How is the speed divided on expressway lanes?

What is the idle speed of an automatic car?

The idle speed of an automatic car is between 1800 and 2000 RPM. RPM refers to the number of revolutions per minute of the engine crankshaft. The engine speed affects the number of power strokes per unit time or the effective power output of the engine. An automatic transmission does not require the driver to manually shift gears; the vehicle automatically selects the appropriate gear based on the driving speed and traffic conditions. The gears of an automatic car are: 1. D gear refers to the drive gear; 2. R gear refers to the reverse gear; 3. P gear refers to the parking gear; 4. L gear refers to the low-speed gear; 5. N gear refers to the neutral gear; 6. W gear refers to the snow/rain gear; 7. S gear refers to the sport mode driving gear.

103

Share

Can 92 and 95 Gasoline Be Mixed?

92 and 95 gasoline cannot be mixed because they have different isooctane contents. 92 gasoline is suitable for engines with low compression ratios, while 95 gasoline is suitable for engines with high compression ratios. If 92 gasoline is added to a car that originally requires 95 gasoline, abnormal combustion may occur, leading to knocking. Knocking not only damages the combustion chamber but also directly affects the normal operation of the engine, and in severe cases, it may cause engine damage. If 95 gasoline is added to a car that originally requires 92 gasoline, although it won’t damage the engine, 95 gasoline is more expensive than 92, resulting in unnecessary costs. The differences between 92, 95, and 98 gasoline: Standard gasoline is composed of isooctane and n-heptane. Isooctane has good anti-knock properties, and its octane number is defined as 100; n-heptane has poor anti-knock properties and is prone to knocking in gasoline engines, so its octane number is defined as 0. If the gasoline is labeled as 92, it means the gasoline has the same anti-knock properties as standard gasoline containing 92% isooctane and 8% n-heptane. The same principle applies to 95 and 98 gasoline. How to handle adding the wrong gasoline: If the gasoline added has a higher octane rating than required by the car (e.g., 95 instead of 92), simply use up the gasoline and then refill with 92. If the gasoline added has a lower octane rating than required by the car (e.g., 92 instead of 95), you can add a high anti-knock fuel additive. Alternatively, you can drain the fuel tank and refill with 95 gasoline. To determine the correct gasoline for your car, refer to the vehicle’s user manual or check the fuel rating marked on the fuel tank cap.

101

Share

Where is the OBD location in the Sunny car?

The OBD location in the Sunny car is under the steering wheel cover. The OBD is a diagnostic system extended for vehicle fault diagnosis. The Sunny's body dimensions are: length 4456mm, width 1696mm, height 1514mm, wheelbase 2600mm, minimum ground clearance 116mm, and fuel tank capacity 41L. The Sunny is equipped with a 1.5L naturally aspirated engine, with a maximum power of 82kW and a maximum torque of 139Nm, paired with a CVT continuously variable transmission. It uses a MacPherson strut front suspension and a torsion beam rear suspension.

117

Share

What are the symptoms of a faulty exhaust valve in the Excelle?

The symptoms of a faulty exhaust valve in the Excelle are: 1. Blue smoke coming from the exhaust pipe; 2. It can lead to burning engine oil. The exhaust valve is also known as the oil separator or pressure control valve. The Excelle has a body size of: length 4609mm, width 1798mm, height 1486mm, with a wheelbase of 2640mm and a fuel tank capacity of 44 liters. The Excelle is equipped with a 1.3T turbocharged engine, delivering a maximum horsepower of 163 hp and a maximum power of 120 kW, with a maximum power speed of 5500 rpm. It is paired with a 6-speed automatic manual transmission. The front suspension type is MacPherson independent suspension, and the rear suspension type is multi-link independent suspension.

110

Share

Where is the fuel tank cap switch on the 2019 Bora?

The 2019 Bora does not have a fuel tank cap switch; it features a press-type fuel tank cap. The fuel tank cap refers to the compartment on the car used for storing gasoline. The Bora's body dimensions are: length 4663mm, width 1815mm, height 1462mm, with a wheelbase of 2688mm and a fuel tank capacity of 50 liters. The Bora is equipped with a 1.2T turbocharged engine, delivering a maximum power of 85kW at 5000 rpm, and a maximum torque of 200Nm between 2000 to 3500 rpm. It is paired with a 7-speed dual-clutch transmission.

120

Share

Where is the license plate Su F from?

Su F is the license plate of Nantong, Jiangsu. Su is the abbreviation for Jiangsu Province. The license plates of other regions in Jiangsu are as follows: Su A is Nanjing, Su B is Wuxi, Su C is Xuzhou, Su D is Changzhou, Su E is Suzhou, Su G is Lianyungang, Su H is Huaian, Su J is Yancheng, Su K is Yangzhou, Su L is Zhenjiang, Su M is Taizhou, Su N is Suqian. License plates, also known as vehicle registration plates, are plates hung on the front and rear of a vehicle. Their main functions are: 1. To identify the region to which the vehicle belongs; 2. To find the owner and registration information of the vehicle based on the license plate.

111

Share