Engine Speed (RPM)

Giving understanding to how fast engines move.

[@jsteins]

Most gasoline car engines turn about 2500 RPM to 3000 RPM at highway speeds... so that would be about 50 revolutions per second. (ie 25 power strokes on each piston per second) If you have a 6cyl engine, that would be 150 power strokes+sparks for whole engine per second. Another way to look at it: if caris driving 60 mph (88 feet per second) at 2500 RPM in a car with 4cyl engine, then the gas used for each piston's power stroke is moving car fwd about one foot. (or 1/3 meter) For metric perspective: if 3000RPM gets a car with 6cyl engine to 120 kph (33.3 mps) then each piston power stroke (150/sec) moves car 0.22 meters. (22.2cm or 8.75 inches) Many 4-stroke diesel engines in pickup or truck will turn about 1800 to 2100 RPM at road speed... so that is 30 to 35 turns per second. If that is a V8 truck engine, you have 120-140 power strokes per second, and could be driving 60mph, then each cyl power stroke moves truck about 7.5 inches or 19 cm. Small gas engines like motorcycles tend to turn higher speeds, and may run 6000 RPM (twice as fast as car) near 120 kph... but could only have two pistons, which would be 100 power strokes per second, so a 4stroke 2cyl engine would move cycle about 33cm per power stroke. (aprox 1ft. which is similar ratio seen with car listed first)

[@itsreal170]

my 2.0l diesel hatchback 4 cylinder engine is giving 60-70mph at 1500 - 2000 rpm is this normal?

[@tuphelo]

Fly wheel not each cylinder

[@nodical802]

In one rotation of the flywheel, each cylinder will have fired so both actually

[@JaKeV46]

@@nodical802 not in a four stroke

[@caveyful]

Is it possible to reduce centripetal force with electromagnetism? This would allow for a much higher RPM. I have asked many about this and none will reply.

[@NikolaDavidovic2006]

Yes it is indeed

[@soumikchakraborty599]

Centripetal force increase stability.. decrease ing it will decrease stability.

[@granderondeproductions3286]

What happens if you wait to change gears RIGHT before the redline, besides launching at green lights.?

[@unknown_4656]

it will wear the pistons faster, its not that bad if you dont do it that often

[@donisadiev5092]

whats the song name

[@kenesufernandez1281]

❤

[@EmilioRamos-rj5vg]

DIAGNOSTIC TECHNOLOGY

[@user-ix5vu3lp2l]

1,200 RPM

[@n085fs]

Wrong. Every cylinder is not firing that many times per minute, if it's a 4-stroke. It is if it's a 2-stroke. A 4-stroke fires every OTHER revolution. So one cylinder, like your lawnmower, at 500 RPM is firing 250 times per minute.

[@ViktorG24]

500 rotations, 125 intake, 125 compression, 125 ignition, and 125 exhaust strokes, doesnt that mean the motor will be firing 125 times a minute to remain at 500 rpm being a single cylinder 4 stroke engine?

[@n085fs]

@@ViktorG24 Top Dead Center1: Ignition happens. Power stroke on the way down. Bottom Dead Center1: Exhaust Opens. Exhaust on the way up. TDC2: Exhaust closes, Intake opens. Intake on the way down. BDC2: Intake closes. Compression stroke on the way up. Repeat back to TDC1.