EPA-AA-TEB-EF-85-03
MOBILES Sensitivity Analysis
by Cell a Shih.
June 1985
Test and Evaluation Branch
Emission Control Technology Division
Office of Air and Radiation
U.S. Environmental Protection Agency
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2
Table of Contents
1.0 Introduction
2.0 Basic^Emission Rates
3.0 Speed Correction Factors
4.0 Tempererature Correction Factors
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3
List of Figures
Basic Emission Rates
1. Light-Duty Gasoline Powered Vehicles
Figure 1 HC versus Mileage
Figure 2 CO versus Mileage
Figure 3 NO, versus Mileage
2. Light-Duty Gasoline Powered Trucks I
Figure 4 HC versus Mileage
Figure 5 CO versus Mileage
Figure 6 NO, versus Mileage
3. Light-Duty Gasoline Powered Trucks II
Figure 7 HC versus Mileage
Figure 8 CO versus Mileage
Figure 9 NO* versus Mileage
4. Heavy-Duty Gasoline Powered Vehicles
Figure 10 HC versus Mileage
Figure 11 CO versus Mileage
Figure 12 NOX versus Mileage
5. Light-Duty Diesel Powered Vehicles
Figure 13 HC versus Mileage
Figure 14 CO versus Mileage
Figure 15 NOX versus Mileage
6. Light-Duty Diesel Powered Trucks
Figure 16 HC versus Mileage
Figure 17 CO versus Mileage
Figure 18 NOX versus Mileage
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7. Heavy-Duty Diesel Powered Vehicles
Figure 19 HC versus Mileage
""Figure 20 CO versus Mileage
Figure 21 NOX versus Mileage
8. Motorcycles
Figure 22 HC versus Mileage
Figure 23 CO versus Mileage
Figure 24 NO, versus Mileage
B. Speed Correction Factors
1. Light-Duty Gasoline Powered Vehicles
Figure 25 HC versus Speed
Figure 26 CO versus Speed
Figure 27 NO, versus Speed
2. Light-Duty Gasoline Powered Trucks I
Figure 28 HC versus Speed
Figure 29 CO versus Speed
Figure 30 NOX versus Speed
3. Light-Duty Gasoline Powered Trucks II
Figure 31 HC versus Speed
Figure 32 CO versus Speed
Figure 33 NO, versus Speed
4. Heavy-Duty Gasoline Powered Vehicles
Figure 34 HC/CO/NOX versus Speed
5. Light-Duty Diesel Powered Vehicles and Trucks
Figure 35 HC/CO/NOX versus Speed
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6. Heavy-Duty Diesel Powered Vehicles
1 Figure 36 HC/CO/NO* versus Speed
7. Motorcycles
Figure 37 HC versus Speed
Figure 38 CO versus Speed
Figure 39 NO. versus Speed
C. Temperature Correction Factors
1. Light-Duty Gasoline Powered Vehicles
Figure 40 Bag 1 HC versus Temperature
Figure 41 Bag 2 HC versus Temperature
Figure 42 Bag 3 HC versus Temperature
Figure 43 Bag 1 CO versus Temperature
Figure 44 Bag 2 CO versus Temperature
Figure 45 Bag 3 CO versus Temperature
Figure 46 Bag 1 NO, versus Temperature
Figure 47 Bag 2 NO, versus Temperature
Figure 48 Bag 3 NO, versus Temperature
2. Light-Duty Gasoline Powered Trucks I
Figure 49 Bag 1 HC versus Temperature
Figure 50 Bag 2 HC versus Temperature
Figure 51 Bag 3 HC versus Temperature
Figure 52 Bag 1 CO versus Temperature
Figure 53 Bag 2 CO versus Temperature
Figure 54 Bag 3 CO versus Temperature
i
Figure 55 Bag 1 NO, versus Temperature
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Figure 56 Bag 2 NO* versus Temperature
' Figure 57 Bag 3 NO, versus Temperature
3. Light-Duty Gasoline Powered Trucks II
Figure 58 Bag 1 HC versus Temperature
Figure 59 Bag 2 HC versus Temperature
Figure 60 Bag 3 HC versus Temperature
Figure 61 Bag 1 CO versus Temperature
Figure 62 Bag 2 CO versus Temperature
Figure 63 Bag 3 CO versus Temperature
Figure 64 Bag 1 NO, versus Temperature
Figure 65 Bag 2 NO, versus Temperature
Figure 66 Bag 3 NO, versus Temperature
4. Heavy-Duty Gasoline Powered Vehicles
Figure 67 HC versus Temperature
Figure 68 CO versus Temperature
Figure 69 NO, versus Temperature
5. Motorcycles
Figure 70 Bag 1 HC versus Temperature
Figure 71 Bag 2 HC versus Temperature
Figure 72 Bag 3 HC versus Temperature
-Figure 73 Bag 1 CO versus Temperature
CO versus Temperature
CO versus Temperature
NO, versus Temperature
NO, versus Temperature
Figure 74 Bag 2
Figure 75 Bag 3
Figure 76 Bag 1
Figure 77 Bag 2
Figure 78 Bag 3 NO, versus Temperature
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1.0 Introduction
MOBILES, a computerized emission factor model for use in
the estimation and projection of hydrocarbons (HC), carbon
monoxide (CO), and oxides of nitrogen (NO,), was released to
the public nn June 1984. Methodologies and data used in this
model are presented in the 4th Edition of AP-42, Volume II;
Mobile Sources, to be released in July, 1985.
The purpose of this sensitivity document is. to display by
way of a series of graphs the sensitivity of MOBILES emission
estimations to changes in some of the key input variables for
the low altitude region vehicles. The eight vehicle types
include: Light-duty gasoline powered vehicles (LDGVs),
light-duty gasoline powered Class 1 trucks (LDGTls), light-duty
gasoline powered Class 2 trucks (LDGT2s), heavy-duty gasoline
powered vehicles (HDGVs), light-duty diesel powered vehicles
(LDDVs), light-duty diesel powered trucks (LDDTs), heavy-duty
diesel powered vehicles (HDDVs), and motorcycles (MCs).
