What is Common Rail System?
Common Rail System is a diesel fuel injection system that uses electronically controlled injection. It was originally developed by Robert Bosch GmbH in the late 1990s. It is composed of a fuel pump, rail, injectors, and electronic control unit (ECU). The ECU controls the timing and quantity of fuel injection and is programmed to maximize efficiency and minimize exhaust emissions. Common Rail Systems provide more precise fuel delivery than traditional diesel fuel systems, resulting in more consistent engine performance and lower exhaust emissions. They are used in many modern diesel engines, ranging from passenger cars to heavy-duty commercial vehicles.
Working principle of high-pressure common rail
(1) The high-pressure common rail system uses a large-volume common-rail cavity to accumulate the high-pressure fuel output by the oil pump, eliminate pressure fluctuations in the fuel, and then deliver it to each injector. By controlling the electromagnetic on the injector The valve enables the initiation and termination of injection.
The high-pressure common rail system is mainly composed of an electronic control unit, a high-pressure oil pump, a pressure accumulator (common rail pipe), an electronically controlled fuel injector, and various sensors. The low-pressure fuel pump feeds the fuel into the high-pressure fuel pump, and the high-pressure fuel pump pressurizes the fuel into the high-pressure fuel rail (accumulator), and the pressure in the high-pressure fuel rail is adjusted by the electronic control unit according to the fuel rail pressure measured by the fuel rail pressure sensor and needs The fuel in the high-pressure fuel rail passes through the high-pressure fuel pipe. According to the operating state of the machine, the electronic control unit determines the appropriate fuel injection timing and fuel injection duration. The electronic fuel injector controlled by electro-hydraulic injects fuel into the cylinder.
(1)The common rail pressure can be controlled by the high-pressure oil supply pump according to the common rail pressure command issued by the ECU.
(2)Common rail pressure is closed-loop controlled.Arrangement on the diesel engine of the common rail system
Supmeaflow, the leading provider of professional process automation instruments, is proud to announce that it has now entered into partnerships with more than 1,000 cities and 5,000 excellent enterprises at home and abroad.
The success of this expansion is due to our dedication to providing high-quality, accurate, and affordable flow meters, pressure transmitters, common rail pressure sensors, and level meters for industrial applications such as sewage treatment, environmental protection engineering, and food safety. By expanding into new markets and partnering with cities and businesses around the world, we are able to offer its products and services to a wider customer base.
This vast global reach is beneficial for everyone involved. Through these new partnerships, our customers have access to reliable, high-quality instruments and can rest assured that their needs will be met. At the same time, the company is able to strengthen its commitment to customer service and expand its reach to new markets and industries.
We are excited to be part of this ever-expanding network and looks forward to strengthening its relationships with its current partners while also continuing to forge new ones in the future.