GAS ENGINE TECHNICAL DATA
G3306
ENGINE SPEED (rpm):
COMPRESSION RATIO:
JACKET WATER OUTLET (F):
ASPIRATION:
COOLING SYSTEM:
IGNITION SYSTEM:
EXHAUST MANIFOLD:
COMBUSTION:
EXHAUST OXYGEN (% O2):
1800
10.5:1
210
NA
JW+OC
MAG
WC
Standard Setting
2.0
FUEL:
FUEL SYSTEM:
FUEL PRESSURE RANGE(psig):
FUEL METHANE NUMBER:
FUEL LHV (Btu/scf):
ALTITUDE CAPABILITY AT 77F INLET AIR TEMP. (ft):
APPLICATION:
RATING
(WITHOUT FAN)
(ISO 3046/1)
(NOMINAL)
ENGINE POWER
ENGINE EFFICIENCY
ENGINE EFFICIENCY
Nat Gas
LPG IMPCO
1.5-5.0
80
905
500
Gas Compression
NOTES
LOAD
100%
75%
50%
(1)
(2)
(2)
bhp
%
%
145
33.7
33.7
109
31.5
31.5
73
27.9
27.9
(3)
(3)
(4) (5)
(4) (5)
(6)
(7)
(8)
(9)
(10) (5)
(10) (5)
Btu/bhp-hr
Btu/bhp-hr
scfm
lb/hr
in Hg(abs)
F
BTDC
F
ft3/min
lb/hr
7547
7547
224
995
26.4
88
30
1040
696
1050
8069
8069
181
804
22.3
88
30
993
544
848
9136
9136
138
610
17.8
88
30
943
399
644
(11)(12)
(11)(13)
(11)(13)
(11)(13)
(11)(13)(14)
(11)(13)
(11)(13)
(11)(15)
(11)(15)
g/bhp-hr
g/bhp-hr
g/bhp-hr
g/bhp-hr
g/bhp-hr
g/bhp-hr
g/bhp-hr
% DRY
24.09
1.40
1.60
0.24
0.16
0.23
492
2.0
1.13
21.09
1.50
1.46
0.22
0.15
0.24
526
2.4
1.14
22.10
1.50
1.91
0.29
0.19
0.28
596
2.6
1.14
(16)
(17)(21)
(18)
(19)(21)
(20)
(20)
Btu/min
Btu/min
Btu/min
Btu/min
Btu/min
Btu/min
18217
5652
729
925
4769
3361
14608
4965
584
812
3640
2522
11039
4215
442
689
2619
1759
ENGINE DATA
FUEL CONSUMPTION
FUEL CONSUMPTION
AIR FLOW (77F, 14.7 psia)
AIR FLOW
INLET MAN. PRESSURE
INLET MAN. TEMPERATURE
TIMING
EXHAUST TEMPERATURE - ENGINE OUTLET
EXHAUST GAS FLOW (@engine outlet temp, 14.5 psia)
EXHAUST GAS MASS FLOW
(ISO 3046/1)
(NOMINAL)
(WET)
(WET)
(MEASURED IN PLENUM)
(WET)
(WET)
EMISSIONS DATA - ENGINE OUT
NOx (as NO2)
CO
THC (mol. wt. of 15.84)
NMHC (mol. wt. of 15.84)
NMNEHC (VOCs) (mol. wt. of 15.84)
HCHO (Formaldehyde)
CO2
EXHAUST OXYGEN
LAMBDA
ENERGY BALANCE DATA
LHV INPUT
HEAT REJECTION TO JACKET WATER (JW)
HEAT REJECTION TO ATMOSPHERE
HEAT REJECTION TO LUBE OIL (OC)
HEAT REJECTION TO EXHAUST (LHV TO 77F)
HEAT REJECTION TO EXHAUST (LHV TO 350F)
CONDITIONS AND DEFINITIONS
Engine rating obtained and presented in accordance with ISO 3046/1. (Standard reference conditions of 77F, 29.60 in Hg barometric pressure, 500 ft. altitude.) No overload permitted at
rating shown. Consult the altitude deration factor chart for applications that exceed the rated altitude or temperature.
Emission levels are at engine exhaust flange prior to any after treatment. Values are based on engine operating at steady state conditions. Tolerances specified are dependent upon
fuel quality. Fuel methane number cannot vary more than 3. Part load data may require engine adjustment.
For notes information consult page three.
