Exhaust Emission Data Sheet

ManualsBrandsCummins Power Generation ManualsLiquid-CooledCummins Ag Spec 175kW Open Diesel Generator (120/240V Single-Phase)

C175D6D

60 Hz Diesel Generator Set

Cummins Inc. Data and specification subject to change without notice EDS-3045a

(09/18)

Engine Information:

Model:

Cummins QSB7-G5 NR3

Bore:

4.21 in. (106.9 mm)

Type:

4 cycle, in-line, 6 cylinder diesel

Stroke:

4.88 in. (123.9 mm)

Aspiration:

Turbocharged and Charge Air

Cooled

Displacement:

408 cu. in. (6.7 liters)

Compression Ratio:

17.2:1

Exhaust Stack Diameter:

4 in (101.6 mm)

Emission Control Device:

Turbocharged and Charge Air

Cooled

1/4

1/2

3/4

Full

Performance Data

Standby

Prime

BHP @ 1800 RPM (60 Hz)

154

213.3

273.1

215.4

Fuel Consumption (gal/Hr)

5.2

7.8

10.4

13.1

11.9

Exhaust Gas Flow (CFM)

718.5

1062.4

1185.5

1320.2

1228.7

Exhaust Gas Temperature (°F)

704.5

795.2

847.6

896.7

852.3

Exhaust Emission Data

HC (Total Unburned Hydrocarbons)

0.27

0.13

0.06

0.03

NOx (Oxides of Nitrogen as NO

)

1.86

1.93

2.59

3.97

3.45

CO (Carbon Monoxide)

1.68

0.92

0.50

0.22

0.24

PM (Particulate Matter)

0.16

0.10

0.07

0.03

Smoke (Bosch)

0.72

0.66

0.55

0.23

0.21

Sulfur Dioxide (SO

)

0.17

0.15

0.14

All values (except smoke) are cited: g/BHP-hr

Test Conditions

Data is representative of steady-state engine speed (± 25 RPM) at designated genset loads. Pressures, temperatures,

and emission rates were stabilized.

Fuel Specification:

ASTM D975 No. 2-D diesel fuel with 0.03-0.05% sulfur content (by weight), and

40-48 cetane number.

Fuel Temperature:

99 ± 9 °F (at fuel pump inlet)

Intake Air Temperature:

77 ± 9 °F

Barometric Pressure:

29.6 ± 1 in. Hg

Humidity:

NOx measurement corrected to 75 grains H

O/lb dry air

Reference Standard:

ISO 8178

The NOx, HC, CO and PM emission data tabulated here are representative of test data taken from a single engine under the test conditions

shown above. Data for the other components are estimated. These data are subjected to instrumentation and engine-to-engine variability.

Field emission test data are not guaranteed to these levels. Actual field test results may vary due to test site conditions, installation, fuel

specification, test procedures and instrumentation. Engine operation with excessive air intake or exhaust restriction beyond published

maximum limits, or with improper maintenance, may results in elevated emission levels.