Wankel Engine
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Ibron E-Spik Ex
A numerical study of mixing phenomena and reaction front propagation in partially premixed combustion engines Ibron, Christian 2019 Document Version: Publisher's PDF, also known as Version of record Link to publication Citation for published version (APA): Ibron, C. (2019). A numerical study of mixing phenomena and reaction front propagation in partially premixed combustion engines. Department of Energy Sciences, Lund University. Total number of authors: 1 Creative Commons License: Unspecified General rights Unless other specific re-use rights are stated the following general rights apply: Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Read more about Creative commons licenses: https://creativecommons.org/licenses/ Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. LUND UNIVERSITY PO Box 117 221 00 Lund +46 46-222 00 00 CHRISTIAN IBRON CHRISTIAN A numerical study mixing -
Small Scale ORC Plant Modeling with the Amesim Simulation Tool: Analysis of Working Fluid and Thermodynamic Cycle Parameters Influence
Available online at www.sciencedirect.com ScienceDirect Energy Procedia 81 ( 2015 ) 440 – 449 69th Conference of the Italian Thermal Engineering Association, ATI 2014 Small scale ORC plant modeling with the AMESim simulation tool: analysis of working fluid and thermodynamic cycle parameters influence. M. Antonelli*, A. Baccioli, M. Francesconi, P. Psaroudakis, L. Martorano Università di Pisa, D.E.S.Te.C., Largo Lucio Lazzarino, Pisa 56122, Italy Abstract ORC plant transient modeling is an actual issue for the correct assessment of the size of the various components of the system especially when unpredictable fluctuations of the inlet thermal flux are to be considered. This work shows the modeling procedure of a small scale (10-50 kW) Waste Heat Recovery ORC plant which uses an innovative expansion device derived from a Wankel engine. The numerical model here presented was developed with the simulation tools AMESim and simulates the transient behavior of such a small scale system in all its main components: preheater, evaporator, expansion device and condenser. The aims of this work were to evaluate the suitability of the Wankel-derived mechanism to ORC systems and to establish its optimal working conditions for the employment in a low-grade heat recovery system. The application of several working fluids as well as of various operating conditions are presented in this paper. The analysis of the transient response of the plant is also presented with a particular attention to start up operations. © 20152015 Published The Authors. by Elsevier Published Ltd. This by E islse anvier open Ltd access. article under the CC BY-NC-ND license (Peerhttp://creativecommons.org/licenses/by-nc-nd/4.0/-review under responsibility of the Scientific). -
9914 the Manufacturability of the Rotapower® Engine
9914 The Manufacturability of the Rotapower® Engine Paul S. Moller, Ph.D. Freedom Motors Freedom Motors 1855 N 1st St., Suite B Dixon, CA 95620 www.freedom-motors.com All rights reserved. © 2018. No part of this publication may be reproduc ed, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, and recording or otherwise without the prior written permission of the authors. 9914 The Manufacturability of the Rotapower® Engine Paul S. Moller, Ph.D. Freedom Motors ABSTRACT introduced their rotary powered Evinrude RC-35-Q and Johnson Phantom snowmobiles. There are many elements of the charge cooled Wankel type rotary engine that make it inexpensive OMC also investigated liquid cooled housing marine to produce. OMC was able to show that they could models. OMC’s four rotor outboards raced six produce this type of engine at a cost competitive times in the summer and fall of 1973, winning every with their carbureted two-stroke engines. race in U class (unlimited). At the Galveston Speed Classic, they placed 1 st, 2nd and 3rd, lapping the THE PRODUCTION CHARGE COOLED WANKEL entire field three times (a fourth OMC boat rolled). WAS FIRST INTRODUCED AS A POTENTIALLY It was rumored that they once made a straightaway CLEAN, LOW COST, POWERFUL REPLACEMENT pass at 165 mph. FOR TW O-STROKES. THE CHARGE-COOLED ROTOR WANKEL TYPE In the late 60’s Outboard Marine Corporation ENGINE HAS A LOW PART COUNT (OMC) recognized the market value of an advanced, more powerful engine. This interest was When choosing an engine for a particular intensified by a growing concern that emission application or comparing the part count between issues would necessitate a clean burning, engines, the required power and torque environmentally friendly powerplant. -
Numerical Analysis on Combustion Characteristic of Leaf Spring Rotary Engine
