Refine Your Search

Topic

Author

Affiliation

Search Results

Technical Paper

Experimental Acoustic Analysis of a Motorcycle Dissipative Muffler in Presence of Mean Flow

2016-11-08
2016-32-0039
In recent years, the motorcycle muffler design is moving to dissipative silencer architectures. Due to the increased of restrictions on noise emissions, both dissipative and coupled reactive-dissipative mufflers have substituted the most widely used reactive silencers. This led to higher noise efficiency of the muffler and size reduction. A dissipative muffler is composed by a perforated pipe that crosses a cavity volume filled by a fibrous porous material. The acoustic performance of this kind of muffler are strictly dependent on the porosity of the perforated pipe and the flow resistivity characteristic of the porous material. However, while the acoustic performance of a reactive muffler is almost independent from the presence of a mean flow for typical Mach numbers of exhaust gases, in a dissipative muffler the acoustic behaviour is strictly linked to the mass flow rate intensity.
Technical Paper

Design and Development of Tunable Exhaust Muffler for Race Car

2016-02-01
2016-28-0188
The Exhaust Noise is one of the major noise pollutants. It is well-known that for higher noise reduction, the engine has to bear high back pressure. For a race car, back-pressure plays a major role in engine's performance characteristics. For a given condition of engine rpm & load, conventional muffler has a fixed value of back-pressure and noise attenuation. Better acceleration requires low back-pressure, but the exhaust noise should also be less than the required (Norm) value (110 dBA). This contradicting condition is achieved here by using a ‘Butterfly Valve’ in this novel exhaust muffler. The butterfly valve assumes 2 positions i.e. fully open & fully closed. When the valve is fully closed, the noise reduction will be higher, but the back-pressure will also shoot up. When open, noise reduction will be less and so the back-pressure. So, when better performance is required, the valve is opened and back-pressure is reduced. The muffler is designed for a 4 cylinder 600 cc engine.
Technical Paper

Improving Fuel Economy of Thermostatic Control for a Series Plugin-Hybrid Electric Vehicle Using Driver Prediction

2016-04-05
2016-01-1248
This study investigates using driver prediction to anticipate energy usage over a 160-meter look-ahead distance for a series, plug-in, hybrid-electric vehicle to improve conventional thermostatic powertrain control. Driver prediction algorithms utilize a hidden Markov model to predict route and a regression tree to predict speed over the route. Anticipated energy consumption is calculated by integrating force vectors over the look-ahead distance using the predicted incline slope and vehicle speed. Thermostatic powertrain control is improved by supplementing energy produced by the series generator with regenerative braking during events where anticipated energy consumption is negative, typically associated with declines or decelerations.
Magazine

Automotive Engineering: April 2022

2022-04-01
Airing on the side of innovation Lucid Motors' home-grown innovations are leading the pace in electrification. Top engineers tell how and why they're building a benchmark with the new Air EV. Keeping combustion in the conversation The world needs ICEs to stick around - here's how. Engineering a 'Maverick' hybrid transmission Ford Powertrain engineers marry their new in-house electric machine with the proven HF45 transmission - under aggressive vehicle program timing. Driving electrified powertrain systems design Drive System Design punches beyond its weight class in meeting customer needs for electrified powertrain systems engineering services. DSD's North American chief Jon Brentnall explains.
Magazine

Automotive Engineering: November/December 2020

2020-11-26
Volkswagen reveals its 'people's' EV VW's ID.4 leads the 2021 stampede to electrification for the mass market. Answering the fuel-cell compressor question The optimum compressor device for a fuel cell depends on vehicle application - and a lot more. An Eaton expert explains. Tire pressure's impact on EV driving range A new study shows that tighter control of tire-pressure loss can lead to marked improvement in electric-vehicle efficiency. Editorial Warm socks for the EV options list Supplier Eye For suppliers, a new drumbeat New SAE wireless charging standard is EV game-changer Tula DMD aims for more-efficient e-machines Multiphysics helps transform modeling, simulation Is the camshaft being timed out? New Magna seat puts connectivity in the second row BMW reveals its first "M" performance-badged two-wheeler Volkswagen readies new-generation Golf R Q&A Discussing safety tech, standards and industry trends with Hyundai North America's Brian Latouf
Magazine

Automotive Engineering: July/August 2020

2020-07-30
2021 Mustang Mach-E Ford's first dedicated electric platform reveals the challenges and opportunities in developing a state-of-the-art EV. E-Motorcycle project pushes battery boundaries For Triumph's TE-1 project, new materials and cell technologies target greater energy density and overall performance. Williams Advanced Engineering's CEO explains. Tracking the battery-market battleground Production scale, yield and new cell technologies are challenging EV battery-cell suppliers, explains an expert at IHS Markit.
Magazine