Data generated by Data Maintenance Utility Version 3.02.06
Ref. Data Set DM5211-07-001, Printed 09Aug2011
Page 1 of 3
GAS ENGINE TECHNICAL DATA
G3306
FUEL USAGE GUIDE
CAT METHANE NUMBER
SET POINT TIMING
DERATION FACTOR
25
30
35
40
45
50
55
60
65
70
75
80
100
14
16
17
19
20
22
24
25
27
28
30
30
ALTITUDE DERATION FACTORS AT RATED SPEED
INLET
AIR
TEMP
F
130
120
110
100
90
80
70
60
50
0.93
0.89
0.86
0.83
0.80
0.77
0.74
0.71
0.68
0.65
0.63
0.60
0.58
0.94
0.91
0.88
0.84
0.81
0.78
0.75
0.72
0.69
0.66
0.64
0.61
0.59
0.96
0.92
0.89
0.86
0.82
0.79
0.76
0.73
0.70
0.68
0.65
0.62
0.60
0.98
0.94
0.91
0.87
0.84
0.81
0.78
0.75
0.72
0.69
0.66
0.63
0.61
0.99
0.96
0.92
0.89
0.85
0.82
0.79
0.76
0.73
0.70
0.67
0.65
0.62
0.98
0.94
0.90
0.87
0.84
0.80
0.77
0.74
0.71
0.69
0.66
0.63
0.99
0.96
0.92
0.89
0.85
0.82
0.79
0.76
0.73
0.70
0.67
0.64
0.98
0.94
0.90
0.87
0.84
0.80
0.77
0.74
0.71
0.68
0.66
0.99
0.96
0.92
0.89
0.85
0.82
0.79
0.76
0.73
0.70
0.67
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
ALTITUDE (FEET ABOVE SEA LEVEL)
MINIMUM SPEED CAPABILITY AT THE RATED SPEED'S SITE TORQUE
(RPM)
INLET
AIR
TEMP
F
130
120
110
100
90
80
70
60
50
1000
1010
1050
1090
1140
1180
1230
1280
1330
1380
1440
1500
1560
1000
1000
1030
1070
1120
1160
1210
1250
1310
1360
1420
1470
1540
1000
1000
1020
1060
1100
1140
1180
1230
1280
1330
1390
1450
1510
1000
1000
1000
1040
1080
1120
1160
1210
1260
1310
1370
1420
1480
1000
1000
1000
1020
1060
1100
1140
1190
1240
1290
1340
1400
1460
1000
1000
1000
1000
1040
1080
1120
1170
1220
1270
1320
1370
1430
1000
1000
1000
1000
1020
1060
1100
1150
1190
1240
1290
1350
1400
1000
1000
1000
1000
1000
1040
1080
1130
1170
1220
1270
1320
1380
1000
1000
1000
1000
1000
1020
1060
1100
1150
1200
1240
1300
1350
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
ALTITUDE (FEET ABOVE SEA LEVEL)
Data generated by Data Maintenance Utility Version 3.02.06
Ref. Data Set DM5211-07-001, Printed 09Aug2011
Page 2 of 3
G3306
GAS ENGINE TECHNICAL DATA
FUEL USAGE GUIDE:
This table shows the derate factor required for a given fuel. Note that deration occurs as the methane number decreases. Methane number is a scale to measure detonation
characteristics of various fuels. The methane number of a fuel is determined by using the Caterpillar Methane Number Calculation program.
ALTITUDE DERATION FACTORS:
This table shows the deration required for various air inlet temperatures and altitudes. Use this information along with the fuel usage guide chart to help determine actual engine power for
your site.
ACTUAL ENGINE RATING:
To determine the actual rating of the engine at site conditions, one must consider separately, limitations due to fuel characteristics and air system limitations. The Fuel Usage Guide
deration establishes fuel limitations. The Altitude/Temperature deration factor and RPC (reference the Caterpillar Methane Program) are added together to establish air system
limitations. To determine the actual power available, take the lowest rating between 1) and 2).
1) Fuel Usage Guide Deration
2) 1-((1-Altitude/Temperature Deration) + (1-RPC))
MINIMUM SPEED CAPABILITY AT THE RATED SPEED'S SITE TORQUE (RPM):
This table shows the minimum allowable engine turndown speed where the engine will maintain the Rated Speeds Torque for the given ambient conditions.
