Lecture Notes on Sub: Internal Combustion
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Engine Components and Filters: Damage Profiles, Probable Causes and Prevention
ENGINE COMPONENTS AND FILTERS: DAMAGE PROFILES, PROBABLE CAUSES AND PREVENTION Technical Information AFTERMARKET Contents 1 Introduction 5 2 General topics 6 2.1 Engine wear caused by contamination 6 2.2 Fuel flooding 8 2.3 Hydraulic lock 10 2.4 Increased oil consumption 12 3 Top of the piston and piston ring belt 14 3.1 Hole burned through the top of the piston in gasoline and diesel engines 14 3.2 Melting at the top of the piston and the top land of a gasoline engine 16 3.3 Melting at the top of the piston and the top land of a diesel engine 18 3.4 Broken piston ring lands 20 3.5 Valve impacts at the top of the piston and piston hammering at the cylinder head 22 3.6 Cracks in the top of the piston 24 4 Piston skirt 26 4.1 Piston seizure on the thrust and opposite side (piston skirt area only) 26 4.2 Piston seizure on one side of the piston skirt 27 4.3 Diagonal piston seizure next to the pin bore 28 4.4 Asymmetrical wear pattern on the piston skirt 30 4.5 Piston seizure in the lower piston skirt area only 31 4.6 Heavy wear at the piston skirt with a rough, matte surface 32 4.7 Wear marks on one side of the piston skirt 33 5 Support – piston pin bushing 34 5.1 Seizure in the pin bore 34 5.2 Cratered piston wall in the pin boss area 35 6 Piston rings 36 6.1 Piston rings with burn marks and seizure marks on the 36 piston skirt 6.2 Damage to the ring belt due to fractured piston rings 37 6.3 Heavy wear of the piston ring grooves and piston rings 38 6.4 Heavy radial wear of the piston rings 39 7 Cylinder liners 40 7.1 Pitting on the outer -
Small Engine Parts and Operation
1 Small Engine Parts and Operation INTRODUCTION The small engines used in lawn mowers, garden tractors, chain saws, and other such machines are called internal combustion engines. In an internal combustion engine, fuel is burned inside the engine to produce power. The internal combustion engine produces mechanical energy directly by burning fuel. In contrast, in an external combustion engine, fuel is burned outside the engine. A steam engine and boiler is an example of an external combustion engine. The boiler burns fuel to produce steam, and the steam is used to power the engine. An external combustion engine, therefore, gets its power indirectly from a burning fuel. In this course, you’ll only be learning about small internal combustion engines. A “small engine” is generally defined as an engine that pro- duces less than 25 horsepower. In this study unit, we’ll look at the parts of a small gasoline engine and learn how these parts contribute to overall engine operation. A small engine is a lot simpler in design and function than the larger automobile engine. However, there are still a number of parts and systems that you must know about in order to understand how a small engine works. The most important things to remember are the four stages of engine operation. Memorize these four stages well, and everything else we talk about will fall right into place. Therefore, because the four stages of operation are so important, we’ll start our discussion with a quick review of them. We’ll also talk about the parts of an engine and how they fit into the four stages of operation. -
1. the Future for Automotive Two-Stroke Engines – Part 2
N0.21 THE FUTURE FOR AUTOMOTIVE TWO-STROKE ENGINES (Part 2) CURRENT DEVELOPMENTS Synthetic-based formulation likely to be the preferred option. In the previous issue of Lube, the origins and initial development of the 2T Tendency for combustion chamber deposit formation would have required a engine were described. The earlier engines, characterised by smoky exhausts low ash or ash less lubricant. and poor specific fuel economy, will be remembered by many of the older High temperatures require strong anti-oxidancy. fraternity, as they provided motive power for many commuter lightweight motorcycles, mopeds and scooters in the prewar and postwar years. Many WET SUMP vehicle manufacturers in the UK used proprietary power units manufactured Again, no valve train therefore no requirement for e.g. ZDDP anti-wear by specialist engine manufacturers such as Villiers, who dominated the agent. market, although smaller engine suppliers included companies such as British Diluent unnecessary/undesirable. Anzani. A number of other companies, including Scott, Associated Conventional base oil plus viscosity index-improver is possible (SAE 10/30?). Motorcycles, Excelsior and latterly Ariel also designed their own engines, use Polymer deposits may favour synthetic approach. of which was restricted in the main to vehicles of their own manufacture. However, with the demise of the UK motorcycle industry, 2T engine Tendency for combustion chamber deposits requires a low ash approach. developments, which have progressed steadily during subsequent years, The conclusion was that, in spite of the substantial differences between the have been largely attributable to overseas manufacturers with assistance types of the Orbital engines described above, it may well have been possible from some UK specialist consultancy organizations such as Ricardos at to meet the requirements of both types of engine with a single lubricant, Shoreham. -