Since MOBILES is an update of its predecessor MOBILE2,
some areas of the calculations remain unchanged due to the fact
that there has been no new test data available in those areas
since MOBILE2 was completed. Examples of those areas include
the exhaust emission rates for pre-1975 light-duty
gasoline-pt>wered vehicles and Class 1 trucks, and the speed
correction factor coefficients for pre-1978 light-duty
gasoline-powered vehicles and for pre-1979 light-duty
gasoline-powered Class 1 and Class 2 trucks. For those areas,
the sensitivity of MOBILES estimations is not examined so that
the sensitivity of MOBILES to the changes of the updated
portions of the input variables can be more explicitly
displayed in the graphs. To see the sensitivity of MOBILES
estimations to the changes of those nonupdated areas, readers
should refer to the document entitled "MOBILE2 Sensitivity
Analysis," prepared by Energy and Environmental Analysis, Inc.,
March 1981.
The graphs in this document are divided into three
groups. The first group (Figures 1-24) illustrates MOBILES
basic emission rates by vehicle type at different mileage
points. The second group (Figures 25-39) displays MOBILES
speed correction factors at various vehicle speeds. The third
group (Figures 40-78) shows MOBILES temperature correction
factors for each of the gasoline-powered vehicles at different
ambient temperatures. In general, separate graphs are included
for each vehicle type and each pollutant. However, for the
speed correction factors, all three pollutants are combined in
a single graph for some vehicle types.
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Brief discussions on differences between MOBILE3 and
MOBILE2, highlights and trends are outlined in the following
paragraphs.
2.0 Basic *Emission Rates
Figures 1 through 24 show how the MOBILES basic emission
rates change with mileage for each of the three pollutants and
each of the eight vehicle types. The HC emissions are total HC
emissions, which includes both methane and nonmethane HC
emissions, and also includes evaporative and crankcase
emissions. The evaporative HC emissions are based on tests on
a representative commercial fuel.
The basic emission rates at various mileage points are
calculated under the FTP operating mode, which includes 20.6%
cold start, 27.3% hot start, and 52.1% stabilized. The
tampering effects are also calculated and included in these
rates.
For 1975 and later model years, some model year groups
are combined as one group if there is a minimal difference
(0.02 grams/mile for HC and NO. • emissions, and 1.00
grams/mile for CO emissions) in the emission rates at all
mileages. Therefore, the model year groups in this document
may differ slightly from those presented in other documents
(such as in AP-42, in which the model year groups are primarily
based on emission standards and/or emission control technology
groups).
The basic emission rates for the two heavy-duty vehicle
classes (HDGVs and HDDVs) have been updated for all model year
groups in MOBILE3, due to new factors used to convert emissions
in g/bhp-hr to emissions in grams/mile.
3.0 Speed Correction Factors
Figures 25 through 39 show the MOBILES speed correction
factors at various vehicle speeds (in mph) for each of the
three pollutants and each of the eight vehicle types. For the
two heavy-duty vehicle classes (HDGVs and HDDVs), all three
pollutants are included in one plot. The two light-duty
diesel-powered vehicle and truck classes (LDDVs and LDDTs) are
combined into one vehicle group with all three pollutants
included in one graph.
The general trend of the speed correction factors on HC
and CO emissions is that the lower the vehicle speed the larger
the numerical value of the speed correction factor (which
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represents higher emissions). The trend of the NO* speed
correction factors is similar to that of HC and CO emissions up
to a certain vehicle speed (for example, at 40 miles per hour
for 1981 arid later model year LDGVs). With higher speeds,
(e.g., 40+ mph for 1981+ LDGVs), the NO, speed correction
factors increase. The speed correction factor is 1.0 at
vehicle speed 19.6 mph for all vehicle classes.
4.0 Temperature Correction Factors
Figures 40 through 78 present the MOBILE3 temperature
correction factors at various ambient temperatures (in degrees
Fahrenheit) for each of the three modes of operation, three
pollutants, and four light-duty gasoline-powered vehicle types
(LDGVs, LDGTls, LDGT2s, and MCs). The three modes represent
the three test segments of the FTP driving cycle: cold start,
stabilized, and hot. start. For HDGVs, the graphs are presented
for each of the three pollutants only. For diesel-powered
vehicles and trucks, the temperature correction factor is
always 1.0.
In MOBILE2, the temperature correction factor was set to
be 1.0 at the temperature ranges of 68° to 86°F. This approach
was viewed as inappropriate since the emissions from in-use
vehicles outside the laboratory are expected to show some
sensitivity even within the temperature ranges between 68° and
86°F. For this reason, the temperature correction factor for
MOBILES is 1.0 only at 75°F.
Another deviation from MOBILE2 is that at low
temperatures (less than 75°F) for 1981 and later LDGVs, and
1984 and later LDGTls and LDGT2s the cold start CO emissions
use an additive rather than a multiplicative correction
factor. Data from in-use vehicles/trucks of those model years
have shown that the multiplicative correction factor
methodology does not give as good a fit for low temperature
cold start CO emissions as an offset model.
Note that some model year groups are combined as one
group if their correction factors at various temperatures are
very similar, so that the graphs can be more clearly
presented. For this reason, the model years in this document
may differ slightly from those presented in other documents.
The general trend of the temperature correction factors
on cold start HC and CO emissions and all three modes of NOX
emissions is that the lower the ambient temperature the larger
the numerical value of the temperature correction factor (which
represents higher emissions). For the other two modes of HC
and CO emissions, the trend depends upon the model year group,
or the technology group, of the vehicle.
