Features and technology / Features in general


GE’s Waukesha gas engines concept


Lean-burn & Rich-burn – two proven concepts to meet the O&G segment demand


GE’s Waukesha gas engines are designed to perform reliably in isolated, mission-critical and demanding applications. Featuring durable design and unsurpassed flexibility, our rich-burn and lean- burn alternatives cover a wide variety of applications and varying emissions compliance levels. By offering both rich-burn and lean- burn designs, GE’s Waukesha team provides a range of products to help our customers make smart choice for tomorrow.


Helping you plan ahead There are multiple considerations to take into account when deciding which type of engine right suits your needs. By outlining some of these key considerations, we hope you’ll gain insight and perspective to make the best decision for your current situation while being mindful of the future.


Three critical considerations • Emissions regulations • Reliability – Island mode and high transient response • Fuel flexibility


Emissions Increasingly stringent emissions standards play a more prominent role in purchasing strategies for new engines:


As new rounds of emissions regulations go into effect, the Environmental Protection Agency’s (EPA) new emissions standards for nitrogen oxides (NOx), carbon monoxide (CO), volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) have challenged the natural gas industry to reduce levels of these substances during operation. New greenhouse gas (GHG) regulations could be implemented as soon as 2011 and ozone regulations are possible by 2012, which would call for further reductions in allowable emissions.


New EPA regulations implemented in 2010 • NOx limit 1.0 g/BHP-hr • CO limit 2.0 g/BHP-hr • VOC limit 0.7 g/BHP-hr


State requirements may exceed federal regulations Although federal regulations reduced allowable NOx and cut CO emissions by half in 2010, some states will enact even more stringent requirements. For example, states that currently have severe non-attainment have begun mandating NOx levels of 0.5 g/BHP-hr or lower. Companies with large fleets are particularly impacted, where mobility is critical, as is application flexibility. When you’re talking larger horsepower applications, lean-burn engines offer good power density. Fuel efficiency has traditionally been an advantage for lean-burn engines.


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