Injector sizinhg

In the first slide of the video (before starting the video) the Max Duty Cycle is a multiplier hence the injector size is 70lb/hr.

But later in the video the Max Duty Cycle is used as a divider and so with the same numbers the injector size becomes 97lb/hr.

I think the 2nd is correct as decreasing the max duty should increase the injector size.

What about BSFC? Isn't the 0.55 too low for a turbo charged engine?

Thanks

both are correct because at that point the maximum working duty had not been discussed duty. but you are also correct use the 2nd example for safety margin. 0.55-0.6 is fine for most applications

Regards Ross