GAS ENGINES
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Engine Families
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From design. To engineering. To manufacturing. To service. Waukesha’s engines represent a corporate commitment to give you a world class engine that will perform to your total satisfaction. Call 1-800-969-6121
The APG family of engines is the newest range of engines, developed specifically for power generation applications demanding high efficiency, low emissions, and lower operating costs. The APG1000 has been developed in cooperation with the U.S. Department of Energy (DOE) as part of the DOE's Advanced Reciprocating Engine Systems (ARES) program.
The ATGL series engine is Waukesha’s largest engine in terms of size and horsepower. The ATGL family combines rugged strength with the sophisticated detail only possible through modern engineering. The result is a workhorse remarkable for both its durability and efficiency.
The VHP family of engines is the backbone of Waukesha’s product offering. The VHP family has undergone continual improvements responding to customer needs. We always retain the reliability and efficiency that made it our most popular engine family ever.
The VGF / VSG series of compact high-speed engines is the answer to contemporary demands for more power in less space.
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APG Series [ TOP ]
The APG1000 is a 16-cylinder, turbocharged, intercooled, lean combustion power generation unit that features ultra-low NOx capability and patented ignition system and combustion chamber concepts. It is rated at 1000 kW at 50 Hz and 1100 kW at 60 Hz - 500 and 1800 rpm, respectively. It is one of the most efficient 1 MW units available at 1800 rpm, 42 % BTE (brake thermal efficiency) and is among the lowest in lean burn emissions (1 g/bhp-hr NOx). At 42 % BTE, the APG1000 is six percentage points better than the previous generation of the engine from which the APG1000 is derived.
One of the keys to developing a higher efficiency gas engine is increasing power density. The APG1000 delivers 40 percent higher power output than the previous generation of engines built on a similar platform.
Waukesha's successful ESM® engine control and diagnostics system is standard on the APG1000. The ESM system integrates air-fuel ratio control, spark timing control, speed governing, knock detection, start/stop control, diagnostic tools, fault logging, engine safeties, an engine service program and ignition power module diagnostics.
ATGL Series [ TOP ]
The Waukesha ATGL offers value and performance, low operating costs, and reliability that will set a new standard in how you evaluate large engine drives.
For all its advanced design and technology, the ATGL is a natural progression in Waukesha's stationary gas engine evolution. After nearly a century of building what many consider to be the most reliable gas engines in the world, Waukesha developed the next generation of high performance gas engines.
- Cooling passages direct water precisely where needed for component cooling and thermal stability. Yet, mechanical strength is not sacrificed due to the location and size of these passages. The passages are drilled, rather than cast, to ensure consistent size and location.
- All surfaces of the connecting rod are machined. This process removes stress risers caused by the forging process and controls the weight of the component. Not only is the rod structurally sound, but variation of the rotating masses is minimized.
- Bore cooling passages direct water to each valve seat to reduce operating temperatures. Reducing temperatures and maintaining thermal stability increases component life. ATGL top-end overhauls of up to 30,000 hours have been achieved.
- Turbochargers have a water cooled center section to improve bearing cooling for maximum operating life.
- Oil is pressure fed through cooling coils cast into the crown at the piston to continuously draw heat away from the piston crown and rings. Both piston and ring temperatures are reduced for better life. The two top combustion rings are housed in a Ni-Resist insert for a stable ring pack during combustion. This maintains even wear patterns through the life cycle.
- Cylinder liners are bath nitrated grey iron. The hard running surface is instrumental in contributing to the long life cycles of the ATGL.
- The main bearing caps are retained with vertical studs and lateral tie bolts. These features assure structural rigidity and establish a rigid frame for proper support and alignment of the crankshaft.
- Steel tube lube oil passages are used exclusively throughout the ATGL ensuring the integrity of oil flow to all components.
VHP Series [ TOP ]
Based on decades of experience, the VHP family was introduced in 1966, and quickly assumed the role of industry workhorse in heavy-duty service up to 1000 brake horsepower. By the mid-1970s, the VHP became the standard for the petroleum industry, and for prime, municipal and standby electric power applications. The VHP has evolved over time as our customer requirements changed. The VHP line is designed to accommodate 900 to 1500 rpm continuous operating speeds, without sacrificing the engine’s reputation for exceptional reliability.
- Main bearing journals are align-bored to ensure proper alignment with the crankshaft. This reduces stress distortion, and increases bearing life.
- Cross bolting of the main bearing caps to the crankcase provides a rigid frame for support and alignment of the crankshaft.