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FIGURE 1
BASIC EMISSION RATES
LIGHT DUTY GASOLINE POWERED VEHICLES
HYDROCARBONS
Low Altitude
e
5-
4-
I3
CO
CO
2-
1-
1975-79
6
-4
CO
3 1
CO
CO
•2
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 2
60
50-
40-
CO
CO
CO
30-
20-
10-
BASIC EMISSION RATES
LIGHT DUTY GASOLINE POWERED VEHICLES
CARBON MpNOXIDE
Low Altitude
1975-79
60
50
-40
-30
1
CO
CO
CO
-20
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 3
BASIC EMISSION
LIGHT DOTY GASOLINE POWERED VEHICLES
OF NITROGEN
Low Altitude
3.5 -\
C? 2.5 -I
2-
CO
8
CO
CO
1.5-
1-
0.5-
1975-76
1977-79
1980
1987-I-
1984-86
1981-82
1983
3.5
-3
f-2.5^
r2
cn
CO
f-1.5
hO.5
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 4
9
8-
7-
6H
L
CO
I
CO
co
4-
3-
2-
1-
BASIC EMISSION
LIGHT DUTY GASOLINE POWERED TRUCKS I
HYDROCARBONS
Low Altitude
1975-77
9
8
-7
-6
-4
CO
I
CO
CO
-3
-2
0 20 40 60 60 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 5
70
60-
50 H
co
S
CO
a 30
30-
10-
BASIC EMISSION RATES
LIGHT DUTY GASOUNE POWERED TRUCKS I
CARBON MpNOXIDE
Low Altitude
1975-78
1979-80
1981
1982-83
1984
1987+
1985-86
70
60
50
CO
I
(-30 §
-10
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 6
BASIC EMISSION RATES
LIGHT DUTY GASOLINE POWERED TRUCKS I
OXIDES OF NITROGEN
Low Altitude
o
co
CO
CO
2-
1985-86
1987-1-
CO
I
CO
CO
-2
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE?
14
12-
10-
8-
CO
S
CO
CO A
J-S o-
4-
2-
BASIC EMISSION RATES
LIGHT DUTY GASOLINE POWERED TRUCKS II
HYDROCARBONS
Low Altitude
1970-73
1974-78
1985-86
1987+
14
12
10
CO
1
CO
e 23
s
w
-4
-2
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 8
BASIC EMISSION RATES
LIGHT DUTY GASOLINE POWERED TRUCKS II
CARBON MpNOXIDE
Low Altitude
100
80-
60-
CO
I
CO
CO
40-
20-
1970-78
1979-80
1981-83
100
-80
-60
O
CO
I
CO
CO
-40
-20
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 9
6-
* <
1
CO
I4
co
CO
3-
2-
BASIC EMISSION
LIGOT DUTY GASOLINE POWERED TRUCKS II
OF NITROGEN
Low Altitude
1970-73
1974-78
1979-84
1985-86
1987+
6
-5
I
CO
CO
CO
-2
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 10
BASIC EMISSION RATES
HEAVY DUTY GASOLINE POWERED VEHICLES
HYDROCARBONS
Low Altitude
CO
S
CO
CO
36
32-
28-
24-
20-
16-
12-
8-
4-
1963-67
Pra-1963
1968-69
1970-73
1974-77
1978
1979-84
1987-90
1991+
1985-86
36
32
28
-24
-18
-12
-8
-4
co
I
CO
CO
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 11
BASIC EMISSION RATES
HEAVY DUTY GASOLINE POWERED VEHICLES
CARBON MpNOXIDE
Low Altitude
300
250-
200-
CO
&
S
CO
CO
150-
100-
50-
1963*69
Pr«-1963
300
250
-200
CO
150 55.
9
CO
CO
hioo
-50
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 12
BASIC EMISSION RATES
HEAFY DUTY GASOLINE POWERED
OF NITROGEN
Low Altitude
ICLES
10
9-
8-
CO
§ 7
6-
5-
1970-73
1963-69
Pr«-1963
1974-77
1987-1990
1991-1993
-1996
1979-80
1981-84
1986
1985
•10
•9
-8
•7I
CO
-6
-5
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 13
2.5
1.5-
CO
I
CO
CO
I—I
S i-
0.5-
BASIC EMISSION RATES
LIGHT DUTY DIESEL POWERED VEHICLES
HYDROCARBONS
Low Altitude
1975-79
1980+
2.5
-1.5
rl
CO
CO
CO
w
-0.5
6 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 14
4.5
4-
3.5-
w m
I
to
22 3-5-
w
2-
1.5-
BASIC EMISSION RATES
LIGHT DUTY DIESEL POWERED VEHICLES
CARBON MpNOXIDE
Low Altitude
I • I
Pr«-1975
1975-79
1980H-
4.5
-3.5
-3
^ »
I
-2.5W
-1.5
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 15
BASIC EMISSION RATES
LIGHT DUTY DIESEL POWERED VEHICLES
OXIDES OF NITROGEN
Low Altitude
1.5-
CO
1
CO
CO
1-
0.5
Pr«-1975
1975-80
1981-84
1985+
-1.5
1
CO
1
CO
CO
H—I
s
w
-1
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
0.5
-------
FIGURE 16
BASIC EMISSION RATES
LIGHT DUTY DIESEL POWERED TRUCKS
HYDROCAJRBONS
Low Altitude
1.6
V)
1
CO
CO
0.5
Pre-1981
1981+
1.5
1
CO
I
CO
CO
1—4
3
w
hO.5
6 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 17
BASIC EMISSION RATES
LIGHT DUTY DIESEL POWERED TRUCKS
CARBON MpNOXIDE
Low Altitude
3
3.5-
co
I
CO
2-
1.5-
Prt-1981
1981+
-2.5
CO
21
CO
CO
I—I
2
w
-1.5
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 18
2.5-
1
CO