Honda Gx 390 Tech Manual
GX240 GX270 GX340 GX390 UT2/RT2 Technical Manual ©2010 American Honda Motor Co., Inc. PTR54179 All Rights Reserved GX240 • GX270 • GX340 • GX390 (UT2/RT2) Technical Manual Preface This manual covers engine selection, engine installation design and engine installation testing, so the combination of a Honda engine and your equipment will make the best possible product. Please feel free to contact your Honda Engine Distributor at any time for additional technical information or to discuss your engine application needs. All information contained in this manual is based on the latest product information available at the time of printing. We reserve the right to make changes at anytime without notice. No part of this publication may be reproduced, or transmitted, in any form or by any means, electronic, mechanical photocopying, recording or otherwise, without the prior written permission of the publisher. This includes text, figures and tables. Contents Design Features .......................................................... 2 Starting Performance ...........................................16 Emission Regulations ................................................. 2 Installation Considerations ........................................17 Recommended Power Range ..................................... 3 Maintenance Points Accessibility ........................17 Maximum Operation ............................................... 3 Dimensional Drawings ...............................................19 Continuous Operation ........................................... -
Converting an Internal Combustion Engine Vehicle to an Electric Vehicle
AC 2011-1048: CONVERTING AN INTERNAL COMBUSTION ENGINE VEHICLE TO AN ELECTRIC VEHICLE Ali Eydgahi, Eastern Michigan University Dr. Eydgahi is an Associate Dean of the College of Technology, Coordinator of PhD in Technology program, and Professor of Engineering Technology at the Eastern Michigan University. Since 1986 and prior to joining Eastern Michigan University, he has been with the State University of New York, Oak- land University, Wayne County Community College, Wayne State University, and University of Maryland Eastern Shore. Dr. Eydgahi has received a number of awards including the Dow outstanding Young Fac- ulty Award from American Society for Engineering Education in 1990, the Silver Medal for outstanding contribution from International Conference on Automation in 1995, UNESCO Short-term Fellowship in 1996, and three faculty merit awards from the State University of New York. He is a senior member of IEEE and SME, and a member of ASEE. He is currently serving as Secretary/Treasurer of the ECE Division of ASEE and has served as a regional and chapter chairman of ASEE, SME, and IEEE, as an ASEE Campus Representative, as a Faculty Advisor for National Society of Black Engineers Chapter, as a Counselor for IEEE Student Branch, and as a session chair and a member of scientific and international committees for many international conferences. Dr. Eydgahi has been an active reviewer for a number of IEEE and ASEE and other reputedly international journals and conferences. He has published more than hundred papers in refereed international and national journals and conference proceedings such as ASEE and IEEE. Mr. Edward Lee Long IV, University of Maryland, Eastern Shore Edward Lee Long IV graduated from he University of Maryland Eastern Shore in 2010, with a Bachelors of Science in Engineering. -
Combustion Turbines
Section 3. Technology Characterization – Combustion Turbines U.S. Environmental Protection Agency Combined Heat and Power Partnership March 2015 Disclaimer The information contained in this document is for information purposes only and is gathered from published industry sources. Information about costs, maintenance, operations, or any other performance criteria is by no means representative of EPA, ORNL, or ICF policies, definitions, or determinations for regulatory or compliance purposes. The September 2017 revision incorporated a new section on packaged CHP systems (Section 7). This Guide was prepared by Ken Darrow, Rick Tidball, James Wang and Anne Hampson at ICF International, with funding from the U.S. Environmental Protection Agency and the U.S. Department of Energy. Catalog of CHP Technologies ii Disclaimer Section 3. Technology Characterization – Combustion Turbines 3.1 Introduction Gas turbines have been in use for stationary electric power generation since the late 1930s. Turbines went on to revolutionize airplane propulsion in the 1940s, and since the 1990s through today, they have been a popular choice for new power generation plants in the United States. Gas turbines are available in sizes ranging from 500 kilowatts (kW) to more than 300 megawatts (MW) for both power-only generation and combined heat and power (CHP) systems. The most efficient commercial technology for utility-scale power plants is the gas turbine-steam turbine combined-cycle plant that has efficiencies of more than 60 percent (measured at lower heating value [LHV]35). Simple- cycle gas turbines used in power plants are available with efficiencies of over 40 percent (LHV). Gas turbines have long been used by utilities for peaking capacity. -
