What Causes the Lack of Braking Force in the First Half of Braking?

Where is the OBD connector located in the old Jetta?

The OBD connector in the old Jetta is located above the clutch pedal. Open the cover outside the fuse box, and it is on the right side of the fuse box base. The OBD system is mainly used to diagnose the vehicle's operating conditions. It continuously monitors whether the vehicle's emissions exceed the standard. If they do, it will immediately issue a warning. The Jetta is a car brand under FAW-Volkswagen Automotive Co., Ltd., a joint venture of the German Volkswagen Group in China. The vehicle is equipped with an EA211 series engine, with body dimensions of 4501mm in length, 1704mm in width, and 1469mm in height, and a wheelbase of 2604mm.

2

Share

Is the Hanteng X7 New Energy a plug-in hybrid?

Hanteng X7 New Energy is a plug-in hybrid, equipped with a 1.8-liter turbocharged engine and electric motors. The 1.8-liter turbocharged engine of the Hanteng X7 New Energy delivers 170 horsepower and a maximum torque of 245 Nm, with the maximum power output achieved between 2,000 to 5,800 rpm and peak torque available from 2,000 to 4,000 rpm. The Hanteng X7 New Energy features an electric motor on the front axle and another on the rear axle: the front motor provides a maximum power of 15 kW and a maximum torque of 55 Nm, while the rear motor offers a maximum power of 53 kW and a maximum torque of 180 Nm. The dimensions of the Hanteng X7 New Energy are 4,671 mm in length, 1,902 mm in width, and 1,697 mm in height, with a wheelbase of 2,810 mm.

4

0

Share

How is Torque Generated?

Torque is generated by the explosive force produced in the engine cylinders. This explosive force drives the cylinders to perform work, and the downward motion creates a force. The force is transmitted through the connecting rod to the crankshaft, causing the crankshaft to rotate, thus forming what is commonly referred to as torque. Torque refers to the moment output from the crankshaft end of the engine. Under fixed power conditions, it has an inverse relationship with engine speed—the faster the speed, the smaller the torque, and vice versa. The unit of torque is Newton-meters (Nm). Torque reflects a vehicle's load capacity within a certain range. Comparing cars with the same type of engine, a higher torque output results in greater carrying capacity, better acceleration performance, stronger climbing ability, fewer gear shifts, and relatively reduced wear on the vehicle.

12

0

Share

Can a Class C driver's license drive a yellow-plate vehicle?

Can a Class C driver's license drive a yellow-plate vehicle? According to relevant regulations, the permitted vehicle types for Class C driver's licenses are: 1. C1 small and mini passenger vehicles, as well as light and mini cargo vehicles, and light and mini special-purpose vehicles; 2. C2 small and mini automatic transmission passenger vehicles and light and mini automatic transmission cargo vehicles; 3. C3 low-speed cargo vehicles; 4. C4 three-wheeled vehicles; 5. C5 small and mini automatic transmission passenger vehicles specially designed for disabled persons. A driver's license, also known as a driving license, is a document issued by the government transportation department to individuals who are qualified to drive, usually in the form of a card. The driver's license typically specifies the types of motor vehicles the holder is permitted to drive, such as motorcycles, passenger cars, trucks, buses, etc.

12

1

Share

How to Distinguish Between Imported and Domestic Cars?

Methods to distinguish between imported and domestic cars: 1. For the same model, check the rear of the car—domestic cars have Chinese characters, while imported ones have English. 2. Look at the Vehicle Identification Number (VIN), a 17-digit code. If the first letter is not 'L', it's an imported car. 3. Some car models from certain brands do not have domestic versions. Domestic cars refer to vehicles designed and manufactured by Chinese companies, possessing independent intellectual property rights and Chinese brand ownership. Imported cars are entirely manufactured abroad and shipped to China for sale, with no Chinese involvement in the technology or materials. Currently, there are two common types of imported cars: one is the officially authorized imports sold by 4S dealerships, known as China-spec cars. The other is vehicles imported through international channels by car dealers without official manufacturer authorization, referred to as parallel imports, which generally include U.S.-spec, Middle East-spec, Canada-spec, and Europe-spec models.

18

3

Share

Is There Any Problem with Mixing 95 and 98 Octane Gasoline?

Mixing 95 and 98 octane gasoline is problematic. If you occasionally fill up with the wrong gasoline grade, simply switch back to the correct one after using it up. However, long-term use of the wrong gasoline grade can have the following effects: For vehicles designed for lower octane gasoline, using a higher octane grade will not cause damage, but the increase in octane rating can alter the fuel's ignition point, leading to delayed combustion in the engine. This results in reduced engine power and thermal efficiency, with the actual driving experience being poorer performance. For vehicles designed for higher octane gasoline, using a lower octane grade can cause engine knocking. Because the octane rating is too low, the gasoline's ignition point decreases, causing it to ignite prematurely during the compression stroke. If combustion occurs before the spark plug fires during the compression stroke, resistance will arise during the upward stroke. This resistance makes the engine run very unevenly. If the knocking is mild, it may only increase noise without significant engine damage. However, noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, and in severe cases, cylinder scoring. In addition to checking the recommended gasoline grade in the car's manual, you can also find it on the fuel tank cap. Typically, the gasoline grade can also be determined based on the engine's compression ratio. Cars with a compression ratio between 8.6-9.9 should use 92 octane gasoline, those between 10.0-11.5 should use 95 octane, and those with higher compression ratios should use 98 octane. However, with the use of new technologies, the compression ratio alone cannot determine the appropriate gasoline grade. High-compression engines can also be tuned to use lower octane gasoline due to other influencing factors, such as ignition timing, turbocharging technology, and Atkinson cycle technology. Generally, the higher the gasoline grade, the higher the octane rating and the better the anti-knock performance. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane.

11

2

Share

What Causes the Lack of Braking Force in the First Half of Braking?

Where is the OBD connector located in the old Jetta?

Is the Hanteng X7 New Energy a plug-in hybrid?

How is Torque Generated?

Can a Class C driver's license drive a yellow-plate vehicle?

How to Distinguish Between Imported and Domestic Cars?

Is There Any Problem with Mixing 95 and 98 Octane Gasoline?

Is the car battery dead rescue insurance free?

Can Su U License Plates Enter the City?

Why is the Lamborghini logo a bull?

How to Identify a Faulty Truck Steering Gear?