qsk78 g-drive engine

Diesel QSK78-Series

Frequency (Hz) 60, 50
Fuel Type Diesel
Rated for kW kVA
Standby 2400-2500 3000-3125
Prime 2200-2335 2750-2920


Rental (G-Drive) Prime (G-Drive) Movie Site Intermodal Rail (G-Drive) Crushing / Mining Dynamic / Rotary UPS Oil and Gas (G-Drive) Standby (G-Drive)


QSK78 G-Drive engine provides the optimal combination of productivity and performance. Its 4060-horsepower (3028 kWm) V18 configuration incorporates the best features of our QSK Series engines, including advanced combustion technology and robust base engine components.

Featuring a high pressure (HPI-PT) full authority fuel system, the engine meets Tier 2 and 2gTA Luft emissions and has exceptional fuel efficiency. The CM2250 ECM provides the Power Generation Interface (PGI), the widely accepted SAE J1939 industry standard CAN based communication network and advanced engine protection, ensuring faster connectivity along with a superior fault-finding capability. 

Plus, the QSK78 comes with optional features like ELIMINATOR™, CENTINEL™, and Prelub™, which help to significantly reduce downtime for routine maintenance.  

Every QSK78 engine is covered by Cummins base warranty, one of the most comprehensive and simplest plans in the industry.

Generator Model Hz Prime kVA / kW Standby kVA / kW RPM Fuel Type Certification Title
QSK78-G8 60 2920 / 2335 3125 / 2500 1800 Diesel Non-Regulated Diesel QSK78-Series
QSK78-G9 50 2750 / 2200 3000 / 2400 1500 Diesel Non-Regulated Diesel QSK78-Series
QSK78-G15 50 2750 / 2200 3000 / 2400 1500 Diesel EPA Tier 2 Diesel QSK78-Series

CTT (Cummins Turbo Technologies) HX82/HX83 turbo-charging – Utilizes exhaust energy with greater efficiency for improved emissions and fuel consumption.

Ferrous Cast Ductile Iron (FCD) Pistons – The design and material used in these types of pistons ensure increased engine efficiency and durability. Reduces ‘piston slap’ and increases power efficiency.

High Pressure Injection Fuel System – Provides a high-peak injection pressure for optimum combustion for low emissions and better fuel economy.  HPI fuel injection provides a “soft” injection start for lower combustion noise.

Low Temperature After-cooling – Enabled by a Two-Pump Two-Loop (2P2L) cooling system that utilizes 2 separate cooling circuit that allows for longer engine durability and fuel economy.  

G-Drive Integrated Design – Each component has been specifically developed and rigorously tested for G-Drive products, ensuring high performance, durability and reliability.

Service and Support – G-Drive products are backed by an uncompromising level of technical support and after sales service, delivered through a world class service network.

To protect public health and conserve our planet's natural resources, legislation from the U.S. Environmental Protection Agency (EPA) and regulatory agencies in the European Union (EU) has, for the past decade, required that pollutants produced by diesel engines - such as nitrogen oxides (NOx), hydrocarbons (HC) and particulate matter (PM) - be reduced.

Throughout this time, Cummins Inc. has been at the forefront of the move to meet these new standards, becoming:

  • the first manufacturer to introduce EPA Tier-4F and Tier-3 products to the market - ahead of the regulatory deadline;
  • the first manufacturer to introduce EU Stage Stage V compliant generator-drive diesel engines to European market;
  • the leader in innovative emissions solutions that focus predominantly on in-cylinder design improvements to eliminate most of the NOx, HC and PM before they are formed.

As a result, our diesel engines are not only very clean, but also retain all of their performance advantages without exhaust after treatment strategies that add cost and complicate maintenance for end users.

Cummins Power Generation provides the best warranty and extended warranty plan in the industry. You can expect Cummins Power Generation and its authorized warranty locations to:

  • Stand behind Cummins Power Generation products.
  • Repair all failures that are a result of defects in materials or factory workmanship by Cummins Power Generation, or arrange for OEM warranty service if component is from another manufacturer.
  • Provide the benefit of the coverage immediately.
  • Treat all customers fairly and consistently.

For specific information regarding your warranty, or for more information regarding our warranties contact your nearest distributor.

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