Otto Cycle Air Standard Basis
The Otto cycle is a thermodynamic cycle used to model the processes occurring in a common type of internal combustion engine. It's based on ideal conditions and simplifies the actual engine operation.
Key characteristics of the Otto cycle:
- It comprises four distinct phases: isentropic compression, constant volume heat addition, isentropic expansion, and constant volume heat rejection.
- This theoretical cycle accurately represents the functioning of an engine where the fuel-air mixture is ignited by a spark plug.
- Therefore, the Otto cycle is defined as the air standard cycle for the spark ignition (SI) engine.
Conversely, engines using compression to ignite fuel (CI engines) are typically modeled using the Diesel cycle.
The correct identification of the Otto cycle relates it directly to the SI engine.
Important Questions from Otto Cycle
A petrol engine theoretically operates on
In an Otto cycle, how does heat addition take place?
In actual four-stroke petrol engine ignition takes place when the piston approaches.
Otto cycle is also known as
The efficiency of diesel cycle approaches to Otto cycle efficiency when
