• TOPICS
    • Design
    • Manufacturing
    • Inspection
    • Heat Treating
    • Lubrication
    • Materials
    • The Gear Industry
    • Gears by Type
  • MAGAZINE
    • Current Issue
    • Departments
    • Archives
    • Subscribe
    • Advertise
  • NEWSLETTER
    • Subscribe
  • VIDEO
    • Gear Technology TV
      • Ask the Expert Live
      • Revolutions
    • Industry Videos
  • BLOGS
  • BUYER'S GUIDE
  • NEWS and EVENTS
    • Product News
    • Industry News
    • Events
  • ADVERTISING
    • Brand Awareness
      • Print: Display Advertising
      • Online: Web Banners & Keyword Banners
      • Online: Native Advertising (Sponsored Content)
      • E-mail: Custom, White Papers & Webinars
      • E-mail: Newsletter Sponsored Content (Native Advertising)
    • Response & Lead Generation
      • Online: Sponsored Content (Native Advertising)
      • E-mail: Newsletters
      • E-mail: Newsletter Sponsored Content (Native Advertising)
      • E-mail: Custom, White Papers & Webinars
      • Online: Buyers Guide
    • Print Advertising
      • Print: Display Advertising
      • Print: MPT Expo Showstoppers
      • Print: Buyers Guide
      • Print: Manufacturing sMart
      • Print: Specifications
      • MPT Expo Show Guide Advertising
    • Online Advertising
      • Online: Web Banners & Keyword Banners
      • Online: Native Advertising (Sponsored Content)
      • Online: Buyers Guide
      • Online: Specifications
    • E-mail Advertising
      • E-mail: E-Newsletters
      • E-mail: Newsletter Sponsored Content (Native Advertising)
      • E-mail: AGMA Industry News
      • E-mail: Custom, White Papers & Webinars
      • E-mail: Specifications
    • Special Promotions
      • Print: MPT Expo Showstoppers
      • Print: Buyers Guide
      • Print: Manufacturing sMart
      • MPT Expo Show Guide Advertising
  • CONTACT US
  • AGMA
    • Membership
    • Events
    • Education
    • Emerging Technology
    • AGMA Media
    • Standards
Subscribe
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Home » NexxtDrive’s Variable Speed Power Take-Off Provides Micro Hybrid-Functionality

NexxtDrive’s Variable Speed Power Take-Off Provides Micro Hybrid-Functionality

April 2, 2006
The NexxtPTO is a compact, variable speed mechanical power take-off that can be configured to act as an engine starter and alternator, providing micro-hybrid functionality. The first application for the new system was the operation of engine cooling fans for large diesel engines in commercial vehicle and off-highway applications. The power overhead required to run the cooling fan in a typical truck engine installation accounts for about 10% of fuel consumption. As cooling fans are sized and geared to cope with low speed, high load driving conditions, they are wasting power most of the time. According to the company’s press release, the NexxtPTO allows fan speed to be matched precisely to engine cooling requirements, resulting in overall fuel savings around 5%. "The beauty of our approach is that most of the power is transmitted by the highly efficient mechanical transmission," says Frank Moeller, director and chief engineer at NexxtDrive. "The relatively small electric machines give you full control over the speed of the output and the transmission is designed so that the electrical load drops to 0 at the most commonly used operating speed." The electrical motor/generators in the unit can be sized to replace the engine’s conventional starter and alternator to give smooth, instant start/stop and mild hybrid functionality. This is especially applicable for applications such as delivery vehicles where the engines spends significant time at idle. The system can provide controllable mechianical power or can be used to generate sufficient electricity to support significant electrical loads. With the ability to control the speed of the PTO totally independently of engine speed, the fuel consumption overhead required by ancillary equipment is kept to a minimum. Operation combines electrical and mechanical power transmission using a patented system of epicyclic gears. A belt drive from the engine runs a compact electric motor/generator and a sun gear in the epicyclic gear train simultaneously. A second electric motor/generator uses power generated by the first to turn a second sun gear. Electrical and mechanical power inputs are combined by two sets of planet gears to run the fan or other auxiliary load connected to the planet carrier.
Product News
  • Related Articles

    NUM Software Provides 'Off the Shelf' Solution for Non-Circular Grinding

    Midwest Motion’’s New Control Features Built-In Reversing Switch and Speed Adjust Potentiometer

    Koepfer’s Versatile MZ 130 Provides Same-Setup Gear Hobbing and Worm Milling

Free Gear Technology Subscriptions
Subscribe
Free Gear Technology Subscriptions
Subscribe
FEATURED VIDEO
  • Liebherr pallet
    Liebherr Palletizing Cell
June 23, 2022
RECOMMENDED
  • Precision Equals Performance at ZPE GripTec

    October 12, 2022
    gt0922_Page_28_Image_0003.jpg
  • State of the Powder Metal Industry

    October 12, 2022
    gt0922_Page_30_Image_0001.jpg
  • The Afterglow of Furnaces North America 2022

    October 12, 2022
    gt0922_Page_20_Image_0001.jpg
  • Reigniting the Educational Infrastructure

    December 5, 2022
    gt1122_Page_20_Image_0001.jpg
  • Profile: Continuing Education and Training with the AGMA

    December 5, 2022
    gt1122_Page_26_Image_0001.jpg
  • Reigniting the Educational Infrastructure

    December 5, 2022
    gt1122_Page_20_Image_0001.jpg
  • Profile: Continuing Education and Training with the AGMA

    December 5, 2022
    gt1122_Page_26_Image_0001.jpg
  • Precision Equals Performance at ZPE GripTec

    October 12, 2022
    gt0922_Page_28_Image_0003.jpg
  • Subscribe
  • Advertise
  • Contribute
  • AGMA
Powered byAGMA
Copyright © 2023 Gear Technology
  • Privacy Policy
  • Contact