Cummins ISL
The Cummins ISL is an 8.9 litre, inline six cylinder diesel engine. Introduced (for buses) in 1999, the ISL was designed to bridge a gap in Cummins' line of engines that the discontinuation of L10 had left, however it is not a direct descendant of the L10 and has more in common with the ISC.
The CNG-fueled L Gas Plus was based on the ISL's 8.9 litre block. It was replaced by the Cummins Westport ISL G in 2008.
The EPA 2004 compliant ISL was introduced in October 2002 and met the limits of 2.5 g/hp-hr of nitrogen oxide (NOx) and nonmethane hydrocarbons (NMHC) and 0.1 g/hp-hr of particulate matter. Cummins updated the ISL with a High-Pressure Common-Rail (HPCR) injection system and a variable geometry turbocharger to improve the performance of the engine.[1]
The EPA 2007 standards set a limit of 0.01 g/hp-hr of particulate matter. The ISL features a particulate filter and a crankcase coalescing filter to control emissions. During the phase-in period between 2007 and 2009, Cummins produced 50% of their engines to meet EPA 2010 regulations. The EPA set 2010 NOx emission at 0.2 gr/hp-hr. Cummins employed selective catalytic reduction (SCR), which was already used in Europe to meet the Euro 4 levels, to reduce NOx emissions. Cummins announced on January 8, 2010 that the ISL9, as it is now known, received EPA 2010 certification.[2]
Models
| Model | Max. power | Max. revs | Max. torque | Emmissions certifications |
|---|---|---|---|---|
| ISL 250 | 250 hp | 2200 rpm | 730 lb-ft @ 1300 rpm | EPA 2004, EPA 2007 |
| ISL 280 | 280 hp | 2200 rpm | 900 lb-ft @ 1300 rpm | EPA 2004, EPA 2007 |
| ISL 330 | 330 hp | 2200 rpm | 1100 lb-ft @ 1300 rpm | EPA 2004, EPA 2007 |
| ISL9 250 | 250 hp | 2200 rpm | 730 lb-ft @ 1300 rpm | EPA 2010 |
| ISL9 280 | 280 hp | 2200 rpm | 900 lb-ft @ 1300 rpm | EPA 2010 |
| ISL9 330 | 330 hp | 2200 rpm | 1100 lb-ft @ 1400 rpm | EPA 2010 |
| ISL9 330 H | 330 hp | 2200 rpm | 1050 lb-ft @ 1500 rpm | EPA 2010, EPA 2021 |
| ISL9 380 | 380 hp | 1900 rpm | 1250 lb-ft @ 1696 rpm | EPA 2013 |
| ISLe | 350 hp | 2100 rpm | 1550 Nm | Euro 2 |
| ISLe | 209-260 hp | 2100 rpm | 1550 Nm | Euro 3 |
| ISLe | 280-400 hp | 2100 rpm | 1700 Nm | Euro 4, Euro 5 |
References
- ↑ Helpful Cummins ISL Information, dieselserivceparts.com. Retrieved on 2009-06-03
- ↑ Cummins Receives EPA 2010 Certification for Heavy-Duty and MidRange Engines (Press Release). 8 January 2010. Retrieved on 23 April 2012.
External links
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