Lean and Mean India Armed Forces Order New Light-Attack Chopper Developed by HAL
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Wisdom & Woe from the Workshop
Worn camshaft wisdom & woe from the workshop This month we will be looking at camshafts and how to select the correct camshaft for your application. Most TVR applications utilise relatively high performance camshafts, so the longevity of these components is often compromised. This means that most TVR engines will require camshaft replacement at some point in their lifetime... Many TVR engines (e.g. Rover V8 and Cologne or Essex V6) have a single camshaft located in the centre of the engine block, with both intake and exhaust lobes on the same camshaft. This type of set-up translates the motion of the cam lobes to the intake and exhaust valves via followers, pushrods and rocker arms. Other TVR engines (e.g. Speed Six) have two separate camshafts located in the top of the cylinder head, with the intake lobes on one camshaft and the exhaust lobes on the other camshaft. This type of set-up translates the motion of the cam lobes to the intake and exhaust valves via solid finger followers. Rover V8 When selecting a non-standard camshaft for your application you first need to ensure that you have the ability to modify the fuel quantity and ignition timing, particularly at full load and preferably throughout the entire load/rpm range. If the camshaft is not significantly different from the original specification, then a slight adjustment of the fuel pressure and ignition advance at peak torque may be sufficient. If the camshaft is significantly different from the original then you may require some significant work in terms of fuel and ignition adjustments, to ensure that you get the most out of your chosen camshaft (e.g. -
Modeling and Analysis of Composite Automotive V8
MODELING AND ANALYSIS OF COMPOSITE AUTOMOTIVE V8 ENGINE B.Sreenivasulu1, K.Anil Kumar2, P.Paramesh3 1,2,3 Assistant Professor In Mechanical Engineering Dept, Sphoorthy Enginering College, Hyderabad, (India) ABSTRACT Heat losses are a major limiting factor for the efficiency of internal combustion engines. Furthermore, heat transfer phenomena cause thermally induced mechanical stresses compromising the reliability of engine components. The ability to predict heat transfer in engines plays an important role in engine development. Today, predictions are increasingly being done with numerical simulations at an ever earlier stage of engine development. These methods must be based on the understanding of the principles of heat transfer. In the present work V type multi cylinder engine assembly is modeled. This model is imported to ANSYS and done the steady state Thermal and Structural analysis for predicting thermal stress, temperature distribution, heat flux by comparing with two different material (FU 2451) from existing material (Aluminium).Heat transfer is one major important aspect of energy transformation in internal combustion (IC) engines. Locating hot spots in a solid wall can be used as an impetus to design a better cooling system. Fast transient heat flux between the combustion chamber and the solid wall must be investigated to understand the effects of the non-steady thermal environment. Keywords: Cylinder, Combustion Chamber, FU 2451. I INTRODUCTION A V8 engine is a V engine with eight barrels mounted on the crankcase in two banks of four chambers, much of the time set at a privilege plot to one another yet frequently at a narrower edge, with each of the eight cylinders driving a typical crankshaft. -
Cylinder Deactivation: a Technology with a Future Or a Niche Application?: Schaeffler Symposium
