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Greensteam Design Report
Greensteam Design Report Double-acting Compound - Phase I Tae Rugh Fall 2020 Initial design CAD, renders, and motivation This is a 2 stage double-acting inline compound engine. This engine replaces the traditional cross-slide by extending the piston rod through the back end of the cylinder, thereby supporting the piston on either end. This increases the amount of required seals by two, but reduces moving mass and engine complexity. Steam enters the high pressure cylinder on both ends through bash valves. After high pressure expansion, steam exits through uniflow ports into a manifold which goes to the low pressure cylinder. Here, the semi-expanded steam expands again before finally exiting through uniflow exhaust ports into the atmosphere. The timing between high and low pressure pistons is slightly offset such that for the first ~5-10% of low pressure power stroke, the low pressure piston acts as a pump to improve the exhaust performance of the high pressure cylinder. For this portion, the low pressure piston is actually doing negative work, but the hope is that this produces more efficiency gains in the exhaust process to offset these losses. This claim is not too far-fetched considering, for example, internal combustion engines also incorporate an exhaust stroke in which the piston acts as a pump to remove the exhaust gas. Of course, this mechanism will need to be validated with further calculations. Part Breakdown The crankshaft has overhung cranks on either end, much like bicycle pedals, in order to avoid the manufacturing complexities that accompany traditional (non-overhung) cranks. o The cranks are offset from each other (currently at 120 ) such that the low pressure piston is slightly ahead of the high pressure piston, which induces the vacuum pump function of the low pressure piston. -
Lima 2-8-0 “Consolidation”, Developed for TS2013, by Smokebox
Union Pacific 4000 Class 4884-1 "Big Boy" circa 1948-49 Developed by Smokebox TM for Dovetail Games' Train Simulator © Smokebox 2021, all rights reserved Issue 1 Union Pacific 4000 Class 4884-1 "Big Boy" Steam Locomotive Page 2 Contents Introduction ....................................................................................................................................................... 7 32- and 64-bit TS ................................................................................................................................................ 7 Expert or Simple Controls mode, HUD and Automatic Fireman ....................................................................... 7 "All-in-one" .................................................................................................................................................... 7 Standard TS Automatic Fireman .................................................................................................................... 8 F4 HUD ........................................................................................................................................................... 8 High Detail (HD) and Standard Detail (SD) ........................................................................................................ 8 Recommended Settings ..................................................................................................................................... 9 Cab Layout ...................................................................................................................................................... -
Greensteam Design Report: Double-Acting Uniflow Engine Part
Greensteam Design Report: Double-acting Uniflow Engine Tae Rugh, Summer 2020 This is a single-cylinder double-acting uniflow engine with bash valve actuation. The cylinder has steam inlets on both sides, so that while one side is in power stroke, the other is in return stroke. The bash mechanism means that this engine does not need to draw from the shaft’s rotation for valve timing, which significantly reduces the complexity and number of moving parts. The drawback is that control of inlet cutoff is severely limited by geometry such that the inlet must be open before top dead center for the same amount of time as it remains open after top dead center. A single uniflow exhaust port is located in the center of the cylinder block and used for both sides. Part Breakdown The driveshaft consists of an overhung crank, flywheel, and shaft. The crank is overhung in order to reduce complexities in manufacturing. A bronze bushing is pressed into the crank and holds the crank pin, which is pressed into the piston’s connecting rod. The crank is secured to the shaft by a cotter pin. The flywheel is set to the shaft by two set screws, angled at 45°. The cylinder block includes the piston chamber, uniflow exhaust ports, and bash valves. An inner cylinder sleeve is used to maximize the area for exhaust to escape while maintaining guiding rails to keep the piston aligned. The groove on the inner cylinder allows exhaust exiting through any of the slots to continue to flow out through the exhaust port in the cylinder block. -
