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High Efficiency Industrial Gas Engines Working Smarter...
Compared to previous series, like the Waukesha VHP Series Four, the VHP Series Five (S5) gas engines are capable of higher power levels without increasing component stress. This is made possible by enhanced rich-burn combustion through the Miller cycle. The Miller cycle is a thermodynamic enhanced cylinder head design with an enhanced piston design. The advantage of the Miller cycle is to reduce temperatures in key regions.
Also used on GE’s Waukesha P9394GSI engine, the Miller cycle moves work from the piston to the turbocharger, which yields the benefit of reducing combustion and exhaust temperatures and making the L7044GSI S5 the most fuel efficient VHP engine ever.
The modified cylinder head design improves reliability and extends the life of the head by reducing key internal temperatures by up to 40%. The Waukesha VHP Series Five piston design has been enhanced to reduce unburned hydrocarbons, lowering both emissions and fuel consumption. The piston temperature is also reduced, improving fuel flexibility even at a higher rating.
Improvements to the ignition system allow for 4,000-hour spark plug intervals with low-cost, non-precious metal plugs. Matching 4,000-hour oil change intervals can reduce operating costs and trips to the site.
Because the 1500 hp L702GSI S5 is built with the same components as the 1900 hp L7044GSI S5, engine stress is reduced, reliability improved, and intervals extended, making the L7044GSI S5 the most flexible VHP engine ever.
The L7044GSI S5 does not have a fuel derate, so it can achieve the full 1500 hp rating on fuels up to 2350 Btu/ft3 LHV with ambient temperatures up to 120°F. Fuel consumption usually is reduced by more than 10%, while lifecycle costs are typically 20% lower than previous models. With the Waukesha L7044GSI S5 gas engine, you can be confident that the engine can provide a full 1,500 hp rating and meet emissions at nearly every site when paired with a three-way catalyst.
VHP Series Five engines come standard with ESM*2, GE’s next-generation engine controller. With its 12-inch full color customer interface panel, the L7044GSI ESM2 allows you to see all engine parameters and trend data, view manuals, and walk through troubleshooting steps—all without the need for a laptop computer.
GE’s emPact emission control system is the option of choice for reducing emissions below 0.15 g/bhp-hr of NOx and 0.30 g/bhp-hr of CO. emPact optimizes the interactions among the Series 5 engine, AFR2 air/fuel ratio control, and the GE-supplied three-way (NSCR) catalyst to maintain emissions compliance even as engine speed, load, fuel, and environmental conditions change.
*Indicates a trademark of the General Electric Company