EPA-AA-TEB 70-1
Emissions from Standard M-151 Jeep
February 1970
Michael A. Caggiano
Division of Motor Vehicle Pollution Control
National Air Pollution Control Administration
Department of Health, Education, and Welfare
-------
- 1 -
Subject; Emissions from Standard M-151 Jeep
A series of tests have been completed on a standard Army
M-151 Jeep, No. 2D4284. The testing consisted of hot and
cold starts as received, hot starts with a vacuum advance
distributor and hot start with leaned idle A/F. Emissions
were measured simultaneously by the 1970 Federal procedure
and the Constant Volume Sampling (GVS) procedure. In
addition, oxides of nitrogen (NOX) were measured in the CVS
sample bag by the Saltzman technique.
A summary of the data is included in Table I.
In the "as received" condition the idle CO was 7 to 8 percent
with a warm engine. By reducing the idle CO to approximately
3 percent, seven-cycle hot start hydrocarbons were reduced
about 140 ppm and CO about 1 percent. The vacuum advance
distributor supplied by ATAC increased both hydrocarbon and
CO ancl caused a slight, perhaps insignificant, decrease in
NOX.
2-1969
-------
TABLE I
CVS Procedure 1970 Federal.Procedure
HC (FID) CO NOX HC . CO HC CO
g/mile g/mile PPM :•%
As received cold start 8.0 100.9 4.0 4.8 73.0 522 4.2
As received hot start 8.0 96.9 4.1 5.4 83.7 584 4.8
Vac. Adv. Dist. hot start 8.8 99.1 3.6 8.3 102.1 901 5.9
3% Idle CO hot start 6.1 85.9 4.1 61.7 440 3.6
-------
HC
244.7
574.0*
289.4*
3439.4*
387.3
207.7
6025.4*
TOTAL
433.3
958.3*
558.8*
1831.5*
361 .0
234.7
4378.9*
TOTAL
375.6
848.8*
479.9*
1360.8*
519.0*
425.6*
3863.3*
TOTAL
325.3
703.3*
224.1
1547.3*
299.8
221.8
3175..8*
TOTAL
316.8
610.5*
232.8
1120.0*
297.3
218.9
3195.3*
TOTAL
2 92 . 4
537.5*
237.9
1309.5*
255.2
211.9
31 72.8*
TOTAL
AVE 1-4
CO C02
10.38 8.51
3.05 12.15
2.98 12.59
7.62 8.01
9.35 8.85
1.78 13.00
6.44 6.54
FOR CYCLE 1
9.19 9.08
5.48 10.81
1.67 13.60
7.19 8.90
8.58 9.43
2.02 13.27
6.99 7.16
FOR CYCLE 2
8.49 9.47
5.31 11.04
2.08 1 3 • 42
5.49 10.16
7.53 10.06
3.33 12.61
7.16 7.45
FOR CYCLE 3
7.86 9.92
5.28 11.13
2.48 13-24
6.90 9.1 6
7.08 10.38
2.79 12.99
6. ,87 7.71
FOR CYCLE 4
7.76 9.92
5.26 11.13
3.41 12.63
6.77 9.57
6.63 10.55
2.81 12.93
6.66 7.72
FOR CYCLE 6
7.52 10.09
5.38 11.09
3.18 12.77
6.53 9.14
6.53 10.63
3.22 12.67
6.77 7.68
FOR CYCLE 7
632.3PPM HC
TRIP COMPOSITE
HC MASS = 4.82
5-0030 1
1-06-69 ARMY
FACTOR
1 .04
1 .01
1 .01
0.93
1 .04
1 .03
0.89
658.3
1 .02
0.99
0.96
1 .00
1 .03
1 .00
0.94
672.3
1 .03
0.99
0.97
1 .0 1
1 .01
0.98
0.95
684.5
1 .02
1.00
0.98
1 .01
1 .02
