What Causes the Steering Wheel to Shake?

What type of transmission is primarily used in automotive gearboxes?

Automotive gearboxes primarily utilize shafts and gears to transmit power. Below are the relevant details: 1. Automotive Gearbox: It is a set of speed-changing devices used to coordinate the engine's rotational speed with the actual driving speed of the wheels, aiming to achieve optimal engine performance. The gearbox can create different gear ratios between the engine and the wheels during vehicle operation. By shifting gears, the engine can operate under its best power performance conditions. The development trend of gearboxes is increasing complexity and higher automation levels, with automatic transmissions becoming the future mainstream. 2. Functions: Changing the transmission ratio to expand the range of torque and speed variations of the driving wheels, adapting to frequently changing driving conditions while keeping the engine operating under favorable conditions (higher power and lower fuel consumption); enabling the vehicle to reverse while maintaining the same engine rotation direction; utilizing neutral gear to interrupt power transmission, allowing the engine to start, idle, and facilitating gear shifting or power output in the gearbox.

14

5

Share

What Are the Causes of Insufficient Fuel Pressure in a Car?

The causes of insufficient fuel pressure in a car are: 1. Wear of the oil seal at the rear end of the fuel pump drive gear shaft or loose pipeline connections, leading to air in the pipeline; 2. Low fuel level in the tank or excessively dirty filter; 3. Wear or jamming of the fuel pump gear end face bearing, resulting in excessive clearance of the fuel pump gear shaft. The method to test fuel pressure is: 1. Turn on the ignition switch without starting the vehicle; 2. Remove the fuel pump relay and use a dedicated jumper wire to connect the fuel pump circuit; 3. After starting the vehicle, connect a fuel pressure gauge to check the fuel pressure value of the engine. The working principle of fuel pressure regulation is: The oil pressure is coordinated by the spring and the vacuum degree of the air chamber. When the oil pressure exceeds the standard value, high-pressure fuel will push the diaphragm upward, opening the ball valve, and excess fuel will flow back to the tank through the return pipe. When the pressure is below the standard value, the spring will press the diaphragm downward to close the ball valve, stopping the return of fuel.

8

2

Share

Is the Bora's engine made of iron or aluminum?

New Bora is equipped with the EA111 engine, which features a cast iron engine block and an aluminum alloy cylinder head. Definition of automobile engine: An automobile engine is the device that provides power for a car, serving as the heart of the vehicle. It determines the car's power, fuel efficiency, stability, and environmental performance. Depending on the power source, automobile engines can be categorized into diesel engines, gasoline engines, electric motors for electric vehicles, and hybrid systems, among others. Differences between automobile engines: Common gasoline and diesel engines are both types of reciprocating piston internal combustion engines, converting the chemical energy of fuel into the mechanical energy of piston movement to deliver power. Gasoline engines have higher rotational speeds, lighter weight, lower noise levels, easier starting, and lower manufacturing costs. Diesel engines, on the other hand, have higher compression ratios, greater thermal efficiency, and better fuel economy and emission performance compared to gasoline engines.

12

3

Share

Is a tire pressure of 280 too high in summer?

The value is somewhat high. For family cars in summer, the recommended tire pressure is between 230 and 260. Using 280 is not advised for two reasons: firstly, it affects the ride comfort of the vehicle, and secondly, it significantly increases the risk of tire blowouts during high-speed driving. Below is additional information: 1. Effects of high tire pressure: It can affect the vehicle's braking distance, reduce the tire's grip on the road, shorten the tire's lifespan, accelerate tread wear and aging, impair normal driving, increase fuel consumption, and in severe cases, lead to tire blowouts. Excessive tire pressure causes tire deformation, reduces overall elasticity, and increases load. 2. How to check tire pressure: Vehicles equipped with tire pressure monitoring systems can display the pressure on the dashboard or central console. Alternatively, visit a tire repair shop to use professional equipment for inspection. If the pressure is too low, it needs to be replenished; if it's too high, it should be reduced.

20

2

Share

What Causes the Abnormal Noise When Starting an Automatic Transmission Car?

Automatic transmission cars produce a clunking sound when starting due to internal transmission issues and excessively low engine RPM. Internal transmission problems: Excessive wear creates gaps, resulting in play during startup that causes clunking noises. Excessively low engine RPM: Insufficient output torque can cause gear dragging, potentially leading to abnormal noises. During rapid acceleration when engine RPM rises extremely quickly, the transmission may produce an impact when shifting from 1st to 2nd gear. When heavily depressing the accelerator to raise RPM to 5000-6000 or higher, the transmission must suddenly reduce this high RPM to 2000-3000 through gear shifting to stabilize engine speed, creating impact during this process. Maintenance methods: Replace transmission fluid and perform comprehensive transmission maintenance. Additionally, avoid aggressive daily driving to prevent accelerated transmission wear. Another important note: regardless of gear shifting operations, always use the foot brake to completely stop the vehicle first.

11

4

Share

How Long Does It Take for a New Car to Complete the Break-in Period?

Generally, it takes 1000~1500 kilometers. Below is relevant information about the car break-in period: 1. Concept: Break-in is also known as running-in. The car break-in period refers to the initial driving phase of a new car or after a major overhaul, typically 1000~1500 kilometers. This is the essential mileage required to ensure that mechanical components fully contact, frictionally adapt, and settle into their final form. During this period, the car's various parts can adjust and enhance their ability to adapt to the environment, while also wearing down any protrusions on the components. 2. Key Points to Note: Piston rings are usually composed of compression rings and oil rings. As the names suggest, compression rings are used to seal gases (preventing the mixture or exhaust gases in the cylinder from entering the crankcase, thereby avoiding a decrease in engine power and preventing oil contamination), while oil rings are used to seal oil (since the crankshaft flings oil from the crankcase onto the cylinder walls, the oil ring's role is to scrape off this oil), preventing oil from entering the combustion chamber and causing oil burning issues.

7

2

Share

What Causes the Steering Wheel to Shake?

What type of transmission is primarily used in automotive gearboxes?

What Are the Causes of Insufficient Fuel Pressure in a Car?

Is the Bora's engine made of iron or aluminum?

Is a tire pressure of 280 too high in summer?

What Causes the Abnormal Noise When Starting an Automatic Transmission Car?

How Long Does It Take for a New Car to Complete the Break-in Period?

Which One is the Clutch?

What is the Sil80?

Are Three-Cylinder Engines Fuel-Efficient?

What does 'remaining processable 11 points' mean?