Is your calc result 55hp for a 4cyl with 10cm stroke, 1kg piston each (4kg. total), and
running at 3000rpm? My calc's result is just 16.5hp using the parameters.
Also it does not seem correct to conclude that the engine would not be able to reach 6600rpm if the loss comes out higher...
I posted the topic for discussion. My goal is not to prove anyone wrong but to exchange ideas/views. If we do not openly share our thoughts, then there will be no discussion. Hopefully, we can all arrive on one conclusion. And if we still cannot agree, I will definitely not be the judge... but...
Please correct me if I am wrong again based on your above answer: the flywheel only releases energy when it decelerates. This is entirely in reference to just speed fluctuation.
If we can agree on the above, then we should also be able to agree that the flywheel's diminishing effect with...
Yes, it would be much appreciated if you could support the flywheel-balanced piston energy balance with a calculus equation.
Just be aware that the issue on hand is the transfer of energy from one component to the next. The bearing design will only determine if it can survive the load or not...
Thank you for the welcome. To all, please excuse my previous posted replies as I failed to use the "insert quote" function. They now seemed out of order. Also, while I sincerely appreciate everyone's insight, the thread's goal is to have a conclusive answer (preferably supported by calculations)...
Our present day rotary engine is the Wankel wherein the rotor/piston rotates while at the same time reciprocating up and down. It suffers from premature seal failure, so maybe the rotor friction is excessive which drags the efficiency down?
The Gnome engine of 1920's was also a rotary. I...
The crankshaft counterbalance will only reduce the engine's vibration, but will not prevent the lost energy from the piston's deceleration. This is no different from the counter rotating balancer (Mitsubishi silent shaft), It effectively cancels out the engine vibration, but it reduces the...
The piston is decelerating because of the crankshaft. If you visualize the piston as a bullet, would a small-radius crankshaft be able to stop it without generating heat? If the radius is large, then the answer would be yes... but that is not the case. Most of the piston's kinetic energy will be...
Dale, yes the flywheel can store and use the energy at low speed (idling) wherein the engine can still be observed to have unstable speed. When the rpm goes up and the rpm becomes stable, the flywheel ceases to have any effect and no longer necessary.
Would it help if we base our discussion on...
As the piston of an internal combustion engine moves up and down inside the cylinder, it goes from zero-max-zero speed. In a race engine, the maximum speed may reach up to 100 mph. So the question is how much energy is expended every time the piston decelerates to zero speed when it hits bottom...
Very much interested in everything about engines. While the battery EV seems to be the generally accepted propulsion of the future, I think the Hydrogen (Flex) fueled internal combustion could prove to out-perform it in every way. An engine that is designed for Hydrogen, but could also run...