Quote:
Originally Posted by wdb
Here's what flywheels do. I particularly like the fact that the engine is only firing every now and then.
|
I saw something like this before, very good video.
So the link to our ongoing debate/discussion would be that a heavier flywheel like those big ones in the video store more power or store the power longer? Than say a lighter flywheel, completely disregarding what autoteach had explained earlier about the distance of mass to center of rotation??
I would bet that with the engine in the video, it would have to fire more often with a light flywheel, because it would slow down faster, right? Again this is a point against light flywheels giving more mpg in a car; however, the car isn't going to skip a few strokes here and there like the engine in the video.
The car engine if locked by cruise control at 70mph and is at say 1500rpm, is going to keep firing and keep injecting fuel for every cycle. So is it safe to say that the flywheel is a "load" on the crank and engine? The heavier one will store more intertia, but will be a higher load on the engine. So if my assumption (insert ass outa you and me joke) is right, and the engine has to keep firing on every cycle, but the engine "sees" a lighter load, then it will "see" more vacuum from the MAP sensor, and thus inject less fuel because the more vacuum you have the less fuel the fuel table will have the injectors inject. ???