0.99
.0.99
514.8
1 .02
1 .01
0.99
1 .02
1 .02
0.99
1 .00
468.1
1 .02
1 .01
0.99
1 .05
1 .02
1 .00
1.00
459.0
3.96CO
522
CO MASS
CHC
253.8
582.0
291 .3
3209.9
402.4
213.3
5369.1
PPM HC 3
443.8
952.3
538.5
1833.8
370.6
234.2
4126.9
PPM HC 3
385.5
842.3
464.5
1371 .5
522.8
418.6
3683.5
PPM HC 4
331 .9
70 1.5
220.6
1569.8
305.1
219.8
31 57.1
PPM HC 4
324.4
614.0
231 .3
1145.9
303.8
217.7
3193.3
PPM HC 4
299.1
542.8
235.9
1 3 73 . 0
260.9
211 .8
31 73.8
PPM HC 4
AVE 6-7
.3 PPM HC
= 72.97
JEEP 2D4284 13557
CCO
10.77
3.09
3 . 00
7.1 1
9.71
1 .83
5.74
.48 CO
9.41
5.44
1 .61
7.20
8.81
2.01
6.58
.91 CO
8.71
5.27
2.01
5.54
7.58
3.28
6.83
.29 CO
8.02
5.26
2.44
7.00
7.21
2.77
6.84
.16 CO
7.94
5.29
3.38
6 .92
6.78
2.80
6.65
.25 CO
7.69
5.43
3.15
6.85
6.67
3.21
6.77
.43 CO
WHC
0 10 . 7
141 .9
034.4
198.9
020.1
097.0
155.6
018.6
232.3
063.5
1 13.7
018.5
106.5
119.7
01 6.2
205.4
054.8
085.0
026.1
190.4
106.8
013.9
171.1
026.0
097.3
015.3
100.0
091 .5
.013.6
149.8
027.3
071 .0
015.2
099.0
092.6
012.6
132.4
027*8
085.1
013.0
096.3
092.0
463.5PPM HC 4.34
4.21 CO
MILES
3000#
WCO
0.45
0 . 75
0.35
0.44
0.49
0.83
0.1 7
0.40
1 .33
0.19
0.45
0.44
0.92
0.19
0.37
I .29
0.24
0.34
0.38
1.49
0.20
0.34
1 .2.8
0.29
0.43
0.36
1 .2:6
0 .20
0.33
1 .29
0.40
0.43
0.34
1 .27
0.19
0 . 32
1 .33
0.37
0 . 42
0.33
1 .46
0.20
CO
1962 EXPERIMENTAL STANDARD TRANff.
'(r*sf
-------
HC CO C02
447.6 9.67 8.81
614.3* 4.24 11.66
260.5 2.74 12.93
5000.0* 5.08 7.28
359.5 9.75 8.67
249.8 2.48 12.87
6511.6* 6.53 6.08
TOTAL FOR CYCLE 1
546.5 9.87 8.50
970.3* 5.93 10.49
374.3 2.70 12.91
2133.8* 7.46 8.23
417.6 8.62 9.30
300.9 2.71 12.82
3888.5* 7.47 6.75
TOTAL FOR CYCLE 2
488.9 10.06 8.40
707.3* 6.65 10.16
299.1 3.09 12.68
1535.5* 7.30 8.54
346.1 8.00 9.68
263.1 3.17 12.59
3760.5* 7.11 6.96
TOTAL FOR CYCLE 3
397.5 8.89 9.11
869.3* 6.56 10.09
273.9 2.87 12.84
T699.5* 7.10 8.77
"321 .5 7.51 10.00
2^41.6 3.55 12.3"8
4468-8* 7.35 6.77
TOTAL FOR CYCLE 4
370.9 8.89 9.16
:699.3* ,5.53 K0..86
273.0 c 3.65 T2.35
1558.5* 7.47 8.65
292.9 7.22 10.14
235.8 3.58 12.36
-37-97.8* 7.31 6.99
/TOTAL FOR CYCLE 6
333.1 8.71 9.29
610.8 6.21 1-0.34
271.5 4.04 12.12
1250.9* 6.53 9.21
551.0* 7.19 10.15
229.2 3.52 12.38
3779.3* 7.24 6.95
TOTAL FOR CYCLE 7
AVE 1-4 675.0PPM HC
TRIP COMPOSITE
HC MASS s 5.40
5-0031 11-06-69 ARMY
1962 EXPERIMENTAL HOT
FACTOR
1 .02
1 .00
0.99
0.95
1 .04
1 .01
0.88
795.0
.03
.00
0.99
.02
.03
.00
0.99
707.5
.04
.02
.00
.,05
.03
.00
0.99
577.0
1 .04
1 .01
0.99
1 .02
1 .03
1 .00
0.95
621 .5
.03
.0 1
.100
.03
.03
1 .01
0.98
550.8
.03
.03
.00
.05
.01
.01
0.99
52 1 . 5
4.60CO
584.
