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INJECTOR
The engines can be set established: • the system of fuel injection; or • system single point injection Central fuel- VA. The main advantages of injection systems comparison with petrol power systems are- Xia: • no additional resistance to the flow of air ha in the form of a diffuser of the carburettor that contributes to to improve the filling of the combustion chambers of the cylinders and obtaining a higher engine output; • improve purging of cylinders by using the possibility of a longer period t- Tiya valves (opened when both the intake and exhaust valves), • improvement of quality of preparation of the working mixture through the purging of combustion chambers with clean air without the admixture of fuel vapor; • more accurate composition of the mixture of fuel distribution in the cylinders, which gives the possibility of using gasoline with a lower octane; • significantly greater degree of optimization of the RA- the working mixture at all engine operating conditions taking into account including its technical condition. The disadvantages of the fuel injection system compared to carburetor system of the engine should be carried- t a significantly higher degree of complexity of manufacture ing parts of injection system and its saturation elek- throne devices that today leads to more expensive in manufacture and maintenance of engine operation. The system of fuel injection refers to the most modern and perfect. The main function- national element of the system is the electronic unit management (ECM), which essentially represents fight the vehicle's onboard computer. Using signals multiple sensors, the ECU provides optimal pack- management mechanisms and systems of the engine, providing the most efficient and economical operation of the engine all modes with maximum environmental protection. The system of fuel injection comprises yourself: • subsystem the air supply with the throttle valve; 76 • subsystem fuel delivery with the injectors one at each cylinder; • the system afterburning of exhaust gases; • a system for capturing and liquefying vapors of gasoline. Control the supply of air is reportt- owned by the driver by acting on the throttle SaaS lonco. The ECU depending on the degree of air provide provides optimal for different modes of operation the engine fuel supply. In addition to direct control functions ECU has the functions of self-learning, laying in memory and learn- based on the previous parameters and characteristics of the work movement gates, change of its technical condition, as well as dia- Gnostic and canadiannationa functions. The Central single-point fuel injection is the main difference from the above system: there is no separate for each cylinder (balance divided) petrol injection. The fuel supply in this system managed by the Central module injection one electromagnetic injection valve. Further throttle Zas lankai regulate the flow of toplevelwindows- Noah mixture. The distribution of the combustible mixture in the cylinders Pro- comes similar to a carburetor system. The composition and functions of the other elements of this system the same as in the system of fuel injection. |
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