Cummins Inc. (NYSE: CMI) displayed its solution for 2019 China Stage IV emissions at the BAUMA CHINA show (Shanghai, November 22-25) for the first time.
“At Cummins we design our products to deliver the optimum balance of performance, reliability and cost that best fits the customer and market needs, we don’t do one size fits all. Our significant technology experience has enabled us to select the most appropriate solution for China and the Stage IV emissions regulations,” said Stephen Saxby, Director of Engineering, Cummins China.
Cummins is able to capitalize on the unique expertise and experience accumulated from Tier 4 to date as well as the EU Stage V development program to tailor solutions for the China market. For QSB6.7 and QSL9 engines, as featured on stand A68, Cummins China Stage IV (CSIV) solution uses Selective Catalytic Reduction (SCR) technology. The fully integrated engine and after-treatment system has a catalysed filter which significantly reduces NOx emissions versus Stage III. The complete system is controlled and monitored from the engine mounted electronic control module (ECM), which improves reliability, lowers cost and provides ease of installation. This single source approach offers equipment manufacturers the complete engine to exhaust pipe solution all available from Cummins.
The SCR system injects a urea solution called Adblue into the exhaust stream to minimize the NOx. It turns NO and NO2 into harmless nitrogen and steam through a chemical reaction over the catalyst. This solution enable the engine to deliver improvements in fuel efficiency of 3-5% versus the previous version. Adblue usage is expected to be very low, equivalent to 1-2% of diesel. The Adblue supply chain and infrastructure has already been established for the regional on-highway market, so it should be easily accessible for users.
“Cummins has supplied over 1.5 million SCR units around the world since 2006, so we have more experience than any other engine manufacturer in this area,” continued Saxby.
The Cummins China Stage IV SCR solution with no-EGR is designed so that it meets the regional customer needs and also aligns with Cummins EU Stage V products, which provide the direction for China Stage VI.
“Our EGR free solution allows us to offer common engine installations from China Stage IV to EU Stage V, with only the exhaust aftertreatment being different. Chinese OEMS can take advantage of the same benefits of a compact and low weight engine with excellent fuel economy and high sulphur fuel tolerance whether their equipment is being used locally or shipped internationally,” added Saxby
For CSIV, the 6.7-litre QSB6.7 engine is available from 170 hp to 300 hp (127-224 kW) with maximum torque of 1000Nm. The 9-litre QSL9 engine is available from 220hp to 375 hp (164-280 kW), with a peak torque of 940-1500Nm. Both are suitable for a wide range of construction equipment including wheeled loaders, excavators, backhoes, cranes and forklifts.
About Cummins Inc.
Cummins Inc., a global power leader, is a corporation of complementary business units that design, manufacture, distribute and service diesel and natural gas engines and related technologies, including fuel systems, controls, air handling, filtration, emissions solutions and electrical power generation systems. Headquartered in Columbus, Indiana (USA), Cummins currently employs approximately 55,000 people worldwide, and serves customers in approximately 190 countries and territories through a network of approximately 600 company-owned and independent distributor locations and more than 7,200 dealer locations. Cummins earned $1.4 billion on sales of $19.1 billion in 2015. Press releases can be found on the Web at cummins.com or cumminsengines.com. Follow Cummins on Twitter @cumminsengines and on YouTube at youtube.com/cumminsengines.