2. (a) Define the physical processes which comprise the four stroke cycle AND Define the thermodynamic processes of the air stan- dard cycle which comprise the Otto cycle.
2. (a) Define the physical processes which comprise the four stroke cycle AND Define the thermodynamic processes of the air stan- dard cycle which comprise the Otto cycle.
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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please send handwritten solution Q2 part a
![2. (a) Define the physical processes which comprise the four stroke
cycle AND Define the thermodynamic processes of the air stan-
dard cycle which comprise the Otto cycle.
(b) A diesel engine has a compression ratio of 18 and a cut off ratio
of 2.4. At the beginning of the compression process, the air in
the cylinder is at 100kPa and 27°C. Assume the gas constant,
R = 287J/kgK, the specific heat at constant volume, Cy
718J/kgk, and the ratio of specific heats,= 1.4. Calculate;
i The temperature after the heat addition process
=
ii The maximum pressure in the cylinder
iii The work done by the cycle per unit mass
iv The thermal efficiency of the engine
v The mean effective pressure
(c) Describe, using fewer than 50 words each what is meant by the
following terms describing diesel engine combustion;
i Delay Period.
ii Uncontrolled burning.
iii Controlled burning.
iv Cut off ratio.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe3b36e93-6510-484b-8b39-13b1503b5605%2Fbd75d6db-176a-4920-8327-ebb803eb0a3c%2Fp9i1kxf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. (a) Define the physical processes which comprise the four stroke
cycle AND Define the thermodynamic processes of the air stan-
dard cycle which comprise the Otto cycle.
(b) A diesel engine has a compression ratio of 18 and a cut off ratio
of 2.4. At the beginning of the compression process, the air in
the cylinder is at 100kPa and 27°C. Assume the gas constant,
R = 287J/kgK, the specific heat at constant volume, Cy
718J/kgk, and the ratio of specific heats,= 1.4. Calculate;
i The temperature after the heat addition process
=
ii The maximum pressure in the cylinder
iii The work done by the cycle per unit mass
iv The thermal efficiency of the engine
v The mean effective pressure
(c) Describe, using fewer than 50 words each what is meant by the
following terms describing diesel engine combustion;
i Delay Period.
ii Uncontrolled burning.
iii Controlled burning.
iv Cut off ratio.
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