Jump to content

Meet The Largest Cummins Ever Built: The 4,000HP QSK95

Recommended Posts

Just when we thought we’d seen it all (“78.0L Colossal Cummins Engine” June ’10), Cummins created an even larger engine to help conquer the globe. The all-new, V-16 QSK95 engine, built in Seymour, Indiana, was designed for long-hour, extreme-load applications in passenger and freight locomotives, various marine vessels, and ultra-class mine trucks. In addition, it will be used in power generation applications as well as in the offshore oil drilling industry (at varying power levels).


1 Quad-turbocharger, single-stage, forced induction system

2 Modular common-rail system (MCRS) provides injection pressures in excess of 31,000 psi

3 One-piece, forged-steel pistons for utmost durability

4 Hardened cylinder bores with mid-stop cylinder liners

5 Deep-skirt, ductile-iron block utilizes internal bedplate for increased rigidity

6 Four Cummins ECMs control each engine quadrant and sit (protected) at the front of the engine for easy accessibility and diagnostic interfacing


At 95 liters, the QSK95 displaces more than 5,700 cubic inches—and makes 4,055 hp (or 2,983 kW) at 1,200 rpm. For a solid foundation, the QSK95’s ductile-iron, deep-skirt block incorporates an internal bedplate for great rigidity and to help minimize engine vibration. Durable, single-piece, forged-steel pistons are utilized and can be reused at overhaul. The hardened cylinder bores feature mid-stop cylinder liners and dual-piston cooling nozzles per cylinder for reduced piston temperatures and increased wear resistance.

According to Cummins, this engine can consume more than 1.7 million gallons of fuel before an overhaul is required. The QSK95 also meets Tier 4 Final Rule emissions standards for off-highway equipment and does so without the use of exhaust gas recirculation (only selective catalytic reduction aftertreatment is used). Last but not least, Cummins will also soon begin producing a 20-cylinder, 120.0L version (QSK120) capable of more than 5,000 hp.

Fuel and Air

The latest generation modular common-rail system (MCRS) keeps the combustion event extremely efficient. In fact, in-cylinder injection pressures can exceed 31,000 psi (2,200 bar). Cummins’ new NanoNet fuel filtration system offers superior fuel cleanliness, which allows engines to operate anywhere in the world (with varying fuel quality). Up top, four compact turbochargers respond exceptionally well to load (providing outstanding step-load resistance) and transient response, despite their single-stage arrangement.

Share this post

Link to post
Share on other sites

wow!!!!!!!!!!! not a V diesel fan but for it's intended use this will be the ticket. :ok:

would be cool to build a pickup beefy enuff to house this to run firebird :coal:

Share this post

Link to post
Share on other sites
...would be cool to build a pickup beefy enuff to house this to run firebird :coal:

We'd need a truck as big as a locomotive, so might as well run the locomotive. $$$

can motor mayhems dyno measure it??????? luke???? glen???? :lmao:


Hey, Muddy, I bet it can...with the engine in neutral! :train:

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Upcoming Events

    No upcoming events found
  • Recently Browsing

    No registered users viewing this page.