply by 100 to obtain the measured fuel consumption per 100 kilometers. Of course, if you want a more accurate measurement, you can complete the above steps in one go. For example: When we tested the fuel consumption of the Golf GTI, it traveled a total of 253.7 kilometers and consumed 19.61 liters of fuel, so its fuel consumption per 100 kilometers was (19.61 ÷ 253.7) × 100 = 7.7L/100km. Have you learned how to calculate fuel consumption per 100 kilometers?

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What is the Difference Between Dry and Wet Dual Clutch?

The biggest difference between dry and wet dual clutches lies in the connection medium between the driving and driven plates. The dry dual clutch relies on air for transmission, while the wet dual clutch uses oil. However, their working principles are largely the same, with both utilizing two sets of clutches operating simultaneously—one managing odd-numbered gears and the other handling even-numbered gears. Dry Clutch: A manual transmission friction plate clutch with low manufacturing cost and high mechanical transmission efficiency. The downside is that operation requires mastering specific techniques, can be cumbersome, and has a higher failure rate. Wet Clutch: An automatic transmission oil-immersed friction plate clutch, which requires the design of a hydraulic coupling or torque converter for flexible power connection. It has a higher manufacturing cost and lower mechanical transmission efficiency. The advantage is easier operation and a lower failure rate. The wet dual clutch transmission must include a hydraulic pump, lubricating fluid, cooling pipes, and an external cooling system. In contrast, the dry dual clutch, by eliminating these hydraulic systems, offers advantages in manufacturing cost, weight reduction, and space optimization. Additionally, without hydraulic resistance, the dry dual clutch achieves higher transmission efficiency and better fuel economy compared to the wet type. During operation, dual clutch transmissions generate heat through friction, especially in stop-and-go traffic, necessitating cooling to ensure normal functioning. The dry dual clutch relies on air cooling for heat dissipation, while the wet type, being oil-immersed, has significantly higher cooling efficiency. This makes the dry type more prone to failure, as evidenced by the widespread criticism of Volkswagen's 7-speed dry dual clutch. Usage Recommendations: Dual clutch transmissions are not suited for frequent starts, prolonged low-speed driving, or stop-and-go traffic, as these conditions can lead to overheating and potential failures. If the vehicle's computer issues a warning, it is essential to stop immediately and cool the transmission. When stuck in unavoidable traffic, try to use lower gears (including manual or S mode) to follow the flow. This can significantly reduce excessive clutch heat caused by constant gear shifting.

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What Causes the Sudden Increase in RPM When Braking with a Dual-Clutch Transmission?

Where is the USB port in the Emgrand?

How Long Does It Take to Charge a Car Battery?

Which country is the Land Rover brand from?

Is it better to keep the auto start-stop function on or off?

How to Calculate Fuel Consumption per 100 Kilometers?

What is the Difference Between Dry and Wet Dual Clutch?

What does the exclamation mark on the dashboard mean?

Who is responsible for a rear-end collision caused by the front vehicle rolling?

When will the Hongqi H9 be released?

Which country is RARONE watch from?