Cummins introduces 2007 ISL for vocationals

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Cummins introduced its 2007 ISL for the vocational market Tuesday, Jan. 17 at the World of Concrete trade show in Las Vegas. The new model adds cooled exhaust gas recirculation technology and an integrated Cummins particulate filter to meet the 2007 emissions standards.

This emissions reduction approach will be consistent across all Cummins 2007 North American on-highway diesel engines, Cummins says. The filter automatically collects and oxidizes particulates: When heat in the exhaust is insufficient, the engine control module controls exhaust gas temperatures so the catalytic reaction can take place, the company says.

The filter is designed to last the life of the engine but will require periodic service to remove ash content; a typical vocational truck will need this filter serviced once every 6,000 hours, according to Cummins. The engine also will feature a simple crankcase ventilation management system to eliminate oil carryover from the engine; the average vocational truck will need to replace the low-cost Enviroguard coalescing filter at every third oil change, the company says.

“The ISL has the lightest weight of any engine in its class and is available with peak horsepower up to 365 horsepower,” says Chuck Goode, Cummins specialty markets director. The engine boasts 1250 pounds-feet of torque, and maintenance intervals and fuel efficiency remain unchanged, according to the company.

A new option allows mixer operators to monitor the engine oil level from inside the cab, eliminating the need for daily manual inspection, Cummins says. The engine also features an enhanced High Pressure Common Rail fuel system, which delivers higher injection pressures for lower emissions; and it will continue to feature the variable geometry turbocharger, which adjusts airflow to increase vehicle performance.