More performance from BMW V10
By Andrew Hooper
September 15 2002
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| More performance from
BMW V10 |
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| Prior to qualifying for the
Italian Grand Prix BMW's Dr Mario Theissen was to make comments regarding
how BMW had a new innovation on their V10 engine which would see the
WilliamsF1 cars gain extra performance from a higher revving engine.
Following the second free practice
at Monza, BMW Motorsport Director Mario Theissen commented: “I think that we are well-prepared for Saturday. This optimism
refers to the fact that we have still something up our sleeve that we
haven’t shown today.”
Theissen would not go into details as to what the innovation was except he
would add: “I’m also excited personally about the impact tomorrow. All I can
say is that: it’s something technical.”
BMW Motorsport Director Gerhard Berger was confident even before the opening
of the weekend: “I assume that we are the best as far as engines are
concerned”, said the Austrian.
After qualifying it was
revealed that the BMW V10 engines of Ralf Schumacher and Juan Pablo Montoya
passed the speed threshold of 19,000 revolutions per minute for the first
time. Both drivers of the BMW WilliamsF1 Team achieved engine performance of
19,050 revs.
Compare this to the
performance of the V10 engine in BMW’s debut race at Melbourne in March
2000, where this engine performance was only doing 17,000 revolutions a
minute.
“With this record figure we have once again raised the threshold in terms of
our engine performance,” said BMW Motorsport Director Mario Theissen. “For
an engineer it is thrilling to see figures which not so long ago were
considered unattainable, suddenly becoming reality.”
Werner Laurenz, the man responsible for the development of the P82, added:
“During the race at Monza the rev counter won’t yet hit the 19,000 rpm mark.
But in principle we don’t develop special qualifying engines. Each
development stage is ultimately destined for the race, following its
successful deployment in qualifying and the completion of endurance
testing.” |
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Since BMW’s
Formula One 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.
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. |
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