RICE Reciprocating Internal Combustion Engine

1 2SLB Two stroke, Lean burn

2 4SLB Four stroke, Lean burn

3 4SRB Four Stroke, Rich burn

4 CI Compression ignition.

Source Clasification Code (SCC) Description 

EPA

20100102

Internal Combustion engines; Electric Generation; Distilate Oil 

(Diesel); Reciprocating

20200104

Internal Combustion engines; Industrial; Distilate Oil (Diesel); 

Reciprocating: Cogeneration

20200204

Internal Combustion engines; Industrial; Natural Gas; 

Reciprocating: Cogeneration

20200255

Internal Combustion engines; Industrial; Natural Gas; Two 

Cycle (C)lean burn

20200301

Internal Combustion engine; Gasoline (Petrol); Reciprocating

20300301

Internal Combustion engine; Gasoline (Petrol); Reciprocating

20400401

Internal Combustion Engine; Testing; Reciprocating engine; 

Gasolene.

taken from Transocean's emissions decleration, calculated 

from fuel consumption

TO RIG CODE SHIP NAME

CRL C.R. Luigs

DD1 Development Driller 1

DSP Discoverer Spirit

DWN Deepwater Nautilus

DWP Deepwater Pathfinder

Using Actual measured results from the DW Nautilus. 

DWN Deepwater Nautilus calc

Differential
20200104

Internal Combustion engines; Industrial; Distilate Oil (Diesel); 

Reciprocating: Cogeneration

For calculation purposes, using one engine at 1451 kW (30%) load, and taknig the annual fuel consumption figure. 

1/1/2010 46,760

12/31/2010 52,454

Runnig Hours 2010 5,694

Average Load (30 %) 1550

2010 Calc kW·Hr. 8,825,700

Fuel consumption @ 30% 204.56

Calculated cosumption 1 eng 1,805.35
Engine Type Category for Application 

of Reduction

NOX 2005 (tons) CO 2005 (tons) VOC 2005 (tons) PM2.5 2005 (tons)

CI CI 17,662 3,792 1,294 645

CI CI 494 128 18 31

SI SI, generic 704 413 110 14

SI 2SLB 591 288 70 22

SI 4SLB 660 1,966 110 26

SI 4SRB 348 4,250 245 80

SI 4SLB 647 11,538 738 44

2007 TOTAL Fuel Tonnes NOX (Tonnes) CO (Tonnes) VOC (Tonnes)

8760 19,518 1,159 306 39

8760 10,801 642 170 22

8046 11,529 685 181 23

8567 7,380 438 116 15

8760 9,452 561 148 19

Ratio 3.78 29.7

 7,221 372 98.31 12.52

98% 85% 85% 85%
CI Tons 494 128 18 31

Tonnes 448 116 16

83% 85% 77%

al fuel consumption figure. 

kW

kW·Hr.

g/kW*Hr.

Tonnes
N2O SO2 CH4 CO2

 4 78 4 62,459

 2 43 2 34,562

 3 46 2 36,894

 2 30 1 23,616

 2 38 2 30,247

1 lb 2000 lb

0.45 Kg 907 kG
0.907 Tonnes
Room 

temp

Load 

Engine Load % Turbo RPM Turbo R/s mmHg hPa (millibar)

Charge 

Air Press 

P (Bar)

Charge 

Air temp 

24 1218 25.9% 12183 203.4 755 1006.6 0.35 33

12227

24 2435 51.8% 17720 295.4 755 1006.6 1.00 41

17730

24 3653 77.7% 21722 363.0 756 1007.9 1.70 44

21832

27 4870 103.6% 25106 419.0 756 1007.9 2.55 55

25170

27 5357 114.0% 26190 218.3 756 1007.9 2.85 60
Charge 

Air 

(millibar)

Pressure 

Ratio

Volume 

(m3/s)

Fuel 

Consump

tion 

g/kWHr.

Fuel 

Consumption 

g/Hr.

350 1.35 1.6 225 274.1

1000 1.99 2.58 190 462.7

0.0

1700 2.69 3.51 178 650.2

0.0

2550 3.53 4.88 180 876.6

2850 3.83
Time

Pressure Differential. 

Charge Air Cool (Bar)

Pressure 

Differential. Turbo 

Charger Inlet (mBar)

'7/21/2011 2:28:20 PM' 0.47 26.86

Time

Fuel Consumption 

(g/kW*hr)

Pressure Ratio 

(ratio)

'7/21/2011 2:28:20 PM' 204.56 1.46

Load 1549.78 kW

Fuel consumption 204.56 g/kW*Hr.

1141260561.574 g/Hr

Fuel consumption/cyl 0.0225 M3/s

Air flow 12534.11 M3/Hr

3.48 M3/s

Air flow/ cyl 0.29 M3/s

Air Fuel ratio 12.9 :1

For high load using test bed results. 

