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Ellison Throttle Body Injector

Throttle Body Orientation

Because the Throttle Body Injector is controlled by a diaphragm rather than a float, it is generally insensitive to the effects of gravity or to acceleration "G" loads. It may therefore be installed in just about any orientation without effecting its fuel metering.

The italicized words above are necessary because of the following minor restrictions to the ways in which the TBI can be installed:

  1. The metering tube must be parallel to the aircraft's horizontal plane, which in no way prevents it from being updraft, downdraft, sidedraft, or anyplace in between.
  2. Because of the way air enters the TBI, fuel distribution will be best if the unit is installed so that the throttle moves spanwise rather than fore and aft.   Although this rule can be violated, it may require experimentation with the inlet airbox configuration.
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