Regency Logo

Regency Generators Knowledge Base

All About the Cummins QSX15-G4 Engine

What is the Cummins QSX15-G4 diesel engine?

The Cummins QSX15 series is a heavy duty diesel with 24 valve dual overhead camshaft technology leading it to have high reliability with a high power output. The QSX15-G4 is a 6 cylinder, turbocharged and air cooled engine which is currently manufactured in the USA.

The engine comes in either the 50 Hz or 60 Hz configuration and can be matched to meet a specific duty cycle and operating conditions of any generator set. The high pressure fuel injection system is capable of an injection pressure of 1900 bar, allowing for more fuel efficient combustion.

What is the power output of the Cummins QSX15-G4 diesel engine?

The total displacement of this engine is 15L, requires 91L of oil and 42L of coolant. The engine therefore produces 490 horsepower (366 kWm) at 1500 RPM or 555 horsepower (414 kWm) at 1800 RPM.

Need a diesel generator? Our UK made diesel generators include this Cummins diesel engine.

What power rating does the Cummins QSX15-G4 diesel engine run at?

The engine is available for use in diesel generators at Prime (PRP)Standby (ESP) and Continuous (COP) ratings making it a good all round unit. The engine is also ideally suited to be used in an open or containerized application or in a static or portable generator set.

What is the fuel consumption of the Cummins QSX15-G4 engine?

The Cummins QSX15-G4 fuel consumption depends on its load. At 1500 rpm prime power it is has the following fuel consumption (percent of prime power):

  • At 25% it uses 26.6 litres/hr
  • At 50% it uses 45.7 litres/hr
  • At 75% it uses 67 litres/hr
  • At 100% it uses 85.7 litres/hr

What are the dimensions of the Cummins QSX15-G4 diesel engine?

The dimensions of this Cummins Diesel Engine are 2269mm long, 1332mm wide, 1669mm high and has a dry weight of 1658 kg. The dimensions of the bore and stroke are 137mm and 169mm respectively. 

This robust and versatile engine can be coupled with an alternator to create a generator. The versatility of this engine makes it fit for many different industries in many different harsh climates.

What customer support is offered with the Cummins QSX15-G4 diesel engine?

With every Cummins product comes a top level of support and service which is offered through their world class network. This network provides help with a range of issues such as technical support and identifying genuine spare parts.

Article: 290, Version: 1