An Otto cycle SI engine with a compression ratio of has peak cycle temperature and pressure of 2800 K and 9000 kPa. Cylinder pressure when the exhaust valve opens is 460 kPa and exhaust manifold...


An Otto cycle SI engine with a compression ratio of has peak cycle temperature and pressure of 2800 K and 9000 kPa. Cylinder pressure when the exhaust valve opens is 460 kPa and exhaust manifold pressure is 100 kPa.


Calculate:


(a) Exhaust temperature during exhaust stroke. [°C]


(b) Exhaust residual after each cycle. [%]


(c) Velocity out of the exhaust valve when the valve first opens. [m/sec]


(d) Theoretical momentary maximum temperature in the exhaust. [°C]

Nov 21, 2021
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