Birmingham, UK (September 30, 2015) – Visitors to Coach & Bus Live at the NEC today were able to view the latest Cummins ISB engines with new SmartEfficiency ratings for 2017, complying with the upcoming Euro 6 OBD C requirements*. Displayed on stand G10, these engines will be in production in the fourth quarter of 2016.

OBD C is the latest step in the Euro 6 legislation and affects new vehicle type approvals from 31st December 2015 and all vehicles from 31st December 2016. The key changes to the regulations impact the On Board Diagnostics (OBD) requirements as follows;

  • The NOx emissions threshold detected by the system is reduced from 1500mg/kWh to 1200mg/kWh
  • Particulate Matter emissions detection threshold is introduced at 25 mg/kWh
  • The level at which sub-standard quality Adblue is detected is lowered from 0.9g/kWh to 0.46g/kWh
  • OBD diagnostic operation must report how many times the monitor actually successfully runs per the number of drive cycles

Claudio Barcena, Cummins Regional engine Sales Leader, said: “Euro 6 has been the most technically challenging emissions step to date. Our leadership in engine driveline integration means we have achieved it successfully, with more installations than at Euro 5. We don’t stop there though, as our engineers continue to partner with vehicle manufacturers and operators to gain a deeper understanding of their business and how our engine technologies can be tailored to deliver improved fuel efficiency and cost of operation. These findings are being incorporated in our 2017 products.”

For 2017 Cummins will offer new ratings specifically developed for bus operation. Substantially improved low end torque, from 700 rpm, will deliver improved vehicle acceleration across the rev range. The ISB4.5 4 cylinder engine moves up to a new peak torque of 850 Nm from 760 Nm. The ISB6.7 6 cylinder engine moves to a high peak torque of 1200 Nm from 1100 Nm along with a new 300 hp/224 kW top bus rating. This increases the scope of Cummins product offerings for the bus sector, being suitable for wider range of applications, vehicle weights and duty cycles.

It supports the demands of European bus operators by offering added value in a market where competitive fuel economy and total cost of operation are critical success factors. Potential savings have already been seen by even closer matching of engine performance characteristics to vehicle types and modes of operation. Cummins capability to offer greater power density with no impact on displacement is a key factor behind this.

“Euro 6 has changed the landscape for engine installation and operation, and the previous rules don’t apply. Our objective for 2017 has not just been to meet the legislated requirements but to provide improved performance and efficiency with no changes to displacement or hardware. We will continue to learn alongside our customers and drive improvements which sustain the ISB’s position as market leader,” added Barcena.

About Cummins
Headquartered in Columbus, Indiana, (USA) Cummins employs approximately 48,000 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 $1.65 billion on sales of $19.2 billion in 2014. More information can be found on  Follow us on Twitter at @cumminseurope.