Modal Emissions and Fuel Consumption Models: State of Development, Concepts, and Issues

Jain, Krishna V.; Little, Cheryl; EG&G Dynatrend Inc.; John A. Volpe National Transportation Systems Center (U.S.)

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Modal Emissions and Fuel Consumption Models: State of Development, Concepts, and Issues

1995-05-01
By Jain, Krishna V. ; Little, Cheryl

[PDF-4.39 MB]

English

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Details:

Creators:

Jain, Krishna V. ; Little, Cheryl

Jain, Krishna V. ; Little, Cheryl Less -
Corporate Creators:

EG&G Dynatrend Inc. ; John A. Volpe National Transportation Systems Center (U.S.)

EG&G Dynatrend Inc. ; John A. Volpe National Transportation Systems Center (U.S.) Less -
Corporate Contributors:

United States. Dept. of Transportation. ITS Joint Program Office
Subject/TRT Terms:

[+]

Environmental Impact Analysis Exhaust Gases Fuel Consumption Intelligent Transportation Systems Pollutants
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final draft; May 1995
Corporate Publisher:

John A. Volpe National Transportation Systems Center (U.S.)
NTL Classification:

AGR-IMPACTS-IMPACTS;NTL-ENERGY AND ENVIRONMENT-Air Quality;NTL-ENERGY AND ENVIRONMENT-ENERGY AND ENVIRONMENT;NTL-INTELLIGENT TRANSPORTATION SYSTEMS-INTELLIGENT TRANSPORTATION SYSTEMS;
Abstract:

There is a need for vehicle emissions and fuel consumption models that are sensitive to changes in vehicle driving pattern. Many Intelligent Transportation Systems (ITS) programs are expected to alter driving patterns in their area of implementation. There is a need for the capability to predict the environmental impact of these changes in driving pattern. Current practice is often limited to predicting emissions and fuel consumption as a function of a velocity measurement, such as trip-average speed, and a vehicle activity measure, such as the distance traveled. Driving pattern is generally defined as consisting of four modes: acceleration, deceleration, cruise and idle. A modal emissions and fuel consumption model accounts for vehicle driving pattern during its calculation of emissions and fuel consumption. A number of studies have shown that driving pattern changes that alter the frequency or magnitude of vehicle acceleration can have a significant effect on both instantaneous and overall emissions production. A modal emissions model is an important tool for the environmental evaluation of any transportation project that changes vehicle driving patterns. This report includes a background section, which contains a basic description of the workings of gasoline powered automobiles, and the determinants of vehicle emissions and fuel consumption. The discussion consists of six topics: • A basic description of an automobile drivetrain, • Operation of a gasoline automobtle engine, • Exhaust emissions production by an automobile engine, • Control and reduction of exhaust emissions, • Factors affecting automobile fuel consumption, • The effect of driving mode on emissions and fuel consumption.
Format:

PDF
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:f923ab2652a322dbdf6619cf940ca12ab7269b4464b76313410393201c41434d
Download URL:

https://rosap.ntl.bts.gov/view/dot/36065/dot_36065_DS1.pdf
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Modal Emissions and Fuel Consumption Models: State of Development, Concepts, and Issues

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