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ME 5800- Syllabus

by: Nisarg Bettaswamy

ME 5800- Syllabus ME 5800

Nisarg Bettaswamy
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About this Document

Introduction to Topics covered
Combustion Engines
Usman Asad
Class Notes




Popular in Combustion Engines

Popular in Mechanical Engineering

This 8 page Class Notes was uploaded by Nisarg Bettaswamy on Thursday January 14, 2016. The Class Notes belongs to ME 5800 at Wayne State University taught by Usman Asad in Winter 2016. Since its upload, it has received 148 views. For similar materials see Combustion Engines in Mechanical Engineering at Wayne State University.


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Date Created: 01/14/16
The course outline of topics: Exam grades: Quizzes: Un-announced closed book & closed notes quizzes in class Homework: Problems and numerical cycle analysis assignments (submit hard copies) Project: Engine simulation modeling using GT Power software (submit hard copies) Exams: 3 Exams (2 Midterms, 1 Final) Unless otherwise noted, all tests are in-class, Exam # 1 is closed book/closed notes, Exam # 2 is open-book and open-notes, Exam # 3 has 2 parts: Part 1 is closed notes and closed book; Part 2 is open notes and open book Grading: Quizzes (10%), HW (15%), Project (15%), Exams (15%, 15%, 30%) Text book referred by professor Usman: Heywood, J., Internal Combustion Engine Fundamentals, McGraw-Hill, 1988. (Recommended)  Stone, R., Introduction to Internal Combustion Engines, 4th Edition, SAE International, 2012. (Reference)  Obert, E., Internal Combustion Engines and Air Pollution, Harper & Row Publishers, 1973 (reference)  Stone, R., “Introduction to Internal Combustion Engines, 3rd ed., 1999, ISBN0768004950  Stone, R., “Introduction to Internal Combustion Engines, 2nd ed., 1993, ISBN1560913908  Pulkrabek, W., “Engineering Fundamentals of the Internal Combustion Engine”, 2nd ed., 2004, ISBN0131405705 Lecture 1: Introduction to combustion engines: Syllabus was discussed in the previous document and how the exam outline was. This session will be all about introduction to comustion engines, types of engines, emissions, and few concepts which need some thinking on it. ENVIRONMENT, AIR QUALITY VS ENERGY DEMAND:The effects resulting due to harmful emissions from automotives, deforestation and so on. • Acid Rain • Smog - Nitric Oxides • Particulates PM2.5 & PM10 • Ozone Depletion • Global Warming –CO2. Vehicular Emissions: The following are harmful emissions which affect the world existence and living, they are •Carbon dioxide (CO2) – Every litre of gasoline that is burned produces about 2.4 kg of CO2 •Nitrogen oxides (NOx) •Hydrocarbons (HC) •Sulphur dioxide (SO2) •Particulate matter (PM2.5 & PM10) •Ozone (O3) 1] Carbon dioxide Sources: The combustion of fossil fuels (oil, gasoline, coal, etc.); deforestation. Impacts: Responsible for over 60% of the enhanced greenhouse effect, causing climate change. 2] Nitrogen oxides (NOx) Sources: Residential and agricultural fertilizers; high temperature combustion of fossil fuels; incinerators. Impacts: NOx contribute to formation of ground level ozone (smog), impair visibility, and have health consequences 3] Hydrocarbons (HC) Sources: Incomplete combustion of fossil fuel. Impacts: Reacts with NOx and sunlight to form photochemical pollution (smog), mainly ground-level ozone. 4] Sulfur dioxide (SO2) Sources: Combustion of fossil fuels, especially in locomotives, large ships, and construction equipment; mineral extraction from ore, gasoline from oil. Impacts: Forms acid rain; forms atmospheric particles, reducing visibility and aggravating existing heart and lung diseases. 5] Particulate matter (PM10) Sources: Combustion of fossil fuels, forest and stubble fires, mechanical wear of vehicles parts (brake lining, tires, etc.). Impacts: Particles enter deeply into lungs, adhere to tissue; aggravates asthma, causes respiratory illness,causes premature death. 6] Ozone (O3) Sources:Ozone is not produced directly by vehicles. Ground-level ozone is produced when nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs), such as xylene, react in the atmosphere in the presence of sunlight. NOx and VOCs are called ozone precursors. Impacts: Respiratory illness and distress, ozone makes people more sensitive to allergens, which in turn trigger asthma attacks Reference : For Information on Global warming year wise general estimation, Green house gas emissions of various countries the graphs can be looked in the below references. Benefits/Climate-Change.aspx LARGEST DIESEL ENGINE • Configuration: Turbocharged two-stroke diesel straight engine, 6 to 14 cylinders • Bore: 960 mm Stroke: 2,500 mm • Displacement: 1,820 litres per cylinder • Engine speed: 22–102 RPM • Mean effective pressure: 1.96 MPa @ full load, 1.37 MPa @ maximum efficiency (85% load) • Specific fuel consumption: 170 g/(kW·h), 158 g/(kWh) at maximum economy • Power: Up to 5,720 kW per cylinder, 34,320– 80,080 kW (46,680–108,920 BHP) total • Torque: Up to 7,603,850 newton metres (5,608,310 lbf·ft) @ 102 rpm • Mass of fuel injected per cylinder per cycle ~160 g (about 6.5 ounces) @ full load • Crankshaft weight: 300 tons BASIC ENGINE TYPES 1] Fuel type Petrol / Gasoline Diesel 2] Number of strokes per cycle 2 stroke engine 4 stroke engine 3] Air charging Naturally aspirated Supercharged Turbocharged Crankcase compressed 4] Ignition Combustion type Spark Ignition Compression Ignition 5] Cylinder arrangement Single cylinder In-line, straight V (60 to 90°) Horizontally opposed Cylinder Piston Radial 6] Basic design Reciprocating Rotary 7] Fuel delivery Carburetor Port injection (single/multi) Direct injection 8] Cooling Air cooled Liquid (water) cooled Turbocharger related information: http://www.formula1- INTERNAL COMBUSTION ENGINE • The internal combustion (IC) engine is a heat engine that converts chemical energy contained in a fuel into mechanical energy, usually made available on a rotating output shaft. Historical Development: • 1824 - Thermodynamic theory of idealized heat engines • Carnot Cycle • 1859 - Crude Oil discovered • 1860 - Lenoir engine (6 hp,  = 5%), first IC engine • 1867 - Otto-Langen engine ( = 11%, 90 rpm max) • 1876 - Otto four stroke “spark ignition” engine ( = 14%, 160 rpm max) • 1882 - Atkinson Cycle Engine Two stroke engine • 1888 - Pneumatic rubber tire (Dunlap) • 1892 - Diesel four stroke “compression ignition” engine • 1896 - Benz Boxer Engine (horizontally opposed, flat) • 1954 - Wenkel “rotary” engine IC engine : Coil on plug Cam shaft Exhaust Pisto valve Intake valve Connecting Timing Chain Crank shaft Crank Engine working process: 4 Stroke engine. Four stroke engine animated : 2 stroke advantages and disadvantages : engines-overview-advantages-disadvantages/ Differences between 2 stroke and 4 stroke engine: stroke-engines.html


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