Engineering Learning Part 01 (Otto Cycle)

Today we will discuss about Otto cycle.

Otto Cycle: The Otto cycle is a set of processes used by spark ignition internal combustion engines (2-stroke or 4-stroke cycles). 

Otto Cycle is named after Nikolus Otto (Nikolaus Otto a German Scientist developed Otto Cycle (Idealized Thermodynamic Cycle) for Internal Combustion Engine. Nikolus was born in 1832 and died 1891).

 

The Otto cycle is constructed from:

1) Top and bottom of the loop: a pair of quasi-parallel and ISENTROPIC PROCESSES (Friction less, adiabatic reversible).

2) Left and right sides of the loop: a pair of parallel ISOCHORIC PROCESSES (constant volume).

The Cycle Process-

1-2: Compression Stroke. Adiabatic Compression of air/Fuel Mixture in the cylinder. Isentropic Compression.

2-3: Ignition of the compressed air/fuel mixture at the top of the compression stroke while the volume is essentially constant. Constant Volume Heating.

3-4: Expansion (Power Stroke). Adiabatic Expansion of the hot gases in the cylinder. Isentropic Expansion.

4-1: Exhaust stroke. Ejection of the spent, hot gases. Constant volume cooling.

What is Isentropic Processes?

In thermodynamics, an isentropic process is an idealized thermodynamic process that is both adiabatic and reversible. The work transfers of the system are friction less, and there is no transfer of heat or matter.

What is an Isochoric process?

An isochoric process, also called a constant-volume process, an iso volumetric process, or an isometric process, is a thermodynamic process during which the volume of the closed system undergoing such a process remains constant.

Some Links related to Otto Cycle Mathematical Problems with answers-

http://nptel.ac.in/courses/101101001/downloads/lec20-problem-solution.pdf

https://www.youtube.com/watch?v=7IBVSM2VXCQ

https://www.ohio.edu/mechanical/thermo/Intro/Chapt.1_6/Chapter3d.html

Questions Bank - 01

GTCL Questions for Mechanical Engineering 2018

MBA program at Army Institute of Business Administration of Bangladesh, Shylet

An affiliated Institute of Bangladesh University of Professionals (BUP) Army Institute of Business Administration (AIBA), Sylhet was established on 15 January 2015 at Jalalabad Cantonment, Sylhet. It follows BUP curriculum and is committed to global standard as reflected in their academic policies and pedagogy. With its own unique features, AIBA, Sylhet is temporarily set up at the campus of Jalalabad Cantonment Public School and College (JCPSC), Sylhet. The institute offers a tranquil, pollution-free and secured campus life with a non-political and congenial academic atmosphere. The site for its permanent campus has been earmarked at the new location of upcoming Sylhet Cantonment beside Sylhet – Tamabil Bipass.MBA program for the 2017-18 session application last date : 25 April 2018. Classes will be started from 11 May 2018.

KUET 3rd Convocation 2018

3rd Convocation of Khulna University of Engineering & Technology (KUET) will be held on 4th April 2018. The Honorable President of the People's Republic of Bangladesh and the Chancellor of the University will preside over the convocation. After the convocation a program will be held at the university premises. More information about 3rd Convocation : 3rd Convocation KUET 2018

KUET a prestigious Engineering institution in South Asia is located at Khulna, Bangladesh. Every year hundreds of student passed from this institution. The graduate of this university is working with reputation in home and abroad. There is rarely session gap in this university compare with other public universities in Bangladesh. Before turned to university it was named as Bangladesh Institute of Technology (BIT), Khulna. Like other three Engineering Universities (CUET, RUET,DUET) in 2001 it upgraded to University. Electrical, Mechanical, Civil, Architecture , Urban and Rural Planning, etc are the main departments of this university. Every year they are arranging different national and international seminars, conferences and the students of this university attend in different national and international competitions. The admission procedure is almost same like other Public Engineering University. Every students have to attend a written admission test for admission.