This document contains attendance and quiz scores for several students in a class on agricultural power and internal combustion engines. It includes a table listing each student's name, total attendance and absences, and their score on a previous quiz. There is also a short quiz on definitions and concepts related to engines, including defining an engine, the two types of heat engines, conditions for maximum efficiency in an internal combustion engine, identifying engine types based on cylinder position and number, and identifying engine parts. The document concludes with the answers to the short quiz.
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An introduction to the workings of a four stroke engine including parts and their processes, the four strokes, compression ratio and displacement, torque and power, DOHC, SOHC and OHV valve set ups, turbochargers and superchargers
FellowBuddy.com is an innovative platform that brings students together to share notes, exam papers, study guides, project reports and presentation for upcoming exams.
We connect Students who have an understanding of course material with Students who need help.
Benefits:-
# Students can catch up on notes they missed because of an absence.
# Underachievers can find peer developed notes that break down lecture and study material in a way that they can understand
# Students can earn better grades, save time and study effectively
Our Vision & Mission – Simplifying Students Life
Our Belief – “The great breakthrough in your life comes when you realize it, that you can learn anything you need to learn; to accomplish any goal that you have set for yourself. This means there are no limits on what you can be, have or do.”
Like Us - https://www.facebook.com/FellowBuddycom
An introduction to the workings of a four stroke engine including parts and their processes, the four strokes, compression ratio and displacement, torque and power, DOHC, SOHC and OHV valve set ups, turbochargers and superchargers
This slide show accompanies the learner guide "Mechanical Technology Grade 10" by Charles Goodwin, Andre Lategan & Daniel Meyer, published by Future Managers Pty Ltd. For more information visit our website www.futuremanagers.net
This slide show accompanies the learner guide "Mechanical Technology Grade 10" by Charles Goodwin, Andre Lategan & Daniel Meyer, published by Future Managers Pty Ltd. For more information visit our website www.futuremanagers.net
Er. Uttam Raj Timilsina(MSc.Engineering,IIT Roorkee)
Professor of Agricultural Engineering,Agriculture and Forestry University (AFU), Rampur, Chitwan, Nepal
uttamrajtimilsina@gmail.com
*All Right Reserved**
Uploaded and Shared by AgriYouthNepal
Internal Combustion Engines:- Heat Engines, Classification of heat engines, Construction and principle of IC Engines, Two stroke and Four stroke engine cycle.
Course in Pune University Mechanical Engineering ppt based on Engineering Fundamentals
of the
Internal Combustion Engine
Willard W. Pulkrabek
University of Wisconsin-· .. Platteville
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
5. Short Quiz (50 pts)
1) Define Engine (10)
2) What are the two types of Heat Engine (4)
3) Enumerate the Conditions for ICE to achieve maximum
efficiency as stated in Beau de Rochas Principle (10)
9. Answers
Define Engine.
An engine is a mechanical device used to
convert the heat energy of fuel produced
by combustion into mechanical energy
Two types of engine
External Combustion Engine
● Internal Combustion Engine
●
10. Answers
Define Engine.
An engine is a mechanical device used to
convert the heat energy of fuel produced
by combustion into mechanical energy
Two types of engine
External Combustion Engine
● Internal Combustion Engine
●
11. Answers
Conditions for ICE to achieve maximum efficiency:
1.
The largest possible cylinder volume with the
minimum boundary surface
2.
The largest possible working speed
3.
The greatest possible expansion ratio
4.
The greatest possible pressure at the beginning of
expansion
12. Answers
Position and Number of cylinders of reciprocating engines
Single cylinder
In-line
V-engine
Opposed cylinder engine
Opposed piston engine
W-engine
Radial engine
14. LAWS OF THERMODYNAMICS
1ST LAW OF THERMODYNAMICS
•
•
Law of the conversion of energy
States that “When heat energy is transformed into
mechanical energy, the work done is equivalent to
the quantity of heat involved.”
2nd LAW OF THERMODYNAMICS
•
States that “Heat will, of itself pass from a hot to a
cold substance, but external work is required to
transfer heat from a cold substance to a hot
substance.”
15. 2 ways in which combustion takes
place in ICE
1.
2.