CO MASS =
CHC
458.9
616.3
258.9
4759.8
373.9
251 .7
5759.8
PPM HC 3
564.5
969.5
369.8
2167.9
430.4
300.6
3839.8
PPM HC 4
507.3
718.8
298.0
1605.3
356.8
263.6
3739.3
PPM HC 4
41 1.8
880.3
272.5
1739.5
330 . 4
.2 42 .8
4240.1
PPM HC 5
383.6
705.0
273^5
16'05.8
301.5
237.2
3703.3
PPM HC 4
344.6
,627.3
272.5
1310.0
5 5 6.- 8
230.8
3737.3
PPM HC 5
AVE 6-7
5 PPM HC
83.66
JEEP 2D4284 13567M
CCO
9.91
4.25
2.72
4.84
10.14
2.50
5.78
.89 CO
10.20
5.92
2.67
7.58
8.88
2.71
7.38
.54 CO
10.45
6.75
3 .08
7.63
8.25
3.18
7.07
.98 CO
9.21
6.64
2.85
7.26
7.72
3.57
6.97
.00 CO
9.19
5.57
3*,66
7*. 6 9
7.44
. 3 .60
7.18
.87 CO
9. '02
6.38
4 .0 6
6.85
7.26
3.55
7.16
.02 CO
WHC
019.3
150.3
030.6
294.9
018.7
1 14.5
1 66.9
023.7
236.6
043.6
134.3
021.5
136.8
111.3
021 .3
1 75.3
035.2
099.5
017.8
119.9
108.4
017.3
214.7
032.1
107.8
01 6.5
110.5
123.0
016.1
1 71 .9
.032.3
099.5
015.1
107.9
108.3
014.5
153.0
032.1
081 .2
027.8
105.0
108.3
536.0PPM HC 4.94
4.82
ILES
START STANDARD TRANS. (~/>
CO
3000#
-
-------
HC CO C02
1511.6* 6.78 9.55
809.3* 6.01 10.61
364.4 3.89 12.27
3073.1* 6.46 7.96
482.6 7.69 9.92
423.1 4.99 1 1 .53
5287.0* 6.56 6. 69
TOTAL FOR CYCLE 1
1522.8* 8.52 8.61
921.8* 6.16 10.60
566.8* 4.50 11.90
2480.4* 6.24 8.56
438.0 8.29 9.47
358.5 5.18 1 1 .43
5080.0* 6.93 6.40
TOTAL FOR CYCLE, 2
1657.5* 8.18 8.54
1447.3* 6.42 10.34
772.8* 5.08 11.45
1237.8* 6.36 8.83
462.9 8. 77 9.11
353.5 5.14 11.45
4391.8* 6.86 6.65
TOTAL FOR CYCLE 3
1442.8* 8.33 8.77
1205.0* 6.52 10.32
721.3* 5.40 11.2.3
1022.9* 5.76 9.55
485.4 8.33 9.41
349.3 4.58 11.74
4134.8* 6.66 6.61
TOTAL FOR CYCLE 4
1470.6* 8.21 8.75
1180.1* 7.00 9.84
721.3* 5.02 11.48
1301 .8* 6.39 8.60
438.5 8.76 9.12
359.4 5.62 11.09
3731.3* 6.32 6.89
TOTAL FOR CYCLE 6
1757.3* 8.20 8.40
1395.0* 6.69 10.14
634.5* 5.15 11.41
2181 .6* 6.94 8.32
793.0* 8.14 9.48
576.8* 4.79 11.61
4783.0* 6.91 6.44
TOTAL FOR CYCLE 7
AVE 1-4 842.8PPM HC
TRIP COMPOSITE
HC MASS = 8.32
FACTOR
0.99
1 .00
0.99
1 .00
1 .01
1 .00
0.92
"851 .8