Automotive Engineering: November/December 2021

2021-12-01
High on hydrogen Through its Symbio joint venture with Michelin, Faurecia expands far beyond its interior-systems base into the fuel-cell future. Simulating a faster route to ADAS and AV validation With its new cloud-based Simphera platform, dSpace responds to demand from global automated-vehicle development teams to help manage their expanding, complex workload. Innovating the methanol fuel cell Using methanol as the source fuel provides an alternative to a gaseous-hydrogen distribution and storage infrastructure, among other potential benefits. Engineering the 2022 Toyota Tundra Chief Engineer Mike Sweers talks structure, materials and a different approach to hybrid power.
Magazine

Automotive Engineering: October 2021

2021-10-01
BYD's Blade Runner The Chinese mobility-and-energy giant's novel 'Blade' battery eliminates the cell module level to compete with NCM chemistry at significantly lower cost - and greater proven safety. Making UX easy on the eyes Faurecia IRYStec combined physiology and image processing to create uniquely personalized high-fidelity screen displays, as pioneered by Mercedes' MBUX. The company's founder explains. Extending the Wankel's future on hydrogen fuel Proven in thousands of military drone aircraft, the lightweight and power-dense Wankel rotary still aims for a future...as a zero-emissions range extender. 'Retuning' lubricants for EV duty Lubrizol's top grease expert talks about how the electric vehicle trend is driving innovations and creating opportunities.
Magazine

Automotive Engineering: June 2021

2021-06-03
Teardown Titan Munro & Associates is leading competitive analysis into the EV age - and spreading the gospel with a global YouTube fan base. Lightweight steel on a (cold) roll A newly developed high-strength steel for cold stamping aims to beat aluminum for EV battery enclosures and other vehicle applications. How EVs and their electronics stick together New adhesives play an increasingly vital role in vehicle structures, battery packs, and in protecting sensitive electronic components from extreme thermal cycling and contaminants. Editorial Farewell and thanks, Mr.
Magazine

Automotive Engineering: April 2021

2021-04-01
Optimizing hybrids for cost and fficiency AVL engineers detail a modular engine program suitable for all forms of hybridization. ICE: Once more, with feeling BorgWarner CSO sees at least one more generation of the ICE before its 'sunset.' Actuating hybrid and EV efficiency More sophisticated driveline-disconnect systems are part of the electrified-vehicle future, says the head of controls at Stoneridge. The world's piston maker charts the ICE future According to Mahle's research VP, the remaining development path for internal combustion is clean, electrified and ready for alternative fuels. Pumping EV heat Heat-pump technology is a game-changer for the widespread adoption of electric vehicles, says a service-tech training expert and EV owner.
Magazine

Automotive Engineering: January/February 2021

2021-01-28
Gearing EVs for greater efficiency Ingear, an innovative 2-speed transmission born in Canada, aims to unlock electric-vehicle performance and efficiency. Built-in Google vehicle apps arrive Android Automotive OS opens the door, cautiously, for third-party developers. Riding on air: Activated carbon aims at autos An old piece of science is set to bring new applications across the mobility spectrum. Allison builds a testing powerhouse Allison Transmission's new Vehicle Environmental Test center in Indianapolis is open for business for external and in-house customers alike. The VET has everything vehicle development teams need to improve testing efficiencies. Editorial The EVs are coming. Now what?
Book

Manual Transmission Clutch Systems

1997-02-01
This book serves as a basic clutch design handbook by covering present and future clutch technologies related to passenger cars and light duty trucks. Chapters cover: History of Clutches Introduction to Modern Diaphragm Spring Clutch Basic Diaphragm Clutch Operating Principles Terminology and Definitions Clutch Operating Parameters Clutch Sizing for Manual Transmission System Engagement Quality Torsional Vibration and Tuning Capacity Testing Clutch Troubleshooting Clutch Quality Control Clutch Friction Materials Clutch Rebuilding and Remanufacturing Clutch Actuation Systems
Book

Universal Joint and Driveshaft Design Manual

1979-01-01
This publication presents information on technological developments regarding universal joints, including details on design and application practices which have proven to be successful. Subjects covered include: all power transmitting mechanisms classified as universal joints - both the constant and nonconstant velocity types the most commonly used driveshaft arrangements applications requiring the transmission of power from the power source to a drivetrain member; drivetrain disturbances analytical procedures for design analysis, evaluation and application
Book

