STANDARD EQUIPMENT
AIR CLEANER - Two, dry type with rain shield and service indicator.
AIR FUEL RATIO CONTROL(AFR) - Integrated ESM - AFR catalyst rich-burn control,
main fuel gas regulator actuators, exhaust O2 sensor(s), and post turbocharger exhaust
thermocouple. Factory mounted and tested. AFR maintains emissions through load and
speed changes. The ESM - AFR meets Canadian Standards Association Class 1, Division
L7044GSI
2, Group D hazardous location requirements. Note: For dual fuel applications, ESM - AFR
system will control the primary fuel source.
BARRING DEVICE - Manual.
BATTERY BOX - Ship loose battery box designed to accommodate two Series 31 12 VDC batteries. Includes
power disconnect switch and 20 foot (6.1 m) cable for connection to ESM Power Distribution Box.
BEARINGS - Heavy duty, replaceable, precision type. VHP™ Series Four®
BREATHER - Closed system.
CONNECTING RODS - Drop forged steel, rifle drilled.
Gas Engine
CONTROL SYSTEM - Waukesha Engine System Manager (ESM) integrates spark timing control, speed 1120 - 1680 BHP
governing, detonation detection, start-stop control, diagnostic tools, fault logging and engine safeties. Engine
Control Unit (ECU) is central brain of the control system and main customer interface. Interface with ESM is
through 25 foot (7.6 m) harness to local panel, through MODBUS RTU slave connection RS-485
multidrop hardware, and through the Electronic Service Program (ESP). Customer connections are
only required to the local panel, fuel valve, and 24V DC power supply. Compatible with Woodward
load sharing module. ESM meets Canadian Standards Association Class I, Division 2, Group D,
hazardous location requirements.
CRANKCASE - Integral crankcase and cylinder frame. Main bearing caps drilled and tapped for
temperature sensors. Does not include sensors.
CRANKSHAFT - Forged steel, seven main bearings, counterweighted and dynamically balanced.
CYLINDERS - Removable wet bainitic cast iron type cylinder liners, chrome plated on outer diameter.
CYLINDER HEADS - Twelve interchangeable. Four valves per cylinder, with water cooled exhaust valve
seats. Roller valve lifters and hydraulic push rods. Flange mounted ignition coils.
ELECTRONIC SERVICE PROGRAM (ESP) - Microsoft® Windows-based program provided on CD-ROM for
programming and interface to ESM. Includes E-Help for troubleshooting any ESM faults. Serial harness is
provided for connection of a customer supplied laptop to the ECU RS-232 port.
ENGINE MONITORING DEVICES - Factory mounted and wired sensors for lube oil pressure and temperature;
intake manifold temperature and pressure; overspeed; and jacket water temperature; all accessible through
ESM. ESM continually monitors combustion performance through accelerometers to provide detonation Engine shown with options.
protection. Dual magnetic pick-ups are used for accurate engine speed monitoring. ESM provides predictive
spark plug diagnostics as well as advanced diagnostics of engine and all ESM sensors and logs any faults into
non-volatile flash memory.
ENGINE ROTATION - Counterclockwise when facing flywheel.
EXHAUST OUTLET - Single vertical at rear. Flexible stainless steel connection with 8" (203 mm) pipe flange.
FLYWHEEL - Approx. WR2 = 155000 lb-in2; with ring gear (208 teeth), machined to accept two drive adapters:
31.88" (810 mm) pilot bore, 30.25" (768 mm) bolt circle, (12) 0.75" - 10 tapped holes; or 28.88" (734 mm) pilot
bore, 27.25" (692 mm) bolt circle, (12) 0.625"-11 tapped holes and (12) 0.75"-10 tapped holes. Model L7044GSI with ESM®
FLYWHEEL HOUSING - No. 00 SAE. Turbocharged and Intercooled, Twelve Cylinder,
FUEL SYSTEM - Two natural gas, 4" (102 mm) updraft carburetors and two mounted Mooney Flowgrid 250, 2" Four-Cycle Gas Engine
(51 mm) gas regulators, 24 psi (165 kPa) fuel inlet pressure required. 10 foot (3 m) harness provided for ESM
control of customer supplied fuel shutoff valve.
GOVERNOR - Electric throttle actuator controlled by ESM with throttle position feedback. Governor tuning is
performed using ESP. ESM includes option of a load-coming feature to improve engine response to step loads.
IGNITION SYSTEM - Ignition Power Module (IPM) controlled by ESM, with spark timing optimized for any speed-
SPECIFICATIONS
load condition. Dual voltage energy levels automatically controlled by ESM to maximize spark plug life.
Shielded ignition components that meet Canadian Standard Association Class 1, Division 2, Group D hazardous
location requirements.
Cylinders Lube Oil Capacity
INTERCOOLER - Air-to-water. V 12 90 gal.
LEVELING BOLTS Piston Displacement (340 L)
LIFTING EYES - Requires 9.5 ton Working Load Limit (W.L.L.) anchor shackles. 7040 cu. in. Starting System
LUBRICATION - Full pressure, gear type pump. Full flow lube oil filter, 36 gallon (136 litres) capacity, with (115 L) 125 - 150 psi air/gas
replaceable depth-type elements and flexible connections, shipped loose. MICROSPIN® bypass filter, engine
mounted. Lube oil strainer, mounted. Air/gas motor driven prelube pump, requires final piping. Bore & Stroke 24 V electric
MANIFOLDS - Exhaust, (2) water cooled. 9.375″ x 8.5″ Dry Weight
OIL COOLER - Shell and tube type, with thermostatic temperature controller and pressure regulating valve. (238 x 216 mm) 21,000 lb.
