What is the function of the electric vacuum pump in new energy vehicles?

1 Answers
CodyLee
07/25/25 4:51pm
The function of the electric vacuum pump in new energy vehicles is to generate negative pressure, thereby increasing braking force. Introduction to vacuum pumps: A vacuum pump refers to a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container and obtain a vacuum. It is an apparatus that improves, generates, and maintains a vacuum in a sealed space through various methods. Overall structural types of vacuum pumps: The arrangement structure of the vacuum pump body determines the overall structure of the pump. In the vertical structure, the intake and exhaust ports are horizontally set, making assembly and pipeline connection more convenient. However, the pump has a higher center of gravity, resulting in poor stability during high-speed operation, so this type is mostly used for small pumps.
Was this review help?
18
3
Share
More Forum Discussions

How much refrigerant should be added to Wuling Rongguang?

Wuling Rongguang requires 900g of refrigerant. 1. Introduction to refrigerant: Refrigerant is used in refrigeration and air conditioning systems to transfer heat energy and produce a cooling effect. Refrigerant is an intermediate substance in the refrigeration process. It first absorbs the cooling capacity of the refrigerant to lower its temperature and then cools other substances to be cooled. This intermediate substance is generally called refrigerant or coolant. 2. Principle of the air conditioning system: Through the operation of the refrigeration unit, the refrigerant entering the evaporator evaporates and absorbs heat. When cold water is introduced into the evaporator, heat exchange quickly occurs inside the evaporator. The heat is absorbed by the refrigerant, and the temperature drops to become chilled water. The chilled water then exchanges heat with the treated air through the surface cooler in the air conditioning equipment, thereby lowering the air temperature.
20
1
Share

What is the fuel consumption of the Volvo S80?

Volvo S80 fuel consumption is around 10L/km. 1. Introduction: The all-new Volvo S80 embodies the brand values of safety, quality, and environmental protection, while incorporating demands for design, comfort, and driving pleasure, creating a new Nordic luxury safe and comfortable vehicle for car owners. 2. Configuration: The 8-cylinder all-aluminum engine has a displacement of 4.4 liters, a maximum power of 232kW, and a maximum torque of 440Nm, with strong power that is enough to stand out among competitors. The V8 engine is equipped with variable camshaft timing and a variable intake system, with a peak torque of up to 440Nm. The V8 engine features a unique 60-degree angle design between cylinder banks, making its structure extremely compact. The Volvo V8 engine is also equipped with four catalytic converters and a highly efficient engine management system.
16
2
Share

What is the reason for the failure to shift between high and low gears?

The shifting valve is damaged. Below is an introduction to the shifting valve: 1. Introduction: The shifting valve (forced valve) is an air-operated switch valve installed at the hot end of a switching heat exchanger (or regenerator), which uses the principle of a linkage structure to achieve the opening and closing of the valve plate. 2. Equipment introduction: The switching of the shifting valve is controlled by signal compressed air from the solenoid valve. Depending on their role in the process, there are air and dirty nitrogen shifting valves, pure nitrogen suppression valves, and dirty nitrogen three-way valves, among others. Structurally, they can be divided into vertical and horizontal types. Vertical shifting valves can be further divided into air-to-open and air-to-close types. Air-to-open means that when the signal compressed air is cut off, the valve disc can automatically open under its own weight. The opposite is air-to-close. The choice between air-to-open and air-to-close is determined by the safety requirements of the device. Nitrogen shifting valves use the air-to-open type, while air shifting valves use the air-to-close type.
8
3
Share

Where should the vehicle breakdown warning sign be placed on the highway?

Place the triangular warning sign 150 meters in the direction of oncoming traffic. Below is an introduction about highways: 1. Introduction: Highway, abbreviated as expressway, refers to a road dedicated to high-speed vehicle travel. Highways have different definitions across countries, regions, eras, and academic fields. According to China's "Technical Standards for Highway Engineering" (JTGB01-2014), highways are defined as multi-lane roads exclusively for directional and lane-separated vehicle travel with full access control. The average annual daily traffic volume for highways should exceed 15,000 passenger car units, with design speeds ranging from 80 to 120 kilometers per hour. 2. Social Benefits: Highways are symbols of modernization and reflect a nation's comprehensive strength. Their construction and operation involve various aspects of the national economy and social life.
6
1
Share

What Causes Vibration in the Accelerator Pedal at 100 km/h on the Highway?

There are three possible conditions for the vehicle: 1. Severe engine carbon buildup: The most common cause of car vibration is a dirty throttle body or excessive carbon deposits in the fuel injectors. When there is too much carbon buildup inside the engine, the gasoline sprayed by the cold-start injector can be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making it difficult to start. 2. Ignition system issues: Check the condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or weak sparking from the spark plugs can also lead to such faults. 3. Unstable fuel pressure: If you have already cleaned the engine carbon deposits, cleaned the throttle body, replaced the oil seals and spark plugs, but still notice body vibration at idle, it is recommended to visit a 4S shop to check whether the fuel supply pressure and intake pressure sensors are functioning properly. Abnormal fuel pump pressure or incorrect readings and poor performance of the intake pressure sensor can cause body vibration. 4. Aging engine components: Car vibration can also be related to aging engine mounts (also known as engine mounts). Engine mounts are essentially the shock absorption system for the engine, responsible for absorbing minor vibrations during operation. If the engine mounts are faulty, these vibrations can be transmitted to the steering wheel and the cabin, causing vibrations at idle.
17
1
Share

What does 72-color ambient light mean?

72-color ambient light means the ambient light setting button has a range, where 72 colors represent the colors in this space, divided quite finely. Below is an introduction to ambient light: Ambient Light Introduction: Car ambient light is a decorative lighting lamp, usually decorated with red, blue, and green colors. Its main purpose is to make the car look more beautiful at night. However, the cost of ambient lights in the form of light strips is relatively high, and such features are typically found only in luxury vehicles. Function of Ambient Light: Car ambient light is designed to make driving more relaxing at night, helping to prevent drowsiness while driving. Driving at night can be distracting. It helps the driver stay safer while driving and is a good driving practice, but it must be used appropriately. Precautions for Using Ambient Light: When selecting small car accessories, it is crucial not to compromise driving safety. Although the aesthetics of the car are important, driving safety is the top priority. Therefore, when using ambient lights, they must not interfere with driving.
14
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.