Ford Reveals All-Electric Explorer SUV For The European Market

More

New Kia Concept EV5 previews all-electric SUV for Chinese market

More

The Volkswagen ID. 2all previews sub-25,000 euros electric car

More

The Kia EV9 all-electric SUV revealed

More

Truemag

  • Electric Car News
  • Electric Car Reviews
  • Plug-in Hybrids
  • Technology
  • Home
  • About Us
  • Privacy Policy
  • Advertise
  • Charging Map

Cummins to Unveil All-electric and Range-extended Powertrain for Transit Bus at APTA

Cummins will unveil electrified power technology for transit bus applications at the APTA public transportation show opening in Atlanta on October 9.

Cummins will display a new powertrain, configurable for either a full battery electric vehicle (BEV) or a range extended electric vehicle (REEV) incorporating a compact engine-generator. Cummins electrified power systems are ideally suited for integration into transit, shuttle and commuter buses enabling direct drive-by-wire continuous acceleration. With the bus operating in battery-only mode, the system achieves zero emissions at the point of use.

Enhanced energy storage for both the BEV and REEV systems is achieved using Cummins’ high-density battery enclosure, which are compact and modular allowing for both on-roof and chassis integration. Cummins’ unique design fits into existing bus designs.

Cummins’ proprietary control technology enables the zero-emissions bus range to be extended by optimally managing subsystems, allowing the charge of the battery to be extended. Operational flexibility is also improved with fast recharge capability using a plug-in connection, as well as options for en-route charging when a pantograph or charge plate infrastructure is available.

“The introduction of our new BEV and REEV systems will complement Cummins’ clean-diesel, near-zero natural gas and diesel-hybrid products to offer the broadest, most energy-diverse power portfolio in the bus industry. We are able to meet the needs of every transit route, every duty cycle and every emissions standard in the most cost-effective manner,” said Julie Furber, Executive Director, Electrification Business, Cummins Inc.

The standard-size Cummins battery enclosure provides a 70-kWh storage capability with up to 8 enclosure units (560 kWh) suited for installation within the BEV bus. This enables a zero-emissions range of up to 224 miles on a single charge, with an energy consumption of 25 miles per gallon diesel, which provides significant cost reductions.

Cummins REEV system has a battery pack of three enclosures (210 kWh) which can provide a zero-emissions range of up to 84 miles — a significant advantage over current hybrid bus capability. When the battery pack depletes to a low state-of-charge, the REEV system brings online a 150-kW (201-hp) engine-generator to recharge the batteries and continue operations with ultra-low emissions capability.

Compared to the standard diesel-powered bus, the REEV 4.5-liter engine is downsized by about 50 percent in terms of displacement and can achieve up to 10 miles per gallon, significantly lowering the carbon footprint. A power assist function is available from the battery pack whenever the system needs additional energy.

The REEV system’s ability to switch between shorter-range battery-only mode and extended-range generator mode allows transit authorities to geofence specific downtown areas by utilizing Cummins over-the-air connected technology. The REEV system also enables buses to travel significant distances beyond the city charging infrastructure.

Energy Efficiency

The BEV and REEV systems incorporate the same traction motor and power electronics to deliver a continuous torque output of 1850 N•m (1365 pound-foot), eliminating the need for gear shifting and dramatically reducing powertrain noise. When the vehicle requires additional tractive power during rapid acceleration or while climbing gradients, the system can deliver an instant peak torque boost of up to 3400 N•m (2508 pound-foot) for a short period.

Both systems provide a continuous electrical output of 225 kW (302 horspower), increasing to a peak output of 350 kW (469 horsepower) when it senses the need for a power boost. The high-voltage system operates at a nominal 660V when battery state-of-charge is around 50 percent.

Battery energy storage levels are boosted on-route by accepting “free” energy recovered through regenerative braking. On a frequent stop/start bus duty cycle, this could contribute the equivalent of 20 percent to the total state-of-charge.

Electrical energy is also exportable from the Cummins system to all electric-powered accessories featured on the bus, such as e-power steering, e-HVAC, e-air compressors and e-cooling fans, adding up to a typical 25-kW (33-horsepower) load at any one time. The electrical supply from the Cummins system can be both low-voltage DC and high-voltage AC, helping to simplify the installation and lower the cost of the e-accessories package.

The same electronic control module used on the popular L9, L9N and B6.7 bus engines is adapted for use as the BEV and REEV system controller, offering familiar diagnostics and the connectivity that bus operators experience today.

Oct 7, 2017Blagojce Krivevski
GKN opens state-of-the-art innovation centre in UKAudi e-tron FE04 impresses in Formula E test at Valencia
You Might Also Like
 
Nissan Announces EV Expansion Plans for Europe
 
New large electric bus order brings BYD over 100 sales in Scandinavia
Blagojce Krivevski

Blagojce Krivevski is physicist and green technology lover. Keep in touch with Blagojce through his email, web site, Twitter, Linkedin, Facebook and Google+.

October 7, 2017 TechnologyCummins, cummins bev, cummins reev, electric bus, electric Transit Bus, electric vehicle, range extended electric vehicle
Follow Us
  • facebook
  • twitter
  • google-news
  • linkedin
  • youtube
  • instagram
  • rss
Recent News
LG Energy Solution to Invest $5.5 Billion to Build Battery Manufacturing Complex in Arizona
March 27, 2023
Design details of the all-new smart #3 unveiled ahead of Shanghai debut
March 27, 2023
Fisker Ocean Extreme achieves a combined WLTP range of up to 707 km, exceeding previous estimates
March 27, 2023
All-electric Porsche Cayenne to be built in Bratislava
March 27, 2023
Pininfarina involved in the design of Izera electric cars
March 27, 2023
About
ElectricCarsReport.com ElectricCarsReport.com is a website dedicated to pure electric vehicles and the full range of consumer information and tools about electric cars, green technology energy, and the environment.
Latest News
LG Energy Solution to Invest $5.5 Billion to Build Battery Manufacturing Complex in Arizona
March 27, 2023
Design details of the all-new smart #3 unveiled ahead of Shanghai debut
March 27, 2023
Fisker Ocean Extreme achieves a combined WLTP range of up to 707 km, exceeding previous estimates
March 27, 2023
Get in touch

Email: [email protected]

Get new stories by email:
Archives
  • facebook
  • twitter
  • google-news
  • linkedin
  • youtube
  • instagram
  • rss
DMCA.com
© ElectricCarsReport.com | All Rights Reserved.