B6.7 For School Bus (2017)

Overview

B6.7 For School Bus (2017)

SmartEfficiency: High-Achieve and Cost-Lowering

 

The Cummins SmartEfficiency initiative is a focused approach that improves uptime and reliability while providing a broad spectrum of reliable 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, we continue 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 7 percent better fuel economy over the EPA 2013 ISB6.7.  The B6.7 will have accumulated 1.5 million test miles in multiple real-world applications prior to its 2017 launch, ensuring exceptional uptime from the start. Plus, the 2017 B6.7 will be fully capable for the introduction of stop-start technology that will yield further improvements in fuel economy in stop-and-go duty cycles. That’s Cummins, SmartEfficiency – not just for the B6.7, but for an entire industry.

 

Aftertreatment Technology: Simply Better

 

The Cummins B6.7 diesel engine features a new Single Module™ aftertreatment system that sets the new standard for efficiency. 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.

 

Connected Diagnostics: Smarter Route Management with Connected Diagnostics

 

School 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.

PowerSpec

Cummins PowerSpec is an electronic tool that makes it possible to tailor the operation of Cummins engines in every on-highway application.

Available for: On-Highway, School Bus

See B6.7 for Bus (2017) PowerSpec Engine Features

Specifications

B6.7 Specifications

Advertised Horsepower

200-300 HP

164-224 Kw

Peak Torque

520-660 lb-ft

705-896 N*m

Governed Speed

2600 rpm

Clutch Engagement Torque

400 lb-ft

542 N*m

Number of Cylinders

6

Engine Weight (Dry)

1,150 Lbs

522 Kg

Engine Finder Specifications

Markets
Certification Level EPA 2017
Power 200 - 300 hp / 149 - 224 kW
Torque 520 - 660 lb-ft / 705 - 895 N•m

Ratings

B6.7 Ratings

 

Engine Model

Advertised
HP (Kw)

Peak Torque
Lb-ft (N*m) @ RPM

Governed Speed

B6.7 300

300 (224)

660 (895) @ 1600

2600

B6.7 280

280 (209)

660 (895) @ 1600

2600

B6.7 260

260 (194)

660 (895) @ 1600

2600

B6.7 250

250 (187)

660 (895) @ 1600

2600

B6.7 240

240 (179)

560 (759) @ 1600

2600

B6.7 220

220 (164)

600 (814) @ 1600

2600

B6.7 220

220 (164)

520 (705) @ 1600

2600

B6.7 200

200 (149)

520 (705) @ 1600

2600

Features

Cummins designs, develops and supports every component, from the air handling to the exhaust aftertreatment, to work as a totally integrated system – so we can optimize every function better than other engine manufacturers.

  • VGT Turbo from Cummins Turbo Technologies - This patented design is widely recognized as an industry performance leader. The refined design improves responsiveness in the B6.7 while an upgraded bearing system increases overall robustness. The VGT Turbo is a key element in providing increased fuel economy and exceptional braking horsepower

  • Connected Diagnostics™ - Wirelessly connect your engine to Cummins through a telematics device for immediate diagnosis of a fault alert. Within seconds, Connected Diagnostics provides a clear recommendation for continued operation or the need for service.

  • High Pressure Common Rail (HPCR) Fuel System - Delivers superior performance even in lower engine rpm ranges. Enables multiple injection events per cycle, for improved fuel efficiency with quieter, smoother operation.

  • Air Handling System - A more robust Exhaust Gas Recirculation (EGR) cooler and valve enhance thermal efficiency and reliability.

  • Single Module Aftertreatment From Cummins Emission Solutions - 
    Combines high-efficiency SCR, a more reliable dosing unit and a DPF into a single flow-through unit. It is up to 70 percent smaller, so it’s easier to install, and as much as 30 percent lighter than the aftertreatment units it replaces. Better heat management improves fuel efficiency and minimizes periodic maintenance.

  • Fuel Filters And Lube Filters From Cummins Filtration - Fleetguard® filters protect against corrosion and contaminants with innovative NanoNet® technology. NanoNet media provides 10 times better protection than conventional fuel filters for lower cost of operation.

  • Single High-Capacity Electronic Control Module (ECM) - Offers higher capacity for faster processing of more information, fully integrated control over the engine and aftertreatment system for optimized performance and improved engine lamp strategy.

Maintenance

 Maintenance Item

Miles/Kilometers

Hours

Months

Oil and Filter

15,000 mi

24,000 km

500

6

Fuel Filter

15,000 mi

24,000 km

500

6

Overhead Adjustment

150,000 mi

240,000 km

5,000

48

Standard Coolant Change

60,000 mi

96,000 km

2,000

24

Coalescing Filter

75,000 mi

120,000 km

2,500

 

DEF Filter

200,000 mi

320,000 km

6,500

 

Particulate Filter Cleaning

200,000 mi

320,000 km

6,500