DEWT cells required Date / time sec Runtime
Units 

Testo inputs 

Date / time sec Runtime

3/18/2010 9:09:23 tt 112

Single Line Calculation Vasa 12 V 32

Load 4870 kW

Fuel consumption 180.00 g/kw*Hr.

3155824575.962 g/Hr

Fuel consumption/cyl 0.0621 M3/s

Air flow 33,488.51 M3/Hr

9.30 M3/s

Air flow/ cyl 0.78 M3/s

Air Fuel ratio 12.5 :1
Charge Air Temp. 

Inlet (degC)

Load at 

Generator (kW)

Load at Engine 

Shaft (kW)

Exhaust Gas 

Temp. Turbo 

Charger A outlet 

(degF)

Exhaust Gas Temp. 

Turbo Charger B 

outlet (degF)

Turbo 

Charger A

Speed 

(RPM)

51.59 1451.21 1549.78 46.98 80.58 15476.77

Volumetric Flow 

(M3/hr)

Volumetric Flow 

Corrected 

(M3/hr)

Turbo RPS from 

Pressure (RPS)

Turbo Efficiency 

(%) Fuel Flow (M3/hr)

Exhaust 

Flow 

(M3/hr)

13081.07 12534.11 222.01 110.16 269.46 12803.57

comp ratio 12 :1

30.9% Compression pV1.3 

= c

Inlet V/V opens 45 ° BTDC

V/v dia 95 mm

cyl displacement 28.15 Ltr

Clearance vol 2.559091 Ltr

Opening vol 8.042477193 Ltr opening stroke

30% 100% opening vol

P1 1.48 3.56 Bar abs

P2

T1 51.59 55 °C

T2

V1 30.71 30.71 Ltr

V2 2.56 2.56 Ltr

30% pre 

combustion press P2 = P1

 (V1/V2)

1.35 42.34416811 42.34 Bar

100% Pre 

combustion press P2 = P1

 (V1/V2)

1.35 101.880371 101.88 Bar

G4 (kW) % of full load

Shaft Load 

before generator 

losses

E.R. Temp Charge Air Press Charge 

Air Temp
Switchboard 

power kW 4700 oC Bar oC

Converted to °C 

from Ta measured 

in Testo.

4870 30.4

4870 104% 5039.9 27.00 2.6 55
Turbo 

Charger 

B Speed 

(RPM)

Nox 

(PPM)

Engine 

room 

Temp 

(degF)

Engine 

room 

Temp 

(degC)

Engine 

room 

Pressure 

(Pa)

8707.256 703.00 96.70 35.94 1009.00

Exhaust 

Density

Nox 

Density

TOTAL 

Nox 

(gm/kW*h

r)

0.93 1.28 10.54

opening stroke 76.29

opening vol 8.042477

Turbo A

RPM

Turbo B 

RPM

Turbo 

RPS

Exh Temp 

after 

Blower

% O2 (19) ppm CO 

(19)

ppm NO 

(19)

ppm SO2 

(19)

ppm NO2 

(19)
RPM RPM Revs/sec oC % ppm ppm ppm ppm 

% O2 (19) ppm CO 

(19)

ppm NO 

(19)

ppm SO2 

(19)

ppm NO2 

(19)

14.11 13 767 1002 13.9

25106 25170 418.97

In comparing the turbo 

RPM, the value should stay 

above 95% of test bed 

reading or clean the 

blower. 
ppm H2 

(19)

ppm NOx 

(19)

hPa Pabs 

(19) 

Atmosph

eric 

pressure 

°F Tf (19)

°F Ta (19) 

Ambient 

or inlet 

temp

min RTim 

(19) Fuel (19)

Fuel 

Consump

tion 

Pressure 

Ratio
ppm ppm mBar

oC would 

be easier 

to 

convert 

to oK

g/kWHr.

ppm H2 

(19)

ppm NOx 

(19)

hPa Pabs 

(19) °F Tf (19) °F Ta (19) min RTim (19) Fuel (19)

4 781 1016.2 85.5 86.7 - -

781 1008 180.00 3.53
Volumetric 

flow from 

pressure

Volumetric 

flow 

corrected for 

temp

Turbo 

RPS from 

Pressure 

Ratio

Turbo 

efficency Fuel Flow Exh Gas Flow

Nox 

Density Total Nox
M3/Hr. M3/Hr rev/sec M3/Hr M3/Hr g/m3 g/kWHr.

VTR 304 

Turbocharger

0.85

Answer to 

be inputed 

into RMS 

twice daily

 35,132.95 33,488.51 418.96 100.0% 0.77 33,489.28 1.33 9.18
2.165

28.15 2.5590905

1 2.165 1 2.165

VC 2.559091

1 2.165 1 2.165 1 2.165 1 2.165 1 2.165 1 2.165 1 2.165 1 2.165 1 2.165 1 2.165

25.98

2.165

28.15 28.15

12
12.00