By rapid explosion of mixture within
cylinder when it is ignited by a spark
(constant-volume process)
By relatively slow burning as the fuel is
injected into highly compressed, heated
air (constant –pressure process)
16. ICE PRINCIPLES
ASSUMPTIONS:
•
Air pressure during intake stroke (AB) is atmospheric
•
Compression and expansion are adiabatic process
•
Specific heat remains constant through out the cycle
18. 4-STROKE CYCLE PRINCIPLES
1.
Intake Stroke
•.
•.
•.
Begins with the piston moving down
Intake valve opens and a fuel mixture
(in SI) or air alone (in CI) enters the
cylinder
At the completion of this stroke, the
piston is at the bottom of the
cylinder and both valves are closed.
19. 4-STROKE CYCLE PRINCIPLES
2. Compression Stroke
➢
➢
➢
When the piston reaches at the bottom
of the cylinder on the intake stroke it
starts upward
Both valves are closed
At the top of this stroke, the fuel
mixture is compressed tightly
20. 4-STROKE CYCLE PRINCIPLES
3.
4.
Power Stroke
•.
A spark from the spark plug ignites the mixture
•.
Results to rapid expansion of the burning mixture
•.
Piston is pushed downward
•.
Still, both valves are tightly closed
Exhaust Stroke
•.
When the piston reaches the bottom, it starts moving
upward
•.
As the piston moves up, the exhaust valve opens and
the exhaust fumes are pushed out of the cylinder
•.
Exhaust stroke is completed with the piston at TDC
•.
Cycle is repeated
21. 2-STROKE CYCLE PRINCIPLES
Intake & Exhaust Strokes
ü
Uncovers the intake and exhaust ports as the
piston nears the bottom of its stroke
ü
Because air-fuel mixture (SI) or air (CI) in the
crankcase is under pressure, it rushes through
a passage to the intake port and enters the
cylinder
ü
This incoming fuel mixture (SI) or air (CI)
pushes the exhaust gases out of the cylinder
ü
Therefore, intake and exhaust functions occur
with very little movement of the piston
22. 2-STROKE CYCLE PRINCIPLES
•
Compression Stroke
ü
ü
ü
the cylinder now is filled with the fuel
mixture (SI) or air (CI)
Pistons moves upward, closes the
intake and exhaust ports and
compresses the fuel mixture
At the same time, new supply of air
and fuel rushes in the crankcase
23. 2-STROKE CYCLE PRINCIPLES
•
Power Stroke
ü
At or near TDC, the spark plug fires the mixture
(SI) or fuel is injection into the cylinder (CI)
ü
The burning and expanding gases drive the piston
downward
ü
This same downward movement puts pressure on
the new air-fuel mixture in the crankcase pushing
it into the cylinder (which in turn pushes the
exhaust gases out of the cylinder )
ü
Thus, the engine completes its cycle of intake,
compression, power and exhaust with only two
strokes of the piston.
26. ADVANTAGE OF 2-STROKE
OVER 4-STROKE
Lighter weight (no mechanical
valves, eliminating the camshaft to
operate the valves)
Lubricating oil is mixed with the fuel
and there is no sump to hold engine
oil allowing engine to operate in any
position even upside down.
27. THEORY OF OPERATION
•
•
•
•
•
The function of all internal combustion engines is to
convert fuel (chemical energy) to power.
Accomplished by burning a fuel in a closed chamber
and using the increase in temperature within the
closed chamber to cause a rise in pressure
Pressure produces a force on the head of the piston
causing it to move
The linear movement of the piston is converted to
rotary motion (at the crankshaft)
Rotary motion is more useful than linear movement
28. EIGHT (8) REQUIREMENTS FOR
OPERATION
1) Air (oxygen) is drawn into the engine
cylinder.
2) A quantity of fuel is introduced into the
engine.
3) The air and the fuel are mixed.
4) The fuel–air mixture is compressed.
29. EIGHT (8) REQUIREMENTS FOR
OPERATION
5) The fuel–air mixture is ignited by the spark plug in
gasoline engines or by the heat of compression in
diesel engines.
6) The burning of the fuel–air mixture causes a rapid
pressure increase in the cylinder, which acts against
the piston, producing a force on the piston.
7) The use of a connecting rod and a crankshaft converts
the linear movement of the piston to rotary motion.
8) The force on the piston is converted to torque on the
crankshaft.