Injector Duty Monitor

[Greg Hermann]

>>From Waterloo Ontario - yes it would read as you state - but no problem.
>>What we are trying to do is make sure the injector is not "locked on" or
>>run in fire-hose mode. The "experts" say 80% is maximum, and in the
>>scenario you propose, anything approaching 80% would be impossible.
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>Sounds to me like your reason for wanting to monitor "Duty Cycle" is to
>primarily assess the remaining control headroom of your system and its
>injectors?
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>It is true that you should size your injectors so as to obtain an 80%
>maximum control duty cycle (you can run over 80%, but you have to know your
>specific electromechanical dynamic injector constraints).
>
>But, what do you want 80% of?..................In the earlier example, you
>would want 80% of the time available for actual injection, or 80% of the
>"Ultimate" time.
>
>Once you use up 100% of the ultimate time, you will be out of control and
>out of additional injection time,  even though your dash mounted duty
>"meter"  would have you believe that you are at a super conservative 33%
>duty cycle!
>
>"Duty Meters" are great for certain tasks, I just think that they cannot be
>universally applied to all injection control systems without an
>understanding of what is to be measured and what is actually being measured.
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>Walt.

Which could be paraphresed for most tools. Things like oxy-acet torches and
1" drive breaker bars come to mind first for some strange reason! :-)

Greg