ajax-Integral Engine Compressor

Compression Systems

Gas Engine Compressors Exciting New Ajax Engineering Evolutions

TUNED EXHAUST EXPANSION CHAMBER Because ever-tightening environmental requirements pose such difficult, constant challenges, our goal is to help you comply without giving up performance. Our patented exhaust expansion chamber provides perfect proof. Its ingenious design allows you to recover up to 50% BHP derating, reduce NOx by 60%, or both, depending on your needs. Even better, there are no moving parts, no computers and no air-fuel ratio controllers, and no maintenance is required.

OXIDIZING CATALYTIC CONVERTER Many have tried, but only Ajax delivers a highly successful, field-proven catalytic converter to meet the new environmental guidelines for two-stroke low-emission gas engines. Designed to alleviate the potential worries of oil contamination and pressure spikes, this new product improvement virtually eliminates CO and VOC emissions and greatly reduces formaldehyde emissions. Add this to our patented expansion chamber, and it’s possible to achieve any combination of these benefits, including reduced NOx and/or increased site horsepower ratings.

ELECTRONIC GOVERNING SYSTEM Ajax engineering comes through in another big way with our Integrated Governor Throttle Body, now standard equipment. The IGTB provides excellent speed stability and quick response to load changes. The governor measures engine speed with a magnetic pickup and automatically adjusts fuel gas header pressure as required to maintain desired speed. The IGTB offers the features of simplicity without the requirement for on-site tuning.

FLEXIBLE FUEL HEADER This simple design just makes good sense and saves money. By providing easy access, our new flexible fuel header lets you maintain fuel valves, and even replace them, in a matter of minutes, rather than hours. As an added benefit, the system relieves much of the assembly stress from the gas injection valves.

LUBE SYSTEM For even better reliability, we’ve made a sophisticated divider block system standard issue for our power and compressor cylinders across the line. A solid-state flow monitor provides automatic low- and no-flow shutdown to prevent damage to the engine in the case of pump failure. With fewer moving parts, less tubing and only a few pumps required, the system is a model of userfriendly efficiency.

Ajax Integral Gas Engine - Compressors Standard Features

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1 Hydraulic Fuel Injection

For optimum fuel efficiency.

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6 Reliable Ignition

Solid-state, high-energy capacitor discharge ignition system.

2 Babbitt Sleeve and/or Double Row Tapered

Roller Bearings For maximum horsepower load and application requirements. 3 Power Cylinders

Two-cycle, low-BMEP, chrome-plated with fewer parts for less maintenance. Port-scavenged, requires neither inlet nor exhaust valves.

11 High Rod Load and Cylinder

Working Pressure Full-load operation through a variety of compression ratios up to 6:1 per stage.

7 Efficient Lubrication

Standard divider block, force-fed lubrication system for power and compression cylinders. 8 Crankshaft and Connecting Rods

12 Highly Efficient Compressor Cylinders

Large gas passages and valve flow areas for high efficiency. Bores range from 3 to 28 inches (7.62 to 71.1cm) diameter. Pressures to 5500 psig (379 BAR).

Closed-die forged in precision dies. 9 Frame

Ribbed, cast-iron construction for durability.

13 Low Valve Velocity

Longer life, high performance and high efficiency. High-differential poppet valves standard.

4 Crosshead Guides

Absorb thrust stresses and prevent contamination of crankcase lube oil. 5 Splash Lubrication System

No oil pump, filter or cooler required for main and connecting rod bearings. Sealed from combustion process.

10 Distant Piece

API-Type II extra-length design for ease of packing maintenance.

14 Clearance / Loading

Manual, wheelhand-type, variable volume clearance pocket with indicator allows cylinder unloading without de-pressurizing.

Compression Systems

Ajax Integral Versus High-speed Simplicity reigns supreme with Ajax integral technology. And improvements are made with one very critical parameter in mind — never compromise the strength and simplicity of the original design. That explains why our integral engine-compressors simply last longer, cost less to maintain and come standard with features that meet all the BACT emissions requirements. They also consistently maintain an impressive 98% or better availability. For a life cycle that can easily span 50 years or more, all that’s required of you is an annual oil change and very few special tools; as proof, our very first two DPC models, built in 1958, are still running strong.

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Ajax Integral

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High-Speed Separable

Common crankshaft – no coupling

Coupling required

Alignment not required

Critical alignment with close tolerances

Lowest mechanical losses

Higher mechanical losses

Matched design

Potential engine / compressor mismatch

Smooth-running balance – opposed design

Higher vibration

Total Cost of Ownership 5000 4500

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Time (Years) Comparison of a DPC-2802LE Vs. CAT 3408 - Ariel JGA HSSP to the following factors: 1) Initial cost

2) Annual maintenance cost and downtime Ajax

3) Natural gas price at $10 MMBtu

High-Speed Separable

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Total Cost (Thousands)

4000

The Ajax Competitive Advantage BETTER PRODUCTS. After nearly 50 years of reliable, efficient, long-lasting service, Ajax integral engine-compressors continue to earn their distinguished reputation for being as close to worry-free as any compressor product in the world. Our product line, from 147 to 845 horsepower (110-630 kw), and a cylinder line-up capable of handling a wide range of pressures, from vacuum to 5500 psi (379 BAR), offers

A J A X

A P P L I C A T I O N S

Ajax integral engine-compressors are available from 147 to 845 HP (110-630 kw) and are ideally suited for:

up to six ratios capability and the lowest BHP per million flows for a wider range of applications, including sour gas. Thanks to its unique

• Gas gathering

• Propane processing

two-stroke design, the Ajax integral engine-compressor virtually eliminates

• Gas transmission

• Helium processing

problems typically caused by the presence of sour gas, handling

• Storage

• Coal Bed Methane

H2S content up to 3.0 mol%.

• Gas re-injection

processing

• Gas processing

GREATER EXPERTISE. As an Ajax customer, you’re working with pros who are not only the best in the business, but sincerely devoted to your success. Our manufacturing team averages 17 years of experience and our Ajax technical support team, 20. Out of our facility in Oklahoma City, we offer a complete package designed to all of our customer specifications, including European directives. GUARANTEED QUALITY. The smart choice for gas compression service is Ajax, where top products and services are backed by one of the strongest war-

T W O - C Y C L E

S I M P L I C I T Y

Less is better when it comes to replacement and maintenance of engine parts. With an AJAX two-cycle engine, you don’t need:

ranty programs in the industry. • Cam, camshafts

PUT THE EDGE TO WORK FOR YOU. Top-quality OEM products. Expert advice.

and bearings

Proven experience. Superior technology. They’re all yours the minute you

• Valve stems and

choose to put Ajax on your team. If the idea of simplifying your operation and obtaining greater efficiency sounds good to you, give us a call and let us show you how to get the edge up on your competition.

valve stem bushings

Compression Stroke

• Valve covers and gaskets • Push rods • Tappets • Seats

Power Stroke

• Timing gears • Valve springs • Rocker arms • Intake and exhaust valves

Scavenging