I "'
CO
CO
1-
0.5
BASIC EMISSION RATES
LIGHT DUTY DIESEL POWERED TRUCKS
OXIDES OF NITROGEN
Low Altitude
Pr«-198t
1981-86
1987+
2.5
CO
CO
CO
-1
-0.5
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 19
5
4.5 H
4-
CO
S5 3.5
S
CO
CO
3-
2.5-
BASIC EMISSION RATES
HEAVY DUTf DIESEL POWERED VEHIC
HYDROCARBONS
Low Altitude
1972-79
1969-71
1980-81
1966-68
Prt-1966
1982-84
1985
4.5
-3.5
CO
CO
CO
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 20
14
13-
12-
I
CO
22 10
9-
8-
BASIC EMISSION RATES
HEAVY DUTY DIESEL POWERED VEHICLES
CARBON MONOXIDE
Low Altitude
1972-74
1975-79
1969-71
1966-68
Pr«-1966
1980-81
1982-84
1985
1986
1987-1992
1993-1996
1997+
20
40
60
80
100
14
-13
12
-11
1
CO
-9
-8
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 21
CO
S5
S
CO
CO
BASIC EMISSION
HEATY DUTY DIESEL POWERED VEHICLES
OF NITROGEN
Low Altitude
24-
22-
20-
18-
16-
14-
12-
_.„ 1475 79
1969—71
1M9-«A
1985
„ , .- . . i IQAft
1987-92
•24
•22
•20 cr
I
CO
:»g
CO
CO
1— (
-18 W
-14
-12
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 22
24
20-
CO
CO
8-
BASIC EMISSION
MOTORCYCLES
HYDROCARBONS
Low Altitude
1980-*-
1978-79
Pr«-1978
24
20
-18
CO
I
CO
CO
-12
-8
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 23
65
60-
661
50 -J
CO
§ «°
A
CO
CO
3 35
W
30-
25-
20-
15
BASIC EMISSION
MOTORCYCLES
CARBON MpNOXIDE
Low Altitude
1978-79
Pft-1978
1980+
65
60
-55
-50
-45
-40
CO
CO
CO
-35
-30
-25
-20
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
15
-------
FIGURE 24
0.9-
0.8-
0.7-
0.6-
CO
§ "•
HH
0.4-
0.3-
0.2-
0.1-
BASIC EMISSION RATES
MOTORCYCLES
OF NITROGEN
Low Altitude
1980+
Pra-1978
1978-79
0.9
0.8
-0.7
-0.6
CO
-0.5 55
2
CO
CO
'r-0.3
hO.2
-0.1
0 20 40 60 80 100
ACCUMULATED MILEAGE (Thousands of Miles)
-------
FIGURE 25
SPEED CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED VEHICLES
HYDROCARBONS
Low Altitude
2.5-
§
1
2-
S 1.5-
s
a,
CO
1-
0.5-
1980
1978-7
198H
For pre-1978 model ysars, •••
Figure 25 of th« MOBILE2
Sensitivity Analysis. March 1981.
•2.5
h*I
-1.5
§
O
Q
W
W
a,
-0.5
10 20 30 40 50
VEHICLE SPEED (MPH)
-------
FIGURE 26
2.5
2-
1
§
&
I
o
Q
PU
1.5-
1-
0.5-
SPEED CORRECTION FACTORS
LOST DUTY GASOLINE POWERED VEHICLES
CARBON MpNOXIDE
Low Altitude
1978-79
1980+
For prs-1978 model years, see
Figure 26 of the MOB1LE2
Sensitivity Analysis, March 1981.
1980-h
1978-79
2.5
•1.5
-1
I
E-«
O
W
«
g
U
Q
W
W
Pu
CO
-0.5
10 20 30 40 50
VEHICLE SPEED (MPH)
-------
FIGURE 27
1.5
1.4-
I
1.3-
I1-2-
O
o
Q
W
1.1-
1-
0.9-
0.8
SPEED CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED VEHICLES
OXIDES OF NITROGEN
Low Altitude
1981+
For pre-1978 model years, •••
Figure 27 of the MOBILE2
Sensitivity Analysis, March 1981.
1980
1978-79
1981+
10 20 30 40 50
VEHICLE SPEED (MPH)
•1.5
•1.4
-1.3
§
•«g
o
04
K
•1.1 O
o
-1
PU
CO
-0.9
•0.8
-------
FIGURE 28
2.5-
2-
S
8
U
CO
1.5-
1-
0.5-
SPEED CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
HYDROCARBONS
Low Altitude
1984-86
1979-
1987-1-
For pre-1979 model years, see
Figure 28 of the MOBILE2
Sensitivity Analysis, March 1981.
2.5
- I
-1.5
O
§
O
hi
-0.5
10 20 30 40 50
VEHICLE SPEED (MPH)
-------
FIGURE 29
§
i
E-i
O
§
O
a,
CO
2.5-
2-
1.5-
1-
0.5-
SPEED CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
CARBON MpNOXTOE
Low Altitude
1979-83
1984+
For pre-1979 model years, «••
Figure 29 of th« MOBILE2
Sensitivity Analysis, March 1981.
1984+
1979-83
10 20 30 40 50
VEHICLE SPEED (MPH)
2.5
-2
§
o
Q
W
W
CU
CO
-0.5
-------
FIGURE 30
1.5-
1.4-
1.3-
I ,3-
&-•
O
Q
CU
CO
1.1-
1-
0.9-
0.8
SPEED CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
OXIDES OF NITROGEN
Low Altitude
For pr«-1979 model years, *••
Figure 30 of th« MOBILE2
Sensitivity Analysis, March 1981.
1987-I-
10 20 30 40 50
VEHICLE SPEED (MPH)
1984-86
1979-83
1987+
1.5
1.4
1.3
""6
O
w
-u!
O
-1
CU
CO
-0.9
0.8
-------
FIGURE 31
2.5-1
§
&-•
I
§
W
PS
§
o
Q
W
W
PU
1.5 H
H
0.5
SPEED CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS H
HYDROCARBONS
Low Altitude
1984-86
1979-
1987-1-
For pre-1979 model years, see
Figure 31 of the MOBILE2
Sensitivity Analysis, March 1981.
