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Printed journal · Electronic Journal

SAE technical paper series

(translated: SAE TECHNICAL PAPERS)

Language: English
Publisher: Society of Automotive Engineers
ISSN: 26883627 and 01487191
Types: Printed journal and Electronic Journal
Keywords

Aerospace and Aeronautics Engineering

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Previous issue Next issue

2014

Journal article · Conference paper

Modeling and Simulating Progressive Failure in Composite Structures for Automotive Applications

Michaël, Bruyneel ; Philippe, Jetteur ; Jean Pierre, Delsemme ; Saeed, Siavoshani ; Anthony, Cheruet

In this paper, it is explained how composite structures, made of continuous fibers embedded in a polymer matrix, are designed and analyzed in the aerospace industry.The strategy is based on the building block approach, in which the knowledge on the composite material and structure is built step by step from the coupon level up to the final full scale structure.Damage is then discussed, as it ca...

Language: English

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Conference paper

Effects of Data Quality Reduction on Feedback Metrics for Advanced Combustion Control

Kaul, Brian C. ; Lawler, Benjamin J. ; Finney, Charles E.A. ; Edwards, Michelle L. ; Wagner, Robert M.

Language: Undetermined

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Journal article · Conference paper

A Comparative Analysis on the Spray Penetration of Ethanol, Gasoline and Iso-Octane Fuel in a Spark-Ignition Direct-Injection Engine

Yongming, Bao ; Qing Nian, Chan ; Sanghoon, Kook ; Evatt R., Hawkes

The spray development of ethanol, gasoline and iso-octane has been studied in an optically accessible, spark-ignition direct-injection (SIDI) engine.The focus is on how fuel properties impact temporal and spatial evolution of sprays at realistic ambient conditions.Two optical facilities were used:(1) a constant-flow spray chamber simulating cold-start conditions and (2) a single-cylinder SIDI e...

Language: English

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Conference paper · Journal article

A LES Study on the Evolution of Turbulent Structures in Moving Engine Geometries by an Open-Source CFD Code

Montorfano, Andrea ; Piscaglia, Federico ; Onorati, Angelo

The dynamics and evolution of turbulent structures inside an engine-like geometry are investigated by means of Large Eddy Simulation.A simplified configuration consisting of a flat-top cylinder head with a fixed, axis-centered valve and low-speed piston has been simulated by the finite volume CFD code OpenFOAM ® ; the standard version of the software has been extended to include the compressibl...

Language: Undetermined

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Journal article · Conference paper

Contribution of Road Grade to the Energy Use of Modern Automobiles Across Large Datasets of Real-World Drive Cycles

Eric, Wood ; Evan, Burton ; Adam, Duran ; Jeffrey, Gonder

Understanding the real-world power demand of modern automobiles is of critical importance to engineers using modeling and simulation in the design of increasingly efficient powertrains.Increased use of global positioning system (GPS) devices has made large-scale data collection of vehicle speed (and associated power demand) a reality.While the availability of real-world GPS data has improved th...

Language: English

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Journal article · Conference paper

Optimisation of Alumina Coated Lightweight Brake Rotor

Abdulwahab A., Alnaqi ; Suman, Shrestha ; D.C., Barton ; Peter C., Brooks

Aluminium alloys have been used extensively in the automotive industry to reduce the weight of a vehicle and improve fuel consumption which in turn leads to a reduction in engine emissions.The main aim of the current study is to replace the conventional cast iron rotor material with a lightweight alternative such as coated aluminium alloy.The main challenge has been to meet both the cost and fu...

Language: English

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Conference paper · Journal article

The Nature of Heat Release in Gasoline PPCI Engines

Sang, Wenwen ; Cheng, Wai K. ; Maria, Amir

The heat release characteristics in terms of the maximum pressure rise rate (MPRR) and combustion phasing in a partially premixed compression ignition (PPCI) engine are studied using a calibration gasoline.Early port fuel injection provides a nearly homogeneous charge, into which a secondary fuel pulse is added via direct injection (DI) to provide stratification which is affected by the timing ...

Language: Undetermined

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Journal article · Conference paper

Empirical Lumped-mass Approach to Modelling Heat Transfer in Automotive Turbochargers

Christopher, Bannister

When evaluating the performance of new boosting hardware, it is a challenge to isolate the heat transfer effects inherent within measured turbine and compressor efficiencies.This work documents the construction of a lumped mass turbocharger model in the MatLab Simulink environment capable of predicting turbine and compressor metal and gas outlet temperatures based on measured or simulated inlet...

Language: English

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Journal article · Conference paper

Physics-Based Models, Sensitivity Analysis, and Optimization of Automotive Batteries

Joydeep, Banerjee ; John, McPhee ; Paul, Goossens ; Thanh-Son, Dao

The analysis of nickel metal hydride (Ni-MH) battery performance is very important for automotive researchers and manufacturers.The performance of a battery can be described as a direct consequence of various chemical and physical phenomena taking place inside the container.In this paper, a physics-based model of a Ni-MH battery will be presented.To analyze its performance, the efficiency of th...

