An ideal cycle based on the concept of combination of two heat addition processes, one at constant volume and the other at constant pressure, is called

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ESE Mechanical 2020 Official Paper
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  1. Otto cycle 
  2. Dual cycle 
  3. Diesel cycle 
  4. Carnot cycle

Answer (Detailed Solution Below)

Option 2 : Dual cycle 
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Concept:

Dual cycle is a thermodynamic cycle that combines the Otto cycle and the Diesel cycle. In this cycle the heat addition occurs partly at constant volume and partly at constant pressure.

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Different processes in the dual cycles are given below:

Process 1-2: Reversible adiabatic compression.

Process 2-3: Constant volume heat addition.

Process 3-4: Constant pressure heat addition.

Process 4-5: Reversible adiabatic expansion.

Process 5-1: Constant volume heat rejection.

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