Energies 2015, 8, 8086-8109; doi:10.3390/en8088086 OPEN ACCESS energies ISSN 1996-1073 www.mdpi.com/journal/energies Article Numerical Analysis on Combustion Characteristic of Leaf Spring Rotary Engine Yan Zhang, Zhengxing Zuo and Jinxiang Liu * School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China; E-Mails: [email protected] (Y.Z.); [email protected] (Z.Z.) * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel./Fax: +86-10-6891-1392. Academic Editors: Paul Stewart and Chris Bingham Received: 19 March 2015 / Accepted: 17 July 2015 / Published: 4 August 2015 Abstract: The purpose of this paper is to investigate combustion characteristics for rotary engine via numerical studies. A 3D numerical model was developed to study the influence of several operative parameters on combustion characteristics. A novel rotary engine called, “Leaf Spring Rotary Engine”, was used to illustrate the structure and principle of the engine. The aims are to (1) improve the understanding of combustion process, and (2) quantify the influence of rotational speed, excess air ratio, initial pressure and temperature on combustion characteristics. The chamber space changed with crankshaft rotation. Due to the complexity of chamber volume, an equivalent modeling method was presented to simulate the chamber space variation. The numerical simulations were performed by solving the incompressible, multiphase Unsteady Reynolds-Averaged Navier–Stokes Equations via the commercial code FLUENT using a transport equation-based combustion model; a realizable turbulence model and finite-rate/eddy-dissipation model were used to account for the effect of local factors on the combustion characteristics. -
DUMS I{ATIONALADVISORY COMMITTEE for AERONAUTICS
,- TECHN1CAL MEMO.RAI?DUMS i{ATIONAL ADVISORY COMMITTEE FOR AERONAUTICS. No. 309 —. LIGHT AEROPLANE ENGINE DEVELOPIM1lT. ... By Lieut. -Col. L. F. R, Fell. (Paper read at a joint meeting of the Royal Aeronautical Society and of the In8tit~~tion of Au_kornobileEngineersj February 19, 1925.) ..,’ —.—->... ,.. ,, April, 1925. —- .-— — 31176014410519 “LIGHT AEROPLANZ ENGINE.D~EIJOp~JE]TT~* ByLieut.-Col.-F ..F. R. Fell. It has frequently been stated and written that in order to popularize li,ght aircraft the”first essential is the production of a reliable engine capable of being easily maintained and.h,av- ing a long lif~, at the same time selling at a low figure. In the first part of this lecture it” is desired to point out the difficulties in the way of realizing this ideal before re~krking on the claims of the various types for adoption. Difficulties in the way of the Production of Light Aircraft Engines In the first place the public, and even aircraft designers, have been misled as to the t-ypeof engine that”is required by statements made in the nontechnical and sclilitcchnicalPress to the effect that it is possible to fly an aeroplane satisfactorily with a motorcycle engine. At this stage it is desired to state quite definitely that this is’impossible, as figures, which will be given later, cl-earlyindicate. T’nemethod of rating on capacity, instead of on a “~. basis - the normal manner for aircraft engines - has also caused—. consid- * Paper read at a joint mcetingof the Roycl Aeronautical Society and of the Institution of--ktomobile Engineers, February N, 19250 .— .-— .... -
FINAL PROJECT “Design a Radial Engine”
FINAL PROJECT “Design a Radial Engine” Project and Engineering Department Student: Maxim Tsankov Vasilev Tutors: Dr. Pedro Villanueva Roldan Dk. Pamplona, 27.07.2011 1 Contents I. Radial Engine ................................................................................................................................ 5 II. History of the Radial Engine ........................................................................................................... 7 III. Radial engines nowadays ......................................................................................................... 15 I. Kinematical and Dynamical Calculations ..................................................................................... 18 1. Ratio .............................................................................................................................................. 18 2. Angular velocity ............................................................................................................................ 18 3. Current Piston Stroke ................................................................................................................... 18 4. Area of the piston head: ............................................................................................................... 21 5. Different forces acting on the master-rod: .................................................................................. 21 II. Strength calculations of some of the major parts of the engine................................................ -
Effect of Using Biodiesel As a Fuel in C I Engine
