What is TS diagram in Otto cycle?

The temperature-entropy diagram (Ts diagram) in which the thermodynamic state is specified by a point on a graph with specific entropy (s) as the horizontal axis and absolute temperature (T) as the vertical axis.

What are the 4 stages of the Otto cycle?

The four-stroke Otto cycle is made up of the following four internally reversible processes: 1–2, isentropic compression; 2–3, constant-volume heat addition; 3–4, isentropic expansion; and 4–1, constant-volume heat rejection.

How is Otto cycle calculated?

We can also evaluate the work W by the difference of the heat into the gas minus the heat rejected by the gas. Knowing the temperatures, this is an easier calculation. The work times the rate of the cycle (cycles per second cps) is equal to the power P produced by the engine.

What is the formula for compression ratio of the Otto cycle?

Thermal Efficiency for Otto Cycle The air-standard Otto cycle thermal efficiency is a function of compression ratio and κ = cp/cv. It is a very useful conclusion because it is desirable to achieve a high compression ratio to extract more mechanical energy from a given mass of the air-fuel mixture.

How many strokes are there in Otto cycle?

four
The Otto Cycle involves four engine strokes. A stroke is defined as a process in which the cylinder’s piston moves up to the top of the engine or down to the bottom of the engine.

What is 4 stroke diesel engine?

The four stroke Diesel engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning a crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction.

How many strokes are there in Otto Cycle?

Who invented petrol engine?

Nicolaus Otto
Petrol engine/Inventors
The first practical petrol engine was built in 1876 in Germany by Nicolaus August Otto, although there had been earlier attempts by Étienne Lenoir, Siegfried Marcus, Julius Hock, and George Brayton.

What is the full form of SI engine?

A spark-ignition engine (SI engine) is an internal combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.