Question: A spark ignition engine based on Otto cycle has a working temperature range of 25.0 C and 700.0 C and its output power is

A spark ignition engine based on Otto cycle has a working temperature

A spark ignition engine based on Otto cycle has a working temperature range of 25.0 C and 700.0 C and its output power is 200 kW. The efficiency of this engine is found to be 56.5%. a. Calculate the compression ratio (r). b. Calculate the input power. c. Calculate the mass flow rate (kg/sec) of air. d. Consider reducing the air emission by 10% while keeping the same materials for key components of the engine, maximum engine temperature of 700.0 C and input power obtained from part (b). Propose modification and analysis the possible impact on other physical properties. [for air Cp = 1.003; C = 0.717 J/kg-K]

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