10 20 30 40 50
VEHICLE SPEED (MPH)
2.5
, 1
i
^-1.5
W
K
s
o
S
CO
O.5
-------
FIGURE 32
2.5
2-
I
^ 1.S
I
O
8
O
DH
CO
1-
0.5-
SPEED CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS H
CARBON MONOXIDE
Low Altitude
1979-83
1984+
10
For pro-1979 modol yoars, soo
Flgur* 32 of th« MOBILE2
Ssnsltlvlty Analysis, March 1981.
1984+
1979-83
20
30
40
50
VEHICLE SPEED (MPH)
•2.5
8
£-•
-1.5
-1
!
O
W
a«
CO
-0.5
-------
FIGURE 33
SPEED CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS H
OF NITROGEN
Low Altitude
1.5
1.4-
8
1.3-
I
O
|,H
Q
W
P-.
C/3
1-
0.9
0.8
For pre-1979 mod*! years, *••
Flour* 33 of th« MOBILC2
Sensitivity Analysis, March 1981.
1987+
10 20 30 40 50
VEHICLE SPEED (MPH)
1984-86
1979-83
1987+
1.5
1.4
-1.3
1.2 §
»— I
H
O
•1.1 O
Q
W
W
a,
-0.9
0.8
-------
FIGURE 34
SPEED CORRECTION FACTORS
HEAVY DUTY GASOLINE POWERED VEHICLES
ALL POLLUTANTS
Low Altitude
3.5
3-
8
2.5-
I *
o
05
8 "•
Q
W
1-
0.5-
HC
CO
NOx
NOx
CO
HC
10 20 30 40 50
VEHICLE SPEED (MPH)
3.5
-3
-2.5
8
I
§
1.50
Q
W
OH
hi
-0.5
-------
FIGURE 35
SPEED CORRECTION FACTORS
LIGHT DUTY DIESEL POWERED VEHICLES AND TRUCKS
ALL POLLUTANTS
Low Altitude
•3
2.5-
g
£-•
I
§
g
o
PU
CO
2-
& 1-5 J
1-
0.5-
CO
HC
NOx
NOx
CO
HC
10 20 30 40 50
VEHICLE SPEED (MPH)
2.5
-.8
-1.5
O
§
L>
Q
W
W
OU
CO
-0.5
-------
FIGURE 36
2.5-
8
I
2-
U 1.8-
8
O
PL,
CO
1-
0.5-
SPEED CORRECTION FACTORS
HE&VY DUTY DIESEL POWERED
ALL POLLUTANTS
Low Altitude
CO
HC
NOx
NOx
CO
HC
10 20 30 40 50
VEHICLE SPEED (MPH)
2.5
3 I
15
-1.5
-1
8
O
CU
CO
-0.5
-------
FIGURE 37
3.5
3-
s
£-•
I
E-
O
O
Q
2.5-
2-
1.5-
1-
0.5-
SPEED CORRECTION FACTORS
MOTORCYCLES
HYDROCARBONS
Low Altitude
10 20 30 40 50
VEHICLE SPEED (MPH)
Pr«-1978
1980-1-
1978-79
3.5
•3
2.5
g
£-•
8 §
w
tf
K
1.5 O
O
Q
W
-1
to
-0.5
-------
FIGURE 38
4.5H
g 3.5H
H
i -
s
§
0
Q
2-
a.
CO 1.5-
1-
0.5-
SPEED CORRECTION FACTORS
MOTORCYCLES
CARBON MpNOXIDE
Low Altitude
4.5
-3.5 g
i
h2.5
O
g
0
PL,
hl.5 CO
hi
-0.5
10 20 30 40 50
VEHICLE SPEED (MPH)
-------
FIGURE 39
1.6
SPEED CORRECTION FACTORS
MOTORCYCLES
OXIDES OF NITROGEN
Low Altitude
•1.6
1.5-
1.4-
8
I
H
O
W
tf
§
w
w
cu
1.3-
1.1-
1-
Pr«-1978
1978+
0.9-
1978+
•1.5
Pre-1978
I
(->
ma
I
O
l-i.i 9
CU,
CO
hi
-0.9
0.8-
10 20 30 40 50
VEHICLE SPEED (MPH)
i • i
•0.6
-------
FIGURE 40
u-
8
12-
8
Pi io-1
1
U 8-1
6
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED VEHICLES
BAG 1 - HYDROCARBONS
Low Altitude
1981+
1980
1968-69
1975-79
1970-74
Pr«-1968
4-
1981+
1970-74
Pr«-1970
1975-80
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
14
12
-10
-8
1
6
K
§
-6
tt
-2
-------
FIGURE 41
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED
BAG 2 - HYDROCARBONS
Low Altitude
8
§
I
sa
«
P?
DH
S
Ed
E-
2.6
2.4-
2.2-
2-
1.8-
1.6-
1.4-
1.2-
1980-t-
1975-79
1968-69
Pr«-1968
1970-71
1972-74
1975-80
1968-69
1972-74
Pr«-1968
198H-
1970-71
•2.6
•2.4
•2.2
8
1.8
-1.6
1
8
o
g
O,
S
w
-1
0.8-
i ^ r
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
0.8
-------
FIGURE 42
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED VEHICLES
BAG 3 - HYDROCARBONS
Low Altitude
I
2.4
2.2-
2-
fr* 1.8-
I
B
PL! Le-
tt
I
W 1.4-
o,
1.3-
1-
0.8-
0.6
1980
1981+
1975-79
Pr«-1968
1968-69
1970-71
1972-74
1975-80
•2.4
2.2
1972-74
-1.8
-1.6
«*•
§
O
-1.4
1981+
1968-71
Pr«-1968
-0.8
I I
II
0.6
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
-------
FIGURE 43
8
g
o
-to
7-
g e-
-
* *•
1-
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED VEHICLES
BAG 1 - CARBON MONOXIDE
Low Altitude
1980
1975-79
1968-69
1970-71
1972-74
Pr«-1968
Th«r« i» no CF at low tomporaturo
for 1981+LDGVt. For fur tW
information, soo pago 12 of tho
MOBILES Usors Guido.
