compression ratio vs. peak cylinder pressure and thermal efficienty
compression ratio vs. peak cylinder pressure and thermal efficienty
(OP)
Hello, Merry Christmas to everyone! I wanna ask: if I increase compression ratio, cylinder peak pressure also increase? And how compression ratio increases thermal efficienty?





RE: compression ratio vs. peak cylinder pressure and thermal efficienty
RE: compression ratio vs. peak cylinder pressure and thermal efficienty
"Schiefgehen will, was schiefgehen kann" - das Murphygesetz
RE: compression ratio vs. peak cylinder pressure and thermal efficienty
P.S. sorry for my english :)
RE: compression ratio vs. peak cylinder pressure and thermal efficienty
In reality, neither volume is easy to determine directly. Yes, the volume at BDC is a known value, but because the exhaust valve is opened before BDC, the real cycle has departed from the ideal cycle in the P-V diagram.
With cylinder pressure high speed data acquisition combined with heat release analysis, it is possible to analytically determine the "effective expansion ratio" (EER), which directly correlates to combustion efficiency, as you would expect.
"Schiefgehen will, was schiefgehen kann" - das Murphygesetz
RE: compression ratio vs. peak cylinder pressure and thermal efficienty
RE: compression ratio vs. peak cylinder pressure and thermal efficienty
RE: compression ratio vs. peak cylinder pressure and thermal efficienty
110 / 10 = 11
120 / 20 = 6
RE: compression ratio vs. peak cylinder pressure and thermal efficienty
RE: compression ratio vs. peak cylinder pressure and thermal efficienty