Is Otto cycle reversible or irreversible?

Otto cycle is the ideal cycle for spark- ignition reciprocating engines. Germany. Can be executed in two or four strokes. All the processes are internally reversible.

Why is the Otto cycle not reversible?

All real cycles, including the Otto, are irreversible. The main reason is all real cycle are not composed of quasi-static processes, meaning not composed of processes that are carried out so slowly as to appear to be static (not moving), which would make them impractical.

What is the difference between internal & external reversibility?

An irreversibility is a factor which causes a process to be irreversible. A process is internally reversible if no irreversibilities occur within the boundaries of the system during the process. A process is externally reversible if no irreversibilities occur outside the boundaries of the system during the process.

Which cycle consist of two reversible isotherms and two reversible isobars?

Two reversible isotherms (isothermal process) and two reversible isobars (isobaric process). Stirling cycle: A Stirling cycle consists of two reversible isothermal and two reversible constant volume (isochoric) processes.

Is the Otto cycle a closed system?

The air standard Otto cycle is modeled as a closed system with a fixed air/fuel mass, and uses the following process assumptions: 1-2 Compression which is reversible and adiabatic. 3-4 Expansion which is reversible and adiabatic. 4-1 Heat rejection to cylinder walls.

What is a reversible cycle?

In a reversible cycle, a cyclical reversible process, the system and its surroundings will be returned to their original states if one half cycle is followed by the other half cycle.

Which statement is correct of dual cycle?

Explanation: None. Explanation: Another name for Dual cycle is a mixed cycle. Explanation: Since, Dual Cycle is a combination of Otto cycle and Diesel cycle, so in Dual cycle, generally heat addition takes place first at constant volume then at constant pressure.

Is Cycle a closed system?

It is considered to be a closed system because the amount of water available on the planet remains the same. As it cycles from vapour to liquid to solid, we might perceive that sometimes there is more water and sometimes less.