Equations used Otto Cycle Equations 14 R = 287 Ideal gas (KK) Specific gas constant for air, Ꭲ, =rY-1 P2 T =rY-1 ―= T₁ P1 T3 7-11 Y-1 gamma (y) = 1.4 Specific heat ratio for air Assume complete combustion for simplicity (Stoichiometric Reaction with ❤=1) p1 = 1x105 Pa Inlet air pressure (Pa) T1 = 300K Inlet air temperature (K) R Cv = = 0.718 V-1 kJ kg. K P3 × T₂ T3 = P2 Qin m Cv (T3T₂ ) Qout mCv (T4 T₁ ) 1 ŋ = 1 - ry-1

In an isochoric and isobaric combustion cycle, the indicated mean pressure is 10 bars and the maximum pressure is 60 bars. The pressure and temperature at the start of the cycle are 1 bar and 17 oC. The volumetric compression ratio is 16/1. The mass constant of gas, R = 287 J / kg K The specific heat at constant volume, cv = 718 J / kg K. Calculate the maximum temperature of the combustion cycle for a thermal efficiency of 60%.

In a gasoline engine the piston compresses the air-fuel mixture starting at a pressure of p1 = 1 bar and an ambient temperature of 27°C. The compression ratio is 9 and the combustion process is replaced by a heat treatment process of 1500 kJ/kg. calculate : a) netto work b) thermal efficiency of the engine c) average effective pressure d) maximum attainable temperature. (standard air assumption)

In a gasoline engine the piston compresses the air-fuel mixture starting at a pressure of p1 = 1 bar and an ambient temperature of 27°C. The compression ratio is 9 and the combustion process is replaced by a heat treatment process of 1500 kJ/kg. calculate a) net work, b) thermal efficiency of the engine c) average effective pressure d) maximum attainable temperature. (standard air assumption)

Temperature and pressure of air at the start of isentropic compression in a Dual Combustion Engine is 75°F & 15.1 psi. rk = 16, rp = 1.46, rc = 1.5. Determine Thermal Efficiency, and Mean Effective pressure.

State 1 for a dual combustion engine is p1 = 1 atm and T1 = 60.3 degrees Celcius; rk = 18; at the end of the constant volume combusion process the pressure is 7695 kPa, Re = 1.5 Base on 1 kg/cycle of a hot-air standard with k = 1.31, determine a) the percentage clearance, b) p, V and T at each corner point on the cycle c) W, d) e and e) Pm

Explain briefly by writing the thermal equilibrium equation in engines.

Using the basic relations given below and detailing your method and assumptions,Develop all the analytical relations required to:1) Determine the temperatures and pressures at all stages of an ideal air-standard SIOtto cycle analysis2) Show that the thermal efficiency of any internal combustion engine can besimplified as a ratio of temperature differences 3) Discuss the concept of Brake Specific Fuel Consumption (BSFC) and propose a rationale for the Figure 1 below (in other words, explain why the BSFC is decreasingbefore increasing with engine speed)

What is an internal combustion engines? Give the classification of internal combustion engines

Request: Can you please help me with answering the following question? Thank you for all your hard work here and only do what you can. Question: When a compressed gas storage tank fails, the resultant explosion occurs so rapidly that the gas cloud can be considered adiabatic and assumed to not mix appreciably with the surrounding atmosphere. Consider the failure of a 2.5-m3 air storage tank initially at 15 bar. Atmospheric pressure is 1 bar, Cp = 7R/2. Provide an estimate by assuming reversibility.   (a) Calculate the work done on the atmosphere. Does the reversibility approximation over-estimate or under-estimate the actual work? (b) A detonation of 1 kg of TNT releases about 4.5 MJ of work. Calculate the equivalent mass of TNT that performs the same work as in part (a).