MODELLING URBAN VEHICLE MOTION TO IMPROVE PERFORMANCE
A computer simulation method is presented that partially replaces road testing of engines and other components of the power-drive system of urban buses. To calibrate the model, experiments were performed in Warsaw (Poland) traffic using a digital data acquisition system. Analysis of the recorded data showed that two types of vehicle runs were representative of urban traffic; models of these runs were developed and verified. Specific performance criteria were selected for optimum matching of engines and power-transmission systems. A computational procedure is described, based on the models and criteria. Results of applying the simulation method to improving fuel economy and dynamics of a city bus are given. It was found that turbocharging improves both dynamics and fuel consumption more than increasing the number of cylinders. For both free-run and car-following types of bus operation, there are values of axle ratio that maximize the mean speed of the time-minimal run and minimize mean headway between the bus and its leader. For free motion, there is a range of axle ratios that affects vehicle dynamics only slightly but substantially affects fuel consumption. In car-following runs, fuel consumption is greatly affected by the driver's control actions.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00375497
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Corporate Authors:
Simulation Councils, Incorporated
Box 2228
La Jolla, CA United States 92037 -
Authors:
- Mazurek, S
- Rudzinska, K
- Publication Date: 1980-4
Media Info
- Features: References;
- Pagination: p. 117-124
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Serial:
- Simulation
- Volume: 34
- Issue Number: 4
- Publisher: Simulation Councils, Incorporated
- ISSN: 0037-5497
- EISSN: 1741-3133
- Serial URL: http://sim.sagepub.com/
Subject/Index Terms
- TRT Terms: Bus drivers; Buses; Fuel conservation; Fuel consumption; Simulation; Turbochargers; Urban areas; Vehicle dynamics
- Old TRIS Terms: Axle ratio; Turbocharging
- Subject Areas: Energy; Public Transportation; Safety and Human Factors;
Filing Info
- Accession Number: 00392298
- Record Type: Publication
- Source Agency: National Highway Traffic Safety Administration
- Report/Paper Numbers: HS-028 910
- Files: HSL, USDOT
- Created Date: Feb 28 1985 12:00AM