International Journal of Engineering Science Invention ISSN (Online): 2319 – 6734, ISSN (Print): 2319 – 6726 www.ijesi.org ||Volume 5 Issue 7|| July 2016 || PP. 71-81 Effect of Using Biodiesel as a Fuel in C I Engine Swagatika Acharya1, Tatwa Prakash Pattasani2, Bidyut Prava Jena3 1,2Assistant Professor, Department of Mechanical Engineering, Gandhi Institute For Technology (GIFT), Bhubaneswar 3 Assistant Professor, Department of Mechanical Engineering, Gandhi Engineering College, Bhubaneswar Abstract: Biodiesels are fuels that are made from renewable oils that can usually be used in diesel engines without modification. These fuels have properties similar to fossil diesel oils and have reduced emissions from a cleaner burn due to their higher oxygen content. The present work investigates the performance of three types of biodiesel and diesel fuels in a Mitsubishi 4D68 4 in-line multi cylinder compression ignition (CI) engine using transient test cycle. The test results that will obtain are brake power, specific fuel consumption (SFC), brake thermal efficiency and exhaust emissions. An instrumentation system also will be developed for the engine testing cell and controlled from the control room. Biodiesel was also tested against diesel fuel in Exhaust Gas Recirculation (EGR) system. Thus it is possible that biodiesel fuels may work more effectively than fossil diesel in certain applications. Keywords: Biodiesel, CI engine, transient, Instrumentation, EGR I. Introduction Biodiesel, is the generic terms for all types of Fatty Acid Methyl Ester (FAME) as one among other organic renewable alternative fuel that can be used directly in any conventional diesel engine without modification. They are transesterified vegetable oils that have been adapted to the properties of fossilized diesel fuel and considered to be superior since they have a higher energetic yield been combusted in the diesel engine (Adams 1983) . -
Quasiturbine Rotor Development Optimization
Quasiturbine Rotor Development Optimization MOHAMMED AKRAM MOHAMMED A thesis submitted in fulfillment of the requirement for the award of the Degree of Master in Mechanical Engineering Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia June 2014 v ABSTRACT The Quasiturbine compressor is still in developing level and its have more advantages if compare with wankel and reciprocating compressors. Quasiturbine was separated in two main important components which they are housing and rotor .Quasiturbine rotor contains a number of parts such as blades, seal, support plate and mechanism .This research focus on modeling and simulation for Quasiturbine seal to improve it and reduce the wear by using motion analysis tool and simulation tool box in Solidworks 2014 software .This study has simulated the existing design and proposed design of seal with use Aluminum (1060 alloy ) as a material of seal for both cases . In addition it has been simulated three different materials for the proposed design of seal (Aluminum, ductile iron , steel ) .The proposed design of seal was selected as better design than the existing one when compared the distribution of von Mises stress and the percentage of deformation for both cases . According to the results of the three mateials that tested by simulation for the proposed design , ductile iron is the most suitable materials from the three tested materials for Quasiturbine seal . vi CONTENTS TITLE i DECLARATION ii DEDICATION iii ACKNOWLEDGEMENT iv ABSTRACT v CONTENTS vi LIST -
An Experimental Study of a Hydrogen-Enriched Ethanol Fueled Wankel Rotary Engine at Ultra Lean and Full Load Conditions ⇑ F
Energy Conversion and Management 123 (2016) 174–184 Contents lists available at ScienceDirect Energy Conversion and Management journal homepage: www.elsevier.com/locate/enconman An experimental study of a hydrogen-enriched ethanol fueled Wankel rotary engine at ultra lean and full load conditions ⇑ F. Amrouche a, , P.A. Erickson b, S. Varnhagen b, J.W. Park b a Centre de Développement des Énergies Renouvelables, CDER, 16340 Algiers, Algeria b Mechanical and Aerospace Engineering Department, UC Davis, CA 95616, USA article info abstract Article history: In this paper, the effect of hydrogen addition to ethanol in a monorotor Wankel engine at wide open Received 29 March 2016 throttle position and in an ultra-lean operating regime was experimentally investigated. For this aim, Received in revised form 20 May 2016 variation of hydrogen enrichment levels on the ethanol engine performance and emissions were consid- Accepted 12 June 2016 ered. Experiments were carried out under a constant engine speed of 3000 rpm and fixed spark timing of Available online 18 June 2016 15 °BTDC. The test results showed that hydrogen enrichment improved the combustion process through shortening of the flame development and flame propagation periods and reducing the cyclic variation. Keywords: Furthermore, the reduction of burn duration with the increase of hydrogen fraction enhances the thermal Wankel rotary engine efficiency, reducing the brake-specific energy consumption, as well as reducing the unburned hydrocar- Hydrogen enriched ethanol Ultra-lean burn bons emissions of the Wankel engine. Engine economy Ó 2016 Elsevier Ltd. All rights reserved. Unburned hydrocarbons emissions 1. Introduction new generation of rotary engines. -
Review of Quasi-Turbine Engine
