Birmingham, UK (November 6, 2012) - Cummins’ next generation of ISB engines for Euro 6 emissions are revealed to the UK bus industry for the first time today at Euro Bus Expo (6-8 November).  Available from 150 to 310 ps, the engines are ideal for single and double deck buses. 


These engines, the latest versions of the renowned Cummins B Series, build on the pedigree of over 10 million units built to date.  Used around the world in a wide variety of applications they have developed a reputation for performance, fuel efficiency and durability.  Their low emissions credentials also mean they have become the engine of choice for low carbon hybrid installations.


Neil Pattison, Director - Automotive Engine Business for Europe, Middle East and Africa, said: “For Euro 4 and 5 Cummins adopted a very successful emissions strategy using SCR.  Our ISB engines delivered class-leading levels of fuel economy with low Adblue usage.  For Euro 6 we are confident that Euro 5 fuel consumption levels will be at least maintained, and Adblue consumption reduced further to around 2-3% of diesel”. 


For Euro 6, the 4-cylinder ISB4.5 engine is now available up to 210 ps for bus installations.  It has an excellent power to weight ratio and delivers a strong peak torque of 760 Nm.  The 6-cylinder 6.7 litre ISB engine extends up to 310 ps for coach installations, and 280 ps for bus applications.  Peak torque remains at a high level of 1100 Nm.


Both products use the proven EPA 2010 engine technologies of cooled exhaust gas recirculation (EGR) and variable geometry turbocharging (VGT).  These have been tailored for European vehicle design and operations, providing excellent responsiveness with low NOx emission.  


“To date we have shipped over 350,000 EPA 2010 engines, gaining more in-service experience using all of these components than anyone else, and putting us in an ideal position for Euro 6,” added Pattison.


The ISB 4.5 and 6.7-litre engines share the same style of aftertreatment system, using a Diesel Particulate Filter (DPF) with Selective Catalytic Reduction (SCR) to meet the ultra-low levels of Euro 6.  The engine and aftertreatment are controlled by the same electronic control module to meet the legislated on-board diagnostic (OBD) requirements for Euro 6.


“Euro 6 offers the biggest opportunity for the engine installation to affect the performance of the vehicle.  Cummins air intake to exhaust aftertreatment integration capability, coupled with our installation engineering expertise mean that we are best placed to help our customers deliver the best possible end result,” concluded Pattison.


About Cummins

Cummins Inc., a global power leader, is a corporation of complementary business units that design, manufacture, distribute and service engines and related technologies, including fuel systems, electronic controls, air handling, filtration, emission solutions and electrical power generation systems. 


Headquartered in Columbus, Indiana, (USA) Cummins employs approximately 44,000 people worldwide and serves customers in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributor locations and approximately 6,500 dealer locations.

Cummins earned $1.85 billion on sales of $18 billion in 2011. Press releases can be found on the Web at  More Euro 6 information can be found on  Follow us @cumminseuro6.