Criteria

Text:
Display:

Results

Viewing 1 to 30 of 6361
2015-07-20 ...
  • July 20-21, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
The purpose of this course is to provide an overview of the factors in the cylinder kit assembly of natural gas, gasoline, and diesel engines that affect oil consumption, ring and cylinder bore wear, and blow-by. This course includes background and the evolution of designs and materials currently employed in modern engines as well as providing an overview of computer models, designs, and material systems that can be utilized to optimize the performance of new engines. An overview of the trends in materials and designs employed in U.S., European and Japanese engines will be presented.
2015-06-03 ...
  • June 3-5, 2015 (2 Sessions) - Live Online
  • December 9-11, 2015 (2 Sessions) - Live Online
Training / Education Online Web Seminars
Turbocharging is already a key part of heavy duty diesel engine technology. However, the need to meet emissions regulations is rapidly driving the use of turbo diesel and turbo gasoline engines for passenger vehicles. Turbocharged diesel engines improve the fuel economy of baseline gasoline engine powered passenger vehicles by 30-50%. Turbocharging is critical for diesel engine performance and for emissions control through a well designed exhaust gas recirculation (EGR) system. In gasoline engines, turbocharging enables downsizing which improves fuel economy by 5-20%.
2015-04-21
Event
This session will cover conceptual, modeling and experimental studies relating to advanced turbochargers/superchargers and advanced boosting systems to achieve increased power density, better fuel economy, and reduced emissions.
2015-04-21
Event
This session covers the Power Cylinder: piston, piston rings, piston pins, and connecting rods. The papers include information on reducing friction and increasing fuel economy, improving durability by understanding wear, and decreasing oil consumption and blow-by.
2015-04-21
Event
In this session, research and development of small engine technology will be covered. Topics include combustion, emission, control, and NVH.
2015-04-21 ...
  • April 21-22, 2015 (8:30 a.m. - 4:30 p.m.) - Detroit, Michigan
  • June 16-17, 2015 (8:30 a.m. - 4:30 p.m.) - Charlotte, North Carolina
  • August 24-25, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • December 8-9, 2015 (8:30 a.m. - 4:30 p.m.) - Norwalk, California
Training / Education Classroom Seminars
Attendees to the seminars held in conjunction with the SAE 2015 World Congress will receive COMPLETE access to Congress activities for only $55 per day. If interested, please contact our Customer Service department at +1.877.606.7323 (U.S. and Canada only) or +1.724.776.4970 (outside U.S. and Canada) to register for this special Congress daily rate. As diesel engines become more popular, a fundamental knowledge of diesel technology is critical for anyone involved in the diesel engine support industry.
2015-03-16 ...
  • March 16-18, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • July 27-29, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • November 9-11, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
The need to control emissions and maintain fuel economy is driving the use of advanced turbocharging technology in both diesel and gasoline engines. As the use of diesel engines in passenger car gasoline and diesel engines increases, a greater focus on advanced turbocharging technology is emerging in an effort to reap the benefits obtained from turbocharging and engine downsizing. This seminar covers the basic concepts of turbocharging of gasoline and diesel engines (light and heavy duty), including turbocharger matching and charge air and EGR cooling, as well as associated controls.
2015-02-02
Event
2015-01-14
Technical Paper
2015-26-0178
Usman Ali Mohammed, Nitin Gokhale, Sujit Pardeshi, Uday Gokhale, M N Kumar
The stringent emission norms and increasing demand for engines with higher power density lead to an extensive investigation of parameters affecting combustion performance. Recent emission norms have forced the engine manufacturers to reduce the Particulate matter (PM) emissions along with other emissions substantially. In order to achieve lo PM emissions the lubrication oil consumption need to be controlled by optimizing piston group design with low liner bore distortion. Bore Distortion is the deviation of actual profile from perfect circular profile at any plane perpendicular to axis of cylinder. Liner bore distortion in engines causes number of problems like deterioration of piston ring performance, liner-ring conformability issues, high lubricating oil consumption and emissions.
