QSM (Tier 3)

Overview

QSM (Tier 3)The new Tier 3 and Stage IIIA compliant Cummins QSM engines take you to a whole new level of power, versatility and emissions control.

Every day, QSM engines are put to the test in industrial applications worldwide. With superior performance that's the result of advanced "in-cylinder" combustion technology and our responsive wastegated turbo. Both emissions and efficiency are optimized by the QSM's electronically controlled unit injectors with cam-driven rate shaping.

The advanced design of the QSM ensures that maintenance is kept to an absolute minimum. With oil change intervals that are double the previous standards in some applications, sealed sensors and an auto-tensioning belt drive.

Available in a range of ratings from 290-400 hp (216-298 kW), the QSM is the first engine to be certified to EPA Tier 3 and Euro Stage IIIA levels.

To ensure that every QSM is perfectly matched to every piece of equipment, Cummins PowerMatch and Advisor are ready to provide expert assistance with your spec'ing and installation process.

The QSM comes with virtually every feature, standard. Plus, an optional REPTO (Rear Engine Power Take-Off) adds capacity for driving remote-mounted devices.

Every QSM engine is covered by Cummins three-step warranty, one of the most comprehensive and simplest plans in the industry.

Specifications

The high-pressure injection system and electronic controls of the QSM ensure clean, powerful and efficient operation every time. The ECM continuously monitors data from strategically placed sensors within the engine, optimizing the fuel-to-air mixture for maximum combustion. This increases engine responsiveness, improves fuel efficiency and significantly reduces noise levels.

Specifications.
Engine Type In-Line, 6-Cylinder  
Displacement 660 cu in 10.8 L*
Advertised Horsepower 290-400 hp 216-298 kW
Peak Torque 1050-1400 lb-ft 1424-1898 N•m
Bore and Stroke 4.92 in x 5.79 in 125 mm x 147 mm
Aspiration Turbocharged and Charge Air Cooled  
Oil System Capacity 41 U.S. qt 39 L*
Coolant Capacity 10 U.S. qt 9.5 L*
Length 51.4 in 1306 mm
Width 36.0 in 914 mm
Height 50.4 in 1280 mm
Weight (wet) 2,170 lb 984 kg

* L = Liters/Litres

Engine Finder Specifications

Markets
Certification Level Tier 3 / Stage IIIA
Power 290 - 400 hp / 216 - 298 kW
Torque 1090 - 1400 lb-ft / 1478 - 1898 N•m

Ratings

Engine Model Advertised hp (kW) @ rpm Peak hp (kW) @ rpm Peak Torque lb-ft (N•m) @ rpm
QSM 400* 400 (298) @ 2100 446 (333) @ 1800 1400 (1898) @ 1400
QSM 400* 400 (298) @ 2100 428 (319) @ 1900 1400 (1898) @ 1400
QSM 400 400 (298) @ 2100 403 (301) @ 1800 1400 (1898) @ 1400
QSM 400 400 (298) @ 2100 400 (298) @ 1800 1400 (1898) @ 1400
QSM 375 375 (280) @ 2100 400 (298) @ 1800 1400 (1898) @ 1400
QSM 360 360 (268) @ 2100 385 (287) @ 1800 1350 (1831) @ 1400
QSM 360** 360 (268) @ 1800 360 (268) @ 1800 1260 (1709) @ 1400
QSM 350 350 (261) @ 2100 385 (287) @ 1800 1310 (1776) @ 1400
QSM 350 350 (261) @ 2000 372 (277) @ 1800 1350 (1831) @ 1400
QSM 340** 340 (254) @ 1800 340 (254) @ 1800 1260 (1709) @ 1400
QSM 335 335 (250) @ 2100 365 (272) @ 1800 1235 (1674) @ 1400
QSM 330 330 (264) @ 2100  333 (248) @ 1800  1235 (1674) @ 1400 
QSM 300 300 (224) @ 2100 335 (250) @ 1800 1050 (1424) @ 1400
QSM 300  300 (224) @ 2000  343 (256) @ 1800  1162 (1575) @ 1400 
QSM 290 290 (216) @ 2100 320 (239) @ 1800 1090 (1478) @ 1400

All ratings are intermittent unless otherwise noted.

Additional ratings may be available. Check with your Cummins distributor or dealer.

*Restricted rating.
**Indicates a continuous rating.

Features

The QSM Quantum System provides superior fuel economy with strong engine performance, engine protection and other programmable features. Components include:

  • Holset HX55 Wastegated Turbo - Designed for optimum boost, it improves throttle response across operating range.
  • CELECT™ Electronic Engine Management - Provides superior performance, fuel efficiency, diagnostics and prognostics using full-authority electronics. Its programmable features let you customize engine performance to equipment use.
  • High-Capacity ECM - New space-efficient Electronic Control Module packs ten times more memory and ten times more processing power.
  • Sealed Sensors - Fully sealed to resist water intrusion. Combined temperature and pressure sensors reduce inventory and simplify maintenance with increased reliability.
  • Advanced Combustion Technology - Optimized injector tips and a reshaped steel piston bowl improve fuel economy and emissions control with longer oil change intervals.
  • Articulated Pistons - Steel-topped pistons handle higher cylinder temperatures for improved fuel efficiency and emissions control.
  • The Auto-Tensioning Belt Drive - Self-adjusting for optimum tension, which increases fan, alternator and fan belt life.
  • Improved Camshaft Durability - Exhaust valve lobes are designed to improve wear tolerance. The injector lobe profile has been revised to optimize injection.

Maintenance

The QSM was designed to deliver more time on the job and less time being serviced. Maintenance intervals have been made longer, and service has been made simpler.

Maintenance Intervals

Cummins QSM engines feature a Venturi™ oil filter by our Fleetguard subsidiary in combination with an improved lube system that increases oil flow, reduces lubrication delay at start-up and improves protection. This system allows for oil change intervals of up to 700 hours in some applications.

For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.

Brochures Available

Title Bulletin Number Request View  
Encompass Tri-Fold Mailer 3624570 Request View  Download
Every Solution - Tier 3 Engine Brochure 4087035 Request View  Download
QSM for Off-Highway Applications Spec Sheet 4087029 Request View  Download
QSM Tier 3 for Industrial Applications Spec Sheet 4087065 Request View  Download
QSM Tier 3 for Industrial Applications Spec Sheet - French 4087081 Request View  Download
Underground Mining Engines Brochure 4087284 Request View  Download