Cummins Inc has announced its technology approach for on-highway engines to meet the more stringent 2010 EPA emissions standards. The company will use an evolution of its proven 2007 systems to maintain power and torque with comparable fuel economy and maintenance intervals the same as today.
Key ingredients of the Cummins 2010 Heavy-Duty lineup include:
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No nitrogen oxide (NOx) aftertreatment: NOx reduction will be achieved by an integrated technology system comprised of the XPI High Pressure Common Rail (HPCR) fuel system, next-generation cooled Exhaust Gas Recirculation (EGR), advanced electronic controls, proven air handling, and the Cummins Particulate Filter.
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X platform expansion and increased displacement: Cummins will expand the Heavy-Duty X platform in North America to three displacements with the introduction of an 11.9L engine and a 16L engine to complement its flagship 15L product. The engines will share a common architecture including the XPI HPCR fuel system. The expansion will enable Cummins to meet a broader array of customer needs, and marks the first time in nearly 20 years that the company has had a common architecture across its Heavy-Duty products.
The next-generation cooled EGR is key to reducing emissions and NOx. EGR technology will not add complexity to the vehicle; and power, torque, fuel economy, and maintenance intervals will stay the same.
Cummins will continue to use its Variable Geometry Turbocharger (VG Turbo), which bolsters total engine performance from power output to response to superior engine braking, while working in tandem with the cooled-EGR subsystem.
The Cummins Particulate Filter, designed and manufactured by Cummins Emission Solutions and introduced in 2007, will be the only aftertreatment required for Heavy-Duty engines in 2010. The engine and aftertreatment work together to further reduce particulate emissions.
Cummins will enhance its MidRange on-highway product performance and reliability by adding Selective Catalytic Reduction (SCR) to its existing product to meet the near-zero 2010 emissions standards. SCR is technology for Cummins medium-duty truck, bus, and specialty-vehicle customers that want a simple and proven way to meet their diverse power and duty cycle needs.
SCR technology uses a chemical called urea and a catalytic converter to significantly reduce NOx emissions.
This technology is not new to Cummins. In 2006, Cummins launched its MidRange engines certified to the Euro 4 standard using SCR for commercial vehicle applications in Europe.