172 173 Cylinder Deactivation A technology with a future or a niche application? N O D H I O E A S M I O U E N L O A N G A D F J G I O J E R U I N K O P J E W L S P N Z A D F T O I E O H O I O O A N G A D F J G I O J E R U I N K O P O A N G A D F J G I O J E R O I E U G I A F E D O N G I U A M U H I O G D N O I E R N G M D S A U K Z Q I N K J S L O G D W O I A D U I G I R Z H I O G D N O I E R N G M D S A U K N M H I O G D N O I E R N G E Q R I U Z T R E W Q L K J P B E Q R I U Z T R E W Q L K J K R E W S P L O C Y Q D M F E F B S A T B G P D R D D L R A E F B A F V N K F N K R E W S P D L R N E F B A F V N K F N T R E C L P Q A C E Z R W D E S T R E C L P Q A C E Z R W D K R E W S P L O C Y Q D M F E F B S A T B G P D B D D L R B E Z B A F V R K F N K R E W S P Z L R B E O B A F V N K F N J H L M O K N I J U H B Z G D P J H L M O K N I J U H B Z G B N D S A U K Z Q I N K J S L W O I E P ArndtN N BIhlemannA U A H I O G D N P I E R N G M D S A U K Z Q H I O G D N W I E R N G M D A M O E P B D B H M G R X B D V B D L D B E O I P R N G M D S A U K Z Q I N K J S L W O Q T V I E P NorbertN Z R NitzA U A H I R G D N O I Q R N G M D S A U K Z Q H I O G D N O I Y R N G M D E K J I R U A N D O C G I U A E M S Q F G D L N C A W Z Y K F E Q L O P N G S A Y B G D S W L Z U K O G I K C K P M N E S W L N C U W Z Y K F E Q L O P P M N E S W L N C T W Z Y K M O T M E U A N D U Y G E U V Z N H I O Z D R V L G R A K G E C L Z E M S A C I T P M O S G R U C Z G Z M O Q O D N V U S G R V L G R M K G E C L Z E M D N V U S G R V L G R X K G T N U G I C K O -
And Heavy-Duty Truck Fuel Efficiency Technology Study – Report #2
DOT HS 812 194 February 2016 Commercial Medium- and Heavy-Duty Truck Fuel Efficiency Technology Study – Report #2 This publication is distributed by the U.S. Department of Transportation, National Highway Traffic Safety Administration, in the interest of information exchange. The opinions, findings and conclusions expressed in this publication are those of the author and not necessarily those of the Department of Transportation or the National Highway Traffic Safety Administration. The United States Government assumes no liability for its content or use thereof. If trade or manufacturers’ names or products are mentioned, it is because they are considered essential to the object of the publication and should not be construed as an endorsement. The United States Government does not endorse products or manufacturers. Suggested APA Format Citation: Reinhart, T. E. (2016, February). Commercial medium- and heavy-duty truck fuel efficiency technology study – Report #2. (Report No. DOT HS 812 194). Washington, DC: National Highway Traffic Safety Administration. TECHNICAL REPORT DOCUMENTATION PAGE 1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. DOT HS 812 194 4. Title and Subtitle 5. Report Date Commercial Medium- and Heavy-Duty Truck Fuel Efficiency February 2016 Technology Study – Report #2 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Thomas E. Reinhart, Institute Engineer SwRI Project No. 03.17869 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) Southwest Research Institute 6220 Culebra Rd. 11. Contract or Grant No. San Antonio, TX 78238 GS-23F-0006M/DTNH22- 12-F-00428 12. Sponsoring Agency Name and Address 13. -
Lexus History 1989-2019
LEXUS HISTORY BRAND CARS INNOVATIONS 1983 August 1983. At a secret meeting More than 400 prototype Over 1,400 engineers and 2,300 in Japan, Toyota’s Chairman Dr vehicles are built, 100 are crash technicians rise to Toyoda-san’s Eiji Toyoda sets a challenge to a tested and more than 4.3 million challenge. team of strategists, engineers and test kilometres are driven in Japan, designers: “Can we create a the USA and Europe. Sixty designers, 24 engineering luxury car to challenge the very teams, and 220 support workers best?” are engaged on the “F1” project. Every detail was exhaustively thought through – build tolerances were at least twice as accurate as competitors. 1987 In May 1987, four years of development time and many full- sized clay models later, Lexus executives sign off on the final LS design. 1988 The brand name ‘Lexus’ is chosen to represent luxury and high-end technology. (Early suggestions included Alexis and Lexis.) 1989 The Lexus brand is born The first LS 400 is launched, At the Lexus Tahara plant in incorporating hundreds of new Japan, the welding process for the patents and setting new standards LS 400 is fully automated, making for quality and value. Almost welds 1.5 times stronger than 3,000 are sold in the first month those on conventionally welded after launch. vehicles. 1990 Lexus is launched in Europe with a On the LS 400, aerodynamic single model range: the LS 400. considerations lead to the underside of the vehicle having a smooth floorpan and a number of special fairings to direct airflow. -