2015-01-14
Technical Paper
2015-26-0198
Rushikesh Dakhore, Naresh G. Gandhi, Nitin Gokhale, Yogesh Aghav, M N Kumar, Dattatray B. Hulwan
To meet stringent emission norms with internal engine measures, design of piston cavity geometry perform a defining role in air motion, fuel air mixing, combustion and emission formation. A study is performed with the objective to have a better tradeoff between NOx, PM and fuel consumption for a Medium duty, constant speed diesel engine operated with Mechanical fuel injection system. Through simulations in 3D CFD tool the effect of piston cavity geometry on performance and emission of diesel engine is investigated and then validated with actual experimentation. In this exercise efforts are made to reduce emissions in a direct injection diesel engine by changing the piston cavity geometry. The piston cavity geometry and dimensions like torus radius, pip region, cavity lip area, and impingement area have an effect on emission formation. The target was to deliberately split the fuel spray and have a better utilization of available air.
2015-01-14
Technical Paper
2015-26-0129
Kapil Gupta, MR Vikram, Eugenio Manta
ABSTRACT A turbocharger unit mainly consists of a centrifugal compressor and a turbine coupled together by a solid shaft. This is employed to boost the charge air pressure of engine. Turbocharging in modern diesel and gasoline engines have become a common and essential operation to result higher power outputs, lower emissions, improved efficiency and refinements from a similar capacity of naturally aspirated engine. The automotive turbocharger system is a source of synchronous and asynchronous noises which are particularly very disturbing for the passengers. This need to be eliminated or reduced for passenger comfort. Subjectively, a high whistle noise was audible at passenger cabin during in mid-rpm range drive in all gears in a 4 cylinder diesel vehicle. Objective noise and vibration data confirm the issue as unbalance whistle.
2015-01-14
Technical Paper
2015-26-0039
Naresh G. Gandhi, Yogesh Aghav, Nitin Gokhale, M N Kumar
Development trend in diesel engines is to downsize and develop more power from same size of engine. This requires additional air flow and hence increased boost pressure ratio (BPR). With increased brake mean effective pressure (BMEP), the altitude capability of engine reduces. This paper presents a novel approach to estimate the altitude capability of engine and calculate deration factor. As the altitude above sea level increases, ambient pressure decreases, air becomes thinner. For same altitude ambient temperature also varies as per seasonal changes. This results in change (reduction) in ambient air density. This reduction has significant effect on turbocharger (TC), Intercooler and engine performance. Beyond a limiting altitude, engine performance shall be compromised to avoid any damage to engine and its components.
2015-01-14
Technical Paper
2015-26-0202
Mahesh Patwardhan, Jagannath M Paranjpe, Sushil S Ramdasi, Nagesh Voderahobli Karanth, Neelkanth V Marathe, Prasad Bhat
Use of Non Linear Analysis in Powertrain Design for Prediction of Cylinder Bore Distortion, Design changes for Reduction along with Experimental Validation M.A. Patwardhan, J. M. Paranjpe, S.S. Ramdasi, N.V. Karanth, N.V. Marathe, ARAI Pune Abstract The work presented in this paper deals with the use of non-linear FEA simulation in powertrain development. Prediction of cylinder bore distortion early in the design stage significantly affects overall performance of engine as bore distortion directly affects oil consumption, blowby and emission. The paper presents a methodology for predicting bore distortion with an objective of achieving improved performance of powertrain.
2015-01-14
Technical Paper
2015-26-0025
Sireesha Mandagaddi
Abstract In diesel systems, compression ratio(CR) is one of the key parameters which plays an important role in its performance. The volume of air that is sucked into the cylinder and which will be further compressed in compression stroke depends on the swept volume due to the piston movement from Top Dead centre (TDC) to Bottom Dead Centre (BDC) within the cylinder. The increase in CR through increase in the swept volume without changing either cylinder or piston sizes and without altering the TDC position will be very useful. The author proposes two schemes based on variable ConRod (Connecting Rod) and Movable Crank Pin approaches to realize the increase in CR. The author also touches upon the scope of varying the CR in these schemes.
