For example, in a C172S fuel injected type, what does the mixture control lever control exactly in the fuel system?
They have a fuel air control unit which regulates fuel flow based on air passing through butterfly valve. Then what exactly does the mixture lever control?
I guess the fuel air control unit works to maintain e.g. 15:1 fuel air ratio and the mixture control lever selects the ratio? Like if I lean the mixture lever, would the fuel air control unit now try to make a 16:1 ratio?