Brent, etal,

 

FYI, many “timed” fuel injector systems are not really as “timed” as what you might think.  It’s true that the “timing” is in effect at relatively low throttle positions (i.e. a typical passenger car at cruise).  However, fuel is typically metered by the time the nozzle is open (or number of pulses) versus some sort of complex variable flow nozzle.  There is a tradeoff on the amount of fuel that can be pushed through a single nozzle and the quality of the atomization (i.e. the size of the nozzle).  Thus, on many high powered auto engines at high power settings (WOT) the nozzles can actually be open much longer than the intake cycle in order to achieve the required fuel flow rate.  Tradeoffs, tradeoffs.

 

Rick

 

 

… I assume that when you say "injection" you are referring to typical aircraft injection, which has a continuos fuel flow rather than timed injection….