I/M effectiveness as directly measured by ambient CO data

Huel C. Scherrer; David B Kittelson

doi:10.4271/940302

I/M effectiveness as directly measured by ambient CO data

Huel C. Scherrer, David B Kittelson

Mechanical Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

The effectiveness of a centralized Inspection/Maintenance (I/M) program, implemented in a major U.S. metropolitan area in 1991, is directly measured through ambient CO monitor data. A multi-factoral analysis is developed which quantifies effects due to the interaction of hourly traffic levels with wind vector and ambient temperature conditions, allowing a better measure of I/M effectiveness. The time-trend of the measured CO levels is seen to closely match those predicted by the analysis throughout the 7 year study period. An average ambient CO reduction of 1.3 ± 1.4 percent attributable to I/M is measured, with individual results of +1.5 percent, +5.8 percent, and-3.4 percent obtained for the three monitor locations studied.

Original language	English (US)
DOIs	https://doi.org/10.4271/940302
State	Published - Dec 1 1994
Event	1994 SAE International Congress and Exposition - Detroit, MI, United States Duration: Feb 28 1994 → Mar 3 1994

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Other	1994 SAE International Congress and Exposition
Country/Territory	United States
City	Detroit, MI
Period	2/28/94 → 3/3/94

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10.4271/940302

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title = "I/M effectiveness as directly measured by ambient CO data",

abstract = "The effectiveness of a centralized Inspection/Maintenance (I/M) program, implemented in a major U.S. metropolitan area in 1991, is directly measured through ambient CO monitor data. A multi-factoral analysis is developed which quantifies effects due to the interaction of hourly traffic levels with wind vector and ambient temperature conditions, allowing a better measure of I/M effectiveness. The time-trend of the measured CO levels is seen to closely match those predicted by the analysis throughout the 7 year study period. An average ambient CO reduction of 1.3 ± 1.4 percent attributable to I/M is measured, with individual results of +1.5 percent, +5.8 percent, and-3.4 percent obtained for the three monitor locations studied.",

author = "Scherrer, {Huel C.} and Kittelson, {David B}",

year = "1994",

month = dec,

day = "1",

doi = "10.4271/940302",

language = "English (US)",

note = "1994 SAE International Congress and Exposition ; Conference date: 28-02-1994 Through 03-03-1994",

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T1 - I/M effectiveness as directly measured by ambient CO data

AU - Scherrer, Huel C.

AU - Kittelson, David B

PY - 1994/12/1

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N2 - The effectiveness of a centralized Inspection/Maintenance (I/M) program, implemented in a major U.S. metropolitan area in 1991, is directly measured through ambient CO monitor data. A multi-factoral analysis is developed which quantifies effects due to the interaction of hourly traffic levels with wind vector and ambient temperature conditions, allowing a better measure of I/M effectiveness. The time-trend of the measured CO levels is seen to closely match those predicted by the analysis throughout the 7 year study period. An average ambient CO reduction of 1.3 ± 1.4 percent attributable to I/M is measured, with individual results of +1.5 percent, +5.8 percent, and-3.4 percent obtained for the three monitor locations studied.

AB - The effectiveness of a centralized Inspection/Maintenance (I/M) program, implemented in a major U.S. metropolitan area in 1991, is directly measured through ambient CO monitor data. A multi-factoral analysis is developed which quantifies effects due to the interaction of hourly traffic levels with wind vector and ambient temperature conditions, allowing a better measure of I/M effectiveness. The time-trend of the measured CO levels is seen to closely match those predicted by the analysis throughout the 7 year study period. An average ambient CO reduction of 1.3 ± 1.4 percent attributable to I/M is measured, with individual results of +1.5 percent, +5.8 percent, and-3.4 percent obtained for the three monitor locations studied.

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U2 - 10.4271/940302

DO - 10.4271/940302

M3 - Paper

T2 - 1994 SAE International Congress and Exposition

Y2 - 28 February 1994 through 3 March 1994

ER -

I/M effectiveness as directly measured by ambient CO data

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