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(a) Describe with the aid of diagrams the operational sequence of four stroke spark ignition engines (P8) (b) Explain the mechanical efficiency for ideal otto cycle of two and four stroke engines (P9) (c) What is the difference between four and two stroke engines?

(a) Describe with the aid of diagrams the operational sequence of four stroke spark ignition engines (P8) (b) Explain the mechanical efficiency for ideal otto cycle of two and four stroke engines (P9) (c) What is the difference between four and two stroke engines?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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(a) Describe with the aid of diagrams the operational sequence of four stroke spark ignition engines (P8) (b) Explain the mechanical efficiency for ideal otto cycle of two and four stroke engines (P9) (c) What is the difference between four and two stroke engines? (d) Explain the relationship between thermal efficiency (n) and compression ratio (r). (e) Why are high compression ratios not used in spark ignition engines? (f) Determine the pressure and temperature at the end of the heat addition process (g) Determine the net-work output, the thermal efficiency, and the mean effective pressure for the cycle.
Transcribed Image Text:(a) Describe with the aid of diagrams the operational sequence of four stroke spark ignition engines (P8) (b) Explain the mechanical efficiency for ideal otto cycle of two and four stroke engines (P9) (c) What is the difference between four and two stroke engines? (d) Explain the relationship between thermal efficiency (n) and compression ratio (r). (e) Why are high compression ratios not used in spark ignition engines? (f) Determine the pressure and temperature at the end of the heat addition process (g) Determine the net-work output, the thermal efficiency, and the mean effective pressure for the cycle.
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