Why does everyone choose Bosch common rail system?
Best Growth IE
To be your preferred supplier in components for diesel injector systems and electronics for the exhaust system
In today's automotive industry, Bosch common rail systems have attracted much attention and have become the first choice for many diesel engines. Why are Bosch common rail systems so popular? Let’s delve deeper into this issue.
1. What is a common rail system?
Common Rail Systems, or CRS for short, as the name suggests, its core feature is that the injectors of each cylinder of the engine share the same high-pressure oil rail. This is the most significant difference from traditional in-line pumps and unit pumps.
The most significant difference in functioning common Rail system is separating opening and closing injector needle function from generating pressure function.
After the fuel is pressurized by the high-pressure oil pump, it is temporarily stored in the high-pressure fuel rail, and the injector of each cylinder injects the high-pressure fuel in the fuel rail into the corresponding cylinder under the instruction of the electronic control unit. In this way, the fuel pressurization and injection are controlled separately, which can fundamentally overcome the shortcomings of the traditional diesel engine injection system.
2. Main components of common rail system
The core components of the common rail system include high-pressure fuel pumps, high-pressure fuel rails, fuel injectors and electronic control units. In addition, it also includes some sensors, fuel lines, control wiring harnesses and other components.
High-pressure fuel pump:
Its function is to pressurize the fuel. Taking the Bosch CP4 high-pressure fuel pump as an example, it can increase the fuel pressure to 2700bar.
High pressure oil rail
It can store high-pressure fuel and supply fuel to the injectors of each cylinder. At the same time, it also acts as a pressure accumulator, which can balance the pressure fluctuations caused by the high-pressure fuel pump supply and the injector injection.
fuel injector
It can inject fuel into the cylinder according to the set injection time and amount. With extremely high oil pressure and extremely small nozzle diameter, it can obtain a very good fuel atomization effect, allowing the fuel and air to be more Mix well.
Electronic control unit
It can be said to be the "brain" of the engine. It can collect various sensor signals, perform calculations and processes according to the set program, and finally output control signals to control various actuators including fuel injectors.
3. Advantages of common rail system
More precise control：The common rail system can completely separate the generation of fuel pressure from injection control, so it can more accurately control the injection amount and injection timing, and can realize pre-injection and post-injection, which is important for optimizing the combustion process in the cylinder. Unparalleled advantages of traditional mechanical pumps
More power, lower fuel consumption：Because the fuel injection pressure is higher, better atomization effect can be achieved, fuel and air are mixed more fully, and higher combustion efficiency can be achieved. While the power is stronger, the fuel consumption rate can also be reduced.
More environmentally friendly：For the same reason, more complete combustion will also significantly reduce the content of engine exhaust pollutants, and can meet the National V, National VI or even higher emission standards.
Simpler structure：Traditional in-line fuel injection pumps and unit pumps need to be configured with the same number of plungers and cam assemblies as the number of cylinders. In comparison, the common rail system has fewer parts. For after-sales maintenance, it also means that the inventory can be larger. optimization.
Maintenance is more convenient：Due to the simpler structure and the addition of an electronic control system, it is easier to troubleshoot fault points in the common rail system. By replacing internal wear parts, the oil pump, oil rail and injector can be repaired, reducing maintenance costs.
Upgrading is easier：For engine manufacturers, it is easy to upgrade to a common rail system without changing the original engine mechanical structure. It only requires a small investment to obtain great benefits.
Since the advent of the first-generation Bosch common rail system in 1997, after three generations of development, the Bosch common rail system has shown obvious advantages in control accuracy, power, environmental protection, and maintenance convenience, so it has gradually won the favor of major commercial vehicles. Favored by manufacturers and car owners.
Best Growth lE CO. Ltd with headquarter in China has business centers in Europe and South America. As the industry's leading supplier, we provide high-quality Bosch system products, such as: nozzles, fuel injectors, fuel metering valves, high pressure sensors, injector overhaul kits -including testing equipment for labs,workshops and QC departments.
We are present on the international market for 15 years now. Four high-tech manufacturers, over 40 years of experience in the automotive, present in over 90countries, over 10000 different types of products being sold around the world,the highest quality, durability and warranty service.
Please visit our website——www.best-growth.com for more details and learn more about our products and services, if you are interested, please ask us about the detailed catalog，let us move the market together.
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