Conversation so far:
what does the gdi stand for on the kia optima
Gasoline direct injection, abbreviated as GDI, is a mixture formation system for internal combustion engines that run on gasoline.
what happens in a gdi engine
In a GDI engine, fuel is injected into the combustion chamber.
who is the inventor of the GDI
GDI was developed by Hans Scherenberg

Question: When
Self-contained rewrite: when was the GDI invented