Fuel injection

Hi,

What is Fuel Injection? What are the benefits of Fuel Injection compare with
non Fuel Injection engine?

 

A carburetor is an analog computer, its very difficult to write complex
programs for. It feeds fuel at a rate determined by the air velocity and
throttle position. To feed fuel at different rates, such as when the
throttle is opening, requires more trouble-prone analog circuits (such
as an accelerator pump). Or to respond to different temperatures.

Fuel injection systems were not always digitally controlled. The
carburetor analog computer has to produce a vacuum over a fuel port in
order to draw fuel. Early FI was able to open a valve and pump more fuel
in response to some other kind of feedback indicating more fuel was
needed. Air velocity over a venturi wasn't needed.

Modern digital fuel injection can feed fuel limited only by feedback
sensors and the software programmer's ability. No longer when one needs
more fuel one must produce more air to draw the fuel out of the float
bowl. No longer is one limited to the simple pattern as an accelerator
pump.

 

That 15% figure sounds waaay high. Where are you getting that number?
That makes sense for a Diesel as there is no Venturi OR throttle
restriction.


-rm

 

Interesting information. Thanks....


-Rob