- T-style, cross drilled lubrication passages provide full 360 degree lubrication to the connecting rod. The improved cooling and a thicker, stronger design help increase component life. Large radius fillets minimize crankshaft stress between the journals and crank throws.
- Steel backed bearings with an alloy overlay combine high load bearing capability with excellent corrosion resistance for long life. Ungrooved lower main bearings and continuous 360 degree coiling from the T-drilled crankshaft provide a 40% increase in load carrying capacity.
- Cylinder liners are made of heat treated bainite cast iron, with greater strength for less flexing and longer wear. New three-ring piston offers better expansion characteristics at the crown and greater strength in the pin boss.
- Longer thread engagement on the VHP GL spark plug carrier, combined with a new precious metal spark plug, results in lower spark plug temperatures and longer spark plug life. Available in standard and CSA configuration.
- Valve train redesign results in improved lubrication and cooling of valves. New valve adjusting screws are trouble free. Alloy valves and valve seats withstand severe demands of lean combustion engines for long periods between top-end overhauls.
- VHP engines will operate on the gaseous fuel of your choice: natural gas, digester gas, landfill gas and propane. They are available in single or dual fuel carburetion systems.
VGF Series [ TOP ]
The VGF engine is purposely designed from the ground up for stationary, spark ignited, gaseous fuel applications. The VGF is not limited to weight-sensitive mobile equipment requirements. Its high weight-to-power ratio provides a solid foundation for years of consistent and dependable operation. For the size and price of other high speed engines, the VGF provides full power around the clock, with substantially reduced maintenance and operating costs. You get more engine, more reliability, more performance, more uptime, and more value-at less cost.
- The GL (Lean Burn) fuel system and high turbulence combustion chamber provide excellent fuel efficiency and optimum combustion stability.
- VGF’s optimum BMEP results in better service life for key components and maintenance intervals.
- The patented high turbulence combustion chamber allows ability to burn lean air fuel mixtures with an open combustion chamber. This produces low emissions across engine load and speed range. It also provides lower fuel consumption, which is typically 91% of life cycle costs.
- The low fuel pressure GLD model has draw-thru carburetion capability which increases application potential.
- Individual, four valve, water cooled cylinder heads ensure optimum performance and reliability. Cooler cylinder head operation results in longer valve train component life and lower maintenance cost.
- The VGF is adaptable to natural gas and propane as well as digester gas and even landfill gas.
- Standard Custom Engine Control® (CEC) Ignition Module provides precise timing and control for reduced emissions and fuel costs.
- VGF’s tremendous torque allows rpms to be turned down to reduce fuel consumption and still maintain constant torque capability.
- High temperature cooling capability increases heat recovery opportunities, making the VGF a better fit for chiller or cogeneration applications.
- Virtually all wearing components of the VGF series are interchangeable across the VGF engine series.
- A fully counterweighted crankshaft helps prevent engine vibration for a smoother running package.
- Flanged connection points make installation and alignment easy.
- The VGF engine series allows complete in-place maintenance and in-frame overhaul.
VSG Series [ TOP ]
Since its introduction in fall 1986, Waukesha’s VSG series gas engine has made significant inroads in power generation and mechanical drive applications, including natural-gas compression, pumping and irrigation. As standard equipment, the VSG model for gas-compressor drive includes:
- Engine mounted, dry-element, two-stage air cleaner with rain cap and service indicator.
- Woodward SG, hydromechanical governor.
- Murphy low-oil pressure, high-water temperature Swichgage instrumentation and ignition switch safety shutdown.
- Cast iron, water-cooled exhaust manifold with outlet flange for 76 mm (ANSI 3 in.) nominal pipe.
- Single IMPCO 200D natural-gas carburetor with Fisher S-301 pressure regulator.
- Fairbanks Morse 3000 or Altronic V non-shielded ignition system with spark plugs.
- Full pressure lubrication system, with high capacity gear type pump, adjustable relief valve, mounted centrifugal oil filter, and oil pan of cast alloy aluminum with deep front sump.
- Shell and tube lube oil cooler fitted to engine
- Thermostatically controlled, belt driven centrifugal water pump.
Options are available in instrumentation such as oil temperature gauge, electric tachometer, ammeter, pyrometer gauge, electric tachometer/hourmeter and intake manifold pressure/vacuum gauge. Air/gas driven or electric starting motors can be specified. The power take-off can be stub shaft or clutch PTO.
