[Diy_efi] Fixed Frequency Injection

[Phil Lamovie]

Hi Paul,

Bosch "K" Type injection is zero frequency variable flow.

It is quite capable of reaching early 80's emissions levels

The problem with fixing the frequency is getting through the odd
double dose vs half dose of fuel as you go from zero rpm through
to 1800.

If you inject very often then you can overcome this partially.

Your chosen rpm allows about 60 ms of injection events so you could do
7 or 8 small pulses

I can't see where the savings in hardware or software is going to
be made.

You still have a variable pulse width injector, it's just running off
an oscillator of some type.

At most you save a connection from the alternator to  the ecu for rpm sensing

Am I missing something ?

Phil

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