Bicentenary Programme Celebrating the Life and Legacy of James Watt
Bicentenary programme celebrating the life and legacy of James Watt 2019 marks the 200th anniversary of the death of the steam engineer James Watt (1736-1819), one of the most important historic figures connected with Birmingham and the Midlands. Born in Greenock in Scotland in 1736, Watt moved to Birmingham in 1774 to enter into a partnership with the metalware manufacturer Matthew Boulton. The Boulton & Watt steam engine was to become, quite literally, one of the drivers of the Industrial Revolution in Britain and around the world. Although best known for his steam engine work, Watt was a man of many other talents. At the start of his career he worked as both a mathematical instrument maker and a civil engineer. In 1780 he invented the first reliable document copier. He was also a talented chemist who was jointly responsible for proving that water is a compound rather than an element. He was a member of the famous Lunar Portrait of James Watt by Sir Thomas Lawrence, 1812 Society of Birmingham, along with other Photo by Birmingham Museums Trust leading thinkers such as Matthew Boulton, Erasmus Darwin, Joseph Priestley and The 2019 James Watt Bicentenary Josiah Wedgwood. commemorative programme is The Boulton & Watt steam engine business coordinated by the Lunar Society. was highly successful and Watt became a We are delighted to be able to offer wealthy man. In 1790 he built a new house, a wide-ranging programme of events Heathfield Hall in Handsworth (demolished and activities in partnership with a in 1927). host of other Birmingham organisations. Following his retirement in 1800 he continued to develop new inventions For more information about the in his workshop at Heathfield. -
Owner's Manual
MODEL 49104-1 owner’s manual MODEL 49104-1 6200 TRAXXAS WAY, McKINNEY, TX 75070 1-888-TRAXXAS owner’s manual 141030 KC2230-R00 49104-1-KC2230-R00-T-Maxx-Operating.indd 36-37 10/30/14 2:13 PM INTRODUCTION 3 BEFORE YOU Thank you for purchasing a Traxxas T-Maxx Nitro Monster Truck. PROCEED Traxxas engineers have loaded your T-Maxx with innovative features Traxxas Support and incredible “drive-over-anything” performance that you won’t find Traxxas support is with you every step of the 4 SAFETY way. Refer to the next page to find out how to PRECAUTIONS anywhere else! contact us and what your support options are. Your T-Maxx combines automatic, two-speed shifting in forward 5 TOOLS, SUPPLIES, and reverse, with powerful four-wheel disc braking. The patented AND REQUIRED Quick Start transmission design and TQ 2.4GHz system put these functions right at EQUIPMENT This manual is designed with a Quick your fingertips. Start path that outlines the necessary 6 ANATOMY OF The TRX 2.5 engine is one of the most powerful engines of its size procedures to get your model up THE T-MAXX ever available in a Ready-To-Race® truck. Two years of engineering and running in the shortest time possible. If you are an development and advanced design, along with thousands of hours of experienced R/C enthusiast, you will find it helpful and fast. 7 QUICK START: testing, puts the TRX 2.5 in a class by itself. Each part of the TRX 2.5, Be sure and read through the rest of the manual to learn GETTING UP TO from the air filter on the slide carburetor, to the tip on the dyno-tuned about important safety, maintenance, and adjustment SPEED exhaust system, has been carefully engineered to provide maximum procedures. -
Cyclically Operating Valves for Machines Or Engines
CPC - F01L - 2021.01 F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES Definition statement This place covers: • Valve-gear or valve arrangements, e.g. lift-valve gear; • Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; • Slide valve-gear or valve-arrangements; • Valve-gear or valve arrangements actuated non-mechanically; • Valve arrangements in working piston or piston-rod; • Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations; • Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups; • Slide valve-gear or valve arrangements with cylindrical, sleeve, or part annularly-shaped valves surrounding working cylinder or piston; • Slide valve-gear or valve arrangements with reciprocatory and other movement of same valve, e.g. longitudinally of working cylinder and in cross direction • Use of working pistons or pistons-rods as fluid-distributing valves or a valve-supporting elements, e.g. in free-piston machines • Valves controlled by impact by piston, e.g. in free-piston machines; Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means; • Distribution or expansion valve-gear peculiar to free-piston machines or engines; • Reversing gear Valve drive, valve adjustment during operation; • Rotary or oscillatory slide valve-gear or valve arrangements, specially adapted -