The 4.7 Liter “Next Generation” and “Semi-Hemi” V8 Engine (Dodge - Jeep)
The 4.7 Liter “Next Generation” and “semi-Hemi” V8 Engine (Dodge - Jeep) Chrysler’s first truly new V-8 since the 1960s, the “Corsair” 4.7 had better power, gas mileage, and emissions than the 5.2 liter engine it replaced; a new truck V6, the 3.7 , was based on it, replacing the 3.9 liter V6 based on the 5.2. The engine was reportedly designed as a replacement for the venerable 4-liter AMC I-6, with the 3.7 to replace the AMC 2.5. EGR and knock sensors were added in 2005. In 2007 (model year 2008), Chrysler replaced the 4.7 liter V8 with a new version. Power went from 230 hp to 290 hp (and up to 320 lb-feet of torque) with that move; gas mileage went up, and noise and vibration went down. The new 4.7-liter V-8 features 5.7-Hemi features such as two spark plugs per cylinder, with a high 9.8:1 compression ratio, and better port flow; but it has a new slant/squish combustion system design. Refinements included significant revisions to the induction system, reduced reciprocating mass via a lightweight piston/rod assembly, and reduced accessory drive speed. A new normally open valve lash adjuster system smooths the engine at idle, while electronic throttle control is needed for new stability systems. The engine will be manufactured at the Mack Avenue Engine Complex in Detroit. Chrysler's New Cammer: Mopar’s first all-new production V8 in 41 years By RICK EHRENBERG. Copyright © 1999 by Rick Ehrenberg. -
Review of Advancement in Variable Valve Actuation of Internal Combustion Engines
applied sciences Review Review of Advancement in Variable Valve Actuation of Internal Combustion Engines Zheng Lou 1,* and Guoming Zhu 2 1 LGD Technology, LLC, 11200 Fellows Creek Drive, Plymouth, MI 48170, USA 2 Mechanical Engineering, Michigan State University, East Lansing, MI 48824, USA; [email protected] * Correspondence: [email protected] Received: 16 December 2019; Accepted: 22 January 2020; Published: 11 February 2020 Abstract: The increasing concerns of air pollution and energy usage led to the electrification of the vehicle powertrain system in recent years. On the other hand, internal combustion engines were the dominant vehicle power source for more than a century, and they will continue to be used in most vehicles for decades to come; thus, it is necessary to employ advanced technologies to replace traditional mechanical systems with mechatronic systems to meet the ever-increasing demand of continuously improving engine efficiency with reduced emissions, where engine intake and the exhaust valve system represent key subsystems that affect the engine combustion efficiency and emissions. This paper reviews variable engine valve systems, including hydraulic and electrical variable valve timing systems, hydraulic multistep lift systems, continuously variable lift and timing valve systems, lost-motion systems, and electro-magnetic, electro-hydraulic, and electro-pneumatic variable valve actuation systems. Keywords: engine valve systems; continuously variable valve systems; engine valve system control; combustion optimization 1. Introduction With growing concerns on energy security and global warming, there are global efforts to develop more efficient vehicles with lower regulated emissions, including hybrid electrical vehicles, electrical vehicles, and fuel cell vehicles. Hybrid electrical vehicles became a significant part of vehicle production because of their overall efficiency, and they still pose a significant cost penalty, resulting in a stagnant market penetration of 3.2% and 2.7% in 2013 and 2018, respectively, in the United States (US), for example [1]. -
DESIGN and IMPLEMENTATION of DRIVER DROWSINESS DETECTION SYSTEM by Aleksandar Colic
