313:, or diesel particulate filter, required by the EPA. The DPF filters out the solid particles in the engine's exhaust, reducing tailpipe emissions. The DPF does have to be regularly maintained, however, because of its intricate design. The emissions control system will institute a filter regeneration which burns off the particulates. Any non-combustible materials found in lubrication additives will remain in the DPF, which can cause problems with back pressure and efficiency. This means the DPF needs to be regularly removed and cleaned for the Cummins ISX. An ash-less oil could mean that cleaning would be unnecessary, but can inhibit lubrication properties. A zero-phosphorus oil has been studied and found to be ideal for DPF systems and lubrication. The oil displays passing results for both piston deposits and oil consumption, which means the DPF system would be optimized with use of zero-phosphorus, ultra low sulfur oil.
38:, replacing the N14 in 2001 when emissions regulations passed by the EPA made the engine obsolete. Originally called the "Signature" series engine, the ISX uses the "Intellect 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 lb-ft. 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. Cummins also produced a 650 hp and 1950 lb-ft version for the
77:(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.
338:
at a cost of efficiency. The
Cummins ISX 15 model equipped with anti backlash gearing suffers a friction loss. The gears must overcome more friction throughout their moving range than a standard gear. A standard gear in a Cummins ISX 15 needs to overcome 0.75 Newton meters of torque, while the anti backlash gearing needs to overcome approximately 5 Newton meters of torque.
325:
tampered with or is not functioning properly. Cummins has corrected several malfunctions and conducted customer based research of several million miles of on road use of the
Cummins ISX to make the DEF system as functional as possible. The system is also required to de-rate power given any problems in order to reduce emissions to an absolute minimum.
337:
is used. The anti backlash gears allow the engine to operate with minimal gear rattle. Cummins uses a gear train in the front of the engine which is inherently noisy. The anti backlash gearing makes the engine less noisy due to the reduced rattle while in operation. The anti backlash gear train comes
61:
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
50:
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
293:
in turn. The ISX can achieve this by altering ignition delay and injection timing. By examining the start of combustion (SOC), the engine's computer is able to employ a predictive ignition delay correlation. The predictive characteristics of the engine maximize both efficiency and useful power for
346:
Starting in 1998 the
Cummins Signature was released to the Australian market to replace the out going N14. The Signature was produced up until 2003, In 2003 the highly popular Oceania exclusive was released this being the Gen 2 Cummins Signature. It built upon and improved on the original Cummins
80:
In 2023, Cummins unveiled the X10 and X15N engines. The X10 is slated to replace the X12 and L9 in the truck market as it was made to serve both heavy duty and medium duty truck applications. The X15N is a CNG version of the X15, and is expected to release in 2025 with the same performance as the
51:
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.
324:
that reduces the emissions of a diesel engine. The
Cummins ISX is required to have inhibitors in place for certain failures of the DEF system. When the DEF tank is low or empty, the ISX cuts power by twenty five percent. Power cuts and driver warnings are also used when the DEF system has been
365:
294:
the given fuel source. Compensations are made for the natural gas so that the power band and operating range are still functional for customers, while reducing emissions. Testing has also been done with the
Cummins ISX by the
609:
413:"CUMMINS NEXT-GENERATION 2026 X10 ENGINE AND 2024 X15N NATURAL GAS COMPLETE POWERTRAIN EQUIPPED WITH THE LATEST DIGITAL TECHNOLOGIES ON DISPLAY FOR FIRST TIME AT TMC ANNUAL MEETING"
904:
347:
Signature. 2008 saw the third
Signature revision this was the Signature EGR which utilized the same technology as the ISX EGR range. 2012 brought along the Gen 2 EGR line.
595:
519:
Xu, Shuonan (October 13, 2014). "Development of a
Phenomenological Dual-Fuel Natural Gas Diesel Engine Simulation and Its Use for Analysis of Transient Operations".
58:(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.
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The current EPA 2010 version known as ISX15 CM2250 features enhanced exhaust gas recirculation, diesel particulate filter and
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289:. The burning of a natural gas alternative preserves diesel thermal efficiencies. The more efficient engine can produce less
672:
935:
66:
548:"Clean Energy Launches Zero Now Financing to Put Fleets in Clean New Natural Gas Trucks for the Price of a Diesel Truck"
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standard. This makes the Cummins ISX that burns natural gas one of the cleanest running diesel engines in the world.