2015-01-14
Journal Article
2015-26-0051
Srinivas Jilakara, Jaikumar V Vaithianathan, Saravanan Natarajan, Venkateswara R Ramakrishnan, GP Subash, Mathew Abraham, Jayakrishnan Krishnan Unni, Lalit Mohan Das
Abstract Hydrogen is considered as one of the potential alternate fuel and when compared to other alternate fuels like CNG, LPG, Ethanol etc., it has unique properties due to absence of carbon. In the current work, Hydrogen engine of 2.5 L, four cylinder, spark ignited Turbocharged-Intercooled engine is developed for Mini Bus application. Multi-point fuel injection system is used for injecting the hydrogen in the intake manifold. Initially, boost simulation is performed to select the optimum compression ratio and turbocharger. The literature review has shown that in-order to get the minimum NOx emissions Hydrogen engines must be operated between equivalence ratios ranging from 0.5 to 0.6. In the present study, full throttle performance is conducted mainly with the above equivalence ratio range with minimum advance for Maximum Brake Torque (MBT) ignition timing. At each operating point, the performance, emissions and combustion parameters are recorded and analyzed in detail.
2015-01-14
Journal Article
2015-26-0105
Prakash Kamat, Yogesh Aghav, Nitin Gokhale, M N Kumar
Abstract An innovative Diffusive Air Jet (DAJ) Combustion Chamber concept has been introduced in the present work. The DAJ Combustion Chamber design is based on the study of rate of heat release (ROHR) curve and its correlation with emission generation. The objective is to lower the trade-off between NOx and soot without sacrificing fuel economy of Direct Injection (DI) diesel engine. DAJ Combustion Chamber modifies ROHR curve to the desired one so that it lowers engine out emissions. To study its effect, a large bore, six cylinder engine with mechanical fuel injection system has been used. Three dimensional simulation software is used for the model calibration of basic reentrant cavity. Local emissions and ROHR curve have been studied using reentrant cavity shape. It has been modified to DAJ Combustion Chamber using Air Jet Chambers (AJCs). AJCs are positioned in the three dimensional model in such a way that they affect local in-cylinder emissions.
2015-01-14
Technical Paper
2015-26-0226
Bhaskarjyoti Saikia, Piyush Ranjan, Remesan Chirakkal, Vasundhara V Arde
The application of virtual simulation of Engine components has become an integral part of design and development process. Virtual simulation offers opportunities to reduce number of physical testsduring design verification and validation and thereby helps in achieving considerable reduction in development time and cost. This paper explains a case study that was essential for assessment of strength & fatigue analysis of diesel engine connecting rod as part of an engine development program for power upgrade through Turbo charging. The methodology adopted simulates major loading conditions for Compressive& Tensile stress &fatigue life of connecting rod. Finite element analysis was done to calculate static displacement, strain and stresses under maximum compressive and tensile loading which were then used for critical point evaluation.
2015-01-14
Technical Paper
2015-26-0097
Prasanna G Bhat, Sukrut Thipse, Neelkanth V Marathe, Narendra Pawar, Hirak Jyoti Gayen, Dadarao Narwade, Bhaskar Melage, S V A Achari
Abstract Single cylinder and two cylinder diesel engines are widely used as a source of power generation, three wheelers as well as agricultural machines in small house-hold applications in India and other Asian countries. Use of high end technologies makes these engines too expensive. Therefore simple mechanically controlled components are used for these engines which make them simple in operation and maintenance. In order to meet stringent emission norms, there is a need for the development of these engines. The up-gradation of a two cylinder diesel genset engine is achieved with minimum hardware changes in the engine to make it cost effective. The engine is upgraded from Naturally Aspirated to Turbocharged Intercooled configuration with Exhaust Gas Recirculation (EGR). The changes in hardware include selection of suitable turbocharger, intercooler, and EGR flow rate. Presently, there are very few twin cylinder diesel engines with turbocharging for genset application.
