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Sunday, April 26, 2020 | History

3 edition of Aerodynamic resistance reduction of electric and hybrid vehicles found in the catalog.

Aerodynamic resistance reduction of electric and hybrid vehicles

California Institute of Technology, Pasadena. Jet Propulsion Laboratory

Aerodynamic resistance reduction of electric and hybrid vehicles

a progress report, September 1978

by California Institute of Technology, Pasadena. Jet Propulsion Laboratory

  • 13 Want to read
  • 38 Currently reading

Published by Dept. of Energy, Assistant Secretary for Conservation and Solar Applications, Office of Transportation Programs, for sale by the National Technical Information Service in Washington, Springfield, Va .
Written in English

    Subjects:
  • Drag (Aerodynamics),
  • Automobiles, Electric.,
  • Motor vehicles.

  • Edition Notes

    Statementprepared by Jet Propulsion Laboratory, Pasadena, Calif.
    SeriesHCP/M ; 5030-274
    ContributionsUnited States. Dept. of Energy. Office of Transportation Programs.
    The Physical Object
    Pagination94 p. in various pagings :
    Number of Pages94
    ID Numbers
    Open LibraryOL15228908M

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Aerodynamic resistance reduction of electric and hybrid vehicles by California Institute of Technology, Pasadena. Jet Propulsion Laboratory Download PDF EPUB FB2

@article{osti_, title = {Aerodynamic resistance reduction of electric and hybrid vehicles. Progress report, September [EHVSCD]}, author = {Not Available}, abstractNote = {The objectives, approach, and FY'78 progress and results of the Aerodynamic Resistance Reduction work element of the Electric and Hybrid Vehicle System R and D Project are described.

Get this from a library. Aerodynamic resistance reduction of electric and hybrid vehicles: a progress report, September [Jet Propulsion Laboratory (U.S.); United States. Department of Energy. Office of Transportation Programs.]. ABSTRACT. Drag reduction of road vehicles continues to be the holy grail of aerodynamicists with renewed importance of aerodynamics as OEMs strive to reduce CO 2 and improve fuel economy.

New legislation such as Worldwide harmonized Light vehicles Test Procedure (WLTP) is increasing the emphasis on real world boundary conditions (with moving ground wind tunnel testing) and vehicle.

Hybrid Electric Vehicles (HEVs) are receiving a great deal of interest around the world due to not only their promise of higher energy efficiency and reduced highway emissions, but also their. Modern Electric, Hybrid Electric, and Fuel Cell Vehicles: Fundamentals, Theory, and Design, Second Edition (Power Electronics and Applications Series) Mehrdad Ehsani, Yimin Gao, Ali Emadi a great book while learning about vehicle and engine characteristics, to then further expand on hybrid and electric vehicle applications.

Sixteen electric, hybrid, and subcompact production vehicles were tested in the Lockheed-Georgia low-speed wind tunnel. Zero-yaw drag coefficients ranged from a high of for a boxey delivery van and an open roadster to a low of about for a current four-passenger prototype automobile which was designed with aerodynamics as an integrated.

This SpringerBrief deals with the control and optimization problem in hybrid electric vehicles. Given that there are two (or more) energy sources (i.e., battery and fuel) in hybrid vehicles, it shows the reader how to implement an energy-management strategy that decides how much of the vehicle’s power is provided by each source instant by instant.

and results of the Aerodynamic Resistance Reduction work element of the Electric and Hybrid Vehicle. System R&D Project managed by.7PL for the Department of Energy. The generation of an EVH aerodynamic data base ted by conducting full--scale wind tunnel tests on.

16. The technologies that can be used to reduce fuel consumption in medium- and heavy-duty vehicles vary by vehicle type, duty cycle, and the year the technology becomes available.

For instance, a Class 8 tractor trailer operating on the interstate will benefit from technologies that improve aerodynamic performance and reduce rolling resistance. Although a reduction of approximately 7%% in the aerodynamic drag can be realized by blowing, the main drawback is the large amount of electric energy consumed to inject a high momentum air.

“advanced conventional” vehicles that retain conventional drivetrains (internal combustion engine plus transmission); electric vehicles: hybrid vehicles that com-bine electric drivetrains with an engine or other power source; and fuel cell vehi-cles.

OTA has focused. This chapter discusses the effects of aerodynamic properties and tire rolling resistance on the fuel economy of vehicles.

