Is a 15-year-old vehicle subject to annual inspection in 2021?

Is the Wuling Zhiguang 6388 Durable?

Wuling Zhiguang 6388 is durable. The Wuling automobile brand was established in 1985, embodying the spirit of "hard work and self-improvement," and has now become one of the most valuable brands in China's automotive industry. The "Wuling" text and graphic trademarks have been awarded "China Well-known Trademarks." Below is an introduction to Wuling automobiles: Technical Introduction: SAIC-GM-Wuling has a national-level technical center and a "Corporate Postdoctoral Research Station" approved by the Ministry of Personnel, hiring a group of experts and professors as technical advisors. They implement the C3P (CAD/CAE/CAM/PDM) automotive development technology system research project and collaborate with the Pan Asia Technical Automotive Center for integrated product development operations. Using General Motors' GVDP (Global Vehicle Development Process) and GMS (Global Manufacturing System) as primary methodologies, they focus on management innovation and teamwork, comprehensively enhancing the company's technological innovation capabilities. Product Range: SAIC-GM-Wuling produces over 200 models across five major series, including micro commercial vehicles, micro vans, micro double-cab trucks, micro single-cab trucks, and micro passenger vehicles. The company successfully passed the national "3C" certification in 2003 and became the only micro vehicle manufacturer to receive the national "AAA" quality and reputation rating in 2005.

6

2

Share

What does engine start-stop technology mean?

Introduction to the meaning of engine start-stop technology: Engine start-stop technology refers to the automatic shutdown of the engine when the vehicle comes to a temporary stop during driving (e.g., at a red light). When it's time to move forward again, the system automatically restarts the engine. Here are more details: 1. The working principle of the start-stop system is that when the vehicle stops moving due to traffic congestion or at an intersection, the driver presses the brake pedal and shifts to neutral. At this point, the Start/Stop system automatically checks: the engine is idling and not in gear; the wheel speed sensors of the anti-lock system show zero; the electronic battery sensor indicates sufficient energy for the next start. Once these three conditions are met, the engine automatically stops. 2. The operation of the automatic start-stop system is as follows: while driving, as soon as the brake pedal is pressed directly and the vehicle comes to a complete stop for about two seconds, the engine will automatically shut off. As long as the brake pedal is held down, the engine remains off. As soon as the brake is released or the steering wheel is turned, the engine automatically restarts immediately, allowing the driver to press the accelerator and start moving again, all while remaining in D gear.

11

2

Share

How Long Does the Driving School Learning Period Expire?

According to Article 38 of the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," the learning driving permit obtained during the process of learning to drive on training grounds and roads will expire after three years. The validity period of the learning driving permit is three years, and applicants must complete the subject two and subject three tests within this period. Failing to complete the tests within the validity period will result in the invalidation of any previously passed subjects. The passing standards for the driving license test are as follows: 1. Traffic regulations and related knowledge (Subject One) written test, with a full score of 100, and a passing score of 90 or above (including 90). 2. Field driving (Subject Two) on-site, actual vehicle operation. Only pass or fail is assessed. There are nine mandatory test items (all without poles), including reversing into a garage, turning around on a narrow road, parallel parking, stopping and starting on a slope, turning at a right angle, driving on a curve, emergency braking, driving through a tunnel, and taking a card at a toll booth. All nine items must be passed to pass the Subject Two test. 3. Road driving (Subject Three) on the highway or simulated site, actual vehicle operation. The test is fully monitored by electronic eyes and traffic police, making the road test more fair.

3

5

Share

What are the symptoms of abnormal intake manifold vacuum?

