2023 Cummins B6.7N (2018) Base

2023 Cummins B6.7N (2018)

Cummins Westport introduces the new B6.7N natural gas engine for the school bus, shuttle, and medium-duty truck markets.

NOx emissions than current EPA regulations.

100% natural gas engine, featuring spark-ignited stoichiometric combustion with cooled EGR and a maintenance-free Three-Way Catalyst

Closed Crankcase Ventilation (CCV) system and On-Board Diagnostics for optimal emissions performance

current EPA standard); exceeds 2017 EPA GHG requirements

Cost-efficient and reliable performance

Features may include:

• Electronic Control Module: A new engine control module, CM2380, provides full monitoring and control of the engine sensors, and the fuel and ignition systems. It offers faster processing to support heavy duty On-Board Diagnostics requirements (500K baud rate). It is also telematics capable, and provides improved diagnostics and durability.

• On-Board Diagnostics (OBD): The OBD system continuously monitors the engine and after-treatment system. It gives the vehicle owner or repair technician electronic access to the status of various vehicle subsystems for diagnostic purposes.

• Closed Crankcase Ventilation (CCV) system: The CCV system reduces engine emissions by capturing crankcase emissions and rerouting these gases back to the engine. This results in more complete combustion and lower emissions.

• Enhanced Three-Way Catalyst (TWC): TWCs are effective, simple, passive devices. They provide consistent emissions control performance, are maintenance-free and can be mounted vertically or horizontally on the vehicle. No active aftertreatment such as a diesel particulate filter or selective catalytic reduction is required.

• High-Energy Ignition System: A new Ignition Control Module (ICM) provides better performance and improved spark plug and coil durability, plus self-diagnostics.