Thread: Brodix IK Heads.

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Diesel has no throttle blades--------runs full open and injects amount of fuel to do what throttle pedal is calling for-----

Boosted, injected gas engine-we are just getting into direct injection engines-all previous to now fuel injected engines were just squirting fuel into the airstream at various points in the system-some at throttle plate, some were somewhere into the flow path usually at manifold to head area with others having more exotic angles,etc.
Any way, the power is requested by throttle opening and will vary with pressure altitudes having tremendous effect on amount of oygen in air --------

Originally Posted by jerry clayton

Any way, the power is requested by throttle opening and will vary with pressure altitudes having tremendous effect on amount of oygen in air --------

Which is why the EFI engine operates from absolute pressure, or alternatively measures mass air flow directly (both for boosted engines). Ray can get where he's wanting to be with the boosted & injected gas engine just fine, IMO.