Cummins begins production of Tier 4 Interim engines

Christopher Goodfellow - 22 September 2010

Cummins Logo Engine manufacturer Cummins has started production of its Environmental Protection Agency (EPA) certified Tier 4 Interim engine, for use in off-highway vehicles.

The new engines use Exhaust Gas Recirculation (EGR) to meet the standards, and achieve a fuel saving of up to 5% on previous models, according to the manufacturer.

The new QSB6.7 and QSL9 engines are built at the Cummins' Rocky Mount plant in North Carolina.The 6.7 liter QSB6.7 engine is certified to a higher power output of 300 hp (224 kW) and the nine liter QSL9 has an output of up to 400 hp (298 kW).

Agricultural vehicle manufacturer John Deere Power Systems has announced that their PowerTech PVX 6.8L and their PowerTech PSX 6.8L engine have been certified by the Environmental Protection Agency (EPA) as compliant with Tier 4 Interim standards. The company has use Exhaust Gas Recirculation (EGR) to lower emissions and meet the new standards.

Tier 4 Interim standards for off-highway vehicles will come into effect on 1 January 2011.

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