1972-74.1981+
Pr«-1968
1975-80
1970-71
1968-69
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•8
•eg
-s
H
O
w
tt
tt
S3"
S
tf
w
DM
-i
-------
FIGURE 44
TEMPERATURE CORRECTION FACTORS
LIGflT DUTY GASOLINE POWERED VEHICLES
BAG 2 - CARBON MONOXIDE
Low Altitude
5.5
1
§
5-
4.6-
4-
3.5-
§ 3-
o
w
SJ
2.5-
d, 2-
IS
1.5-
1-
0.5
1975-79
1970-71
1968-69
1972-74
Prt-1968
1975-80
1972-74
1970-71
1981+
1968-69
Pr«-1968
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
5.5
4.6
-3.5
§
A
W
-3 8
CJ
-2.5 ID
-2 OU
H
-1.5
-1
•0.5
-------
FIGURE 45
3.5
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED VEHICLES
BAG 3 - CARBON MONOXIDE
Low Altitude
•3.5
3-
2.5-
I
t-
o
w
«
§
O
w
OS
w
ou
2-
1.5-
1981+
1980
1-
1975-79
"f&IUS
1970-71
1972-74
0.5
1975-80
1970-71
1972-74
1968-69
Pr«-1968
1981+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
1
-2.5 &*
i
B
t-2 g
o
-1.5
Ed
E-
-1
•0.5
-------
FIGURE 46
TEMPERATURE CORRECTION FACTORS
UGKT DUTY GASOLINE POWERED VEHICLES
BAG 1 - OXIDES OF NITROGEN
Low Altitude
1.8
1.6-
1.4-
I 1.3-
o
w
s
o
w
1-
^ 0.8-
0.6
0.4-
0.2
1977-79
198H
1980
Prc-1968
1968-72
1975-76
1973-74
Prt-1968
1968-72
1975-76
1973-74
1977-80
1981+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•1.6
•1.6
•1.4
•1.2 |
O
•i §
O
w
•0.8 gj
-0.6
-0.4
0.2
-------
FIGURE 47
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED VEHICLES
BAG 2 - OXIDES OF NITROGEN
Low Altitude
Pre-1968
I
g
B
§
O
w
05
a,
1.8-
1.6-
1.4-
1.2-
1-
0.8-
0.6-
0.4-
1977-80
1981+
1968-72
0.2-
1973-74
1975-76
1975-76
Pr«-1973
1973-74
1977-80
1981+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
1.8
1.6
1.4 I»*
I
E-
O
•1.2 W
I
O
-1
W
OS
£>
ss
a.
-0.4
0.2
-------
FIGURE 48
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED VEHICLES
BAG 3 - OXIDES OF NITROGEN
Low Altitude
1981+
g
o
sa
IS
1.8-
1.6-
1.4-
1.2-
1-
0.8-
0.6-
0.4-
1973-74
1975-76
1975-76
1968-72
Pr«-1968
1973-74
1977-80
1981+
•1.8
•1.4
-1.2
-1
&«
1
E-
O
g
o
W
OS
D
-0.4
0.2-
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
0.2
-------
FIGURE 49
S
8
O
sa
14
12-
«H
8-
6-
>,
4-
2-
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
BAG 1 - HYDROCARBONS
Low Altitude
1987-I-
1984-86
1968-69
1975-83
1970-74
Pr«-1968
10 30 50 70 00 110
AMBIENT TEMPERATURE (F)
14
-12
§
-8
1
O
w
tt
§
-6
-2
-------
FIGURE 50
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
BAG 2 - HYDROCARBONS
Low Altitude
2.6
2.4-
2.2-
2-
o
W 1.8
|
Ed 1.6
K
I
g "
o.
1.2-
1-
0.8
1984-t-
1975-83
1970-71
1972-74
1975-86
1968-69
1972-74
Pre-1968
1987+
1970-71
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•2.6
•2.4
•2.2
8
-1.8
-1.6
as
I
t-
I
0.8
-------
FIGURE 51
TEMPERATURE CORRECTION FACTORS
UGHT DUTY GASOLINE POWERED TRUCKS I
BAG 3 - HYDROCARBONS
Low Altitude
2.4
1
2.2-
2-
1.8-
O
W 1.6-
I
O
S!
1.4-
1.2-
1-
0.8-
0.6
1984-86
1987-1-
1975-83
Pr«-1968
1968-69
1970-71
1972-74
1975-86
1972-74
1987+
1968-71
Pr«-1968
I I
2.4
2.2
1.8
i
O
1.6 W
I
O
-1.4 W
D
53
-1.2
-1
0,
S
-0.8
0.6
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
-------
FIGURE 52
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
BAG 1 - CARBON MONOXIDE
Low Altitude
8-
g
K
|
U 4
W
tf
s
o
§ 3-
K
1-
1975-83
Th«r« is no CF at lew t«mp«ratur«
for 1984+ LDGTIs. For further
Information, ••• pago 12 of th«
MOBILES U««rt Guld*.