55:
484:"Cummins and Accelera showcase broadest portfolio of decarbonizing technologies with an emphasis on hydrogen"
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The Cummins ISX diesel engine can be run in a dual fuel configuration, meaning it can properly operate on
820:
701:
589:
366:"CUMMINS ANNOUNCES NEW X10 ENGINE, NEXT IN THE FUEL-AGNOSTIC SERIES, LAUNCHING IN NORTH AMERICA IN 2026"
317:
74:
39:
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emissions reduction. The configuration boasts ninety percent lower NOx emissions than the current
764:
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627:
Joshi, Y. V (2014). "Gear Train Mesh Efficiency Study: The Effects of an Anti-Backlash Gear".
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574:"Extending the Boundaries of Diesel Particulate Filter Maintenance With Ultra-Low Ash"
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320:, in later models when EPA requirements changed. DEF is system of injected
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regeneration. In motorhomes this was available as a 600 or 650 HP version.
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610:"Control of Emissions From New Highway Vehicles and Engines"
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502:"Cummins Inc. Debuts 15-Liter Hydrogen Engine at ACT Expo"
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Slated to replace X12 in Vocational & Regional Haul
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for natural gas usage that yielded results of major
892:
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629:SAE International Journal of Commercial Vehicles
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460:"Cummins Launches New 10 Liter Diesel Engine"
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594:: CS1 maint: multiple names: authors list (
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127:Launching before EPA 2027 takes effect
673:"Cummins announces Gen II EGR engines"
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333:In early ISX engines an anti backlash
316:The Cummins ISX also utilized DEF, or
54:In 2002, the ISX CM870 brought cooled
655:"History: Cummins engines Down Under"
7:
521:SAE International Journal of Engines
14:
546:Gerber, Raleigh (July 18, 2018).
905:College of Engineering for Women
458:McGlothlin, Mike (2023-02-21).
1:
67:selective catalytic reduction
256:Phasing out started in 2016
189:Phasing out started in 2017
153:Phasing out started in 2018
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34:for heavy duty trucks and
900:Corporate Office Building
794:Divisions, subsidiaries,
246:
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182:
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56:exhaust gas recirculation
893:Buildings and facilities
572:McGeehan, A, J. (2012).
342:Cummins Signature Series
309:The ISX also utilizes a
236:Planned for 2027 onward
220:Planned for 2024 onward
202:Built off the X12 block
124:Planned for 2026 onward
931:Diesel engines by model
21:Cummins X-series engine
926:Cummins diesel engines
872:Cummins Quantum Series
811:Jacobs Vehicle Systems
132:Slated to replace L9
69:(SCR), also known as
16:Type of diesel engine
936:Straight-six engines
641:10.4271/2014-01-1769
533:10.4271/2014-01-2546
318:diesel exhaust fluid
239:Testing in progress
105:Years of Production
75:diesel exhaust fluid
73:. SCR consists of a
755:Joseph Irwin Miller
25:Inline (Straight)-6
796:and joint ventures
765:Anant J Talaulicar
677:Cummins Commentary
443:has generic name (
396:has generic name (
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774:Current personnel
679:. March 28, 2012.
277:Emissions Control
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200:Replaced ISX12 G
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821:Cummins-Wärtsilä
748:Former personnel
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214:137 mm × 169 mm
180:130 mm × 150 mm
161:132 mm × 144 mm
144:130 mm × 150 mm
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508:. 2022-05-09.
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555:. Retrieved
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211:Natural Gas
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36:motorcoaches
30:produced by
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635:: 271–277.
441:|last=
419:. p. 1
394:|last=
372:. p. 1
287:natural gas
283:diesel fuel
920:Categories
806:Cummins UK
659:trucksales
469:2023-07-02
351:References
335:gear train
329:Technology
253:2010–2020
186:2013–2018
167:2018–2026
150:2010–2020
760:Tim Solso
725:Personnel
433:cite news
386:cite news
291:emissions
230:Hydrogen
867:M Series
862:L Series
857:X Series
852:F Series
847:C Series
842:B Series
838:Engines
832:Products
732:Founders
423:26 March
376:26 March
174:ISX12 G
42:market.
878:Trucks
718:Cummins
506:Cummins
488:Cummins
264:14.9 L
250:14.9 L
247:Diesel
233:14.9 L
217:14.9 L
194:ISX12N
183:11.9 L
164:11.8 L
147:11.9 L
141:Diesel
116:Diesel
46:History
32:Cummins
244:ISX15
138:ISX12
108:Notes
93:Model
86:Models
23:is an
227:X15H
208:X15N
121:10 L
96:Fuel
81:X15.
882:Aeos
596:link
578:TRID
559:2019
445:help
425:2023
398:help
378:2023
322:urea
285:and
261:X15
158:X12
113:X10
19:The
637:doi
614:EPA
529:doi
311:DPF
304:EPA
300:NOx
296:EPA
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