B6.7 Hybrid For Transit Bus (2017)
SmartEfficiency: High-Achieving and Cost-Lowering
The Cummins SmartEfficiency initiative is a focused approach that improves uptime and reliability and providing a broad spectrum of engine choices to meet every need. The combination of a low cost of operation, high reliability, clean operation and long-term durability are unsurpassed in the industry. The fact that all Cummins engines use the same control system technology and can be serviced at any authorized Cummins location ensures serviceability anywhere, anytime
Even with a legacy of over 12 million B series engines sold over the last 32 years, Cummins continues to keep improving a time-tested and proven reliable product. That’s why Cummins is redefining a classic and introducing the newest-generation B Series engine – the B6.7. The Cummins B6.7 for 2017 is more efficient, with up to 5 percent better fuel economy over the EPA 2013 ISB6.7.
Aftertreatment Technology: Simply Better
The B6.7 Hybrid system operates at consistent engine speeds and temperatures, providing a perfect match for the application of the Single Module aftertreatment system. It combines Selective Catalytic Reduction (SCR) and a Diesel Particulate Filter (DPF) into a single flow-through design. It occupies up to 70 percent less space and weighs up to 30 percent less. The smaller size allows it to be installed closer to the engine, for better heat management. That, together with the reduced weight, contributes to improved fuel economy. The UL2 Urea Dosing System eliminates the need for engine coolant lines to the doser, provides more efficient atomization, to minimize the risk of urea dosing deposits and reduces regeneration events, while maintaining a 3 percent to 4 percent Diesel Exhaust Fluid (DEF) usage factor.
In transit applications, the B6.7 Hybrid system provides up to 5 percent fuel-economy improvements compared with the 2013 ISB6.7 Hybrid. That is a result of an enhanced VGT turbocharger, reduced friction and better thermal management.
Connected Diagnostics: Smarter Route Management with Connected Diagnostics
Transit bus drivers have enough to pay attention to without being concerned about engine fault codes. In the rare event that one is triggered while the bus is in operation, it can be diagnosed immediately over the air, through the addition of Connected Diagnostics. Cummins Connected Diagnostics delivers real-time engine fault code analysis, with a probable diagnosis and a recommended action for school buses that are equipped with telematics.