Cummins shifting focus from emissions to fuel economy
Cummins Turbo Technologies revealed a suite of near-market and future solutions capable of improving the fuel efficiency of any modern diesel engine by at least 6 percent for the first time in North America at the Mid-America Trucking Show (MATS) 2013 in Louisville, Ky. last week.
The company also announced it was changing its focus from from emissions-driven innovation toward solutions that prioritize fuel economy – highlights Cummins Turbo Technologies’ belief that the industry has now reached the tipping point at which global engine and vehicle manufacturers are developing products designed to insulate customers from rising fuel prices.
“Our close working relationship with customers has informed the research and development that is shaping our future product range and has led to the creationof technologies,” Mark Firth, Executive Director – Product Line Management and Marketing, says. “Holset turbochargers are the component of choice for many international automotive customers because we don’t simply provide them with off-the-shelf products. We develop advanced technological solutions that are fit for market; in other words, they are developed in partnership to meet customers’ specific requirements.”
The trend toward engine downsizing – which sees engine and vehicle manufacturers aiming to maintain or increase the power outputs from their products while making them smaller and lighter – represents a significant engineering challenge, Cummins says.
Among the next-generation technologies revealed were:
• A Waste Heat Turbine Expander prototype, which captures what would otherwise be lost energy in the form of heat, from a number of sources onboard the vehicle, and turns it into useful mechanical 34 hp power that is capable of reducing vehicle fuel consumption by 5 percent and delivering fuel savings of up to $5,500 per annum.
• A next-generation VGT Turbocharger based on a validated platform that can be tailored to meet the needs of individual customers easily, and that is 4.4 lb lighter than the model it replaces. It substantially lowers initial cost while featuring a high-efficiency compressor stage, delivering improved fuel economy.
• A super map width enhancement collar that enhances map width by 15 percent and facilitates engine downsizing, improves driveability, widens the operating range, aids efficiency mapping and delivers fuel savings.
• Rolling element bearings – Cummins Turbo Technologies has developed its own high-durability, low-friction ball-bearing solution that improves both transient response and lowers fuel consumption, delivering a 1 percent improvement in overall turbocharger efficiency.
• Holset Rotary Turbine Control – Patented flow-channelling technology that directs exhaust gas to selected ports, for limited exhaust control capability. RTC is integrated into the turbine housing within Cummins Turbo Technologies Modulated 2-stage (M2) and Serial 2-stage (S2) products.