What is si engine?
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The otto-cycle engine in a Mercedes-Benz slk230 has a compression ratio of 8.8. What is the ideal efficiency of the engine?
Calculate the theoretical efficiency for an otto cycle engine with γ=1.40 and r=9.50.
A turboprop engine consists of a diffuser,compressor, combustor, turbine, and nozzle. Theturbine drives a propeller as well as thecompressor. Air enters the diffuser with avolumetric flow rate of 83.7 m3/s at 40 kPa, 240 K,and a velocity of 180 m/s, and deceleratesessentially to zero velocity. The compressorpressure ratio is 10 and the compressor has anisentropic efficiency of 85%. The turbine inlettemperature is 1140 K, and its isentropic efficiencyis 85%. The turbine exit pressure is 50 kPa. Flowthrough the diffuser and nozzle is isentropic. Usingan air-standard analysis, determine: (a) the powerdelivered to the propeller, in MW. (b) the velocity atthe nozzle exit, in m/s. Neglect kinetic energyexcept at the diffuser inlet and the nozzle exit