Exam Question
(a) Draw the indicator diagrams of a 2-stroke main engine, showing each step of the 2-stroke cycle (6)
(b) How is Power of a 2-stroke main engine with 6 units is calculated with the help of indicator diagrams (10)
Class 4 (4th Engineer)
MEKM
📅 Feb 2023
Reference Answer
### (a) Indicator Diagram of a 2-Stroke Main Engine
An indicator diagram, also known as a Pressure-Volume (P-V) diagram, is a graphical representation of the pressure changes inside an engine cylinder with respect to the cylinder volume (or piston stroke) throughout one complete cycle. The area enclosed by the diagram loop represents the work done by the gases on the piston during that cycle.
**(A diagram corresponding to the search query should be drawn here)**
The key stages of the 2-stroke cycle as represented on the indicator diagram are as follows:
An indicator diagram, also known as a Pressure-Volume (P-V) diagram, is a graphical representation of the pressure changes inside an engine cylinder with respect to the cylinder volume (or piston stroke) throughout one complete cycle. The area enclosed by the diagram loop represents the work done by the gases on the piston during that cycle.
**(A diagram corresponding to the search query should be drawn here)**
The key stages of the 2-stroke cycle as represented on the indicator diagram are as follows:
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