- Cummins L Series engine
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Cummins L Series Manufacturer Cummins Also called ISL, ISL G Production 1998 Predecessor Cummins C8.3 Configuration Straight-six diesel engine Displacement 8.9 litres (543.1 cu in) Cylinder block alloy Cast iron Cylinder head alloy Cast iron Turbocharger variable geometry turbocharger Fuel type Diesel Oil system Wet sump Cooling system Water-cooled The Cummins ISL is a straight-six diesel engine designed and produced by Cummins. It displaces 8.9 litres (543.1 cu in), and began production in 1998. The engine was based on its 8.3 litres (506.5 cu in) predecessor, the Cummins C8.3 engine.
In late 2003, Cummins announced that they would 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.[citation needed]
The Cummins ISL also has a sister engine which is based on the existing ISL 8.9 litre cylinder block which runs on compressed natural gas (CNG). Cummins reintroduced this engine as the L Gas Plus engine, which has a power rating of 320 horsepower (239 kW; 324 PS) (238 kW), and it is for 60 feet (18.3 m) (18 m) articulated bus.[citation needed] A few thousand units of this engine are now operating in a wide variety of applications. A further development of this engine is known as the ISL G and features stoichiometric combustion (in lieu of lean burn) as well as EGR for reduced combustion temperatures.[citation needed]
Contents
Applications
Popular power ratings
- Urban bus
- 730 pound force-feet (990 N·m) @ 1300 rpm, 250 horsepower (186 kW; 253 PS) electronically governed at 2,200 rpm
- 900 pound force-feet (1,220 N·m) @ 1300 rpm, 280 horsepower (209 kW; 284 PS) (209 kW) electronically governed at 2,200 rpm
- 1,100 pound force-feet (1,491 N·m) @ 1300 rpm, 330 horsepower (246 kW; 335 PS) (246 kW) electronically governed at 2,200 rpm
- Firetruck/Motorhome/Truck
- 1,050 pound force-feet (1,424 N·m) @ 1,300 rpm, 310 horsepower (231 kW; 314 PS) (231 kW) electronically governed at 2,100 rpm
- 1,150 pound force-feet (1,559 N·m) @ 1,300 rpm, 330 horsepower (246 kW; 335 PS) (246 kW) electronically governed at 2,100 rpm
- 1,200 pound force-feet (1,627 N·m) @ 1,300 rpm, 400 horsepower (298 kW; 406 PS) (298 kW) electronically governed at 2,200 rpm
ISL vs. L10
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 litres (610.2 cu in), 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.
The ISL nomenclature was born out of the fact that after the original L10 had been dropped, there was no engine series to bridge the gap between the C8.3/ISC and the M11/ISM. Thus Cummins marketed the ISL starting in 1999.[citation needed]
References
External links
Categories:- Cummins diesel engines
- Diesel engines by model
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