Language: English

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Journal article · Conference paper

Numerical Modelling of Mixture Formation and Combustion in DISI Hydrogen Engines with Various Injection Strategies

Arash, Hamzehloo ; Pavlos, Aleiferis

International obligations to reduce carbon dioxide emissions and requirements to strengthen security of fuel supply, indicate a need to diversify towards the use of cleaner and more sustainable fuels.Hydrogen has been recommended as an encouraging gaseous fuel for future road transportation since with reasonable modifications it can be burned in conventional internal combustion engines without ...

Language: English

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Journal article · Conference paper

Improving Safety Structures on Sprint and Midget Race Cars

Grant, Hankins ; Kenneth, Krajnik ; Bradley, Galedrige ; Shahab, Sakha ; Peter, Hylton ; Wendy, Otoupal

Language: English

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Journal article · Conference paper

Crevice Volume Effect on Spark Ignition Engine Efficiency

Patrick, Smith ; Wai K., Cheng ; John B., Heywood

Language: English

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Conference paper · Journal article

Hybrid Environmental Control System Integrated Modeling Trade Study Analysis for Commercial Aviation

Parrilla, Javier A.

Language: Undetermined

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Conference paper · Journal article

In Situ Control of Lubricant Properties for Reduction of Power Cylinder Friction through Thermal Barrier Coating

Molewyk, Mark ; Wong, Victor W. ; James, Christopher

Language: Undetermined

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Conference paper · Journal article

Smoke Reduction Effects by Post Injection for Various Injection Parameters and Combustion Chamber Shapes in a Diesel Engine

Horibe, Naoto ; Komizo, Tatsuya ; Sumimoto, Takashi ; Wang, Hao ; Ishiyama, Takuji

A series of experiments using a single-cylinder direct injection diesel engine was conducted to investigate the smoke reduction effect of post injection while varying numerous parameters: the post-injection quantity, post-injection timing, injection pressure, main-injection timing, intake pressure, number of injection nozzle orifices, and combustion chamber shape.The experiments were performed ...

Language: Undetermined

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Journal article · Conference paper

Characterization of Flywheel Energy Storage System for Hybrid Vehicles

Aditya, Dhand ; Keith, Pullen

Flywheels are excellent secondary energy storage devices and several applications in road vehicles are under development.They can be used in hybrid vehicles with an internal combustion engine (ICE) as the prime mover or can be used in hybrid energy storage (HES) to complement the battery.When used in HES, they are utilized to load level the battery so as to protect it from peak loads and enhanc...

Language: English

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Conference paper · Journal article

Effect of Compression Ring Elastodynamics Behaviour upon Blowby and Power Loss

Baker, Christopher ; Rahmani, Ramin ; Karagiannis, Ioannis ; Theodossiades, Stephanos ; Rahnejat, Homer ; Frendt, Alan

The automotive industry is subject to increasing pressure to reduce the CO 2 emissions and improve fuel efficiency in internal combustion engines.Improvements may be achieved in a number of ways.The parasitic losses throughout the engine cycle emanate from friction in all engine contact conjunctions in addition to pumping losses.In particular one main contributory conjunction is the piston ring...

Language: Undetermined

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Journal article · Conference paper

Investigation of Cylinder Deactivation and Variable Valve Actuation on Gasoline Engine Performance

Chavithra, Kuruppu ; Apostolos, Pesiridis ; Srithar, Rajoo

Increasingly stringent regulations on gasoline engine fuel consumption and exhaust emissions require additional technology integration such as Cylinder Deactivation (CDA) and Variable valve actuation (VVA) to improve part load engine efficiency.At part load, CDA is achieved by closing the inlet and exhaust valves and shutting off the fuel supply to a selected number of cylinders.Variable valve ...

Language: English

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Conference paper · Journal article

Managing Loads on Aircraft Generators to Prevent Overheat In-Flight

Graham, James H. ; Dixon, Roger ; Hubbard, Peter ; Harrington, Ian

On future UAVs it is envisaged that the power requirements of all on-board electrical systems will increase.Whilst, in most flight (mission) situations the installed generation capacity will have adequate capacity to operate the systems, it is possible that during certain abnormal situations the generators on-board may be forced to operate under very high load conditions.The main failure mechan...

Language: Undetermined

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Conference paper · Journal article

The Effect of Cylinder De-Activation on Thermo-Friction Characteristics of the Connecting Rod Bearing in the New European Drive Cycle (NEDC)

Mohammadpour, Mahdi ; Rahmani, Ramin ; Rahnejat, Homer

The effect

Language: Undetermined

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Journal article · Conference paper

LES of Flow Processes in an SI Engine Using Two Approaches: OpenFoam and PsiPhi

Thuong, Nguyen ; Peter, Janas ; Tommaso, Lucchini ; Gianluca, D’Errico ; Sebastian A., Kaiser ; Andreas, Kempf

In this study two different simulation approaches to large eddy simulation of spark-ignition engines are compared.Additionally, some of the simulation results are compared to experimentally obtained in-cylinder velocity measurements.The first approach applies unstructured grids with an automated meshing procedure, using OpenFoam and Lib-ICE with a mapping approach.The second approach applies th...