DESIGN AND IMPLEMENTATION OF DRIVER DROWSINESS DETECTION SYSTEM by Aleksandar Colic A Dissertation Submitted to the Faculty of The College of Engineering & Computer Science in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy Florida Atlantic University Boca Raton, FL December 2014 Copyright 2014 by Aleksandar Colic ii ACKNOWLEDGEMENTS I would like to express my sincere gratitude to my advisor Dr. Oge Marques for his support, guidance and encouragement throughout my graduate studies. I also wish to thank my committee: Dr. Borko Furht, Dr. Robert B. Cooper and Dr. Shihong Huang for their invaluable suggestions. I am deeply thankful to Jean Mangiaracina from Graduate Programs for her immeasurable help on this long journey. And last but not least my many thanks go to my family for always believing in me and friends and colleagues for always being there for me. iv ABSTRACT Author: Aleksandar Colic Title: Design and Implementation of Driver Drowsiness Detection System Institution: Florida Atlantic University Dissertation Advisor: Dr. Oge Marques Degree: Doctor of Philosophy Year: 2014 There is a substantial amount of evidence that suggests that driver drowsiness plays a significant role in road accidents. Alarming recent statistics are raising the interest in equipping vehicles with driver drowsiness detection systems. This disserta- tion describes the design and implementation of a driver drowsiness detection system that is based on the analysis of visual input consisting of the driver's face and eyes. The resulting system combines off-the-shelf software components for face detection, human skin color detection and eye state classification in a novel way. -
671Eabc00a0e0acc09ed5272cb
2017 LEXUS BEGINNINGS A NEW IDEA IS BORN Before Lexus, cars tended to be one thing or another. Some delivered performance, but not comfort; safety, but not style. With the 1990 release of the LS 400, Lexus introduced itself as a challenger to the status quo, bringing luxury, performance, and technology together for the first time. Over the quarter-century of relentless innovation that followed, Lexus has written a story that is truly amazing. The first LS 400s rolled off ships in the summer of 1989. BEGINNINGS LEXUS ‘YET’ PHILOSOPHY Opposites in harmony. This idea is the heart of the Lexus ‘Yet’ Philosophy, one of our guiding principles since we introduced the very first LS 400. It is why you are able to experience an exhilarating, powerful drive, yet with exceptional fuel efficiency. It is the epitome of luxury, yet with equally high environmental standards. It means surrounding you with the most advanced, yet elegantly intuitive, technology. LEXUS EXPERIENCE OMOTENASHI Anyone can deliver customer service. But only Lexus delivers omotenashi—the Japanese word for hospitality. More than simply fulfilling your requests, at the heart of omotenashi is anticipating your needs in advance and delivering service so exceptional it becomes an unexpected pleasure. This higher level of attention comes from an insightful understanding of your individual wants and needs, and a commitment to treating every customer as nothing less than a guest in our home. Like every car we build, we apply the same unrivalled standard to customer care. DESIGN LEXUS SIGNATURE L-FINESSE The new, yet already iconic, Lexus spindle grille The philosophy of ‘Yet’ is also at the heart boldly commands attention with its aggressive of the Lexus design philosophy, L-Finesse. -
Automotive DMS (Driver Monitoring System) Research Report, 2019-2020
Automotive DMS (Driver Monitoring System) Research Report, 2019-2020 June 2020 STUDY GOAL AND OBJECTIVES METHODOLOGY This report provides the industry executives with strategically significant Both primary and secondary research methodologies were used competitor information, analysis, insight and projection on the in preparing this study. Initially, a comprehensive and exhaustive competitive pattern and key companies in the industry, crucial to the search of the literature on this industry was conducted. These development and implementation of effective business, marketing and sources included related books and journals, trade literature, R&D programs. marketing literature, other product/promotional literature, annual reports, security analyst reports, and other publications. REPORT OBJECTIVES Subsequently, telephone interviews or email correspondence To establish a comprehensive, factual, annually updated and cost- was conducted with marketing executives etc. Other sources effective information base on market size, competition patterns, included related magazines, academics, and consulting market segments, goals and strategies of the leading players in the companies. market, reviews and forecasts. To assist potential market entrants in evaluating prospective INFORMATION SOURCES acquisition and joint venture candidates. The primary information sources include Company Reports, To complement the organizations’ internal competitor information and National Bureau of Statistics of China etc. gathering efforts with strategic analysis, data -