NOTES:
1. Engine rating is with one engine driven jacket water pump. Tolerance is 3% of full load.
2. ISO 3046/1 engine efficiency tolerance is (+)0, (-)5% of full load % efficiency value. Nominal engine efficiency tolerance is 5.0% of full load % efficiency value.
3. ISO 3046/1 fuel consumption tolerance is (+)5, (-)0% of full load data. Nominal fuel consumption tolerance is 5.0% of full load data.
4. Air flow value is on a 'wet' basis. Flow is a nominal value with a tolerance of 5 %.
5. Inlet and Exhaust Restrictions must not exceed A&I limits based on full load flow rates from the standard technical data sheet.
6. Inlet manifold pressure is a nominal value with a tolerance of 5 %.
7. Inlet manifold temperature is a nominal value with a tolerance of 9F.
8. Timing indicated is for use with the minimum fuel methane number specified. Consult the appropriate fuel usage guide for timing at other methane numbers.
9. Exhaust temperature is a nominal value with a tolerance of (+)63F, (-)54F.
10. Exhaust flow value is on a 'wet' basis. Flow is a nominal value with a tolerance of 6 %.
11. Emissions data is at engine exhaust flange prior to any after treatment.
12. NOx values are "Not to Exceed".
13. CO, CO2, THC, NMHC, NMNEHC, and HCHO values are "Not to Exceed" levels. THC, NMHC, and NMNEHC do not include aldehydes.
14. VOCs - Volatile organic compounds as defined in US EPA 40 CFR 60, subpart JJJJ
15. Exhaust Oxygen tolerance is 0.5.
16. LHV rate tolerance is 5.0%.
17. Heat rejection to jacket water value displayed includes heat to jacket water alone. Value is based on treated water. Tolerance is 10% of full load data.
18. Heat rejection to atmosphere based on treated water. Tolerance is 50% of full load data.
19. Lube oil heat rate based on treated water. Tolerance is 20% of full load data.
20. Exhaust heat rate based on treated water. Tolerance is 10% of full load data.
21. Total Jacket Water Circuit heat rejection is calculated as: (JW x 1.1) + (OC x 1.2). Heat exchanger sizing criterion is maximum circuit heat rejection at site conditions, with applied
tolerances. A cooling system safety factor may be multiplied by the total circuit heat rejection to provide additional margin.
Data generated by Data Maintenance Utility Version 3.02.06
Ref. Data Set DM5211-07-001, Printed 09Aug2011
Page 3 of 3
GAS ENGINE TECHNICAL DATA
G3306
ENGINE POWER (bhp):
ENGINE SPEED (rpm):
EXHAUST MANIFOLD:
145
1800
WC
COOLING SYSTEM:
JW+OC
JACKET WATER OUTLET (F):
210
Free Field Mechanical and Exhaust Noise
SOUND PRESSURE LEVEL (dB)
Octave Band Center Frequency (OBCF)
100% Load Data
dB(A) 63 Hz 125 Hz 250 Hz 500 Hz
Mechanical
Distance from
3.3
91.7
72.4
82.4
83.4
84.9
Sound
the Engine (ft) 23.0
81.7
65.6
76.1
74.1
72.6
49.2
75.7
59.6
70.1
68.1
66.6
Exhaust Sound Distance from
4.9
110.4
109
111
109
101
the Engine (ft) 23.0
97
95.5
98
91
86.5
49.2
90.4
90.2
93.2
87.7
80.7
1 kHz
86.9
78.1
72.1
104
89
82.7
2 kHz
86.4
76.1
70.1
104.5
90.5
83.2
4 kHz
81.9
70.6
64.6
102
91.5
84.7
8 kHz
77.9
65.6
59.6
99
87.5
79.7
Sound Data
Data Variability Statement:
Sound data presented by Caterpillar has been measured in accordance with ISO 6798 in a Grade 3 test environment. Measurements made in
accordance with ISO 6798 will result in some amount of uncertainty. The uncertainties depend not only on the accuracies with which sound pressure
levels and measurement surface areas are determined, but also on the 'near-field error' which increases for smaller measurement distances and lower
frequencies. The uncertainty for a Grade 3 test environment, that has a source that produces sounds that are uniformly distributed in frequency over the
frequency range of interest, is equal to 4 dB (A-weighted). This uncertainty is expressed as the largest value of the standard deviation.
Data generated by Data Maintenance Utility Version 3.02.06
Ref. Data Set DM5211-07-001, Printed 09Aug2011
Page 1 of 1
