What is a vehicle PCV valve?

What is the difference between installing an automatic transmission and a manual transmission?

Introduction to the differences between automatic and manual transmissions: 1. Different principles. 1. Manual transmission: The driver manually shifts the gear lever (shift knob) to change the gear meshing position inside the transmission, altering the gear ratio to achieve speed variation. 2. Automatic transmission: While driving, the driver operates the accelerator pedal as needed, and the automatic transmission automatically shifts into different gears based on engine load and vehicle operating conditions, adjusting gear changes according to vehicle speed and engine RPM. 2. Different characteristics. 1. Manual transmission: Stable performance, high transmission efficiency, and high fuel utilization. 2. Automatic transmission: Convenient operation with flexible gear ratios. There are various types, including hydraulic automatic transmissions, mechanical continuously variable transmissions (CVT), electronically controlled mechanical automatic transmissions, and dual-clutch automatic transmissions. The transmission is connected to the engine via a clutch, allowing the transmission's input shaft to synchronize with the engine's RPM. 3. Transmission efficiency. Differences exist because manual transmissions rely entirely on mechanical transmission, whereas automatic transmissions use hydraulic transmission via a torque converter, leading to variations in operational efficiency and resulting in differences in fuel consumption. For vehicles of the same brand and displacement, manual transmissions can save approximately 10% more fuel compared to automatic transmissions.

12

3

Share

How to Fix the Engine Malfunction Light?

If the engine malfunction light is on, you can follow these steps to address the issue: First, check if the engine is running normally and whether there are issues such as shaking or emitting black smoke. If any of these problems exist, avoid restarting the engine. Specifically, do not restart the engine if the red light is on. If the engine can be started, turn it off and wait for 5-10 minutes. Without pressing the brake, press the start button once or turn the car key halfway to the 'on' position without depressing the clutch. The car will perform a self-check after powering on. Wait for 5-10 seconds and observe whether the malfunction light on the dashboard turns off. If the malfunction light remains on, visit a service center as soon as possible to diagnose the issue. The service center can use a portable diagnostic tool to read the fault code, obtain fault information, and perform targeted repairs. The engine malfunction light is an icon resembling a water tap. It comes in two colors: yellow and red. A yellow light indicates a warning, while a red light signifies a prohibition. When the yellow malfunction light is on, it means certain system parameters in the car may have exceeded the set range. The car can still be driven, but some functions may be limited. When the red malfunction light is on, the car must be stopped immediately, the engine turned off, and driving prohibited until the fault is checked. Common causes for the engine malfunction light to illuminate include: sensor failure, fuel quality issues, poor combustion of the air-fuel mixture, turbocharging problems, intake issues, exhaust problems, and anti-theft system malfunctions.

20

4

Share

Precautions for Car Battery Replacement?

Precautions for car battery replacement are as follows: 1. When replacing the car battery, the vehicle should be stopped and the engine turned off. Confirm the battery model, as batteries vary in capacity and size. It is best to choose a battery identical to the original one. 2. After purchasing the battery, carefully check the manufacturing date. Generally, batteries produced within the last 3 months are acceptable. If the battery has been in storage for more than half a year, it may affect its service life. 3. Do not casually replace the car's original battery with one of larger capacity. The car's alternator has a fixed output, and using a battery with a larger capacity may result in insufficient charging, making it difficult to start the car and causing the battery to deteriorate faster due to chronic undercharging.

18

2

Share

How Does a Variable Intake Manifold Work?

Variable intake manifold working principle: By altering the length or cross-sectional area of the intake pipe, it enhances combustion efficiency, making the engine smoother with more sufficient torque at low speeds, and more fluent with greater power at high speeds. More details about variable intake manifolds are as follows: 1. One end of the intake manifold connects to the intake valve, and the other end connects to the intake resonator chamber behind the intake manifold. Each cylinder has its own intake manifold. 2. When the engine is running, the intake valves continuously open and close. When a valve opens, the air-fuel mixture in the intake manifold passes through the valve into the cylinder at a certain speed. When the valve closes, the mixture is obstructed and rebounds, creating a vibration frequency over repeated cycles.

10

1

Share

What Are the Main Components of an Automobile Chassis?

An automobile chassis consists of four major systems: the power train system, the running gear system, the steering system, and the braking system. Its function is to receive power from the engine, enable vehicle movement, and ensure the car operates normally according to the driver's control. The running gear system is composed of the frame, axles, suspension, and wheels. The steering system includes the steering control mechanism, steering gear, and steering linkage. Functions of each chassis component: 1. The power train system transmits engine power to the driving wheels; 2. The running gear system supports and installs various automotive components, transferring and bearing loads both on and under the vehicle to ensure normal operation; 3. The steering system ensures the vehicle moves in the direction selected by the driver; 4. The braking system enables vehicle deceleration, stopping, and ensures reliable parking.

9

0

Share

How to Deal with Nervousness During the Driving Test?

Here are some methods to alleviate nervousness during the driving test: 1. Identify and fill gaps, summarize your practice sessions. Driving is a process that requires gradual proficiency, and only through repeated practice can you pass the driving test smoothly. During practice, it's essential to think carefully about which points are prone to mistakes and which require attention to detail. 2. Treat the test as practice and don't focus too much on the outcome. Even if most people don't pass the driving test on their first attempt, they can still obtain their license through subsequent efforts and retakes. Therefore, don't take temporary success or failure too seriously; maintaining a good mindset is the most important aspect of learning to drive and taking the test. 3. Before the test, adjust yourself and try to relax. Learn to relax yourself by taking deep breaths and adjusting your mindset. You can also seek encouragement from your instructor.

5

1

Share

What is a vehicle PCV valve?

What is the difference between installing an automatic transmission and a manual transmission?

How to Fix the Engine Malfunction Light?

Precautions for Car Battery Replacement?

How Does a Variable Intake Manifold Work?

What Are the Main Components of an Automobile Chassis?

How to Deal with Nervousness During the Driving Test?

What is Automotive Brake Fluid?

Can a puncture on the sidewall of a tire be repaired?

How to Check the Production Date of Glass

What is the difference between a sedan and a hatchback?