[Agent WD-40]

Ok, so I know diesels don't have any butterfly plate to control air intake, or even a throttle body. I assume they just suck in as much air on each stroke as they can. Does this mean that they will fill the cylinders will different volumes of air at different RPM's, much like a gas engine will suck in different amounts of air at WOT?

If the engine controls the amount of fuel injected instead of the amount of air allowed to enter the engine, I assume the air fuel ratio will not be 14.7:1. Anybody know what the range is? So to change the amount of power you get out of the engine you squirt whatever amount of fuel you want into the cylinder and it will combust it and get the power out of the fuel. If you squirt little fuel you will get little power, more fuel more power.

First, just so I'm savvy, let’s review 14.7:1. This is the stoichiometric value of air and fuel. Having this ratio will yield full combustion (in theory) and thus maximum power. Changing that ratio will yield less than optimum power. Is this all correct?

Would there be an upper limit on how much fuel you can squirt into the cylinder to yield max power? Is their an idea number for diesel like 14.7:1 for gas?

Thanks for the help.