Engine Reversing When Running at Manoeuvring Speeds
09 REVERSING Part I - General Diesel engines intended for the propulsion of ship fitted with neither a controllable pitch propeller nor a reversing gearbox are made in direct reversing form. Astern running involves carrying out the events of the cycle in the reverse order, i.e. altering the timing of valves and fuel pumps to cause them to start the engine in the opposite direction and then continue its operating cycle in this direction. Fill in the missing word Part I - General Diesel engines intended for the propulsion of ship fitted with neither a ________________ nor a reversing gearbox are made in ________________ form. ________________ involves carrying out the events of the cycle in the reverse order, i.e. altering the _____________ and fuel pumps to cause them to start the engine in the opposite direction and then continue its ________________ in this direction. Using the diagram below describe the timing of a two-stroke diesel engine The propeller thrust must be reversible in order to do manoeuvring of a ship. Usually manoeuvring is done while entering a port or leaving a port. In case of a controllable pitch propeller an unidirectional engine is sufficient. In case of limited power systems like medium speed engines of high speed engines, clutches and reverse gears may be used. But in large diesel engines, the main engines must be reversible and should be able to produce thrust efficiently in both the directions ( ahead and astern ) To reverse an engine the engine cycle may require re-timing. Large diesel engines have scavenge ports which controls the scavenge timing. -
Full Page Photo
THE LIFE AND TIMES OF A DUKE Martyn J. McGinty AuthorHouse™ UK Ltd. 500 Avebury Boulevard Central Milton Keynes, MK9 2BE www.authorhouse.co.uk Phone: 08001974150 © 2011. Martyn J. McGinty. All rights reserved No part of this book may be reproduced, stored in a retrieval system, or transmitted by any means without the written permission of the author. First published by AuthorHouse 04/25/2011 ISBN: 978-1-4567-7794-4 (sc) ISBN: 978-1-4567-7795-1 (hc) ISBN: 978-1-4567-7796-8 (e) Front Cover Photo: Th e Duke at Didcot (Courtesy P. Treloar) Any people depicted in stock imagery provided by Th inkstock are models, and such images are being used for illustrative purposes only. Certain stock imagery © Th inkstock. Th is book is printed on acid-free paper. Because of the dynamic nature of the Internet, any web addresses or links contained in this book may have changed since publication and may no longer be valid. Th e views expressed in this work are solely those of the author and do not necessarily refl ect the views of the publisher, and the publisher hereby disclaims any responsibility for them. Born out of Tragedy and Riddles, his lineage traceable, unerasable, back through the great houses of Chapelon, Giffard, Stephenson, Belpaire and Watt, the Duke was laid to rust by the sea, a few meagre miles from the mills that shaped the steel that formed the frames that bore the machine that Crewe built. Time passed and the Duke was made well again by kindly strangers. -
Greensteam Report: Valve Actuation Systems & Further Research Tae Rugh, Summer 2020
Greensteam Report: Valve Actuation Systems & Further Research Tae Rugh, Summer 2020 Valve Actuation Systems Greensteam aims to design a modern steam engine that maximizes simplicity and frugality while maintaining high energy efficiency. The valve actuation mechanism presents one of the most important design challenges in achieving this objective. A number of potential options have been designed, each with its advantages and drawbacks. Cam/Poppet The classic option--a staple for internal combustion engines--is the cam/poppet valve system. Unlike internal combustion engines which typically have a separate belt-driven camshaft, we can simply attach the cam to the crankshaft to reduce complexity. As the crankshaft rotates, the cam’s asymmetric shape pushes the cam follower rod up which opens a poppet valve to allow inlet steam to enter the cylinder. This system has superior sealing qualities and reliability. The drawbacks are that it can be complex to manufacture (high precision is required for the poppet head, poppet seat, and cam), it requires a heavy spring to maintain contact between the follower and cam (which reduces efficiency), and a separate poppet valve is necessary for each cylinder (meaning more moving parts). The cam shape determines the engine’s timing, but it is constrained by a number of variables. The first constraint is cutoff (cutoff is the percentage of the powerstroke duration in which steam is allowed to enter). For a 20% cutoff, the incline and decline must occur within 38° of the cam’s rotation. The second constraint is that the height offset must be sufficient for the desired inlet flow rate. -
