Your Selections

Northeastern Univ.
Show Only


File Formats

Content Types









Alternative Porous Media and Designs for Automotive Oil Filters

SAE International Journal of Fuels and Lubricants

Northeastern Univ.-Yiannis A. Levendis
  • Journal Article
  • 2013-01-0492
Published 2013-04-08 by SAE International in United States
Alternative automotive engine oil filtration devices are described herein, aiming at alleviating the environmental issues caused by conventional one-piece, spin-on, throwaway filters. The spin-on feature has been retained in these novel filters, to facilitate retrofitting, however provisions to dismantle the filter have been incorporated to allow for periodic replacement of the filter element (cartridge). The filter element is made of ceramic powder and, upon replacement, it may be treated and reused as such, or it may be crushed, treated and remanufactured from the recycled powder. In the process, the entirety of the used motor oil may be retrieved, treated and reused, thus conserving energy and resources, minimizing waste streams and, most importantly, preventing environmental ground-water contamination. The ceramic filter element (made of silicon carbide, cordierite or mullite) is extruded in the typical configuration of a honeycomb-shaped monolith, with adjacent channels plugged at alternate ends. The element is housed in an easy-to-dismantle casing. The filter element may be replaced at every vehicle oil change, but not the casing which is intended to last the lifetime of…
Annotation icon

Design and Testing of a Novel Environmentally-Benign Automotive Oil Filter

Northeastern Univ.-Yiannis A. Levendis
Published 2010-04-12 by SAE International in United States
This paper describes the design, construction and operation of a novel environmentally-friendly automotive oil filter. Whereas conventional paper media spin-on oil filters are inexpensive and easy to use, they are hard to recycle because of their rugged construction and dissimilar material contents. Used oil filters are disposed off at an annual rate of half a billion in the US alone. They typically end up in municipal waste streams, thereby creating both a solid waste issue and a ground waste contamination issue, as discarded filters invariably contain residual amounts of waste oil. To address these issues, the objective of this work has been to design an environmentally-friendly oil filter. Such a filter is composed of a permanent, but dismantable, filter housing and a replaceable cartridge. The cartridge is made of ceramic honeycomb which can be produced to possess excellent filtration efficiency. Upon replacement, the used ceramic cartridge may be readily crushed to recover all the contaminated used motor oil. The remaining ceramic powder may be treated and re-used. Prototypes were designed, constructed and tested using silicon…
Annotation icon

Analysis and Amendment on the Dynamic Deviation of the Belt-type (or Chain-type) CVT

Northeastern Univ.-Cheng Naishi, Lui Wen, Zhang Weihua
  • Technical Paper
  • 2004-40-0059
Published 2004-08-23 by University of California-Davis in United States
The deviation of the symmetric axis of the belt (or chain) to the vertical plane of the transmission shaft can occurs in the process of speed change of belt CVT or chain CVT. It can lead to the reducing of transmission service life, so far as to become invalid. In this paper, a quantitative analysis on the deviation has been made, and a design method of correct generatrix of the cone disc and an example are given.

The Match Design of the Belt-type or Chain-type CVT’s Cone Discs and Flexible Members

Northeastern Univ.-Cheng Naishi, Zhang Weihua
  • Technical Paper
  • 2004-40-0058
Published 2004-08-23 by University of California-Davis in United States
The paper aims at the axial deviation and twists of the middle flexible member when using the straight generatrix cone disc, and puts forward a match design methods of the cone disc and the flexible member. The method is to choose a curve with simple shape and can be processed easily as the profile of the flexible members, and calculating it’s conjugate curve as the cone disc’s generatrix according to the principle of conjugate curve and the constrain condition of the flexible members’ parallel moving along the shaft as a whole. The method avoids the flexible member’s axial deviation when transmitting on design principle. The paper brings forward the equations and computation example of the cone disc generatrix which matches the flexible member with arc curve profile and the one with line and arc combined curve profile, and analyses the value of the design parameter and it’ influence on the transmission performance.

A bipod helical drill point grinding machine

Northeastern Univ.-P. Zou
  • Technical Paper
  • 2001-04-0066
Published 2001-01-01 by Institution of Mechanical Engineers in United Kingdom
A kinematics analysis and mechanism description of a novel bipod parallel grinder with six-controlled degree of freedom is presented in this paper. In comparison with hexapod machines, the mechanical structure and motion of this bipod parallel grinder is simple. Therefore, it's easy for this bipod parallel grinder to accomplish real- time control. Because of using the parallel constant- length links, thermal deformation effects on accuracy of this grinder will be diminished. In addition to grinding, this grinder can be used for welding, painting, fixturing, material handling and so on.

