real time simulation of fuel economy for platooning cars and trucks
Download
Skip this Video
Download Presentation
Real-time simulation of fuel economy for platooning cars and trucks

Loading in 2 Seconds...

play fullscreen
1 / 10

Real-time simulation of fuel economy for platooning cars and trucks - PowerPoint PPT Presentation


  • 399 Views
  • Uploaded on

Real-time simulation of fuel economy for platooning cars and trucks. Acquire data on fuel consumption for trucks in platoon operation. Create a real-time simulation of fuel savings for display during DEMO 2003. Provide a predictive model of use to the trucking industry.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Real-time simulation of fuel economy for platooning cars and trucks' - ryanadan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
real time simulation of fuel economy for platooning cars and trucks
Real-time simulation of fuel economy for platooning cars and trucks
  • Acquire data on fuel consumption for trucks in platoon operation.
  • Create a real-time simulation of fuel savings for display during DEMO 2003.
  • Provide a predictive model of use to the trucking industry.

Jerry Chen & Fred Browand

Ground Vehicle Aerodynamics Lab

collect data on fuel consumption for trucks in platoon operation
Collect data on fuel consumption for trucks in platoon operation
  • Broadcast fuel rate (cm3/sec) and wheel speed outputs on SAE J1939 serial data link are adequate to provide instantaneous fuel consumption in liters/kilometer (or gallons/mile).
  • Cummins estimates absolute accuracy of broadcast fuel rate to be within ± 3% of output value.
  • The relative measurement (for each truck):

(fuel consumption)platoon/(fuel consumption)isolation

will be much more accurate. Both these measurements must follow one another under identical ambient wind and temperature conditions.

provide a predictive model of use to the trucking industry
Provide a predictive model of use to the trucking industry
  • Fuel saving in platoon travel arises solely from a decreased aerodynamic drag.
  • Predictive models for fuel savings are related to drag savings.
  • Example:

FC = fuel consumption, p-platoon, a-isolation

r = rolling resistance, dz/ds = road gradient

Wt, S, U, ρ = weight, area, velocity, air density

provide a predictive model of use to the trucking industry4
Provide a predictive model of use to the trucking industry
  • Infer drag changes from changes in fuel consumption for operating platoon.
  • Compare field measurements with our wind tunnel measurements for two close following trucks.
  • Evaluate and resolve inconsistencies.
slide5

The drag of a single body with and without rounded vertical edges

W: H: L (w/attachment)

1: 1.4: 4.2 (4.5)

W: Ground Clearance

1: 0.28

CD = 0.94 .02

U = 26 m/s

Re = UW/ = 267,000

Blockage corrections based

upon local q derived from

wall-static pressure

CD = 0.51 .01

slide6

Drag versus separation

BLUNT-BLUNT

BLUNT-ROUNDED

ROUNDED-ROUNDED

ROUNDED-BLUNT

slide8

No less savings

Bonnet & Fritz

field test

No greater savings

Total drag summary

BLUNT - ROUNDED

ROUNDED - ROUNDED

BLUNT - BLUNT

ROUNDED - BLUNT

work effort next 9 months
Work effort next 9 months
  • Acquire additional data from single truck runs, and evaluate data quality. Assist as needed. Be available for wind, temperature measurement. (0-4 months)
  • Acquire data for platoon of trucks, and evaluate data quality. Record wind, temperature. Input data into our most recent display program. (4-9 months)
  • Continue to improve animated display. (0-9 months)
  • Other suggestions. Animation schemes welcome.
ad