The Car feature: Technical issues (The maximum engine speed limits of internal combustion engines)

I am doing well, and I'm looking forward to this interesting conversation we're gonna have before we chat, uh, technical car issues, which is the maximum engine speed limits of internal combustion engines.

I lost track halfway through the sentence.

[laughs]

Bring us up to speed.

Um, so when you drive a vehicle with internal combustion engine, so either a petrol engine or a diesel engine, you will have a rev counter in front of you.

So it's got figures on there, and it might have R min, RPM or something like that description there, and it might have a red zone right at the end.

So you're probably one of those drivers that head for the red zone.

I, I...

Am I correct?

Yes.

[laughs]

For performance-orientated drivers, they will, they will plant their foot and the engine RPMs will go all the way close to the red line.

So the conservative drivers will always try to conserve fuel, drive moderately, and their engine speeds will be low.

But today we wanna talk about the maximum engine stee- speed, so where that red band on that, uh, rev counter starts.

So if you're driving a petrol, uh, vehicle, you will probably see that your rev counter can rev up to about six thousand or seven thousand RPM where the red zone starts.

Um, just to be a bit more technical before we start explaining, so revs per minute, we're talking about the revolutions of the crankshaft of the engine per minute.

Remember, the crankshaft is connected to the connecting rod, which is connected to the piston, which goes up and down the cylinder.

So if we think about six thousand RPM, that means if you divide by sixty per second, that poor piston needs to go up and down one hundred times per second.

You can't even imagine that.

So that poor piston needs to go all the way up, stop, return, come down, stop at the bottom, do the same thing again a hundred times a second at six thousand RPM.

So you can imagine the loads on the internal components at high engine speeds.

And today we wanna talk about what is actually the limit when it comes to internal combustion.

When we talk about petrol engines, what limit can they actually reach? So just to, to, to quickly summarize, um, we talk about the bore and stroke.

So it's a bit more technical, but the bore is the diameter of the, the, the cylinder or the piston, and the stroke is how far it needs to travel up and down.

So the shorter the distance it needs to travel, the better for the forces.

I am doing well, and I'm looking forward to this interesting conversation we're gonna have before we chat, uh, technical car issues, which is the maximum engine speed limits of internal combustion engines.

I lost track halfway through the sentence.

[laughs]

Bring us up to speed.

Um, so when you drive a vehicle with internal combustion engine, so either a petrol engine or a diesel engine, you will have a rev counter in front of you.

So it's got figures on there, and it might have R min, RPM or something like that description there, and it might have a red zone right at the end.

So you're probably one of those drivers that head for the red zone.

I, I...

Am I correct?

Yes.

[laughs]

For performance-orientated drivers, they will, they will plant their foot and the engine RPMs will go all the way close to the red line.

So the conservative drivers will always try to conserve fuel, drive moderately, and their engine speeds will be low.

But today we wanna talk about the maximum engine stee- speed, so where that red band on that, uh, rev counter starts.

So if you're driving a petrol, uh, vehicle, you will probably see that your rev counter can rev up to about six thousand or seven thousand RPM where the red zone starts.

Um, just to be a bit more technical before we start explaining, so revs per minute, we're talking about the revolutions of the crankshaft of the engine per minute.

Remember, the crankshaft is connected to the connecting rod, which is connected to the piston, which goes up and down the cylinder.

So if we think about six thousand RPM, that means if you divide by sixty per second, that poor piston needs to go up and down one hundred times per second.

You can't even imagine that.

So that poor piston needs to go all the way up, stop, return, come down, stop at the bottom, do the same thing again a hundred times a second at six thousand RPM.

So you can imagine the loads on the internal components at high engine speeds.

And today we wanna talk about what is actually the limit when it comes to internal combustion.

When we talk about petrol engines, what limit can they actually reach? So just to, to, to quickly summarize, um, we talk about the bore and stroke.

So it's a bit more technical, but the bore is the diameter of the, the, the cylinder or the piston, and the stroke is how far it needs to travel up and down.

So the shorter the distance it needs to travel, the better for the forces.