Pr«-1968
1984-t-
1972-74.1987-I-
Pr«-1968
1975-86
1970-71
1968-69
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
i—^
14B
W
«
§
O
h3
-2
IS
-1
-------
FIGURE 53
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
BAG 2 - CARBON MONOXIDE
Low Altitude
5.5-
5-
4.5-
>—/
S 4-
I-H
fci
U
W
3.5-
i ••
PS
W
E-«
2.5-
2-
1.5-
1-
1975-83
1970-71
1968-69
1972-74
Pre-1968
0.5
1975-86
1972-74
1970-71
1987+
1968-69
Pr«-1968
10 30
50
70 90 110
5.5
4.5
-3.5
8
1
1—4
g_
O
-3 §
o
tt
-2.5^)
S«
OS
r2 PU
E-
-1.5
-1
0.5
AMBIENT TEMPERATURE (F)
-------
FIGURE 54
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
BAG 3 - CARBON MONOXIDE
Low Altitude
3.5
3-
I-
f*« 2.5-
I
8 •-
O
sa
IS
1.5-
1-
0.5
1972-74
1975-86
1970-71
1972-74
1968-69
Prt-1968
1987+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
3.5
8
-2.5 **
1
O
w
•« I
O
w
K
-1.5
w
&H
S
w
-1
•0.5
-------
FIGURE 55
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
BAG 1 - OXIDES OF NITROGEN
Low Altitude
1.8-
1.6-
g t*1
i
§ 1.2^
•—«
H
O
tt
o
1-
0.8-
PH
0.6-
0.4-
0.2
1979-86
1987+
1968-72
Pr«-1968
1975-78
1973-74
Pr«-1968
1968-72
1975-78
1973-74
1979-86
1987+
i T
1.8
1.6
«|
-1.2 j|
O
W
-i I
O
w
Lo.8^
CX
rO.6
-0.4
0.2
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
-------
FIGURE 56
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
BAG 2 - OXIDES OF NITROGEN
Low Altitude
8
1.8-
1.8-
&* 1.4-
1
W 1.2-
tt
§
CJ
sa
1-
0.8-
0.6-
0.4-
0.2
Pr*-1968
1973-74
1975-78
1968-72
1973-74
1979-86
1987+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•1.8
E-*
-1.4
•1.2
-1
s
o
W
Pi
-0.4
0.2
-------
FIGURE 57
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS I
BAG 3 - OXIDES OF NITROGEN
Low Altitude
g
1.6 H
1.4H
s
E-
o
W 1.3-
tt
g
CJ
w
S3
1-
0.8
0.6-
0.4-
0.2
1987-I-
1973-74
1975-78
1975-78
1968-72
Pr«-1968
1973-74
1979-86
1987-1-
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•1.8
H.4
hl.2
fc
I
E-«
O
§
O
w
«
13
hO.6
1-0.4
0.2
-------
FIGURE 58
14
TEMPERATURE CORRECTION FACTORS
UGHT DUTY GASOLINE POWERED TRUCKS
BAG 1 - HYDROCARBONS
Low Altitude
•14
1988+
ti
1
E-«
O
W
tt
8
o
tt
w
cu
12 -{
10 H
6
1984-87
1970-73
1979-83
1974-78
Pre-1970
1988+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
r-12
he
he
§
S
E-
O
W
»
8
sa
-------
FIGURE 59
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS II
BAG 2 - HYDROCARBONS
Low Altitude
2.6
24-
2.2
£-•
O
W 1.8-
tt
g
O
tt
w
£-•
1.8
1.4
1.2
0.8
1984+
1979-83
1970-73
Pr»-1970
1974-78
1979-87
1974-78
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•2.6
•2.4
•2.2
1-2
hl-8
h!6
§
O
H
tf
H.4
IX
3
W
0.8
-------
FIGURE 60
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS H
BAG 3 - HYDROCARBONS
Low Altitude
2.4
8
£-•
2.2-
2-
1.8-
1.8-
§
o
W 1.4
tt
W lt2"
OH
" n
0.8^
0.6
1984-87
1988-1-
1979-83
Pr«-1970
1970-73
1974-78
1979-87
1988+
1974-78
1970-73
Pr«-1970
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•2.4
•2.2
•1.8
-1.8
i
H
O
I
-1.4
-0.8
0.6
-------
FIGURE 61
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS H
BAG 1 - CARBON MONOXIDE
Low Altitude
1979-83.
6-
Th«r« is no CF at low t«mp«ratur«
for 1984-1- LDGT2s. For further
information, »•• page 12 of th«
MOBILE3 Us«rs Guid*.
g
«
§
o
1970-73
1974-78
4-
3-
Pre-1970
2-
1-
1984+
1988+
Pre-1970
1979-87
1974-78
1970-73
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•6
g
••B
K
-4
-3
g
O
w
w
-1
-------
FIGURE 62
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS
BAG 2 - CARBON MONOXIDE
Low Altitude
5.5
g
§
H
O
W
5-
4.5-
4-
3.5-
§ 3-
O
w
S
3.5-
1.5-
1-
0.5
1988+
1984-87
1979-87
Pre-1970
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•5.5
-4.5
g
-4
-3.5
§
-3
O
w
tf
-3.5
-3 0,
-1.5
-1
0.5
-------
FIGURE 63
I
§
83
tt
w
OH
s
w
3.5
3-
2.5-
S *-
o
1.5-
1-
0.5
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS II
BAG 3 - CARBON MONOXIDE
Low Altitude
1979-83
Pr«-1970
1970-73
1974-78
1979-87
1974-78
1970-73
Pr«-1970
1988+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
3.5
w
K
9 S
2 8
w
tt
S3
5
0,
a
-1
•0.5
-------
FIGURE 64
1.8
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS H
BAG 1 - OXIDES OF NITROGEN
Low Altitude
1979-87
1.6 H
g 1.4.
E-»
I
§ 1.2-
W
«
g i-
O
w
1988+
1970-73
Pre-1970
0.8 H
1974-78
cu
0.6-
0.4 H
0.2
Pr«-1970
1970-73
1974-78
1979-87
1988+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•1.8
H.6
h»-*g
£-•
Q
K2 §
§
o
I-0.6
hO.4
•0.2
-------
FIGURE 65
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS II
BAG 2 - OXIDES OF NITROGEN
Low Altitude
8
1.8-
1.8-
**« 1.4-
I
O
W 1.2-
O
W 1-
K
13
«
w
0,
0.8-
0.6-
0.4-
0.2
Pr«-!970
1979-87
1988+
1970-73
1974-78
Pr«-1970
1970-73
1974-78
1979-87
1988+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•1.8
•1,6
-1.4
1
-1.2
1
S
8
O
O.
