Could you clarify, what do you mean by that? Type of engine, input parameters etc.?
Natuaturally aspirated Single cylinder FOUR stroke water cooled CI engine of 5 kW and 17:1 CR , running at 1500 rpm and full load condition
Not sure I understand the question. Are you looking for the average pressure inside a cylinder, based on the peak pressure? From wikipedia: The mean effective pressure is a quantity relating to the operation of a reciprocating engine and is a valuable measure of an engine's capacity to do work that is independent of engine displacement. When quoted as an indicated mean effective pressure or IMEP (defined below), it may be thought of as the average pressure acting on a piston during the different portions of its cycle.
I have a similar impression like Kevin Dutcher . I still do not know, what does Nitin D Kamitkar mean by that. Perhaps, the question is about balance of IndicatedMEP, BrakeMEP and FrictionMEP pressures? If so, in-cylinder pressure measurements for the mentioned engine are needed. It is impossible to give sufficiently precise values for a particular engine without measurements under certain conditions. Generally, it is only known, that BMEP=IMEP-FMEP, and at idle run BMEP=0, so FMEP=IMEP value. Having measured values of in-cylinder pressure vs crank angle and brake torque values, the mentioned balance can be simply calculated.
@Nitin D Kamitkar
If u want to find the mean effective pressure you can use the formula
BP(Kw)= (P L n A K / 60,000)
P= bmep
L= stroke length (m)
A= area- (π/4)d*2
d= bore
K is number of cycles complete.or people take is as number of cylinder!
n =N/2
By this you can obtain bmep .
If you are looking for imep it's difficult to say correct the correct value, there are equipment to measure it.
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