[Diy_efi] Why do some EFI systems use a cold start injector?

[Axel Rietschin]

The cold start injector is much smaller (== very fine mist) - Large
injectors found on turbo engines are not very good at metering small
quantities of fuel. Using a separate injector appropriately sized probably
helps keep the (cold engine) emissions low.

--Axel

----- Original Message -----
From: "Chris Wilson" <chris at formula3.freeserve.co.uk>
To: <Diy_efi at diy-efi.org>
Sent: Friday, April 26, 2002 1:27 AM
Subject: [Diy_efi] Why do some EFI systems use a cold start injector?


>
>
> Wondering why some (noticed Toyotas mainly) EFI systems use an
> electronic cold start injector, rather than just raising duty cycles of
> the 4 or 6 existing ones? Noticed this on MR2 turbos and Supra MKIII
> turbos for example. Does cold start need THAT much fuel the stock ones
> won't flow enough?
>
> Thanks.
>
> --
> Best regards,
>            Chris Wilson
mailto:chris at formula3.freeserve.co.uk
>                                      http://www.formula3.freeserve.co.uk
>
>
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> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://www.diy-efi.org/mailman/listinfo/diy_efi


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