This is the second of four reports prepared under Project 3---Propulsion System Technology---of the overall Bus Technology Program. The purpose of Project 3 is to determine which propulsion systems are feasible for use in TRANSBUS and to select systems suitable for alternative use during the life span of this model bus. The objective of this report is to furnish a rational basis and numerical procedure for assessing the power plant requirements of TRANSBUS, an advanced technology 40-foot urban transit motor coach. In this report power requirements for propulsion and accessory service of TRANSBUS are evaluated. Performance goals and specifications for TRANSBUS are reviewed, and those that influence the power requirements are identified. A range of vehicular and operational factors appropriate to the transit coach is considered. Using these factors, a likely model is assumed and its power requirements computed. The assumed parameters are varied within a reasonable range of values. These charts may be used to refine the power estimate as more complete data become available for selected vehicle components. Sensitivity of power requirements to each of the significant factors is analyzed in a series of charts. Typical power requirements on representative operating profile segments are also presented. The charts provide a frame of reference for the evaluation of the TRANSBUS prototype vehicle performance and for the consideration of alternative and advanced power plants. This report concludes that the estimated minimum power requirements for the standard specification TRANSBUS is 264 horsepower. This is compatible with the industry standard V-8 engine.
Transit Bus Propulsion Systems Propulsion Requirements
1978
72 pages
Report
No indication
English
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