from Wiktionary, Creative Commons Attribution/Share-Alike License

  • brake mean effective pressure, the average (mean) pressure which, if imposed on the pistons uniformly from the top to the bottom of each power stroke, would produce the measured (brake) power output.


Sorry, no etymologies found.


  • BMEP, explains Mr. Funnell, "is brake mean effective pressure, and there is no reason for the BMEP of a V4 to be higher than that of an inline four.",

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  • However, the ethanol helps to alleviate the NOx by reducing combustion temperatures, and according to the data, Ford has been able to increase the brake mean effective pressure (BMEP) of a prototype E85 DI V6 engine from the standard 17 BAR to about 27 BAR.


  • I also understand that torque is limited by BMEP (



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