Author Topic: brake horsepower  (Read 2407 times)

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Offline KNG P1N

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brake horsepower
« on: Oct 29, 2003, 10:04AM »
wats the differnce between horsepower and brake horsepower?
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Offline RichTRX

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Re:brake horsepower
« Reply #1 on: Oct 29, 2003, 11:01AM »
I think brake horsepower is measured using an engine brake dyno connected to the flywheel, but don't quote me on that.

I've also seen B.H.P. as British Horsepower, which of course is slightly different.

Japan and europe also use a power rating called P.S. which is nearly the same as brake horsepower.
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Offline MR.TRX

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Re:brake horsepower
« Reply #2 on: Oct 30, 2003, 01:56AM »
(bhp) ia measurement of the actual usable power (not calculated power) measured at the  crankshaft rather than at the driveshaft or the wheels. and none of the auxiliaries (gearbox, alternator, differential, water pump, etc.) are attached.

standars term horsepower is measured at th wheels with all accessories attached and it will be considerably lower than BHP
« Last Edit: Oct 30, 2003, 01:59AM by MR.TRX »
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Offline SSS

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Re:brake horsepower
« Reply #3 on: Oct 30, 2003, 10:08AM »
The "brake" term comes from running the engine against a certain loading, or "braking" force.
This is the principle of operation behind all dynos, be it engine or chassis.

Offline KNG P1N

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Re:brake horsepower
« Reply #4 on: Oct 30, 2003, 01:34PM »
cheers
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But we miss you every day
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We'll be drinkin' in the sun
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Offline FLOGTARA

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Re:brake horsepower
« Reply #5 on: Nov 3, 2003, 02:01PM »
If brake horsepower is a measure of everything unattached and a figure at the engine, then the V8 super cars are not really that powerful then are they at only 600bhp, probably lose over 100hp through their crazy drivetrain setup ???
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