The basic principles of vehicle aerodynamics and tire rolling resistance are described separately in the contexts of passenger vehicles, and heavy vehicles such as trucks and vehicle combinations. Kenworth Truck Co. says its environmental-friendly and “green” commitment to producing aerodynamic fuel-efficient trucks has helped reduce emissions, fuel usage and customer operating costs.

Vehicle Body Engineering Aerodynamics Introduction: is by Air resistance & Rolling resistance • The vehicle drag is a force which resists motion and is due to ; a) the deformation of the wheel and the ground b) aerodynamic effects of air flow over the vehicle • Deformation of the wheel - the pneumatic tyres are most suitable for road.

Control of Electric Vehicle F rr T r G: gear ratio motor tire Fig. A simplified model for motor driving tyre In equation (1), the first term corresponds to the rolling resistance force; the second term corresponds to the aerodynamic dr ag force; the third term corre sponds to the hill climbingFile Size: KB.

Hybrid electric vehicles (HEVs) combine the internal combustion engine of a conventional vehicle with the high-voltage battery and electric motor of an electric vehicle. As a result, HEVs can achieve twice the fuel economy of conventional vehicles (Fig.

1).Cited by: 4. The significant increase in normalized tractive energy (ETR/MS) with decreasing rolling and aerodynamic resistances makes reduction of these resistances even more effective in reducing fuel consumption in hybrids with regenerative braking than in conventional vehicles.

The relatively small values of braking-to-tractive energy on the HWFET. Vehicle aerodynamics concerns the effects arising due to motion of the vehicle through, or relative to, the air. Its importance to road vehicles became apparent when they started to achieve higher speeds.

The automobile as we know it came onto the scene in the last decade of the nineteenth : Thomas Morel. Automotive Powertrain Technologies through and EV’sforcity vehicles Plug-in/Hybrid electric systems dominate –Mass reduction, aerodynamic improvements, rolling resistance, accessories Ricardo, EPA, ICCT, and Calif ARB identified several LDVFile Size: KB.

Energy and environmental issues --Battery electric vehicles --Hybrid vehicles --Non-conventional fuels --Hydrocarbons and oxygenated fuels --Hydrogen --Reduction of the resistance to motion --Aerodynamic drag --Rolling resistance --Vehicle mass --Innovative engines --Internal combustion engines --External combustion engines --Improving the.

The gasoline engine, electric motor and seating positions have been lowered to increase front and rear head room while at the same time achieving an aerodynamic, low stance.

A lower center of gravity and a more responsive suspension system, hallmarks. Roadway noise is the collective sound energy emanating from motor consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements. Noise of rolling tires driving on pavement is found to be the biggest contributor of highway noise which increases with higher vehicle speeds.

In developed and developing countries, roadway noise contributes a. Fully updated throughout, Electric Vehicle Technology, Second Edition, is a complete guide to the principles, design and applications of electric vehicle technology. Including all the latest advances, it presents clear and comprehensive coverage of the major aspects of electric vehicle development and offers an engineering-based evaluation of electric motor scooters, cars, buses and trains.

An electric-vehicle battery (EVB) (also known as a traction battery) is a battery used to power the electric motors of a battery electric vehicle (BEV) or hybrid electric vehicle (HEV).

These batteries are usually rechargeable (secondary) batteries, and are typically lithium-ion batteries. These batteries are specifically designed for a high ampere-hour (or kilowatt-hour) capacity.

Energy-efficient driving techniques are used by drivers who wish to reduce their fuel consumption, and thus maximize fuel use of these techniques is called "hypermiling".Simple fuel-efficiency techniques can result in reduction in fuel consumption without resorting to radical fuel-saving techniques that can be unlawful and dangerous, such as tailgating larger vehicles.

It is a well understood fact that the future of mobility is solar electric hybrid vehicles, that being said the cost of energy produced by solar arrays remains on a higher side as compared to energy produced by nuclear fuels, coal, petroleum etc.

[3] This high cost coupled with comparatively low efficiency of solar arrays makes it necessary to. Electric Vehicle Chassis and Body Design Body/Chassis Requirements Body/Chassis Layout Body/Chassis Strength, Rigidity and Crash Resistance Designing for Stability Suspension for Electric Vehicles Examples of Chassis used in Modern Battery and Hybrid Electric Vehicles Plug-in Hybrid Electric Vehicles (PHEVs) Plug-in Hybrid Vehicles use an external source to charge the electric motor like a BEV, and hence its name.

