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Ajax Integral Engine-Compressors

NEW HYDROGEN TEST ALERT

COOPER ANNOUNCES MAJOR METHANE BREAKTHROUGH

Cooper has successfully tested a slow-speed integral engine running on a hydrogen (H2)-natural gas fuel blend. The groundbreaking test comes 5 months after the announcement of Cooper’s joint hydrogen research project with a major U.S. gas pipeline company to demonstrate the safe operating range of H2 blends in large-bore internal combustion engines.

“Cooper’s hydrogen development initiative took another large step forward today. We ran an unmodified large-bore, slow-speed integral engine-compressor with an H2 blend of 5% by volume, and we achieved significant reductions of methane in the exhaust. This is the first such run using significant amounts of hydrogen in an engine of this design.” said Cooper CEO, John Sargent. “In May, we will be running up to 33% by volume in the same stock engine. Our customers have thousands of similar units running globally, so the potential reduction of methane is substantial.”

The Cooper test was conducted at their slow-speed integral engine test cell at corporate headquarters located in Houston, Texas. The test engine is the current production, NSPS compliant CleanBurn PlusTM AJAX® 2802 with 15″ piston bore, 16″ power stroke, and a speed range of 360-440 RPM. Cooper selected the AJAX engine due to the similarities of its combustion system to that of the large fleet of the other engine brands the company services (Clark, Cooper-Bessemer®, Ingersoll Rand, and Worthington).

CleanBurn Plus AJAX 2800 Integral Engine
Cooper's engineering team and CEO, John Sargent,
in the control room during the hydrogen test.
OVERVIEW

AJAX Engines, the Clear Choice for Your Compression Needs.

Robust, reliable AJAX engines have been manufactured in the United States longer than any other brand of compression engines. Continuous innovations and technologies add compliance, strength, and simplicity to the original design. AJAX integrals with ratings of 148 – 845 bhp (110 – 650 kWb) feature a slow-speed, two-cycle engine design that results in less wear and fewer moving parts and offers greater reliability and efficiency than high-speed separable units. As a result, operating costs are substantially lower over the life of your equipment. The AJAX integral engine-compressors are the economic choice for a variety of applications, including gas gathering, injection, processing, transmission, and fuel gas boosting.

50 years of reliable, efficient, long-lasting service

The Ajax Competitive Advantage

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. The AJAX product line, from 147 to 845 horsepower (110 to 630 kW), and a cylinder line-up capable of handling a wide range of pressures, from vacuum to 5,500 psi (379 bar), offers up to six ratios of capability and the lowest brake horsepower per million flows for a wider range of applications, including sour gas. Thanks to its unique two-stroke design, the AJAX integral engine-compressor virtually eliminates problems typically caused by the presence of sour gas, handling H2S content up to 3.0 mol%.

Ajax Applications

AJAX integral engine-compressors are available from 147 to 845 hp (110 to 630 kW) and are ideally suited for:

Frame Ratings

Integral Engine-Compressor

 DPC-2201DPC-2202DPC-2801DPC-2802DPC-2803DPC-2804
ModelSTDLESTDLESTDLESTDLESTDLESTDLE
Powera bhp
(kWb)
148
110
148
110
296
221
296
221
192
143
192
143
422
315
384
286
634
473
600
447
845
630
800
597
BSFC Btu/bhp-hr8,0007,8008,0007,8008,2007,8008,2007,8008,0007,8008,0007,800
NOx g/bhp-hr10.00.5-2.0b10.00.5-2.0b12.00.5-2.0b12.00.5-2.0b12.00.5-2.0b12.00.5-2.0b
Maximum Speed rpm440440440440440440
Minimum Speed rpm300300300300300300
Number of Power Cylinders121234
Number of Compression Throws 121223
Rod Load lbs/kN 30,000 / 13333,000 / 14730,000 / 14733,000 / 14740,000 / 17840,000 / 178
Rod Diameter in/mm2.5 / 63.52.5 / 63.52.5 / 63.52.5 / 63.52.5 / 63.52.5 / 63.5
Stroke in/mm11 / 27911 / 27911 / 27911 / 27911 / 27911 / 279

Notes:
a Rating @100°F ambient and 1,500ft FASL
b Rated for 2.0 g/bhp-hr NOx but can achieve 0.5 g/bhp-hr NOx
c Rated for 0.5 g/bhp-hr NOx

Separable Compressor

C-302
Number of throws2
Frame power (hp)
(kW)
300
223
Stroke (in/mm)11 / 279
Max RPM455
Gas rod load lbf/kN
Tension30,000 / 133
Compression 30,000 / 133
Main bearing diameter (in/mm)7 / 178
Piston rod diameter (in/mm)2.5 / 63.5
Crankshaft materialForged Steel
Connecting rod materialForged Steel
Frame weight (lbs)
(kg)
18,000
8,165
NEW HYDROGEN TEST ALERT

COOPER EXPANDS USE OF HYDROGEN FUEL IN AN INTEGRAL ENGINE, TOPPING 30% BY VOLUME

In March 2022, Cooper Machinery Services (Cooper) successfully tested a slow-speed integral engine running on a hydrogen (H2) fuel blend (95% natural gas and 5% hydrogen by volume). This month, Cooper greatly exceeded industry expectations by successfully testing the same engine with a fuel blend of 30% H2 by volume, achieving significant reductions in CO, CO2, THC, and methane emissions.

CleanBurn Plus™ two-stroke AJAX® 2802

Cooper Awarded Enterprise R-3 Engine-Generator Project by the United States Space Force

Houston, TX, September 12, 2022 –(PR.com)– Cooper Machinery Services (Cooper), LLC, a portfolio company of Arcline Investment Management, has been awarded a contract by the United States Space Force (U.S.S.F.) to overhaul two of the six backup Enterprise R3 engine-generator sets stationed inside the Cheyenne Mountain Space Force Station in Colorado.