What to Do When BYD Qin's ESP System Fails to Start?

The difference between Han DM-i and DM?

The differences between Han DM-i and DM are as follows: 1. Different advantages: DM-i has multiple advantages that lead other hybrid technologies, and its "core concept" is to prioritize electricity and use fuel as a supplement. In terms of architecture, the DM-i super hybrid is based on a high-capacity battery and high-power motor, with the vehicle relying on the high-power motor for driving during operation. The gasoline engine in the Han DM primarily functions to charge the battery and only directly drives when more power is needed, working in coordination with the motor to reduce load. This hybrid technology differs from traditional hybrid technologies that rely on the engine, enabling more effective reduction in fuel consumption. 2. Different core technical components: The core component of the DM-i super hybrid technology is BYD's newly developed Xiaoyun plug-in hybrid dedicated engine, which comes in two different versions: the 1.5L engine mainly used in Qin PLUS and Song PLUS, while the DM's 1.5T turbocharged engine is used in larger models like the Tang DM-i.

12

3

Share

Why Does the Engine Sound Like a Tractor?

Here are the reasons why the engine sounds like a tractor: 1. Dirty air filter: The air filter is designed to protect the engine and reduce wear. It is usually replaced every 10,000 kilometers or so. If not replaced in time, insufficient air intake can cause low idle speed, leading to abnormal engine noise. Simply replacing the filter can solve the problem. 2. Broken high-voltage wire: A broken high-voltage wire refers to a break in the wire core, which can affect ignition and cause abnormal engine noise. 3. Spark plug lifespan: Spark plugs have a limited lifespan. After 30,000 to 40,000 kilometers, their ignition efficiency significantly decreases, leading to abnormal engine noise. 4. Carbon deposits and oil sludge blockage: Over time, carbon deposits and oil sludge can accumulate in the throttle body, idle valve, and intake ports, causing poor air intake. This affects idle stability and results in abnormal engine noise.

12

1

Share

Can Car Antifreeze Be Mixed?

Cars' antifreeze cannot be mixed. Different brands and models have different products, and you should choose the appropriate antifreeze from reputable brands based on your vehicle model. Using inferior antifreeze can cause the engine temperature to rise and corrode the engine. In winter, it is necessary to check the antifreeze level, ensuring it is adequate. If the concentration of antifreeze in the engine coolant is too low, the engine water may freeze, causing the vehicle to fail to start in the morning. The full name of antifreeze is antifreeze coolant. The main functions of antifreeze are: in winter when temperatures are low, it prevents the coolant from freezing and expanding, which could crack the radiator or damage the engine cylinder block or head; in summer when temperatures are high, it effectively prevents boiling, avoiding overheating issues.

12

2

Share

What Causes the Vehicle to Shake When Starting?

Reasons for vehicle shaking during startup: 1. Poor-quality fuel has low volatility, especially in winter when temperatures are low. During cold starts, the engine block temperature is low, making fuel atomization difficult, which prevents the fuel injected into the cylinders from fully mixing with air; 2. Carbon buildup on the engine valves and intake manifold. Since carbon deposits can absorb a certain amount of fuel, the electronic control unit may make incorrect judgments; 3. Spark plug issues: During vehicle startup, especially when fuel and lubricant temperatures are low, sufficient fuel is required to meet power demands. Over time, the electrode gap of the spark plugs gradually widens, leading to reduced ignition energy and poor fuel atomization.

5

4

Share

Is a tire pressure of 2.2 bar normal?

A tire pressure of 2.2 bar is not normal. The normal range for car tire pressure is 2.4 to 2.6 bar. In winter, it is appropriate to increase the pressure by 0.2 bar. In summer, if the car is parked outdoors, the pressure can be 0.1 bar lower than the standard to avoid high-temperature blowouts. Hazards of low tire pressure: Increased friction coefficient with the road surface, leading to higher fuel consumption; Causes the steering wheel to feel heavy and may lead to deviations, which are unfavorable for driving safety; Increases the movement of various parts of the tire, causing abnormal heat due to excessive rolling; Reduces the function of the cords and rubber, leading to delamination or cord breakage, and excessive friction with the rim, causing damage to the bead area and abnormal wear; Multiplies the friction between the tire and the ground, rapidly increasing tire temperature, softening the tire, and drastically reducing its strength. High-speed driving may lead to blowouts; Increases tire deformation, making the tire side prone to cracks, and generates flexing movements, leading to excessive heat, accelerating rubber aging, cord fatigue, and breakage, and also increases the tire's contact area with the ground, accelerating shoulder wear. Methods to address insufficient tire pressure: If no damage is visible, simply inflate to the normal tire pressure and reset the tire pressure system; If a puncture is found during inspection, promptly drive to a tire shop for repair and then reinflate; If the tire pressure warning appears again after inflation but there is no puncture, it may be due to air leakage caused by rim deformation. It is recommended to check the rim and replace it if necessary.

20

5

Share

What are the classifications of four-wheel drive in cars?

Four-wheel drive systems are mainly divided into part-time four-wheel drive and full-time four-wheel drive. Four-wheel drive means that all four wheels of the car can receive driving force, significantly improving the vehicle's off-road capability. Classifications of four-wheel drive: Part-time four-wheel drive: Most four-wheel-drive vehicles use part-time four-wheel drive. As long as there is a dedicated two-wheel-drive and four-wheel-drive switching lever or button in the car, it is a part-time four-wheel-drive vehicle. Part-time four-wheel drive is the most commonly used four-wheel-drive system in four-wheel-drive vehicles. The use of part-time four-wheel drive can be divided into two states: one is two-wheel drive, where only two wheels receive power, making it no different from an ordinary car; the other is four-wheel drive, where the front and rear axles distribute power evenly in a 50:50 ratio. Part-time four-wheel drive has a long history, with the advantages of simple structure and high reliability. After installing freewheel hubs, it becomes even more fuel-efficient. Full-time four-wheel drive is a system that keeps all four wheels of the car constantly supplied with driving force. To further subdivide full-time four-wheel drive systems, they can be divided into two categories: fixed torque distribution (50:50 ratio between front and rear) and variable torque distribution (variable power distribution ratio between front and rear). Full-time four-wheel drive also has a long history, with greater reliability, but it consumes more fuel.

6

3

Share

What to Do When BYD Qin's ESP System Fails to Start?

The difference between Han DM-i and DM?

Why Does the Engine Sound Like a Tractor?

Can Car Antifreeze Be Mixed?

What Causes the Vehicle to Shake When Starting?

Is a tire pressure of 2.2 bar normal?

What are the classifications of four-wheel drive in cars?

What Causes the Engine RPM Not to Increase When Accelerating and Lack of Power?

Can the Car Shark Fin Really Reduce Wind Resistance?

To Turn Off the Engine or Not When Refueling?

What is the difference between DJS and DSB engines?