Invention Reference Number
Driveline components to improve and realize the platooning fuel efficiency benefits while also achieving deceleration needs will be key for market adoption. The described concept provides a predictive technology solution to increase the safety of platooning vehicles. This disclosure presents a concept to help manage three powertrain and chassis efficiency control levers that are used with heavy duty vehicles, such that the vehicles are able to achieve needed powertrain-centric deceleration in a timely manner, while also providing greater efficiency during propulsion modes.
These control levers include the gear state, the state of the final drive or rear axle, and the air bags for the trailer aerodynamic angle of attack. All three directly influence the ability for the engine brakes to act in an effective way on the wheels. In addition to the engine brakes, the natural driveline resistance may also be changed to create natural deceleration. Finally, the effectiveness and wear/tear on the service or foundation brakes may also be minimized by the active control of these levers.
Using look-ahead information, an algorithm will assess the capability and the transition time associated with the three levers as well as the operational need of the vehicle. This system, while useful to single vehicles driving over rolling terrain, will be particularly important for platooning vehicles—in which a group of vehicles are actively trying to maintain a short separation distance. Under these conditions, the transient capabilities of deceleration and acceleration will be important to maintain the formation.
Benefits
- Fuel economy
- Cost savings
- Improved safety of vehicle platooning
Applications and Industries
- Heavy duty vehicles
- Trucking
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