Design Practices: Passenger Car Automatic Transmissions

2012-05-22
Since the mid-20th Century, automatic transmissions have benefited drivers by automatically changing gear ratios, freeing the driver from having to shift gears manually. The automatic transmission's primary job is to allow the engine to operate in its speed range while providing a wide range of output (vehicle) speeds automatically. The transmission uses gears to make more effective use of the engine's torque and to keep the engine operating at an appropriate speed. For nearly half a century, Design Practices: Passenger Car Automatic Transmissions has been the “go-to” handbook of design considerations for automatic transmission industry engineers of all levels of experience. This latest 4th edition represents a major overhaul from the prior edition and is arguably the most significant update in its long history. In summary, the authors have put together the most definitive handbook for automatic transmission design practices available today.
SAE MOBILUS Subscription

SAE International Journal of Commercial Vehicles

2017-01-01
Editor-in-Chief: Dr. Thomas W. Ryan III, USA Indexed in CNKI ESCI (Emerging Sources Citation Index, Web of Science) Engineering Village (Ei Compendex) IET Inspec Japan Science and Technology (JST) Agency JSTOR Sustainability Collection Scopus 5.4 2020CiteScore   82nd percentile Powered by   Author Resources Call for Papers Library Recommendation Form Published Volumes Subscription Options Aims and Scope The SAE International Journal of Engines is a scholarly, peer-reviewed research Journal dedicated to internal combustion engine science and engineering. The Journal spotlights innovative and archival technical reports on all aspects of internal combustion engine development, including research, design, analysis, control, and emissions.
SAE MOBILUS Subscription

SAE International Journal of Engines

2017-01-01
Editor-in-Chief: Nadir Yilmaz, Ph.D., Howard University, USA Indexed in CNKI ESCI (Emerging Sources Citation Index, Web of Science) Engineering Village (Ei Compendex) IET Inspec Japan Science and Technology (JST) Agency JSTOR Sustainability Collection Scopus 4.5 2020CiteScore   65th percentile Powered by   Author Resources Call for Papers Library Recommendation Form Published Volumes Subscription Options Aims and Scope The SAE International Journal of Fuels and Lubricants is a leading international scholarly journal providing reports of research with focus on fuels and lubricants in automotive engineering. The Journal aims to be the primary source of information for comprehensive and innovative research in the areas of fuels, lubricants, additives, and catalysts, by providing a peer-reviewed platform for academicians, scientists, and industrial researchers to present their work.
SAE MOBILUS Subscription

SAE International Journal of Electrified Vehicles

2020-05-20
Call for Papers for Special Issue on Eco-driving of Connected Electrified Vehicles in Intelligent Transportation Systems Editor-in-Chief: Simona Onori, Ph.D., Stanford University, USA Indexed in CNKI Engineering Village (Ei Compendex) ESCI (Emerging Sources Citation Index, Web of Science) IET Inspec Japan Science and Technology (JST) Agency JSTOR Sustainability Collection Scopus 2.7 2020CiteScore   62nd percentile Powered by   Author Resources Call for Papers Library Recommendation Form Published Volumes for Electrified Vehicles Published Volumes for Alternative Powertrains Subscription Options Aims and Scope The SAE International Journal of Electrified Vehicles (formerly SAE International Journal of Alternative Powertrains) provides a forum for peer-reviewed scholarly publication of original research and survey papers that address novel modeling tools, control and optimization methods applied to components, systems, and technologies concerning electrified powertrains (hybrid or full electric)—ground, aerial, and naval.
Book

SAE Oil Filter Test Procedure

2009-10-13
The purpose of this lubrication oil filter test code is to provide means for evaluating the performance characteristics of full-flow oil filters on bench equipment. This combined with data collected from "in service" applications, may be used for establishing standard or performance for filters tested in this manner.
Book

Principles of Engine Cooling Systems, Components and Maintenance

1990-10-01
Completely revised as a result of the significant progress made in cooling system design and maintenance practices and procedures, HS-40 provides current, comprehensive information on the description, function, and maintenance of engine liquid-cooling systems used in light and heavy-duty vehicles. Information-packed chapters discuss the interrelation between the cooling system and other engine systems, cooling system components, general preventive maintenance, and troubleshooting.
Book

SAE Manual for Incorporating Pneumatic Springs in Vehicle Suspension Designs

1994-09-01
The extensive and increasing use of pneumatic springs in automotive applications has made it appropriate that this manual be prepared to assist the engineer and the designer in understanding the basic principles and uses of pneumatic springs. This manual provides descriptions of the principles involved in pneumatic spring function along with details of the various configurations of pneumatic spring devices and the unique characteristics of each. Pneumatic spring types have been defined correlating with SAE J511 in the SAE (Oct. 1970) handbook regarding pneumatic spring terminology. Background information tracing the evolution of pneumatic springs has been included, as well as some specific examples of design calculations to serve as a guideline for the designer.
X