Symptoms of abnormal intake manifold vacuum are as follows: 1. It can cause weak engine operation. 2. It may lead to difficulty in engine starting. 3. It can affect emissions. 4. It may result in unstable idle. The effects of intake manifold air leakage on the engine mainly include the following aspects: 1. Abnormal intake manifold vacuum can cause weak engine operation: If the intake manifold vacuum is too low at idle, it indicates that air is entering the intake manifold through bypass routes. Since this air is not measured by the mass air flow sensor or controlled by the throttle, the sensor's reading will be lower than the actual intake air volume. The ECU determines the basic fuel injection quantity based on signals from the mass air flow sensor, leading to insufficient fuel injection and an overly lean air-fuel mixture, resulting in weak engine operation. 2. Abnormal intake manifold vacuum can cause difficulty in engine starting: If the circular cover at the end of the intake manifold's upper stabilizer chamber falls off, excessive air intake will make the air-fuel mixture too lean, causing difficulty in engine starting. 3. Abnormal intake manifold vacuum can affect emissions: Reduced intake manifold vacuum increases engine load and combustion chamber temperature, raising the peak temperature of exhaust gases per cycle, which leads to higher NOx emissions. 4. Abnormal intake manifold vacuum can cause unstable idle: If there is an intake manifold air leak, the mass air flow sensor cannot accurately measure the real intake air volume, causing the ECU to inaccurately control the air intake, resulting in unstable engine idle.

5

Share

What Causes Sudden Tire Pressure Drop?

The gradual decrease in tire pressure may be caused by a leaking valve stem, or it could be due to wheel rim deformation, which prevents a tight seal between the rim and the tire, leading to slow air leakage during use. Hazards of Overinflated Tires: Reduced tire friction and adhesion, affecting braking performance; Causes steering wheel vibration and drifting, reducing driving comfort; Accelerates wear on the central tread pattern, shortening tire lifespan; Increases vehicle vibration, indirectly affecting the lifespan of other components; Overstretches tire cords, reducing elasticity and increasing driving load; Decreases puncture resistance. Sharp objects like nails or glass can easily penetrate, causing internal cracks or blowouts. Hazards of Underinflated Tires: Increases friction with the road surface, raising fuel consumption; Makes steering heavier and prone to drifting, compromising safety; Increases movement of tire parts, leading to abnormal heat from excessive rolling; Weakens cord and rubber function, causing delamination, cord breakage, or rim friction damage; Multiplies ground friction, rapidly heating and softening tires, drastically reducing strength. High-speed driving may cause blowouts; Increases tire body deformation, causing sidewall cracks and excessive heat from flexing, accelerating rubber aging, cord fatigue, and tread shoulder wear.

10

0

Share

What is the ABS anti-lock braking system in cars?

ABS, short for Antilock Brake System, functions by automatically controlling the braking force during vehicle deceleration to prevent wheel lock-up. It maintains the wheels in a state of rolling with slight slippage (slip ratio around 20%), ensuring maximum traction between the tires and the road surface. Classification of ABS: ABS is primarily categorized based on channels. In ABS systems, each brake circuit capable of independent pressure modulation is referred to as a control channel. ABS configurations include four-channel, three-channel, two-channel, and single-channel systems. Single-channel ABS: Also known as one-channel ABS, it features a single brake pressure modulator in the rear brake circuit and typically uses one wheel speed sensor mounted on the rear axle differential (though some models may have individual sensors per rear wheel). Two-channel ABS: This configuration struggles to balance directional stability, steering control, and braking efficiency, making it rarely used in modern applications. Three-channel ABS: Provides independent control for both front wheels while jointly controlling the rear wheels under the select-low principle (where both wheels are managed by one channel to prevent lock-up of the wheel with poorer traction), also called hybrid control. Four-channel ABS: Equipped with four wheel speed sensors, this system has individual brake pressure modulators for each wheel's brake caliper circuit, enabling fully independent four-wheel control.

20

1

Share

Is a 15-year-old vehicle subject to annual inspection in 2021?

Is the Wuling Zhiguang 6388 Durable?

What does engine start-stop technology mean?

How Long Does the Driving School Learning Period Expire?

What are the symptoms of abnormal intake manifold vacuum?

What Causes Sudden Tire Pressure Drop?

What is the ABS anti-lock braking system in cars?

What is the equivalent of a 2.0t displacement?

What are the common issues with JETOUR transmissions?

What does das-auto mean?

Is Porsche Manual or Automatic Transmission?