As a result, they are able to achieve a zero-emission range meaning that emits less than 75g of CO2 per km. They are also able to make significant savings on energy costs, compared to other hybrids.

Electric Vehicles and the Environment: Energy Saving and Overall Reduction of Carbon Emissions: Reducing Local Pollution: Reducing Dependence on Oil: Usage Patterns for Electric Road Vehicles: Further Reading: Types of Electric Vehicles - EV Architecture: Battery Electric Vehicles: The IC Engine/Electric Hybrid Vehicle: Fuelled EVs: EVs using.

Hybrid vehicles (HEV) with combination of engine and EM bring back the electric drive into vehicle traction. They are on the market over ten years and their second generation is offered now.

First HEV were only from the Japanese production, but in last few years every automotive production group presents at least one car with electric hybrid by: 1. Targeting the application of medium and heavy vehicles, a hydraulic electric hybrid vehicle (HEHV) was designed, and its energy management control strategy is discussed in this paper.

Matlab/Simulink was applied to establish the pure electric vehicle and HEHV models, and backward simulation was adopted for the simulation, to get the variation of torque and battery state of charge (SOC) through Author: Hsiu-Ying Hwang, Tian-Syung Lan, Jia-Shiun Chen.

If the all-new Toyota Sai Hybrid looks familiar – it should. The new Toyota hybrid model is based very closely on the new Lexus HS platform. Sold as Author: Colum Wood. Obviously, the technology of hybrid electric vehicles (HEVs) and EVs is interwoven. GM EV-1 ELECTRIC CAR The GM EV-1 electric car, which was introduced inis discussed in Chapter 6 and Appendix A.

As background for later chapters, consider the quote from the GM advertisement appearing in Ref. [7]. EPAP February Fuel Consumption Modeling of Conventional and Advanced Technology Vehicles in the Physical Emission Rate Estimator (PERE) Draft Edward K.

Nam Robert Giannelli Assessment and Standards Division Office of Transportation and Air Quality U.S. Environmental Protection Agency NOTICE This Technical Report does not necessarily represent final EPA decisions.

Toyota Sai. Cars Reviews Toyota engine running on an Atkinson cycle combined with an electric motor and a reduction gear to take over power train TMC’s hybrid vehicles and their. The main improvements are kg ( lbs) weight reduction (whole car weight just kg / 2, lbs), aerodynamic coefficient of just Cd and Z.E.

Hybrid : Mark Kane. Hybrid Electric Vehicles: Control, Design, and Applications Prof. Chris Mi Department of Electrical and Computer Engineering University of Michigan - Dearborn Evergreen Road, Dearborn, MI USA email: [email protected] Tel: () Fax: () Overview • Introduce HEV fundamentals, design, control, modeling, and special.

The latest push to have electric cars with longer range, has resulted in the elimination of mpg quotes in the range of to MPG equivalents. In fact MPG is now rarely even mentioned, only the extended ranges.

So much battery weight is being added that the reduction in engine weight of an electric car is no longer a valid positive argument.

Hydraulic hybrid vehicles an Introduction. As we all know that hybrid vehicles are becoming a future trending part of our development. So this document gives y. Abstract: In order to increase the driving range of electric vehicles, a lift-drag hybrid vertical axis wind turbine (VAWT) and an air duct were designed in this paper, which could realize the wind energy recovering.

The energy conversion theory of the concentrated wind energy was introduced into the. World Electric Vehicle Journal (ISSN ) is the first peer-reviewed international scientific journal that covers all studies related to battery, hybrid, and fuel cell electric vehicles comprehensively.

It is the official journal of The World Electric Vehicle Association and its member the European Association for e-Mobility (), the Electric Drive Transportation Association (), and the.This textbook draws on the authors’ experience gained by teaching courses for engineering students on e.g.

vehicle mechanics, vehicle system design, and chassis design; and on their practical experien.Lightweight Electric/Hybrid Vehicle Design Nelco electric 34 kW brush motor specification Voltage current V A Resistance inductance 45 milliohms µH Field time constant seconds Field volts/amps 22 amps Weight 80 kg/rating (10–60 mins) Efficiency 86% at 34 kW rpm Cooling Air forced Cost ( up) £ (batch prod.).