0.2
-------
FIGURE 66
TEMPERATURE CORRECTION FACTORS
LIGHT DUTY GASOLINE POWERED TRUCKS
BAG 3 - OXIDES OF NITROGEN
Low Altitude
g
§
1.8 H
1.6 H
1.4 H
1988-1-
Pr«-1970
W 1.2
tt
g
U
W 1
g 0.8H
O,
0.6 H
0.4H
1974-78
1970-73
Pre-1970
1974-78
1979-87
1988+
0.2
l.8
1.6
-1.4
-1.2
-1
g
o
r*'8
cu
hO.6
-0.4
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•0.2
-------
FIGURE 67
TEMPERATURE CORRECTION FACTORS
HEAVY DUTY GASOLINE POWERED VEHICLES
HYDROCARBONS
Low Altitude
2.2
I
C 1-8 -\
£
I
E-«
8 "•
K
§
O
w , ^
Oi 1.4-
W
PL,
1.2
0.8
1985-t-
1970-73
1984
Pr«-1970
1974-78
1979-83
1984
1979-83
1985+
1974-78
1970-73
Pre-1970
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•2.2
§
1 A E-1
•l.o r^
|
1-1.6 O
g
o
H.4 §
H.2
PL,
•0.8
-------
FIGURE 68
2.8
8
2.4-
2.2-
a
K z-
§
W 1.8-
K
§
O
W 1.6-
«
ED
1.4-
IS
1.2-
1-
0.8
TEMPERATURE CORRECTION FACTORS
DUTY GASOLINE POWERED VEHICLES
CARBON MpNOXIDE
Low Altitude
1984
1985+
1970-73
1974-78
Pr«-1970
1979-83
1984
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
2.6
•2.4
•2.2
-2
•1.8
1
-1.6 W
S3
1-12
-1
0.8
-------
FIGURE 69
TEMPERATURE CORRECTION FACTORS
HEAVY DUTY GASOLINE POWERED
OF NITROGEN
Low Altitude
1.8-
1.6-
§ 1.4 H
§ 1.2 -I
g i-
0.8-
0.6-
0.4-
0.2
Pr«-1970
1984
1970-73
1985+
1974-78
1979-83
1979-83
Pr«-1970
1970-73
1974-78
1984
1985-i-
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•1.8
•1.6
•1.4 §
•1.2
SS
O
W
hi §
W
04
1-0.85;
PH
-0.6
-0.4
0.2
-------
FIGURE 70
TEMPERATURE CORRECTION FACTORS
MOTORCYCLES
BAG 1 - HYDROCARBONS
Low Altitude
1978-79
e-
8
I
S 4-1
3-
1-
1980+
1978-79
Pr«-1978
•6
••!
Ct«
|
.4 U
r w
I
o
M«
OS
W
a,
-i
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
-------
FIGURE 71
TEMPERATURE CORRECTION FACTORS
MOTORCYCLES
BAG 2 - HYDROCARBONS
Low Altitude
§ -1-5H
tf
g
o
w
05
1-
1980+
1978-79
Pr«-1978
1980+
•1.5 g
i
i
B
W
n I
O
W
cu
W 0.5-1
-0.5
10
30
50
70
90
110
AMBIENT TEMPERATURE (F)
-------
FIGURE 72
1.4
1.3-
§
1
1.2-
§
o
OS
D 1.1
S3
1-
0.9
TEMPERATURE CORRECTION FACTORS
MOTORCYCLES
BAG 3 - HYDROCARBONS
Low Altitude
Pr«-1978
1978-79
1980+
Pr«-1978
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
-1.4
•1.3
I
§
•1.2 £
O
W
I
o
w
1-1.1 £>
DH
E-
n
•0.9
-------
FIGURE 73
TEMPERATURE CORRECTION FACTORS
MOTORCYCLES
BAG 1 - CARBON MONOXIDE
Low Altitude
I
4.5-
4-
3.5-
1 ,
E- 3~
K
CJ
SJ
2.5-
2-
Hi 1.5-
1-
0.5-
1978-79
1980-1-
Pr«-1978
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
•4.5
•4
e
-3.5
M |
i « £•*
O
w
tt
-2.5 §
U
W
h2 D
W
1-1.5 PU
-1
-0.5
-------
FIGURE 74
2.4
TEMPERATURE CORRECTION FACTORS
MOTORCYCLES
BAG 2 - CARBON MONOXIDE
Low Altitude
1980-1-
2.2-
2-
g$
§ 1.8-
O
W
04
1.6-
1980-t-
1.4-
1.2-
1978-79
1-
Pr«-1978
•2.4
1978-79
-2.2
•* 8
•1.8 §
H-1
H
O
W
ct:
•1.6 g
O
1-145:
PU
\-l2 W
Pr«-1978
-1
0.8
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
0.8
-------
FIGURE 75
2.8
2.6-
2.4 H
I
^ 2.2^
1 -
H **
O
W
8 1.8-
^ 1.6-
W
B
1.4-
1.2-
1-
0.8
TEMPERATURE CORRECTION FACTORS
MOTORCYCLES
BAG 3 - CARBON MONOXIDE
Low Altitude
Pr«-1978
1978-79
1980+
1980+
1978-79
Pr«-1978
50
r "^ r
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
2.8
•2.6
•2.4
-2
§
1
H
O
K8 §
CJ
-1.6
-1.4
hl.2
-1
"OS
W
0.8
-------
FIGURE 76
TEMPERATURE CORRECTION FACTORS
MOTORCYCLES
BAG 1 - OXIDES OF NITROGEN
Low Altitude
a-
g 1.8-
0
§ 1.6-
CORRECT1
¥+
'+-
W
<; I-2 •
W
CU
S i"
0.8-
Pr«-1978
1978+ X^^
Pr«-1978 ' . 1978+
10 30 50 70 90 110
AMBIENT TEMPERATURE (F)
2.2
•2
•1.8 g
U
1.6 |$
H
U
W
•1.4 g
W
-1.2
|