In its modern design, its work is based on a plunger pair. Injection pump is a pump that creates the required pressure in the system (depending on the engine operating mode, this indicator can be more than 200 MPa).It is made in the form of one-piece tubes to which all circuit elements are connected. A line capable of withstanding high pressures, many times the compression ratio of the engine.The high pressure circuit consists of the following elements:

Since during the operation of the engine, the injection process occurs in a matter of fractions of a second, it is necessary that the fuel mixes with air as quickly as possible.Ĭonsider the device of this modification of the fuel system. Everyone knows that the efficiency of an engine directly depends not so much on the amount of incoming fuel as on the quality of its mixing with air. The reason for this lies in the quality of the fuel distribution within the cylinder. In this case, usually a side effect of the economy of the motor is a decrease in its performance, but in this case, the power of the unit, on the contrary, increases. And with this modification, the efficiency of the power unit increases significantly.Ĭommon rail fuel injection has improved the efficiency of the vehicle by 15%, depending on the settings of the internal combustion engine operating mode.

Compared to the gasoline counterpart, the diesel is more economical, since fuel is injected directly into the cylinder and not into the intake manifold. This type of fuel system is the most recent step in the evolution of diesel powertrains.

Common rail diesel fuel systems