ISSN(Online) : 2319-8753 ISSN (Print) : 2347-6710 International Journal of Innovative Research in Science, Engineering and Technology (An ISO 3297: 2007 Certified Organization) Vol. 5, Issue 10, October 2016 Review of Quasi-Turbine Engine Yogesh Khedkar1, Prof.Sushant Pande2 P.G. Student, Department of Mechanical Engineering, D Y Patil College of Engineering, Akurdi, Pune, India1 Assistant Professor, Department of Mechanical Engineering, D Y Patil College of Engineering, Akurdi, Pune, India2 ABSTRACT: The Quasi turbine engine is a multi-fuel, continuous torque rotary engine.It a next step in the world of Engine research is to run engine on air or any other fuel. Turbine characteristics help achieving this goal. The quasi turbine turbo-machine is a pressure driven, continuous torque and symmetrically deformable spinning wheel. The Quasi turbine is a compact, low weight and high torque machine with top efficiency, especially in power modulation applications. One of the most important things is waste energy recovery in industrial field. As the natural resources are going to exhaust, energy recovery has great importance. A quasi turbine rotary air engine having low rpm and works on low pressure recovers waste energy may be in the form of any gas or steam. This paper discusses concept of quasi turbine air and combustion engines also the comparison between the quasi turbine engine and the other engines. KEYWORDS: Quasi turbine (QT), Positive displacement rotor, piston less Rotary Machine. I. INTRODUCTION The Quasi-turbine is a new engine technology that was invented in 1990 and patented in 1996.The concept of quasi turbine rotary air engine was first introduced by Gilles Saint-Hilaire and etal. -
Master of Engineering Thesis Modelling a Novel Orbital Ic
Department of Mechanical Engineering University of Canterbury Te Whare Wānanga o Waitaha Telephone: +64-3-366 7001 Private Bag 4800 Facsimile: +64-3-364 2078 Christchurch 8020, New Zealand Website: www.mech.canterbury.ac.nz MASTER OF ENGINEERING THESIS MODELLING A NOVEL ORBITAL IC ENGINE TO AID FURTHER DESIGN By Lindsay Muir BE (Hons) 31 August 2014 Requirements for the degree of MASTER OF ENGINEERING IN MECHANICAL ENGINEERING Approved by: Dr Dirk Pons, Project Supervisor 1 COPYRIGHT LINDSAY MUIR 24/10/2015 0 TABLE OF CONTENTS 1 INTRODUCTION ................................................................................................ 11 1.1 Scenario ............................................................................................................. 11 1.2 Purpose .............................................................................................................. 13 1.3 Scope ................................................................................................................. 14 2 BACKGROUND .................................................................................................. 15 2.1 The Radial and Rotary engine .......................................................................... 15 2.1.1 History ............................................................................................................. 15 2.1.2 Multi-row radials .............................................................................................. 18 2.1.3 Diesel radials ................................................................................................. -
3.0 ACTUAL ENGINE CYCLE Reciprocating Internal Combustion
3.0 ACTUAL ENGINE CYCLE Reciprocating internal combustion engines operate on actual engine cycles, which are classified mainly into two groups: (i) Spark Ignition engines and (ii) Compression Ignition engines and these classifications are dependent on the mode of the ignition of the air/fuel mixture (charge) in the cylinder. The spark ignition engines operate based on the Otto cycle principle while the compression ignition engines operate basically on the Diesel cycle principle. The sequence of operations required by a reciprocating engine to perform a mechanical work could either be two or four strokes of engine piston motion which translates to one or two crankshaft revolution respectively. The piston of a reciprocating internal combustion engine could be termed as double acting (as seen in steam engines) or single acting (as is seen in most reciprocating internal combustion engines). If the engine cycle of operation takes place in only one side of the piston, its termed single acting while it is termed double acting when the cycle takes place on both sides of the piston. For an internal combustion engine to be efficient the following requirements are to be met: The mixture of fuel and air in the engine cylinder must be in the right proportion. Compression must take place on the mixture of air and fuel or air only before the addition of fuel (this is dependent on the engine cycle operation). The compressed mixture is to be ignited (which could be through the introduction of spark or auto-ignition) and the expanding combustion products used to drive the engine.