The Starting System Includes the Battery, Starter Motor, Solenoid, Ignition Switch and in Some Cases, a Starter Relay
UNIT II STARTING SYSTEM &CHARGING SYSTEM The starting system: The starting system includes the battery, starter motor, solenoid, ignition switch and in some cases, a starter relay. An inhibitor or a neutral safety switch is included in the starting system circuit to prevent the vehicle from being started while in gear. When the ignition key is turned to the start position, current flows and energizes the starter's solenoid coil. The energized coil becomes an electromagnet which pulls the plunger into the coil. The plunger closes a set of contacts which allow high current to reach the starter motor. The charging system: The charging system consists of an alternator (generator), drive belt, battery, voltage regulator and the associated wiring. The charging system, like the starting system is a series circuit with the battery wired in parallel. After the engine is started and running, the alternator takes over as the source of power and the battery then becomes part of the load on the charging system. The alternator, which is driven by the belt, consists of a rotating coil of laminated wire called the rotor. Surrounding the rotor are more coils of laminated wire that remain stationary (called stator) just inside the alternator case. When current is passed through the rotor via the slip rings and brushes, the rotor becomes a rotating magnet having a magnetic field. When a magnetic field passes through a conductor (the stator), alternating current (A/C) is generated. This A/C current is rectified, turned into direct current (D/C), by the diodes located within the alternator. -
Ignition System
IGNITION SYSTEM The ignition system of an internal combustion engine is an important part of the overall engine system. All conventional petrol[[1]] (gasoline)[[2]] engines require an ignition system. By contrast, not all engine types need an ignition system - for example, a diesel engine relies on compression-ignition, that is, the rise in temperature that accompanies the rise in pressure within the cylinder is sufficient to ignite the fuel spontaneously. How it helps It provides for the timely burning of the fuel mixture within the engine. How controlled The ignition system is usually switched on/off through a lock switch, operated with a key or code patch. Earlier history The earliest petrol engines used a very crude ignition system. This often took the form of a copper or brass rod which protruded into the cylinder, which was heated using an external source. The fuel would ignite when it came into contact with the rod. Naturally this was very inefficient as the fuel would not be ignited in a controlled manner. This type of arrangement was quickly superseded by spark-ignition, a system which is generally used to this day, albeit with sparks generated by more sophisticated circuitry. Glow plug ignition Glow plug ignition is used on some kinds of simple engines, such as those commonly used for model aircraft. A glow plug is a coil of wire (made from e.g. nichrome[[3]]) that will glow red hot when an electric current is passed through it. This ignites the fuel on contact, once the temperature of the fuel is already raised due to compression. -
Within the Industry
GROWING GALLONS WITHIN THE INDUSTRY Propane autogas is the leading alternative fuel in world — powering more than 25 million vehicles worldwide. The U.S. propane-autogas-powered vehicle market lags in acceptance with just over 200,000 vehicles. The propane industry fleet accounts for a small, but growing, percentage of the overall population. Thanks to recent improvements in propane autogas fuel system technology, a growing number of propane marketers are choosing propane autogas rather than diesel and gasoline powered engines when they specify and purchase vehicles. The original objective of this paper was to define the status of converting the propane industry’s fleet to our fuel and identify barriers that were obstructing growth in this industry and others. In this edition, we want to share an industry status update as well as recent successes in the expansion of propane autogas. Today, more marketers are choosing propane autogas for their fleets. As this report outlines, propane autogas is providing significant overall total cost-of-ownership (TCO) savings that translates into profits for all marketers regardless of fleet size. PROPANE AUTOGAS VEHICLES of the current propane vehicles requires an investment, but that Like other transportation markets, the propane industry follows investment is paying off in many ways. Pickup trucks, manager and standard practices when specifying and purchasing class 1-8 service vehicles, bobtails, and cylinder rack trucks all are available vehicles to safely transport payload, optimize vehicle performance, from multiple brands in both dedicated and bi-fuel models. These and provide the highest possible returns for their stakeholders. options provide comparable performance to conventional fuels with Propane autogas is becoming the choice for many marketer fleets a much lower TCO and much quicker ROI. -
Overview of Materials Used for the Basic Elements of Hydraulic Actuators and Sealing Systems and Their Surfaces Modification Methods
