What is the full charge voltage of a 12v car battery?

Where is the reverse gear in a manual transmission?

The position of the reverse gear in manual transmissions varies completely depending on the vehicle model. Normally, the reverse gear is located at the bottom right corner, except for Santana and Buick models, where it is positioned at the bottom left corner. Meaning: A manual transmission car is one that uses a manually operated mechanical gearbox to regulate speed. This means the driver must manually shift the gear lever to change the gear engagement inside the transmission, altering the gear ratio to achieve speed changes. Pros and Cons: The advantages of manual transmissions include simple structure, reliable performance, low manufacturing and maintenance costs, high transmission efficiency, and theoretically better fuel economy. Additionally, being purely mechanically controlled, manual transmissions offer faster shift response and more directly reflect the driver's intentions, providing a more engaging driving experience. The downside is the more complicated operation and noticeable jerking during gear shifts. Working Principle: In a manual transmission car, the power input shaft is connected to the clutch. The power transferred from the clutch is directly transmitted to the gear set through the input shaft, enabling gear shifting.

9

1

Share

What is the Impact of the Exhaust System on Vehicle Performance?

The efficiency of exhaust flow directly affects the engine's power output, influencing both the vehicle's dynamic performance and fuel economy. Additionally, the design quality of the intake and exhaust systems significantly impacts the overall noise level of the vehicle. Backpressure Exhaust: Developed to enhance low-end torque output, this type of exhaust pipe, commonly referred to as a backpressure exhaust pipe, features a unique pipe routing that recovers more low-RPM torque for the engine. It also produces less noise compared to straight-through exhaust pipes and offers relatively better quality assurance. Unlike straight-through exhaust pipes, which improve power but contribute to air pollution, backpressure exhaust pipes provide a more balanced solution. Straight-Through Exhaust: The so-called straight-through exhaust system eliminates the catalytic converter (an environmentally friendly component) and the muffler, directly releasing exhaust gases into the atmosphere. This design offers excellent exhaust flow efficiency, making it suitable for prolonged high-speed driving and racetrack use. However, it typically generates noise levels exceeding 100 decibels, produces noticeable vibrations during operation, and causes severe pollution due to untreated exhaust emissions. While it enhances high-RPM horsepower, it compromises low-to-mid-range torque, resulting in a loss of certain torque values. Modified straight-through exhaust pipes generally increase noise levels and exceed emission standards.

19

4

Share

What is the localization rate of joint venture vehicles?

The localization rate of joint venture vehicles is generally around 90%. Investment methods: The Chinese side provides land and factory usage rights, capital; foreign investors contribute brands, technologies, capital, talents, etc. Joint venture vehicles are products of such cooperation. Foreign parties provide technology, talents, brands for domestic assembly, but core technologies remain controlled by foreign entities. Joint venture vehicle brands: Joint venture brands include Citroën, Peugeot, Škoda, Mazda, Beijing Jeep, etc. Joint venture brands under FAW Group include FAW-Volkswagen, FAW-Audi, FAW-Mazda (all produced in Changchun, Jilin), FAW-Toyota (produced in Changchun Jilin, Tianjin, and Chengdu Sichuan). Joint venture brands under Dongfeng Motor Group include Dongfeng Citroën, Dongfeng Peugeot, Dongfeng Honda (all produced in Wuhan, Hubei), Dongfeng Nissan (produced in Guangzhou, Guangdong), Dongfeng Yueda Kia (produced in Yancheng, Jiangsu), Dongfeng Zhengzhou Nissan (produced in Zhengzhou, Henan), Dongfeng Yulon (produced in Hangzhou, Zhejiang).

17

2

Share

What Causes High RPM but Slow Speed in a Manual Transmission?

Here are the reasons for high RPM but slow speed in a manual transmission: Engine oil system issues: If the engine oil is insufficient for a long time, mild cases may result in insufficient power and increased fuel consumption, while severe cases may cause piston impact on the throttle, leading to mechanical damage to related components. Additionally, fuel pump failure or a clogged fuel filter can also reduce engine power. Engine intake system issues: Besides fuel, the engine also requires air. If components like the air filter or throttle valve are clogged or malfunctioning, resulting in insufficient air intake, the car may experience weak acceleration, slow speed increase, and jerking sensations. Ignition system issues: If the spark plugs misfire, leak, or fail to atomize properly, it can affect engine acceleration. Furthermore, other symptoms can help diagnose the problem. For example, if the exhaust pipe emits black smoke, it indicates issues with the combustion chamber, ignition system, or valves. If blue smoke is emitted, it may suggest engine oil entering the combustion chamber, indicating oil burning.

13

4

Share

What grade of gasoline should the Jog i125 use?

Yamaha Jog i125 has a compression ratio of 11:1, theoretically it should use 95 octane gasoline. The following are the differences between 92 and 95 gasoline: In terms of n-heptane content: 95 gasoline contains 5% n-heptane; 92 gasoline contains 8% n-heptane. In terms of isooctane content: The octane rating of 92 gasoline is lower than that of 95 gasoline. 95 gasoline contains 95% isooctane; 92 gasoline contains 92% isooctane. In terms of anti-knock performance: Different gasoline grades represent different fuel anti-knock properties. The higher the gasoline grade, the better the anti-knock performance. 95 gasoline has better anti-knock performance than 92 gasoline.

10

1

Share

Can a car go straight in a left-turn lane?

It is not allowed for a car to go straight in a left-turn lane. Under no circumstances can a left-turn lane be used for going straight, otherwise it will be a violation. If the car is in a combined left-turn and straight lane, the driver can make a judgment based on the traffic light or sign to turn left or go straight. If in a combined left-turn and straight lane, the left turn is red and the straight is green, then the car can go straight. According to the "Regulations for the Implementation of the Road Traffic Safety Law," when a motor vehicle passes through an intersection controlled by traffic signals, it must enter the guide lane according to the required direction of travel at intersections with marked guide lanes. Driving a motor vehicle on a highway without following the prescribed lane will result in a 3-point deduction and a fine. Driving a motor vehicle on an urban expressway without following the prescribed lane will also result in a 3-point deduction and a fine.

11

2

Share

What is the full charge voltage of a 12v car battery?

Where is the reverse gear in a manual transmission?

What is the Impact of the Exhaust System on Vehicle Performance?

What is the localization rate of joint venture vehicles?

What Causes High RPM but Slow Speed in a Manual Transmission?

What grade of gasoline should the Jog i125 use?

Can a car go straight in a left-turn lane?

What is the spark plug model for a 110cc underbone motorcycle?

What causes the 'ignition' display to show no start and no idle?

What is the spark plug model for the curved beam 110?

How many times can the Huaihua Subject 4 test be taken?