1 .00
0.99
0.98
1 .01
1 .03
1 .01
0.94
832.3
1 .00
0.96
0.98
1 .09
1 .03
1 .01
1 .00
884.8
1 .00
0.97
0.98
1.07
1 .03
1.01
1 .01
803.3
1 .00
0.99
0.98
1 • 10
1 .04
1 .01
1 .03
818.8
1 .01
0.97
0.99
1 .02
1 .01
0.99
0.96
1048.8
5.66CO
901
CO MASS
CMC
1502.9
809.8
361.5
3069.3
489.4
423.5
4886.5
PPM HC
1 520.8
910.3
556.5
2504.9
450.1
3 60 . 8
4798.8
PPM HC
1665.5
1388.1
755.8
1343.8
478.9
355.6
4091 .8
PPM HC
1442.8
1 1 73.8
710.5
1095.1
498.6
351 .3
4160.1
PPM HC
1475.5
1169.9
707.8
1429.1
454.8
364.3
3842.8
PPM HC
1769.5
134,9.0
62 6 . 5
2234.4
797.8
571 .5
4603.5
PPM HC
AVE 6-
.3 PPM HC
= /.02.13
CCO
6.74
6.01
3.86
6.45
7.80
4.99
6.06
5.44 CO
8.50
6.08
4.42
6.30
8.52
5.21
6.54
5.73 CO
8.22
6.16
4.96
6.90
9.07
5.1 7
6.86
5.86 CO
8.33
6.35
5.32
6.1 7
8.55
4.61
6.70
5.62 CO
8.23
6.94
4.93
7.02
9.08
5.70
6.51
6.29 CO
8.25
6.46
5.09
7.11
8.19
4.75
6.65
5.72 CO
7 933.8PPM
5.88 CO
'
WHC
063.1
197.6
042.6
190.2
024.5
192.7
141 .6
063.9
222.0
065.6
155.2
022.5
164.1
139.1
069.9
338.5
089.1
083.3
023.9
161 .8
1 18.7
060.6
286.3
083.8
067.9
024.9
159.8
120.7
062.0
285.3
083.5
088.6
022 . 7
165.7
111.4
074.3
329.0
073.9
138.4
039.9
259.9
133.4
HC 6.01
WCO
0.28
1 .47
0.46
0.40
0.39
2.27
0.18
0.36
1 .48
0.52
0.39
0.43
2.37
0.19
0.35
1.50
0.59
0.43
0.45
2.35
0.20
0.35
1 .55
0.63
0.38
0.43
2.10
0.19
0.35
1 . 69
0.58
0.44
0.45
2.59
0.19
0.35
1 .58
0.60
0.44
0.41
2.16
0.19
CO
5-0039 11-12-69 FORD ARMY JEEP 02D4284 13589 MILES 3#3000
EXP. W/NEW DIET . 4 SPEED TRANS. HOT STSRT
-------
HC
207.9
356.0
248.2
1386.1 *
283.5
194.8
41 44.5*
TOTAL
248.7
371 .1
282.0
1478.5*
257.3
218.6
3477.5*
TOTAL
284.5
352.1
253.4
1696.3*
216.3
CO
2.61
3.52
4.57
4.41
7.64
1 .92
4.26
C02
13.21
12.39
12.04
10.49
10.15
13.46
8.51
FOR CYCLE 1
2.85
4.35
5.48
3.64
6.88
3.38
4.16
13.19
12.07
1 1 .47
10.84
10.65
12.71
8.95
FOR CYCLE 2
2.04
4.24
5.40
3.10
6.22
13.46
12. 14
11.54
10.82
1 1 .06
FACTOR
0.98
1 .00
0.99
1 .02
1 .01
0.99
0.96
429.1
0.97
0.99
1 .00
1 .02
1.01
0.99
