Quick direct injection question
Quick direct injection question
As far as I can tell, my 2012 Lexus ES350 has sequential fuel injection engine.
Is that correct or do I have direct fuel inject.
Thanks,
Is that correct or do I have direct fuel inject.
Thanks,
Last edited by brucelee1; May 16, 2017 at 06:05 AM.
Thanks guys, I am glad to be rid of the direct injection that I had in the GS. Strong motor but very loud and un-Lexus like IMHO.
Also, I hear the DI motors have carbon build up issues.
Good stuff.
Also, I hear the DI motors have carbon build up issues.
Good stuff.
Interesting, according to Lexus spec sheet, the 2012 ES350 has:
Fuel System Electronically controlled sequential fuel injection (SFI)
More on that.
Sequential fuel injection
Sequential fuel injection, also called sequential port fuel injection (SPFI) or timed injection, is a type of multi-port injection. Though basic MPFI employs multiple injectors, they all spray their fuel at the same time or in groups. As a result, the fuel may “hang around” a port for as long as 150 milliseconds when the engine is idling. This may not seem like much, but it’s enough of a shortcoming that engineers addressed it: Sequential fuel injection triggers each injector nozzle independently. Timed like spark plugs, they spray the fuel immediately before or as their intake valve opens. It seems a minor step, but efficiency and emissions improvements come in very small doses.
Read more at https://www.cars.com/articles/what-a...iCW3iLMKQSD.99.
Sequential fuel injection
Sequential fuel injection, also called sequential port fuel injection (SPFI) or timed injection, is a type of multi-port injection. Though basic MPFI employs multiple injectors, they all spray their fuel at the same time or in groups. As a result, the fuel may “hang around” a port for as long as 150 milliseconds when the engine is idling. This may not seem like much, but it’s enough of a shortcoming that engineers addressed it: Sequential fuel injection triggers each injector nozzle independently. Timed like spark plugs, they spray the fuel immediately before or as their intake valve opens. It seems a minor step, but efficiency and emissions improvements come in very small doses.
Read more at https://www.cars.com/articles/what-a...iCW3iLMKQSD.99.
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