materials Review Overview of Materials Used for the Basic Elements of Hydraulic Actuators and Sealing Systems and Their Surfaces Modification Methods Justyna Skowro ´nska* , Andrzej Kosucki and Łukasz Stawi ´nski Institute of Machine Tools and Production Engineering, Lodz University of Technology, ul. Stefanowskiego 1/15, 90-924 Lodz, Poland; [email protected] (A.K.); [email protected] (Ł.S.) * Correspondence: [email protected] Abstract: The article is an overview of various materials used in power hydraulics for basic hydraulic actuators components such as cylinders, cylinder caps, pistons, piston rods, glands, and sealing systems. The aim of this review is to systematize the state of the art in the field of materials and surface modification methods used in the production of actuators. The paper discusses the requirements for the elements of actuators and analyzes the existing literature in terms of appearing failures and damages. The most frequently applied materials used in power hydraulics are described, and various surface modifications of the discussed elements, which are aimed at improving the operating parameters of actuators, are presented. The most frequently used materials for actuators elements are iron alloys. However, due to rising ecological requirements, there is a tendency to looking for modern replacements to obtain the same or even better mechanical or tribological parameters. Sealing systems are manufactured mainly from thermoplastic or elastomeric polymers, which are characterized by Citation: Skowro´nska,J.; Kosucki, low friction and ensure the best possible interaction of seals with the cooperating element. In the A.; Stawi´nski,Ł. Overview of field of surface modification, among others, the issue of chromium plating of piston rods has been Materials Used for the Basic Elements discussed, which, due, to the toxicity of hexavalent chromium, should be replaced by other methods of Hydraulic Actuators and Sealing of improving surface properties. -
Physics 170 - Thermodynamic Lecture 40
Physics 170 - Thermodynamic Lecture 40 ! The second law of thermodynamic 1 The Second Law of Thermodynamics and Entropy There are several diferent forms of the second law of thermodynamics: ! 1. In a thermal cycle, heat energy cannot be completely transformed into mechanical work. ! 2. It is impossible to construct an operational perpetual-motion machine. ! 3. It’s impossible for any process to have as its sole result the transfer of heat from a cooler to a hotter body ! 4. Heat flows naturally from a hot object to a cold object; heat will not flow spontaneously from a cold object to a hot object. ! ! Heat Engines and Thermal Pumps A heat engine converts heat energy into work. According to the second law of thermodynamics, however, it cannot convert *all* of the heat energy supplied to it into work. Basic heat engine: hot reservoir, cold reservoir, and a machine to convert heat energy into work. Heat Engines and Thermal Pumps 4 Heat Engines and Thermal Pumps This is a simplified diagram of a heat engine, along with its thermal cycle. Heat Engines and Thermal Pumps An important quantity characterizing a heat engine is the net work it does when going through an entire cycle. Heat Engines and Thermal Pumps Heat Engines and Thermal Pumps Thermal efciency of a heat engine: ! ! ! ! ! ! From the first law, it follows: Heat Engines and Thermal Pumps Yet another restatement of the second law of thermodynamics: No cyclic heat engine can convert its heat input completely to work. Heat Engines and Thermal Pumps A thermal pump is the opposite of a heat engine: it transfers heat energy from a cold reservoir to a hot one. -
Automotive Maintenance Data Base for Model Years 1976-1979
. HE I 8.5 . A3 4 . D0T-TSC-NHTSA-80-26 DOT -HS -805 565 no DOT- TSC- NHTSA 80-3.6 ot . 1 I— AUTOMOTIVE MAINTENANCE DATA BASE FOR MODEL YEARS 1976-1979 PART I James A. Milne Harry C. Eissler Charles R. Cantwell CHILTON COMPANY RADNOR, PA 19079 DECEMBER 1980 FINAL REPORT DOCUMENT IS AVAILABLE TO THE PUBLIC THROUGH THE NATIONAL TECHNICAL INFORMATION SERVICE, SPRINGFIELD, VIRGINIA 22161 Prepared For: U. S. DEPARTMENT OF TRANSPORTATION Research and Special Programs Administration Transportation Systems Center Cambridge, MA 02142 . NOTICE This document is disseminated under the sponsorship of the Department of Transportation in the interest of information exchange. The United States Govern- ment assumes no liability for its contents or use thereof NOTICE The United States Government does not endorse pro- ducts or manufacturers. Trade or manufacturer's names appear herein solely because they are con- sidered essential to the object of this report. NOTICE The views and conclusions contained in the document are those of the author(s) and should not be inter- preted as necessarily representing the official policies or opinions, either expressed or implied, of the Department of Transportation. Technical Report Documentation Page 1* Report No. 2. Government Accession No. 3. Recipient's Catalog No. _ DOT-HS-805 565 4. Title and Subtitle 5. Report Dote Automotive Maintenance Data Base for Model Years December 1980 1976-1979 6. Performing Orgonization Code Part I 8. Performing Organization Report No. 7. Author's) J ame s A Milne , Harry C. Eissler v\ DOT-TSC-NHTSA-80-26 Charles R. Cantwell 9.