2022-11-09
Sensors: Collect the information required by the control system and convert it into electrical signals and send them to the ECU through lines
Electronic Control Unit (ECU): It provides reference voltage to various sensors, accepts electrical signals input by sensors or other devices, stores, calculates and analyzes the received signals, and sends out to the executive elements according to the results of the calculation and analysis. instruction.
Actuator: It is a device controlled by ECU to perform a certain control function.
3. Advantages of electronically controlled engine:
1. Make the engine obtain the most suitable mixture concentration under various operating conditions, and enable the engine to maintain the best power, economy and emission performance under various operating conditions.
2 It has the function of decelerating and cutting off the fuel, which can not only reduce emissions, but also save fuel.
3 When the car is driving in different regions, the engine control unit (ECU) can timely and accurately compensate for changes in air density caused by changes in atmospheric pressure or external ambient temperature.
4. During the transitional operation stage of acceleration and deceleration, the fuel control can respond quickly to make the car accelerate and decelerate better.
5. The injection pressure of fuel is increased, so the atomization effect is better; because each cylinder is installed with an injector, the fuel distribution of each cylinder is better; it is beneficial to improve the stability of engine operation.
The electrical control system is generally called the secondary control loop of electrical equipment. Different equipment has different control loops, and the control methods of high-voltage electrical equipment and low-voltage electrical equipment are also different. In order to ensure the reliability and safety of primary equipment operation, many auxiliary electrical equipment is required to serve it, and a combination of several electrical components that can realize a certain control function is called a control loop or a secondary loop. These devices shall have the following capabilities:
1. Automatic control function: The volume of high-voltage and high-current switchgear is very large, and the operating system is generally used to control the opening and closing, especially when the device fails, the switch needs to automatically cut off the circuit, and there must be a set of automatic Controlled electrical operating equipment for automatic control of power supply equipment;
2. Protection function: electrical equipment and lines will fail during operation, and the current (or voltage) will exceed the allowable working range and limit of equipment and lines, which requires a set of detection of these fault signals and automatic equipment and lines. Adjustment (disconnection, switching, etc.) of protective equipment;
3. Monitoring function: Electricity is invisible to the eyes. Whether a device is powered or powered off can not be distinguished from the outside. This requires setting up various audio-visual signals, such as lights and sounds, to conduct electrical monitoring of primary equipment;
4. Measurement function: light and sound signals can only qualitatively indicate the working status of the equipment (power or power failure). parameters such as voltage, current, frequency, and power.
In equipment operation and monitoring, most of the traditional operating components, control appliances, instruments and signals can be replaced by computer control systems and electronic components, but they still have a certain scope of application in small equipment and circuits controlled locally. . This is also the basis for the circuit to realize the automatic control of the computer. The basic loop of the commonly used control circuit consists of the following parts.
Xi'an Lihui Automation Equipment Co., Ltd. is located in Xi'an High-tech Development Zone, is a professional R & D design, production and sales
High-tech enterprise of automation equipment and manipulator solutions. Through years of hard work, the company uses foreign advanced modular design principles
Based on the idea, successfully developed the flow column screw LTH and synchronous belt LTB series hundred-line modules for general use environments. The products have a compact structure,
Low inertia, high response, low friction, low noise and good stability at low speed.
LTH, LTB series linear modules can be used alone or in combination. The products are widely used in electronics, automobiles, semiconductors, etc.
Handling, shifting, palletizing, dispensing, spraying, testing, labeling, cutting, welding, loading and unloading, etc.
Efficient production.
While creating more value for customers, our company constantly injects new elements to provide users with cost-effective products,
Focus on providing users with a full range of services, always put pre-sales and after-sales service and technical support at the top of the work, and establish a set of ten thousand
The whole pre-sale and after-sale and technical support system, with selfless professionalism and superb technology to provide customers with quality services.
"Intelligent manufacturing" is the only way for China's industrial upgrading, to contribute to the manufacturing industry and create greater value for customers
value, create a future for employees, and seek sustainable development for the enterprise.
The company follows the principle of "innovation drives development, details determine success or failure".
Feng XiaoHui
1938149058@qq.com