2015-01-14
Technical Paper
2015-26-0035
Krishnan Sadagopan, Somasundaram Suresh Kumar, Arulsivan T, Senthilnathan Karunakaran
In the recent Past the automobile Industry have been focusing on Cost reduction and Quality Improvement. Ashok Leyland DOST- Engine has been designed with the motto of developing engine of Japanese Quality at Indian Cost. An Aluminum Alloy Cylinder Head has been designed & developed for this application through an Innovative and Efficient approach for the Cost Centric & Quality Conscious Indian Market. This is a first Aluminum 3-Cylinder Head developed for LCV application in India. Robust design process has helped us in achieving industry benchmark of BS4 emission with 2-Valve per Cylinder arrangement itself. In order to keep the tooling Cost minimum, the Cylinder Head has been manufactured using "Tilting GDC" Process. The selected material combined with apt Heat Treatment has eliminated the need of Bearing for the Single Overhead Camshaft. An Innovative approach for Compactness has been achieved by Mounting the Fuel Pump Housing , Tensioner and Common rail on the Cylinder Head.
2015-01-14
Technical Paper
2015-26-0100
Prasanna G Bhat, Neelkanth V Marathe, Bhaskar Melage, Hirak Gayan, Dadarao Narwade, Narendra Pawar, Dharmdev Vyas, Samadhan Awate, Abhishek Meshram, Pramod Ghadage, PJM Khan
Abstract The Objective of the work is to upgrade existing series of multi cylinder DI turbocharged intercooled diesel engines to meet revised stringent Stage-II emission norms for diesel genset application. In this engine tuning activity, focus is given on optimization of engine without any major modification on engine design features. In recent years, the demand use and penetration of diesel operated generating sets for the power generation application has sharply rise in India. These sharp rises in the DG engines have made the high impact on pollutants emitted by these sets. Hence, concerned authorities have first enforced the limits on the pollutants emitted by these sets in the year 2004. Further these emission limits were tightened recently and reduced the emissions from diesel engines. Concerned authorities implemented the revised emission norms with effective from July 2014. The reduction in NOx+HC emission is around 62% for the engines having rated power above 75 kW.
2015-01-01
Journal Article
2014-01-9102
Mauro Madonia, Antonio Di Furia, Samantha Bonasia, Dean Vucinic
Abstract This paper presents a structural analysis of an engine chassis for a disc-shaped airship demonstrator. The objective was to verify such design solutions for application in the European Union's MAAT (Multibody Advanced Airship for Transport) project. In many airship designs, the engines are attached to the airship frame, located inside the balloon, in order to allow for thrust vector control. These airships have aerodynamic control surfaces to improve maneuverability. For the demonstrator, three engines are considered, with a non-rigid internal structure for their attachment. The engines are located on a horizontal plane (the symmetry plane of the balloon), with two lateral engines and one in front of the balloon. The chassis installation allows the engines to be attached either directly to the exterior envelope by using Kevlar connections, or to the central structural pipe.
2014-11-11
Technical Paper
2014-32-0004
Yuma Ishizawa, Munehiro Matsuishi, Yasuhide Abe, Go Emori, Akira Iijima, Hideo Shoji, Kazuhito Misawa, Hiraku Kojima, Kenjiro Nakama
Abstract One issue of Homogeneous Charge Compression Ignition (HCCI) engines that should be addressed is to suppress rapid combustion in the high-load region. Supercharging the intake air so as to form a leaner mixture is one way of moderating HCCI combustion. However, the specific effect of supercharging on moderating HCCI combustion and the mechanism involved are not fully understood yet. Therefore, experiments were conducted in this study that were designed to moderate rapid combustion in a test HCCI engine by supercharging the air inducted into the cylinder. The engine was operated under high-load levels in a supercharged state in order to make clear the effect of supercharging on expanding the stable operating region in the high-load range. HCCI combustion was investigated under these conditions by making in-cylinder spectroscopic measurements and by analyzing the exhaust gas using Fourier transform infrared (FT-IR) spectroscopy.