0.98
436.1
0.98
0.99
1 .00
1.02
1 .01
CHC
204.3
354.9
246.4
141 5.0
287.8
193.0
3972.5
PPM HC
242.3
367.3
281 .5
1502.4
259.5
216.4
3409.1
PPM HC
278.8
348.6
253.0
1730.8
218.2
CCO
2.56
3.51
4.54
4.50
7.76
1 .90
4.08
3.15 ;CO
2.77
4.31
5.47
3.70
6.94
3.34
4.07
4.03 CO
2.00
4.20
5.39
3.17
6.26
WHC
008.6
086.6
029.1
087. 7
014.4
087.8
1 15.2
010.2
089.6
033.2
093.1
013.0
098.5
098.8
011 .7
085.0
029.9
107.3'-
010.9
WCO
0.1 1
0.86
0.54
0.28
0.39
0.87
0.12
0.12
1.05
0.65
0.23
0.35
1.52
0.12
0.08
1 .02
0.64
0.20
0.31
1
76.2 2.52 13.20
4062.5* 3.69 8.66
TOTAL FOR CYCLE 3
0.99 174.3 2.50 079.3 1.14
0.97 3953.0 3.59 114.6 0.10
438.5 PPM HC 3.49 CO
219.8
283.6
234.2
1683.5*
. 204.6
184.9
3715.8*
TOTAL
436.6
425.4
234.6
1923.8*
226.1
181.1
3775.3*
TOTAL
390.6
365.5
255.8
1428.1*
202.2
1 64.9
3585.8*
TOTAL
1 .91
4.07
4. 60
3.13
, 5. 74
2.99
3.41
13.50
12.24
12.04
10.63
1 1 .36
12.95
8.88
FOR CYCLE 4
1 .39
4.12
4.63
2.60
6.44
3.03
3.45
13.29
12.09
12.04
10.45
10.92
13.00
8.72
FOR CYCLE 6
1.35
4.39
6.42
3.15
5.58
2.50
3.10
13.55
1 1 .96
10.88
10.73
1 1 .47
13.25
9.00
FOR CYCLE 7
0.99
0.99
0.99
1 .03
1 .00
0.99
0.99
413.4
1 .00
0.99
0.99
1.05
1.01
0.98
1 .00
475.3
0.99
1.00
1 .01
1 .05
1 .00
0.99
1 .00
41 6.4
216.8
281 .9
232.7
J740.5
205.2
183.0
3687.5
PPM HC
437.6
421 .9
232.8
2015.6
227.6
1 78 . 4
3767.5
PPM HC
386.4
364.0
258.0
1493.6
202.3
162.9
3600.5
PPM HC
1 .88
4.04
4.57
3.23
5.76
2.95
3.39
3.53 CO
1 . 40
4.09
4.59
2.73
6.49
2.98
3.44
3.54 CO
1 .33
4.37
6.47
3.29
5.58
2.47
3.12
3.58 CO
009.1
068.8
027.4
107.9.^-
010.3
083.3
106.9
018.4
102.9-'
027.5
125.0
01 1 .4
081 .1
109.2
016.2
088. 8ju,
030.4
092.6
010.1
074.1
104.4
0.08
0.99
0.54
0.20
0.29
1 .34
0.10
0 • 0 6
1.00
0.54
0.17
0.32
1 .36
0.10
0.06
1.07
0.76
0.20
0.28
1.12
0.09
VE 1-4 429.1 PPM HC
TRIP COMPOSITE
HC MASS = 4.06
3.55CO AVE 6-7 445.9PPM HC 3.56 CO
439.8 PPM HC 3.56 CO
CO MASS = 61 . 70
5-0048 12-03-69 FORD ARMY JEEP -#204284
EXP. CARB RESET 4 SPEED
13636 MILES 3000*
------- |