Language: English

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Conference paper

Investigation of Chemical Kinetics on Soot Formation Event of n-Heptane Spray Combustion

Pang, Kar Mun ; Jangi, Mehdi ; Bai, Xue-Song ; Schramm, Jesper

In this reported work, 2-dimsensional computational fluid dynamics studies of n-heptane combustion and soot formation processes in the Sandia constant-volume vessel are carried out. The key interest here is to elucidate how the chemical kinetics affects the combustion and soot formation events. Numerical computation is performed using OpenFOAM and chemistry coordinate mapping (CCM) approach is ...

Language: English

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Journal article · Conference paper

Numerical Flow Analysis of a Centrifugal Compressor with Ported and without Ported Shroud

Bernhard, Semlitsch ; V., Jyothishkumar ; Mihai, Mihăescu ; László, Fuchs ; Ephraim, Gutmark ; Matthieu, Gancedo

Turbochargers are commonly used in automotive engines to increase the internal combustion engine performance during off design operation conditions. When used, a most wide operation range for the turbocharger is desired, which is limited on the compressor side by the choke condition and the surge phenomenon. The ported shroud technology is used to extend the operable working range of the compre...

Language: English

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Journal article · Conference paper

An Electric Scooter with Super-Capacitor Drive and Regenerative Braking

Li, Sun ; Mohamed, Awadallah ; Lianhua, Chi ; Nong, Zhang

Language: English

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Journal article · Conference paper

Turboelectric Distributed Propulsion Protection System Design Trades

Christine, Ross ; Michael J., Armstrong ; Mark, Blackwelder ; Catherine, Jones ; Patrick, Norman ; Steven, Fletcher

The Turboelectric Distributed Propulsion (TeDP) concept uses gas turbine engines as prime movers for generators whose electrical power is used to drive motors and propulsors.For this NASA N3-X study, the motors, generators, and DC transmission lines are superconducting, and the power electronics and circuit breakers are cryogenic to maximize efficiency and increase power density of all associat...

Language: English

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Journal article · Conference paper

The State of the Art in Selective Catalytic Reduction Control

Zakwan, Skaf ; T.A., Aliyev ; Leo, Shead ; Thomas, Steffen

Selective Catalytic Reduction (SCR) is a leading aftertreatment technology for the removal of nitrogen oxide (NOx) from exhaust gases (DeNOx).It presents an interesting control challenge, especially at high conversion, because both reagents (NOx and ammonia) are toxic, and therefore an excess of either is highly undesirable.Numerous system layouts and control methods have been developed for SCR...

Language: English

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Conference paper

Quantitative Spatially Resolved Measurements of Total Radiation in High-Pressure Spray Flames

Skeen, Scott ; Manin, Julien ; Pickett, Lyle ; Dalen, Kristine ; Ivarsson, Anders

Language: Undetermined

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Conference paper · Journal article

Model-Based Thermal Management Functions for Aircraft Systems

Schlabe, Daniel ; Lienig, Jens

This paper describes a novel Thermal Management Function (TMF) and its design process developed in the framework of the Clean Sky project. This TMF is capable of calculating optimized control signals in real-time for thermal management systems by using model-based system knowledge. This can be either a physical model of the system or a data record generated from this model. The TMF provides con...

Language: Undetermined

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Conference paper · Journal article

Influence of Active Subsystems on Electric Vehicle Behavior and Energy Characteristics

Shyrokau, Barys ; Savitski, Dzmitry ; Wang, Danwei

Nowadays there is a tendency to implement various active vehicle subsystems in a modern vehicle to improve its stability of motion, handling, comfort and other operation characteristics.Since each vehicle subsystem has own limits to generate supporting demand, their potential impact on vehicle dynamics should be analyzed for steady-state and transient vehicle behavior.Moreover, the additional r...

Language: Undetermined

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Conference paper · Journal article

Kalman Filter Based Estimation Algorithm to Improve the Accuracy of Automobile GPS Navigation Solution

Srinivasaiah, Bhavani ; Tiwari, Rajesh ; Dhinagar, Samraj

The demand for location based services in automobile industry promoting applications in the area of telematics, vehicle to vehicle and infrastructure communications is encouraging research in the field of accurate navigation solutions.According to the ABI research, position data is the prime enabler for above mentioned applications and the in-car navigation market growth is predicted to grow at...

Language: Undetermined

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Journal article · Conference paper

Optimal Control Allocation for Electric Aircraft Taxi Systems: A Preliminary Study

Fabrizio, Re

Demonstrators and research projects about electric aircraft taxi systems testify the current interest in low-or zero-emission ground propulsion technologies to lower the overall fuel consumption and emissions of commercial flights.Electric motors fitted in the main landing gears are one of the most promising layouts for these systems especially for narrow-body commercial aircraft.From a control...

Language: English

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