2014-11-11
Technical Paper
2014-32-0075
Kazuyoshi Shimatani
Abstract Various sensors including throttle position sensors (TPS), manifold pressure sensors (MPS), crank angle sensors, engine temperature sensors, and oxygen sensors are mounted in electronically controlled fuel injection (FI) systems to accurately regulate the air-fuel ratio according to the operating state and operating environment. Among these vehicle-mounted sensors, TPS has functions for detecting a fully-closed throttle and estimating intake air volume by the amount of throttle opening. Currently, we have conducted a study on transferring TPS functions into the MPS (manifold pressure sensor) in order to eliminate the TPS. Here we report on detecting a fully-closed throttle for achieving fuel cut control (FCC) and idle speed control (ISC) in fuel injection systems. We contrived a means for fully-closed throttle detection during ISC and controlling changes in the bypass opening during FCC in order to accurately judge each fully-closed throttle state via the manifold pressure.
2014-11-11
Journal Article
2014-32-0091
Kazushi Tamura, Toshimasa Utaka, Hideki Kamano, Norikuni Hayakawa, Tomomi Miyasaka, Takashi Ishino, Akira Iijima, Hideo Shoji
Abstract Although metallic compounds are widely known to affect combustion in internal combustion engines, the potential of metallic additives in engine oils to initiate abnormal combustion has been unclear. In this study, we investigated the influence of combustion chamber deposits derived from engine oil additives on combustion in a spark-ignited engine. We used a single-cylinder four-stroke engine, and measured several combustion characteristics (e.g., cylinder pressure, in-cylinder ultraviolet absorbance in the end-gas region, and visualized flame propagation) to evaluate combustion anomalies. To clarify the effects of individual additive components, we formed combustion products of individual additives in a combustion chamber prior to measuring combustion characteristics. We tested three types of metallic additives: a calcium-based detergent, a zinc-based antiwear agent, and a molybdenum-based friction modifier.
2014-11-11
Technical Paper
2014-32-0061
Rama Subbu, Baskar Anthony Samy, Piyush Mani Sharma, Prasanna Mahendiran
Abstract Ride comfort, driving stability and drivability are vital factors in terms of vehicle performance and customer satisfaction. Crankshaft unbalance is a source for the vibration that reduces the vehicle performance and it needs to be controlled to some extent such that the vehicle performance will be improved. The IC engine is made up of reciprocating and rotating parts. They produce unbalance forces during their operation and produces vibration in Vehicle. The vibration reduction will be possible by minimizing these unbalance forces and by optimizing the crankshaft of the two wheeled vehicle engine design. Many researches were made to find the causes for the vibration and to reduce it. But still there is a research gap on the testing and simulation of engine components (crankshaft, connecting rod and piston assembly). In this study, an attempt is made to represent the engine vibrations and its isolation to provide a gate way for the future work on it.
2014-11-11
Technical Paper
2014-32-0063
Daniela Siano, Fabio Bozza, Danilo D'Agostino, Maria Antonietta Panza
Abstract In the present work, an Auto Regressive Moving Average (ARMA) model and a Discrete Wavelet Transform (DWT) are applied on vibrational signals, acquired by an accelerometer placed on the cylinder block of a Spark Ignition (SI) engine, for knock detection purposes. To the aim of tuning such procedures, the same analysis has been carried out by using the traditional MAPO (Maximum Amplitude of Pressure Oscillations) index and an Inverse Kinetic Model (IKM), both applied on the in-cylinder pressure signals. Vibrational and in-cylinder pressure signals have been collected on a four cylinder, four stroke engine, for different engine speeds, load conditions and spark advances. The results of the two vibrational based methods are compared and in depth discussed to the aim of highlighting the pros and cons of each methodology.
Viewing 1 to 30 of 6361

Filter

  • Range:
    to:
  • Year: