Problems about EFI engine

Hehe, solar terms are naturally used to "solar terms", that is, to "control" the flow of incoming air, so it is easy to understand.

But as 1 Lou said, the fuel injection quantity also changes with the throttle opening, but this process is controlled by computer. Simply put, it can be seen that the larger the throttle is opened, the more fuel will be ejected from the nozzle (but the actual situation is very complicated, and the two are not linear).

The oil return pipe is an integral part of the EFI system, and it forms the fuel circulation loop of the EFI system with the oil inlet pipe, oil pressure regulator, oil nozzle and other structures. Its function is to send excess fuel back to the fuel tank when the oil pressure regulator needs to reduce the input oil pressure.