- i (Ex: BMW 318i) - injection
- is (Ex: BMW 318is) - injection sport
- FSI - sequential fuel injection (VW group)
- TSI - Twincharged (turbocharger + supercharger) Stratified Injection (VW group)
- MPi - multi-point injection (Renault engines)
- GDi - gasoline direct injection
- SCi - smart charge injection (Ford engines)
- JTS - jet thrust stoichiometric (Alfa Romeo engines)
- HPi - high-pressure direct-injection (Peugeot, Citroen engines)
- CGi - charged gasoline injection (Mercedes-Benz engines)
- GTDI - gasoline turbocharged direct injection (Ford engines)
- VVT-i - variable valve timing with intelligence (Toyota engines)
- VVT-iE - variable valve timing - intelligent by Electric motor (Toyota engines)
- TBi - throttle body injection
2. Diesel Engine
- D (Ex: BMW 318D) - diesel
- TD - turbo diesel
- TDI - turbocharged direct injection (VW group)
- TDCi - turbocharged common rail injection (Ford engines)
- SDI - suction direct injection (VW group)
- HDi - high-pressure direct injection (Peugeot, Citroen engines)
- JTD - multiJET Turbo Diesel (Alfa Romeo engines)
- CDTi - common rail direct turbo injection (GM Opel/Vauxhall engines)
- dCi - common rail direct injection (Renault and Nissan engines)
- I-CDTi - intelligent common rail turbocharged direct injection (Honda engines)
- CRD - common rail diesel (Jeep engines)
- D4D - Direct Injection 4 Stroke Common Rail Diesel Engine (Toyota engines)
- TTiD - twin turbo injection diesel (Saab engines)
- TiD - turbochargerd injection diesel (Saab engines)
- CRDi - common rail direct injection (Hyundai - Kia`s engines)
These are all i can remember. I`ll leave the list open....
