Injector Duty Monitor

[Walter Sherwin]

>
>DUTY CYCLE is calculated, by meters, as the percentage of time the
>circuit is "asserted" between event triggers. This means that the
>"period" is measured from injector opening to injector opening, or
>injector closing to injector closing. The percentage of this period
>occupied by the "asserted" mode, or injector energized, is read as DUTY
>CYCLE. As such, there is NO requirement to know the firing mode of the
>engine, or anything else. It WILL be accurate.
>The DUTY RATIO is the ratio of time on vs time off and is generally not
>used. This would be stated as 8:2, not 80%. Even with duty ratio, the
>effect is the same - conversion is direct as long as the 2 numbers
>(before and after colon) add up to 10.
>
>I fail to see how the injection mode can affect this.