Steam. ENGINE VÁLVE REVERSENG, GEAR. 1,684,228
Sept., ll, 1928. - __ __ . ' 1,684,228 * . J. KINDERVATER sTEAM. ENGINE VÁLVE REVERSENG, GEAR. i Filled July 19, 1923 2 Sheets-Sheet l l sept. 11, 1928. 1,684,228 “ J. KINDERVATER STEAM ENGINE VALVE REVERSING GEAR Filed July 19, 1923 2 Sheets-Sheet 2 S S SA Pa?elate: Sept. 1, 1928. 1,684,228 UNITED STATES PATENT OFFICE. JUS KINDERWATEER, OF NEW YoRK, N. Y. sTEAM-ENGINE VALVE REVERSING GEAR. Application filed July 19, 1923. Serial No. 852,542. My invention relates to power actuated re ing Cylinder, 3, is supported on the boiler of the locomotive, and is closed, at its ends, by versing gear for steam orother fluid pressure removable heads, 3º. A properly packed pis engines, more, particularly those of locomo ton, 4, is fitted in the cylinder, and is secured tives, ?dits objectis to provide an appliance On a piston rod, 4°, which passes through the g ofexpensivé such type construction which will beand of readysimple applica and in rear head of the cylinder and projects into a bility in connection with valve gears of any casing, 8º, which is secured thereto and is of the various standard constructions, and in closed at its outer, end. The piston rod is the operation of which, positive and acgurate of rectangular section, and a rack, 4P, is cut on one of its sides. The admission and ex 26 adjustment will be attained, and creeping be haust of motive fluid, which may be either fully prevented. O p steam Qr compressed air, to and from oppo Thè improvement claimed is hereinafter site ends of the cylinder, 3, is controlled by an fully set forth. -
System Analysis of a Piston Steam Engine Employing the Uniflow PERFORMING ORGANIZATION CURE Principle, a Study in Optimized Performance 6
General Disclaimer One or more of the Following Statements may affect this Document This document has been reproduced from the best copy furnished by the organizational source. It is being released in the interest of making available as much information as possible. This document may contain data, which exceeds the sheet parameters. It was furnished in this condition by the organizational source and is the best copy available. This document may contain tone-on-tone or color graphs, charts and/or pictures, which have been reproduced in black and white. This document is paginated as submitted by the original source. Portions of this document are not fully legible due to the historical nature of some of the material. However, it is the best reproduction available from the original submission. Produced by the NASA Center for Aerospace Information (CASI) M-TU-75-5 F^ May 1975 • 4::7SPAC1' GEORGE C ^/CNT EN^fR l SYSTEM ANALY S IS OF A P I STON STEAM ENGINE EMPLOYING THE UNIFLOW PRINCIPLE, A STUDY IN k OPTIMIZED PERFORMANCE By Jerry A. Peoples (NASA-TM-X-66918) SYSTEM ANALYSIS OF A N75-24544 PISTON STEAM SNGINE EMPLOYING THE UNIFLOW UPINCIPLE, A ST?IDY IF OPTIMIZED PE&FO..MANCE (NAS,i ) 76 p HC $4.75 CSCL 21G Unclas G3/85 21845 v t^ • v 1 / - Ito ^6 sponsored by: Technology Util ization Office K kTIONAL AERONAUTICS AND SPACE ADMINISTRATION MSFC - Furm 4S4 (Rry October 1967) y TFf'Wki1(-A1 1aFMnPT CTANr1ARr1 TITI P PAGF REPORT 40. 2 GOVERNMENT ACCESSION NO. 3, RECIPIENT'S CATALOG NO. -
Parabolic Dish Solar Thermal Power Annual Program Review Proceedings
5105 -83 DOE/JPL 1060-46 Solar Thermal Power Systems Project D~stributionCategory UC-62 Parabolic Dlsh Systems Devebpment Parabolic Dish Solar Thermal Power Annual Program Review Proceedings May 1,1981 Prepared for U.S. Department of Energy Through an agreement wlih Natlonal Aeronautics and Space Adm~nistration by Jet Propuls~onLaboratory Cal~forn~aInsh, ~teof Technology Pasadena. Cahfornia (JPL F'UBLICATION 81-44) 5105 -83 DOE/JPL U60-46 Solar Thermal Power Systems Project Distribution Category UC-62 Parabolic Dish Systems Development .I :: # a -. i- Parabolic Dish 3.*. ' i Solar Thermal Power . *_ ~ a h Annual Program Review Proceedings May 1,1981 Prepared for U S. Department of Energy Throuah an aareement wltk ~at106al~eroiautics and Space Admmistration by Jet Propulsion Laboratory Callforn~alnstltute of Technology Pasadena, Callfornla (JPI . PUBLICATION 81-44) Prepared by the Jet Propulsion khontory, California Institute of Technology, for the U.S Department of Energy through an agreement with the Natrond Aere nautics and Space Administration. The JPL Solar Thermal Power Systems Project is sponsored by the U.S. Depart- ment of Energy and fxms a part of :he Soh Thermal Rognm to develop low- cost solar thermal and electric power plantr Thb report was prepared as an account of work sponsored by the United States Government. Neither the United States nor the United States Department of Energy, nor any of their employees, nor any of their contractors. subcontractors, or theu employees. makes any warranty, cxpress or implied, or assumes any legal liability or respons~bilityfor the accuracy, completeness or usefulness of any in- formation, apparatus.