Hey YOU! read this!!!!! williams.F1.engine exp

[RacingDynamcs]

Since BMW’s Formula 1 comeback, engine speed - and with it power output -has been steadily increasing – from 17.000 rpm (at the start of the 2000 season) to 18.000 (start of 2001) and 18.500 (start of 2002), all the way to the first figure in excess of the 19.000 rpm mark at Monza. BMW assumed the leadership in engine performance with the P80 in 2001 and has not_ relinquished it since.

Keep reading this is the good part!!!->

19.000 revolutions a minute means 9.500 ignitions a minute per cylinder. That translates to 158 ignitions per second for each cylinder, or one ignition every six thousandth of a second. The fuel/air mixture is drawn into the cylinder, compressed by the piston and ignited by the spark plug; then the flame front travels through the entire combustion chamber, the combustion gas expands and, by means of the pistons, provides the engine’s power before being discharged through the exhaust ports. All this happens 158 times a second in each of the 10 cylinders. Awesome statistics. By way of comparison, a production engine achieves around a third of this engine speed.

[E39 Marcin]

For some strange reason, I think your calculations are flawed.

Take the 19,000 RPM. 10 Cyls = 1900 rotations per each cyl.

Please explain how you got 9,500 roations for each cycl.

[PortalBMW]

158x60 = 9480... I think his whole math game is off though. Math was not my favorite class but I would have thought the equation would have been broken down somewhat more simplistic.

Factors:
19,000 revolutions per minute
12 cyl.
60 seconds

19,000 \ 10 = 1900

1900 revolutions per cyl. Per minute

1900 \ 60 = 31.666 ignitions per second per cyl.

31.666 x 10 = 316

316 = 316 total revolutions per second

316.6666666666666666666666666666666667 x 60 = 19000



I’m not a math expert nor do I claim to be. 158 ignitions per second seems like an awful lot compared to my 31.6. Please enlighten me if I am wrong.

[RacingDynamcs]

bmw-motorsport.com

i got that from there...check it out

[John]

A single piston stroke does not = 1 complete crank shaft rotation.

The strokes overlap, so more then piston stroke is needed to make a complete rotation of the crank. Its not a 1 to 1 relationship.

[m3supercar]

More stats for geeks

BMW's engine reached 19,050 revs

but! did you know that also equates to

1143000 per hour

1'20"264 259.828 Km/h lap completed by JPM also equates to

161.44936633946915 mph
236.79240396455475 feet per second
4735.848079291095 yards per minute
72.1743247283963 metres per second
and if you like boats
140.29566361903411 knots

if he completed the entire race at that speed the race would only last
1hr 10minutes 42.98 seconds approxamately

and his engine would complete 1257300 revs

[JetBlack2002SMG]

[Kevin2772]

i believe 9,500 is simply 19,000/2....but im not a math major or anything. I think that makes pretty much sense

[PortalBMW]

Originally posted by J.M3
A single piston stroke does not = 1 complete crank shaft rotation.

The strokes overlap, so more then piston stroke is needed to make a complete rotation of the crank. Its not a 1 to 1 relationship.

I realize that. Basically wouldnt each cyl be firing 1900 times per minute? I wasnt trying to imply after each cyl is fired it makes the crank rotate one time.

[PortalBMW]

I just relized I am very confused. I took my 316 and divided that by 2 and got 158 which is the original ignitions per second. Why is 158 the answer?

[E39 Marcin]

Ok, I started to try to figure this problem out. I swear I hate this. From my chicken scratches on my paper all I can come up with is what PortalBMW came up with. How that BMW-Motorsport site got what they did. I havent the slightest clue.

EDIT: I was refering to PortalBMW's 31.66.

[Matt]

more than one cylinder fires at once, and each cylinder only fires once per 2 engine rotations. That is the definition of a 4 stroke motor. the 2 stroke motor on my boat fires its 2 cylinders alternately, but once each per revolution.

A single piston stroke does not = 1 complete crank shaft rotation.

[Alex Mc]

Guys lets think about this for a minute, who's math do you thnk is flawed? Is it a) The BMW F1 team doesn't know how to divide, or b) You guys don't know what the hell you're dividing?

hehe, ok sorry.

anyway, it's 9500 ignitions per cylinder because a 4-stoke motor fires every other stroke, thus 19000 devided by 2 = yep, you guessed it, 9500!

[RacingDynamcs]

ahhhaah

finally someone said it

[Manny G.]

u guys have wayyyyyy too much time on your hands