4.12.2 Monoinjection
The first part of the word comes from the Greek "monos", which means "one". In this system, manufacturers simply installed a similar mechanism instead of the carburetor. It differed in that the fuel was not atomized due to vacuum, but was injected by a single nozzle (an example of a fuel system with throttle body injection is shown in Figure 4.51). The control of the injection process was entrusted to the electronics, having achieved accurate metering of fuel during its injection.
The simplicity of the throttle body injection system is the trump card in the game against the carburetor. Low injection pressure (0.5-1.0 bar) made it possible to use a conventional electric fuel pump. And the control with the help of an electronic control unit (ECU) made it possible to constantly monitor the amount of injected fuel for maintaining the stoichiometry of the fuel mixture.
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