One Megawatt Mark For Liebherr Gas Engines

New 20-cylinder gas engine for plug-and-play power generation and cogeneration applications

With 48.7 L displacement, the new Liebherr G9620 gas engine is reported to reach 44% of mechanical efficiency and a power output of over 1 MW.


Liebherr Components—a division of the Liebherr Group—is launching a new 20-cylinder gaseous fueled engine, that follows the already announced company’s strategy for the delivery of fully equipped gas engines

The Liebherr G9620 gas engine features a displacement of 48.7 L, with 44% mechanical efficiency and the power output of over 1 MW, Liebherr said.

“The new gas engine by Liebherr will be available in two basic versions—a ‘high efficiency’ and ‘high response’ version,” said Martial Suchet, head of Sales Gas Engines at Liebherr. “With them, Liebherr will cover the most applications on a wide spectrum of different gases, for example gases with different energy values as well as gases with different methane numbers. Applications both in net parallel work and island mode, as well as in 50 or 60 Hz applications are further planned for development.

“This flexibility is possible thanks to only a few adjustments and some geometric aspects, but mainly thanks to our on-board electronics,” Suchet said. “The electronic control units are steering all essential engine functions, such as knocking control, ignition control, power control, lambda control, safety controls”.

The company said the G9620 gas engine will include integrated air filters, on-engine Liebherr ECUs with calibrated datasets and a new water-cooling concept.

Like its predecessors, the new engine was designed for a ‘plug and play’ approach. The number of connections, including water circuits and the electrical or electronic connections, are limited. Combined with integrated filters, this greatly reduces the amount of time and efforts OEMs would have to spend integrating it into cogeneration units, and will guarantee them the matching subcomponents, Liebherr said.

On developing the product, Liebherr said it put special focus on an optimized lifecycle and operation costs to create the highest costumer advantage.

“The stationary gas engines market is changing and requires flexible engines to meet the demands of diverse applications. Therefore, we are focusing on energetic overall efficiency of heat power coupling installations, emissions regulations and flexibility in application as essential points in our further developments,” said Suchet.

At its launch, the G9620 engine will comply with the TA Luft German emissions standard (with raw NOX emissions of 500 mg/Nm3@5%O2). It will be first presented at the EnergyDecentral trade show in Hannover, Germany, Nov. 15-18.

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