Factory mounted.
Compression Ratio (9,525 kg)
OIL PAN - Base type. 90 gallon (340 L) capacity, including filter and cooler.
PAINT - Oilfield orange primer. 8:1
PISTONS - Aluminum with floating pin. Oil cooled. 8:1 compression ratio. Jacket Water
SHIPPING SKID - Steel for domestic truck or rail. System Capacity
TURBOCHARGERS - (2) with water-cooled bearing housing and adjustable wastegates. 107 gal.
VIBRATION DAMPER - Viscous type.
(405 L)
WATER CIRCULATING SYSTEM, AUXILIARY CIRCUIT - Belt driven water circulating pump for intercooler and
lube oil cooler.
WATER CIRCULATING SYSTEM, ENGINE JACKET - Belt driven water circulating pump. Cluster type
thermostatic temperature regulating valve, full flow bypass type with 165° - 170° F (74° - 77° C) start to open
thermostats. Flange connections and mating flanges for (2) 4" (102 mm) inlets and (1) 5" (127 mm) outlet.
POWER RATINGS: L7044GSI VHP™ SERIES FOUR® GAS ENGINE
Brake Horsepower (kWb Output)
I.C. Water Inlet Temp.
Model °F (°C) (Tcra) C.R. 800 rpm 900 rpm 1000 rpm 1200 rpm
L7044GSI 130° (54°) 8:1 1120 (835) 1260 (940) 1400 (1044) 1680 (1253)
Rating Standard: All models: Ratings are based on ISO 3046/1-1995 with mechanical efficiency of 90% and auxiliary water temperature Tcra (clause 10.1) as specified
above limited to ± 10° F (± 5° C). Ratings are also valid for SAE J1349, BS5514, DIN6271 and AP17B-11C standard atmospheric conditions.
ISO Standard Power/Continuous Power Rating: The highest load and speed which can be applied 24 hours a day, seven days a week, 365 days per year except
for normal maintenance. It is permissible to operate the engine at up to 10% overload, or maximum load indicated by the intermittent rating, whichever is lower, for
two hours in each 24 hour period.
All natural gas engine ratings are based on a fuel of 900 Btu/ft3 (35.3 MJ/nm3) SLHV value, with a 91 Waukesha Knock Index®.
For conditions or fuels other than standard, contact the Waukesha Engine Sales Engineering Department.
PERFORMANCE: L7044GSI VHP™ SERIES FOUR® GAS ENGINE
English 130° F I.C. Water Temperature Metric 54° C I.C. Water Temperature
RPM 1200 1000 RPM 1200 1000
Power (Bhp) 1680 1400 Power (kWb) 1253 1044
BSFC (Btu/bhp-hr) 7755 7575 BSFC (kJ/kW-hr) 10970 10715
Pre-Catalyst
Pre-Catalyst
Settings
Settings
NOx (grams/bhp-hr) 13.3 12.9 NOx (g/nm3) 4.9 4.8
CO (grams/bhp-hr) 11.2 9.4 CO (g/nm3) 4.2 3.5
NMHC (grams/bhp-hr) 0.21 0.21 NMHC (g/nm ) 3
0.08 0.08
NOTES:
1) Fuel consumption and exhaust emissions are based on ISO 3046/1-1995 standard reference conditions and commercial quality natural gas of 900 Btu/ft3
(35.38 MJ/m3 [25, V(0; 101.325)]) saturated lower heat value, Waukesha Knock Index® of 91 and 93% methane content by volume.
ISO 3046/1-1995 standard reference conditions are 77°F (25°C) ambient temperature, 29.54 inches Hg (100 kPa) barometric pressure, 30% relative humidity
(1kPa/0.3 inches Hg water vapor pressure).
2) S.I. exhaust emissions are corrected to 5% O2 (0°C and 101.325 kPa).
3) Data will vary due to variations in site conditions. For conditions and/or fuels other than standard, consult the Waukesha Engine Sales Engineering Department.
4) Fuel consumption bassed on ISO 3046/1-1995 with a +5% tolerance for commercial quality natural gas having a 900 Btu/ft3 saturated low heat valve
83.33″ 142.75″
(2117mm) (3626mm)
93.73″
(2381mm)
WAUKESHA ENGINE EUROPEAN REGIONAL OFFICE Consult your local Waukesha Distributor for system
DRESSER, INC. Nugat 7/13 application assistance. The manufacturer reserves the
1101 West St. Paul Avenue 02-776 Warsaw, Poland right to change or modify without notice, the design or
equipment specifications as herein set forth without
Waukesha, WI 53188-4999 Tomasz Staszek, Regional Manager
incurring any obligation either with respect to
Phone: (262) 547-3311 Fax: (262) 549-2795 Phone/Fax: +48 22 409 13 70 equipment previously sold or in the process of
waukeshaengine.dresser.com Mobile: +48 605 310 757 construction except where otherwise specifically
Bulletin 7045 0905 Email: tomasz.staszek@waukeshaengine.dresser.com guaranteed by the manufacturer.
Waukesha, VHP, Series Four, Microspin, ESM, and Waukesha Knock Index are trademarks/registered trademarks of Waukesha Engine, Dresser, Inc. Copyright 2005 Dresser, Inc.
