The document provides an overview of diesel engine operation, including key components and processes. It discusses how diesel engines work via compression ignition rather than spark ignition like gasoline engines. The four main components of the diesel engine cycle are the intake, compression, combustion, and exhaust strokes. Key differences between diesel and gasoline include higher compression ratios and direct fuel injection in diesel engines. The document also covers diesel fuel properties, injection systems, turbocharging, and exhaust emissions reduction technologies.
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
Supercritial Fuel Injection System is a fuel injection system that can be used to reduce emissions and increase efficiency up to 50 - 70 % in an automobile.
Internal combustion engine for Elements of Mechanical Engineering subject 1st...SiddeshKumar N M
Engine
Types of Engine
Parts of IC Engine
Working Principle of Four Stroke Petrol Engine
Working Principle of Four Stroke Diesel engine
Comparisons Between Petrol and Diesel Engines
Working Principle of Two Stroke Petrol Engine
Comparisons of Two Stroke and Four Stroke Engines
Classification of IC Engines
Power Calculation Terminologies
Indicated power (IP)
Brake power (BP)
Indicated thermal efficiency (Ƞith)
Brake thermal efficiency(Ƞbth)
Mechanical
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.
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# 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
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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
Supercritial Fuel Injection System is a fuel injection system that can be used to reduce emissions and increase efficiency up to 50 - 70 % in an automobile.
Internal combustion engine for Elements of Mechanical Engineering subject 1st...SiddeshKumar N M
Engine
Types of Engine
Parts of IC Engine
Working Principle of Four Stroke Petrol Engine
Working Principle of Four Stroke Diesel engine
Comparisons Between Petrol and Diesel Engines
Working Principle of Two Stroke Petrol Engine
Comparisons of Two Stroke and Four Stroke Engines
Classification of IC Engines
Power Calculation Terminologies
Indicated power (IP)
Brake power (BP)
Indicated thermal efficiency (Ƞith)
Brake thermal efficiency(Ƞbth)
Mechanical
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
Automobile engineering is a branch study of engineering which teaches manufacturing, designing, mechanical mechanisms as well as operations of automobiles. It is an introduction to vehicle engineering which deals with motorcycles, cars, buses, trucks, etc.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Understanding the Diesel Engine
1. Overview of the Diesel Engine Operation National Biodiesel Board Technician Outreach Program
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5. The diesel engine: first patented in 1892 The Diesel engine was initially Intended to run on coal dust. Rudolph Diesel (1858 – 1913) Diesel demonstrated his engine at the Exhibition Fair in Paris, France in 1898. This engine was fueled by peanut oil - the "original" biodiesel.
6. The first Diesel race car placed 13 th in the Indianapolis 500 because it never stopped to refuel…
7. The American public looked to diesel fuel which was more efficient and economical and they began buying diesel-powered automobiles. Diesel vehicle popularity In the 70s due to Oil crisis This surge of diesel sales in American ended in the 1980's.
16. Newer design- The fuel injection systems on the John Deere PowerTech Plus engines operate at 29,000 psi Photos compliments of the National Alternative Fuel Training Consortium
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21. A diesel fuel injection system employing a common pressure accumulator, called the rail, which is mounted along the engine block. The rail is fed by a high pressure fuel delivery pump. The injectors, which are fed from the common rail, are activated by solenoid valves. The solenoid valves and the fuel pump are all electronically controlled. Also known as CRD, Common Rail Diesel Technology Common Rail Injection
22. Common Rail Diesel Injection pressures are much higher: 24,000- 36,000 PSI In the common rail injection system the injection pressure is independent from engine speed and load. Therefore, the injection parameters can be freely controlled. Usually a pilot injection is introduced, which allows for reductions in engine noise and NOx emissions. This system operates at 27,500 psi (1900 BAR). The injectors use a needle-and-seat-type valve to control fuel flow, and fuel pressure is fed to both the top and bottom of the needle valve. By bleeding some of the pressure off the top, the pressure on the bottom will push the needle off its seat and fuel will flow through the nozzle holes.
Heat engine Greg Pahl’s book gives a good overview of historical account of diesel engine development
Submitted for patent in 1894 Engine exploded and almost killed Rudolf First successful diesel engine operation in 1897 Patent awarded in 1898
Take care with some newer glow plugs not to touch the ceramic electrode, Oil residue may can premature damage Don’t test new CDI 2.8l glow plugs with 12 volts- they are 7 volts
Bosch injection pump & Yanmar injection pumps An Injection Pump is the device that pumps fuel into the cylinders of a diesel engine or less typically, a gasoline engine. Traditionally, the pump is driven indirectly from the crankshaft by gears, ch ains or a toothed belt (often the timing belt ) that also drives the crankshaft on overhead-cam engines (OHC). It rotates at half crankshaft speed in a conventional four-stroke engine. Its timing is such that the fuel is injected only very slightly before top dead-centre of that cylinder's compression stroke. It is also common for the pump belt on gasoline engines to be driven directly from the camshaft. Because of the need for positive injection into a very high-pressure environment, the pump develops great pressure - typically 15,000 PSI or more on newer systems. This is a good reason to take great care when working on diesel systems; escaping fuel at this sort of pressure can easily penetrate skin and clothes, and be injected into body tissues with serious consequences. Earlier diesel pumps used an in-line layout with a series of cam-operated injection cylinders in a line, rather like a miniature inline engine. The pistons have a constant stroke volume, and injection volume (ie, throttling) is controlled by rotating the cylinders against a cut-off port that aligns with a helical slot in the cylinder. When all the cylinders are rotated at once, they simultaneously vary their injection volume to produce more or less power from the engine. Inline pumps still find favour on large multi-cylinder engines such as those on trucks, construction plant, static engines and agricultural vehicles. For use on cars and light trucks, the rotary pump or distributor pump was developed. It uses a single injection cylinder driven from an axial cam plate, which injects into the individual fuel lines via a rotary distribution valve. Later incarnations such as the Bosch VE pump vary the injection t iming with crank speed to allow greater power at high crank speeds, and smoother, more economical running at slower revs. Some VE variants have a pressure-based system that allows the injection volume to increase over normal to allow a turbocharger or supercharger equipped e ngine to dev elop more power under boost conditions. All injection pumps incorporate a governor to cut fuel supply if the crank speed endangers the en gine - t he heavy moving parts of diesel engines do not tolerate overspeeding well, and catastrophic damage can occur if they are over-revved. Mechanical pumps are gradually being phased out in order to comply with international emissions directives, and to increase performance and economy. Alternatives include common rail diesel systems and unit direct injection systems. These all ow for higher pres sures to be developed, and for much finer control of injection volumes compared to mechanical systems.
2.8L Jeep Liberty 24,000 PSI Multi pilot fuel injection- 1 or 2 before main injection
VGTC- low speeds, movable vanes expand for additional air boost High speeds, vanes retract to limit boost
EGR cooler on 2.8L jeep liberty
Prime indicator of Diesel fuel quality * Ability to auto-ignite * Inverse of gasoline’s octane More saturates - increases cetane # soy (48-52) yellow grease (60-75)
Measured by viscometer * Motor oil analogy* Low viscosity can affect leak down on inj pump plungers -> power loss Higher viscosity can affect insuff. Fuel supply -> power loss
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