Modelling and algorithm for finished product delivery in steel plants

Northeastern Univ.-J. Song, G. Hu, S. Liu, M. Wang
  • Technical Paper
  • 2001-04-0130
Published 2001-01-01 by Institution of Mechanical Engineers in United Kingdom
Based on studies of shipment scheduling problem in product delivery system in a steel plant, we built a multiobjective resource-constrained project scheduling model for this problem. Combining characteristics of genetic algorithm and simulated annealing, we design a multiobjective metaheuristics for solving it. Thorough computational study for a set of problem instances, we obtained some satisfactory results.

Economic Analysis of the Ultra Light Steel Auto Body

Northeastern Univ.-Jacqueline A. Isaacs
IBIS Associates, Inc.-Jeff R. Dieffenbach
Published 1998-09-29 by SAE International in United States
Aluminum and polymer composites have long been considered the materials of choice for achieving mass reduction in automotive structures. As consumer and government demand for mass reduction grows, the use of these materials, which have traditionally been more expensive than the incumbent steel, becomes more likely. In response to this growing challenge, the international steel community has joined forces to develop the Ultra Light Steel Auto Body (ULSAB). The resulting design saves mass and increases performance relative to current steel unibodies. Although mass savings are not as dramatic as those achieved by alternative materials, this design offers the potential to be accompanied by a manufacturing cost reduction.The projected manufacturing piece and investment cost for the ULSAB are investigated using technical cost modeling. The results presented here examine the elements that contribute to the cost, including treatments for stamping, hydroforming, assembly and purchased parts. Particular emphasis is placed on the procedure for laying out the design of the manufacturing and production facility based on the respective manufacturing processes, production rates, labor requirements, equipment and tooling costs,…
Annotation icon

An Integrated Diesel Engine ART-EGR System for Particulate/NOx Control Using Engine Sensory Inputs

Northeastern Univ.-Chris Larsen, Yiannis A. Levendis
Published 1997-02-24 by SAE International in United States
New developments for optimized control of Aerodynamically Regenerated Traps (ART) - Exhaust Gas Recirculation (EGR) integrated systems for diesel engines are presented herein. Such systems employ high-efficiency ceramic monolith filters to retain 99% of the emitted particulates. Regeneration is achieved periodically by short pulses of compressed air, flowing in the opposite direction to the exhaust. The soot is collected in a chamber, outside of the monolith, where it is oxidized with an electric burner. A fraction of the filtered exhaust is returned to the engine and this reduces NOx emissions, typically, by more than 50% at 18% EGR. However, since the amount of EGR, the frequency of regeneration and the frequency and duration of burning have a bearing on the fuel consumption of the engine, their optimization is imperative. Thus, provisions were made to collect intelligent information, leading to continuous assessment of the engine performance and fuel economy. Sensory inputs are recorded from the alternator, to assess the engine speed, from flow meters, to measure the air and fuel intake of the engine, from a…
Annotation icon

Effect of visual display parameters on driving performance in a virtual environments driving simulator

Northeastern Univ.-Oren H. Levine, Ronald R. Mourant
  • Technical Paper
  • 1996-14-0062
Published 1996-08-26 by Human Factors and Ergonomics Society in United States
In virtual environment applications, there is a tradeoff between the quality of the graphic image and the speed at which the application runs. In driving simulation, the content and quality of the visual image are particularly important, which suggests that there are limits to the degree they can be reduced.A virtual environments driving simulator was used to investigate the effects of visual display parameters on driver performance and perception. A road tracking study compared two display devices, two rendering algorithms, and three levels of road side delineation poles. Subjects drove the simulator through a series of road courses, and answered questionnaires designed to evaluate their perception of the realism of the simulator and the sense of immersion in the virtual environment.The results of the study confirm previous work on the beneficial effects of road side delineation poles on driving performance. They also suggest the importance of lag in the perception of driving performance and immersion, and the importance of shaded images in actual driving task performance.

An Optimization Study on the Control of NOx and Particulate Emissions from Diesel Engines

Northeastern Univ.-Chris Larsen, Frederick Oey, Yiannis A. Levendis
Published 1996-02-01 by SAE International in United States
This is an optimization study on the use of filtered exhaust gas recirculation (EGR) to reduce the NO emissions of diesel engines. Control of the particulate emissions and provisions for filtered EGR were achieved by an Aerodynamically Regenerated Trap (ART) with collection efficiencies in the order of 99%. The amount of EGR was regulated to provide for substantial NO reduction, without unacceptably decreasing the thermal efficiency of the engine or increasing the CO emissions. EGR regulation was accomplished by monitoring the injection pump setting which was correlated to the fuel flow rate, the speed of the engine, the amount of EGR flow, and the ambient air temperature. Through these parameters, the mixture strength expressed as the equivalence ratio, ϕ, was calculated and related to the power output of the engine. Thus, a map of engine performance parameters was generated and related to measured NO and CO emissions. A series of road tests showed that EGR most effectively reduces NO emissions at high ϕ's (by a factor of two at 20% EGR) which, however, is accompanied…
Annotation icon