CG137-8 Gas Compression Engine

Exterior View

Minimum Rating	400 bhp
Maximum Rating	400 bhp
Emissions	NSPS Site Compliant Capable
Displacement	1,099 in3
Compression Ratio	10.25:1
Aspiration	Turbocharged-Aftercooled

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Engine Specifications

Minimum Rating	400 bhp
Maximum Rating	400 bhp
Emissions	NSPS Site Compliant Capable
Displacement	1,099 in3
Compression Ratio	10.25:1
Aspiration	Turbocharged-Aftercooled
Rotation (from flywheel end)	Counterclockwise
Flywheel and Flywheel Housing	SAE No. 0
Flywheel Teeth	136
Oil Change Interval	750 hours
Stroke	6 in
Bore	5 in
Weight - Dry	4,850 lb
Ignition, Protection	Electronic ADEM A4
Air/Fuel Ratio Control	Electronic ADEM A4
Minimum Rating	400 BHP
Maximum Rating	400 BHP
Emissions	Rich Burn: EPA NSPS Site Compliant Capable with Caterpillar Supplied AFRC and Customer Supplied Aftertreatment
Displacement	1,099 in³
Compression Ratio	10.25:1
Aspiration	Turbocharged - Aftercooled
Rotation from Flywheel End	Counterclockwise
Flywheel and Flywheel Housing	SAE No. 0
Flywheel Teeth	136
Oil Change Interval	750 hours
Stroke	6 in
Bore	5 in
Length	64 in
Width	57 in
Height	69 in
Rated Speed	1,800 rpm

Capacity for Liquids

Cooling System	15 gal
Lube Oil System (refill)	39 gal
Cooling System	15 gal (US)
Lube Oil System - Refill	39 gal (US)

Engine Design

- Tough and durable, with field-proven head design - When configured with customer-supplied air fuel ratio control and three-way catalyst, the engine is capable of meeting NSPS and non-attainment area emissions levels. - Integrated operator interface panel reduces hands-on time with the engine - Operator interface panel allows setup and servicing without a laptop - Runs on a broad range of fuels and speeds at any emissions level - Factory-installed components with single connection point eases packaging

Advanced Digital Engine Management

The ADEM A4 system represents the next generation of engine management systems while reducing the number of mechanical components and easing troubleshooting. Features include: • Electronic ignition • Electronic governing/speed control • Start/stop logic • Engine protection and monitoring

Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time

Gas Engine Rating Pro (GERP)

GERP is a web-based program designed to provide site performance capabilities for Cat® natural gas engines for the gas compression industry. GERP provides engine data for your site's altitude, ambient temperature, fuel, engine coolant heat rejection, performance data, installation drawings, spec sheets, and pump curves.

Product Support Offered Through Global Cat Dealer

More than 2,200 dealer outlets Cat factory-trained dealer technicians service every aspect of your petroleum engine Caterpillar parts and labor warranty Preventive maintenance agreements available for repairbefore- failure options S•O•SSM program matches your oil and coolant samples against Caterpillar set standards to determine: - Internal engine component condition - Presence of unwanted fluids - Presence of combustion by-products - Site-specific oil change interval

Over 80 Years of Engine Manufacturing Experience

Over 60 years of natural gas engine production Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products. - Cast engine blocks, heads, cylinder liners, and flywheel housings - Machine critical components - Assemble complete engine

Web Site

For all your petroleum power requirements, visit cat.com/oilandgas

Air Inlet System
- Air cleaner — single element with service indicator
- Optional air inlet adapter and rain cap — recommended for weather protection
Control System
- ADEM A4
- Class 1, Division 2, Group C & D and Zone 2
Cooling System
- Jacket water thermostats and housing — full open temperature 98°C (208°F)
- Jacket water pump — gear driven, centrifugal, non-self-priming
- Aftercooler water pump — gear driven, centrifugal, non-self-priming
- Aftercooler core — for treated water and sea air atmosphere
Exhaust System
- Exhaust manifolds — watercooled
- Exhaust elbow — dry 203 mm (8 in)
Flywheels & Flywheel Housings
- Flywheel, SAE No. 14 or 18
- Flywheel housing, SAE No. 0
- SAE standard rotation
Fuel System
- Gas pressure regulator
- Natural gas carburetor
Lube System
- Crankcase breather — top mounted
- Oil cooler
- Oil filter — RH
- Oil filler in valve cover, dipstick — RH
Protection System
- ADEM A4 protection
- The following include alarm and shutdown:
- The following is display only
General
- Paint, Caterpillar yellow
- Crankshaft vibration damper and drive pulleys
- Lifting eyes
- Cylinder block inspection covers

Charging Alternator
- 24V, 60A CSA alternator
Exhaust System
- Exhaust flex fitting
- Exhaust elbow
- Exhaust flange — ANSI
Instrumentation
- Operator interface panel
- Operator interface panel enclosure
- 15', 20', 50' interconnect harness
Starting System
- Air pressure regulator
- Air start silencer
- Vane starter
- Electric starter
- Turbine starter
Fuel System
- Fuel filter
Air Inlet System
- Precleaner
- Rain cap