- #1
evans71
- 2
- 0
Does the piston ever "stop" moving in a running engine?
well guys...does it?
well guys...does it?
The Omega Man said:No, the piston never stops "moving" in a running engine.
It changes direction and the instantaneous linear velocity equals zero at TDC and BDC but "movement" or motion involves more than simply instantaneous velocity.
The Omega Man said:Plot the wave form representing the reciprocating motion of the piston.
Then on the resulting sine wave, show the points at which the piston reaches zero velocity.
Sure. That was done in the link I provided. However, the velocity is the time derivative of that plot and guess what...there are zeros. They happen to align perfectly with the inflection points of the displacement plot. Aint calculus grand?The Omega Man said:Plot the wave form representing the reciprocating motion of the piston.
Then on the resulting sine wave, show the points at which the piston reaches zero velocity.
The Omega Man said:Once again the question as stated was, "Does the piston ever stop moving in a running engine."
A "running" engine infers that the crankshaft is constantly rotating.
The Omega Man said:Is the "movement" or motion of the piston (which is connected to a crankshaft by a lever) time-variant or time-invariant?
The Omega Man said:Once again the question as stated was, "Does the piston ever stop moving in a running engine."
A "running" engine infers that the crankshaft is constantly rotating.
My God you are so full of it. An instantaneous change in direction means an infinite acceleration which also means an infinite force. That is not what is happening at all. Please provide ONE SINGLE SOURCE for your idiotic claims. Enough of this already. You can cloud the issue all you want with piston slap and the like but you darned well know that is NOT what the OP was after.The Omega Man said:The piston never stops moving. It instantaneously changes direction.
Instantaneous velocity and motion are not the same thing.
MacLaddy said:Is the very bottom of the piston where it connects to the crankshaft considered the piston, or is that considered the push rod?
MacLaddy said:You'll have to forgive my complete ignorance of physics, as I have not even taken a single class, but it seems to me that the top of the apparatus (the piston)- moving consistently "Up & down," obviously must stop to change directions.
MacLaddy said:However, as it's on a pivot, the "rod," (if that is considered part of the piston) does not stop moving; ever. It must move continuously as it's connected to a continuously moving crankshaft.
MacLaddy said:That is, until gas is $8.00 a gallon and you can't afford to drive the Hot Rod El Camino anymore.
The Omega Man said:The piston never stops moving. It instantaneously changes direction.
Instantaneous velocity and motion are not the same thing.
There are several potential causes for a piston to stop moving in a running engine. These include a lack of lubrication, a faulty piston ring, a broken connecting rod, or a damaged crankshaft.
In most cases, a piston stopping in a running engine will cause some level of damage. This can range from minor wear and tear to catastrophic engine failure, depending on the cause of the piston stopping.
If you suspect that your piston has stopped moving in a running engine, you may notice symptoms such as loss of power, strange noises, or difficulty starting the engine. A mechanic can also perform a diagnostic test to determine if the piston is moving properly.
No, it is not safe to continue driving if a piston has stopped moving in a running engine. Continuing to drive can cause further damage to the engine and potentially lead to a breakdown or accident. It is important to address the issue as soon as possible.
To prevent a piston from stopping in a running engine, it is important to regularly maintain your vehicle and address any issues promptly. This includes changing the oil and filter regularly, replacing worn or damaged parts, and following the manufacturer's recommended maintenance schedule.