Vpryskovy internal combustion engine

In order to improve fuel economy, significantly reduce emissions of harmful exhaust emissions and improve the very dynamics of the car, as a result of many years of research has been invented vpryskovy internal combustion engine. Now we will tell you the basic components and working principle of this device. Fuel system Fuel supply in cars with electronic fuel injection has a number of features, in contrast to the carburetor of the engine: fuel is fed from a tank under high pressure, directly into the intake pipe are formed air-fuel mixture, just before the intake valve, by means of electromagnetic injector control the amount of fuel keeps the best, for a variety of modes of engine operation, the composition of the fuel mixture. The system main task of a system that supplies fuel, is to supply the necessary amount of fuel the engine under all possible modes of operation. The engine is fed fuel through nozzles that are installed in the inlet pipe. The system poplivopodachi includes the following elements: ramp injectors and fuel injectors, fuel pressure control fitting; fuel - drain and feed, fuel filter, fuel pressure regulator; module elektrobenzonasosa. Elektrobenzonasos Elektrobenzonasos part of the fuel pump module, which is installed on the VAZ inside the gas tank. The module consists of the pump, filters and swirlers for individual bubbles and measure the fuel level sensor. Elektrobenzonasos provides persistent pumping fuel from the tank into the fuel line. In Soviet cars most commonly used spring-type module, it is located directly in the fuel tank, cooling it happens by gasoline. Due to the fact that there is no oxygen in the body can not form an explosive mixture. Danger of detonation, so you do not. Create pressure significantly more than necessary for the normal operation of the engine (about 7 atmospheres). Elektrobenzonasos through a dedicated switch is controlled by the system. Relay stops the fuel when the ignition is turned off and the engine is running. Fuel Filter Fuel system is designed to accurately cast the amount of fuel that is necessary for optimum engine operation. If the fuel will be foreign bodies or debris, it can lead to failure of the injectors or a rapid deterioration of the pressure regulator. Therefore, engineers have betrayed the importance to the frequency of fuel. For this, the system was installed filter. The basis of this filter is a paper item, with a porosity of about 12 microns. It is located in a metal casing, and attached it through the support flanges. The degree of how often the need to change a filter depends on the level of contamination of fuel and the transmitted volume. Then allocate fuel return line and fuel lines. The fuel, which comes from the module elektrobenzonasosa in fuel rail, serves as a direct fuel. Reverse - you need to return the excess fuel, after the pressure regulator back into the tank. Fuel rail fuel rail fills the fuel evenly to all injectors. In addition to nozzles on the fuel rail is fitting pressure monitoring system and the fuel pressure regulator. Fuel pressure regulator consists of the following components: valve body, fitting to connect it to the intake tract, removal of fuel spring, valve, membrane, fuel supply; That amount of fuel which is admitted, depends on the duration of the injection phase - the speed with which will open the nozzle. Therefore, the pressure difference in the intake manifold and fuel rail must be constant. For this system, and there is a pressure regulator. He misses the excess fuel back into the tank. Rubber-membrane separates the lights on the spring and the fuel cell. When the power of the fuel pressure will be greater than the force of the spring opens the valve, which will miss the right amount of fuel in order to restore balance to the membrane. Spring chamber is directly connected to the collector inlet engine, is it just behind the throttle. Therefore, the negative pressure in the reservoir also acts on the spring chamber, the ratio of the pressure on the membrane remains at the same level as the nozzles. Depend on all the indicators from the area of ??the membrane and the spring force. Electromagnetic Electromagnetic injector nozzle vpryskovogo internal combustion engine consists of the following elements: the valve needle, needle guide, the electrical connector; core; body of the nozzle; winding; filter in the channel for supplying fuel. This is the basic unit, which is dosed injection. Electromagnetic injector has a valve needle impaled on her magnetic core. The body spray is very accurately takes its place. At rest, she pushes the needle valve seat and sealing of the dispenser, fuel outlet hole at the same time closed. When electric current passes, rises the core with a needle valve, fuel injected through a calibrated starts opening. Depending on the method of injection, the engine load and speed, while the inclusion of 1,5-18 ms, the frequency response is then equal to 4-130 Hz. The dependence of the order during which time through the nozzle will be some amount of fuel determines the efficiency of the nozzle. No need to change the nozzle in his car for more expensive, usually a tangible result, they will not do. Of all the things mentioned above, we can understand one thing: the jet - this is a very important component of the injection. Therefore, it requires much attention. How can I calculate the duration of the injection? Duration of injection (in general) can be calculated using the formula: Ti = Mair / lx Ki, where: Ki - a constant nozzle. Shows the ratio of fuel which has passed through the nozzle to the time of open state of the nozzle, depends mainly on the design of the engine; l - of the air-fuel mixture (the ratio of "fuel-air"). Determined depending on what mode the engine is running. The optimal value is equal to 1 / 14, 7; Mair - air mass released to the engine. Sensor can measure its fuel consumption; At a time when the engine is started, performed an independent calculation of the injection time without time to ignition of the fuel mass flow sensor. Effectively there last injection can be calculated taking into account additional variables which will adjust the value. For example, it may be reducing the tension in the board network machines, which will lead to a prolonged opening of the nozzle (the rise of a needle into the valve). Injector opening time is always taken into account when calculating the required length of the control signal injector.