2 XI November 2014
2 XI November 2014 www.ijraset.com Volume 2 Issue XI, November 2014 ISSN: 2321-9653 International Journal for Research in Applied Science & Engineering Technology (IJRASET) Development of Automobile Catalytic Converter during Last Four Decades --A Review K. Srinivasa Chalapathi1, Dr. Ch.Bhavanarayana Murthy2, Dr. B. Sudheer Prem Kumar3 1Assoc. Prof, 2Professor, 3Professor & Head, Mechanical Engineering Department Anurag group of Institutions (formerly CVSR College of Engineering), JNTUH, Hyderabad Abstract: Awareness regarding atmospheric pollution effects on the environment and the health of humans, plants, animals and other living organisms and flora and fauna World over has inspired many researchers. Extensive research was carried out all over the world with particular reference to Industrial & Vehicular pollution. Automotive catalysts designed to detoxify the exhaust were implemented in USA in the vehicles of the model year 1975. By 2014 about 40 years have been spent all over the world in the research of automotive catalytic converters. The published papers can be categorized into five groups mainly based on (i) Numerical models (ii) Computational Fluid Dynamic models (iii) Design of Catalytic converters per se (iv) Laboratory experimentation (v) Development of catalytic materials. This paper aims at reviewing how the present day catalytic converter used in automobiles has evolved in the last four decades. About 150 technical papers published in various journals were studied. Some 52 papers are described briefly which indicated the furtherance in the said research. Important conclusions drawn from a few papers are discussed in the end. An exhaustive list of 151 references on the subject is appended. I. INTRODUCTION Stringent pollution control over exhaust emissions from automobiles made Automobile industry to develop various means by which the emissions are rid of pollutants like CO, HC and NOx. -
Effect of Cone Angle on Performance of Catalytic Converter Ch.Indira Priyadarsini, Dr.T.Ratna Reddy, Mr.N.Chandra Sekhar, R
Journal of Information and Computational Science ISSN: 1548-7741 Effect of Cone Angle on Performance of Catalytic Converter Ch.Indira Priyadarsini, Dr.T.Ratna Reddy, Mr.N.Chandra Sekhar, R. Hathiram Assistant Professor, Mechanical Engg. Dept., Chaitanya Bharathi Institute of Technology Hyderabad, [email protected] Associate Professor, Mechanical Engg. Dept., Chaitanya Bharathi Institute of Technology Hyderabad, [email protected] ABSTRACT Catalytic converter plays a vital role in reducing harmful gases, but the presence of catalytic converter increases the exhaust back pressure. Catalytic converter is the main pollution control device for modern vehicles in order to reach the ever-increasing legislative demands for low emission standards. in this work a flow analysis is carried out by varying four different Cone angles 45o, 60o. The velocity, pressure and temperature flow in converter has been presented for different configurations. It is observed velocity profile is uniform for 450 cone angle compared to 60 and even back pressure also less with 450 angle for pipe diameter of 0.018m. Keywords— Cone angle, Catalytic converter, CFD, Fluent, Performance I. INTRODUCTION A catalytic converter is a device used to reduce the emissions from an internal combustion engine (used in most modern day automobiles and vehicles). Not enough oxygen is available to oxidize the carbon fuel in these engines completely into carbon dioxide and water; thus toxic by-products are produced. Catalytic converters are used in exhaust systems to provide a site for the oxidation and reduction of toxic by-products (like nitrogen oxides, carbon monoxide, and hydrocarbons) of fuel into less hazardous substances such as carbon dioxide, water vapour, and nitrogen gas.