Cummins ISL
The Cummins ISL is a straight-6 diesel engine designed and produced by Cummins. It is 8.9 liters in displacement, and went into production in 1998. The engine was based on its 8.3 liter predecessor, the Cummins C8.3 engine.
By late 2003, Cummins announced that they will revise the engine to sport a High-Pressure Common-Rail (HPCR) system to help with emissions and also a variable geometry turbocharger system to help with the performance on this engine.
The Cummins ISL also has a sister engine which is based on the existing ISL 8.9-liter block which runs on compressed natural gas. Cummins reintroduced this engine as the L Plus engine which has a power rating of 330 horsepower (246 kW), and it is for 60-foot (18 m) articulated bus. A few thousand units of this engine are now operating in a wide variety of applications.
The ISL is not to be confused with the older L10 series, which Cummins had produced and sold from 1982 to early 1998. The old L10 series, which like the current ISL, had seen use in the applications listed above (plus, early Dennis double decker buses), displaced 10.0 liters, was slightly larger, and had been replaced by the M11 entirely in 1994, although the natural gas version, known as the L10G, had hung on until the spring of 1998.
Models
- ISL 250
- ISL 280
- ISL 330
Emmissions Certifications
Euro Standards
| Tier | Requirements and Features |
|---|---|
| Euro III |
|
| Euro IV |
EPA Standards
| Tier | Requirements and Features |
|---|---|
| EPA-2002 | |
| EPA-2007 |
|