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The Cummins ISX is an Inline (Straight)-6 diesel engine produced by Cummins for heavy duty trucks and motorcoaches, replacing the N14 in 2001 when emissions laws passed by the EPA made the engine obsolete. Originally called the "Signature" series engine, the ISX uses the "Interact System" (hence the "IS" which is the moniker for the full authority, on highway fuel system Cummins pioneered) to further improve the engine. This engine is widely used in on highway and vocational trucks and is available in power ranging from 430 hp all the way to 620 hp 2050 ft/lbs. The QSX is the off-highway version of the ISX with the Q standing for Quantum. The QSX is used for industrial, marine, oil & gas and other off-highway applications.

Until 2010 this engine was a dual overhead cam design with one cam actuating the injectors and the other the valve train. This injection system is known as HPI (high pressure injection) where the injectors are cam-actuated to create injection pressure. The fuel system uses an Integrated Fuel System Module (IFSM) with a lift pump, gear pump, pressure regulators, shutoff valve, metering and timing actuators to deliver fuel to the injectors. It has a one piece valve cover that is either plastic or on older models a chrome plated steel cover otherwise known as the Signature 600 or ISX CM570.

In 2002, the ISX CM870 brought cooled Exhaust Gas Recirculation (EGR) which takes exhaust gas and recirculates it back into the intake of the engine lowering the combustion chamber temperatures limiting the formation of NOx.

In 2008, Cummins unveiled the ISX CM871, this engine featured a Diesel Particulate Filter (DPF) which trapped the particulate matter or "soot" produced in the engine. With the help of the Diesel Oxidation Catalyst (DOC) the soot trapped in the DPF is oxidized and turned to ash during a process called regeneration.

The current EPA 2010 version known as ISX15 CM2250 features enhanced Exhaust Gas Recirculation, Diesel Particulate Filter and Selective Catalytic Reduction (SCR), also known as Urea Injection. SCR consists of a Diesel Exhaust Fluid (DEF - composed of urea and water) injection system: holding tank, pump, controller, and injector and an SCR catalyst brick. DEF is heated, pumped and injected into a decomposition tube which then reacts with the exhaust reducing NOX. The ISX15 CM2250 and CM2350 has eliminated the injector camshaft due to the advent of the common rail fuel system in which the fuel is pressurized from a high pressure, multiple piston pump, transferred through tubing to a rail where fuel is stored under extremely high pressures up to 35,000 psi.



Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Cummins_ISX — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

234 news items

 
Natural Gas Intelligence
Fri, 26 Jun 2015 13:37:30 -0700

... North Carolina-based Innovative Transportation Services' Sonwil Distribution Center in Buffalo, which in early 2014 announced it was operating four Kenworth T660 CNG trucks featuring GCW 107,000-pound hauling capacity, Cummins ISX 12-liter G 2013, ...

Fremont Tribune

FireEngineering.com
Fri, 05 Jun 2015 08:00:00 -0700

Each will be built on a Spartan Gladiator chassis powered by a 500-horsepower Cummins ISX 12 engine and equipped with Advanced Protection Systems with side-impact air curtains. They feature Waterous CSU 2,000 GPM single-stage pumps (rated at ...

Fleet Equipment Magazine

Fleet Equipment Magazine
Wed, 01 Apr 2015 09:45:59 -0700

Donaldson Co., manufacturer of filtration systems and parts, announced the company's ground-breaking fuel filtration technology is available for Cummins ISX engines. There are two Donaldson Blue fuel filters available: The DBF5811 for 15.0-liter ISX ...
 
Fleet Owner
Mon, 29 Sep 2014 07:13:36 -0700

A new dual-fuel conversion system from Skygo Fuel Systems has been approved for use with 2007-2009 Cummins ISX engines, the company said. According to Skygo, the EPA has given the green light to the system, which provides up to a 60% displacement ...

Transport Topics Online

Transport Topics Online
Mon, 16 Feb 2015 11:29:26 -0800

The SmartAdvantage fuel-economy package, currently offered with the Cummins ISX-15 diesel and Eaton's Fuller Advantage automated manual transmission, is now available on Cummins' ISX-12 diesel, the companies said. The package boosts fuel ...
 
Truckinginfo
Tue, 30 Apr 2013 10:06:00 -0700

Navistar announced in July 2012 that it would discontinue its EGR-only approach and bring SCR-equipped Cummins ISX engines back into databooks by the spring of 2013, reuniting the ISX and the ProStar+. Tom Smith, director of ISX/SCR integration at ...

Equipment World Magazine

Equipment World Magazine
Thu, 26 Mar 2015 22:06:30 -0700

Cummins offered a sneak-peek at its 2017 greenhouse gas engine technology at the inaugural press conference at the 2015 Mid-America Trucking Show. Details remain sparse, of course, but Srikanth Padmanabhan, vice president of the company's engine ...
 
Fleet Owner
Fri, 06 Dec 2013 06:37:30 -0800

The line includes replacement filters for fuel, air, lube and liquid and are specifically designed to meet performance requirements for each application, Donaldson said. Donaldson replacement filters are manufactured to the same quality standards as ...
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