What is the difference between multi-point fuel injection and direct injection in cars?

[DeWilliam]

The difference between multi-point fuel injection and direct injection in cars lies in the injection method: multi-point fuel injection has injectors mounted on the intake manifold, where fuel and air begin mixing in the manifold before entering the cylinder; direct injection injects fuel directly into the cylinder. Multi-point fuel injection in gasoline engines involves the fuel injection process occurring in the intake manifold, with a control program issuing specific timing commands to complete the injection via electronic fuel injectors. Direct injection involves installing the fuel injector in the combustion chamber, directly injecting gasoline into the cylinder combustion chamber, where air enters through the intake valve to mix with the gasoline before ignition and power generation.