Discover the defining engine
Advanced natural gas technology, proven in the field.
HSK78G for well-servicing
For too long, operators have had to choose between the proven performance of diesel and the benefits of natural gas. The HSK78G changes that. Combining the latest advancements in natural gas technology with the robust and responsive performance operators know, the transition to new fuel feels like a seamless progression - not a compromise.
Experience the benefits
Lower complexity, more capability
Compact, lightweight and engineered for seamless integration, the HSK78G is built to match existing platform designs. Its unique size, field-ready functionality and fully-flexible system alignment allows fleets to operate the way they always have. With simplified maintenance, reduced part count and durable components, operators can still depend on the reliability and serviceability they need to reduce their engine’s lifecycle operating costs.
New fuel, familiar feeling
Delivering diesel-like transient performance, the HSK78G's variable-speed capability is engineered to provide the power delivery operators recognize and trust to perform in demanding conditions.
Engineered to adapt
Moving fleets must continuously adjust to changing conditions, with smarter power, you increase uptime. The HSK78G’s advanced engine controls automatically adapt to changes in fuel composition and operating environments, delivering optimized, reliable performance without the need for manual tuning.
The natural gas advantage
Advanced lean-burn natural gas technology enables operators to lower overall fleet emissions, while maintaining the diesel-like performance they expect, with Spark-ignited EPA Mobile Off-Highway compliance.
Tried and tested perfomance
Total operation hours.
ft-lb peak torque output achieved.
Read more about the HSK78G’s journey.
Cummins Inc. (NYSE: CMI) continues to advance natural gas technology for hydraulic fracturing applications as the HSK78G engine demonstrates its proven capability in the field.
Cummins Inc. (NYSE: CMI) and Liberty Energy Inc.
Cummins Inc. (NYSE: CMI) has begun full unit production of the HSK78G natural gas engine for deployment in hydraulic fracturing applications following certification approval for EPA Tier 2 Large Spark-Ignition Mobile Off-Highway (MOH).
