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Otto cycle: The Otto cycle is the thermodynamic cycle that internal combustion gasoline engines go through. The figures illustrate the ideal version of the four-stroke process with cylinder/piston diagrams (top) and a p-V graph (bottom). A real Otto cycle would not have such sharp transitions on the p-V graph, but would look much curvier.
An ideal Otto cycle has a compression ratio of 7. At the beginning of the compression process, P1=90kPa,T1=2T∘C and V1= 0.004 m3. The maximum cycle temperature is 1117∘C. For each repetition of the cycle, calculate the heat rejection and the net work production. Also, calculate the thermal efficiency and mean effective pressure for this cycle.
1. Analyzing the Otto Cycle: The temperature at the beginning of the compression process of an air-standard Otto cycle with a compression ratio of 8 is 25 °C, the pressure is 1 atm, and the cylinder volume is 500 cc. The maximum temperature during the cycle is 1700 °C. Determine (a) the temperature and pressure at the end of each process of ...
Question: The cycle involved in the operation of an internal combustion engine is called the Otto cycle. Air can be considered to be the working substance and can be assumed to be a perfect gas. The cycle consists of the following steps:I. Reversible adiabatic compression from A to B.II. Reversible constant-volume pressure increase from B to ...
The Otto cycle is the four-stroke cycle in internal combustion engines in cars, lorries, and electrical generators. Show that the efficiency of the standard Otto cycle (shown in Fig. 13.12) is 1−r1−γ, where r = V1/V2 is the compression ratio.
Otto Cycle Diesel Cycle QUESTION 6 An Otto cycle operates on the air-standard. Assuming that specific heats are evaluated at 300 K, determine the thermal efficiency if the compression ratio is 9 . Report your answer as a percentage (number between 0 and 100) and to one decimal place
THE OTTO CYCLE: (Gioradano, problem 16.61) The Otto cycle is shown in the accompanying figure, and is the idealized cycle for an internal combustion engine. Consider an Otto cycle that operates on 0.070 mole of ideal gas be- tween volumes V₁= V₁ V₂-0.20 L and V₁ V3 V4-1.60 L. PART A: In which parts of the cycle (1-2, 23, 34, 41) is work ...
Consider a cold air-standard Otto cycle. Operating data at principal states in the cycle are given in the table below. The states are numbered as in Fig. 9.3. The heat rejection from the cycle is 86 Btu per lb of air. Assuming Cv=0.172 Btu/lb R, Determin. Write possible Assumptions no less than three assumptions. 2- Draw clear schematic for ...
Start by understanding that the Otto cycle consists of four stages, each represented on both a P-V (pressure-volume) diagram and a T-S (temperature-entropy) diagram, and begin discussing the first stage, "Intake Stroke", which starts with a low pressure, large volume state (State 1), and the piston's downward movement creating a vacuum that sucks in the fuel-air mixture increases the volume ...
Question: Problem 9.3: An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95 kPa and 27°C, and 750 kJ/kg of heat is transferred to air during the constant-volume heat-addition process.