Design Characteristics of Hybrid Vehicles with Road Test Results from Several Prototypes
Published November 11, 1985 by IATO in Indonesia
Annotation ability available
The utilisation of a hybrid vehicle concept enables the vehicle to be designed for specific traffic situations. Automobiles and medium to light commercial vehicles operate predominantly in suburban traffic where stop/start driving situations use large quantities of fuel because of the continuous conversion of engine power to kinetic energy and its subsequent absorption in the braking system. In addition, most vehicles operated in the suburban environment are powered by spark ignition engines. Thus energy storage or a continuously variable transmission would enable the engine to be operated at or near the peak efficiency, so increasing the fuel economy of the vehicle significantly.
At the other end of the spectrum of operating conditions, i.e. highway speed driving, there is little to be gained by carrying energy storage elements on automobiles and buses. However with the advent of very low drag, articulated vehicles, energy storage on a 40 tonne semi-trailer, to help supply some potential energy for hill climbing and to absorb the kinetic energy on downhill running, is an attractive proposition.
The paper describes the context in which any hybrid vehicle might have an application either to save fuel, reduce emissions, improve performance, reduce noise or improve drive-ability. The paper also describes the experience with the design of five vehicles in the Department of Mechanical Engineering, two of which have been extensively road tested and two of which are currently undergoing road tests.
CitationBullock, K., "Design Characteristics of Hybrid Vehicles with Road Test Results from Several Prototypes," SAE Technical Paper 852276, 1985.
- Bullock, K.J. (1980) “Hybrid Gasoline-Electric Automobiles”. The Engineering Conference, Adelaide, April, 1980, I.E.Aust.
- Bullock, K.J. (1982) “Driving Cycles”, Joint SAE/ARRB 2nd Conference on Traffic Energy and Emissions, Melbourne, May, 1982.
- Bullock, R.M. (1985) “Private Communications”, Dept. Mech. Eng. University of Queensland, June, 1985.
- Dunn, H.S. et al (1972) “High pressure hydraulic hybrid with regenerative braking”, SAE 729145
- Easingwood-Wilson et al (1977) “An instrumented car to analyse energy consumption on the road”. Transport and Road Research Laboratory Report 787, 1978.
- Gilmore, D.B. & Bullock, K.J. (1982) “An on-road evaluation of a 1500 kg multipurpose hybrid vehicle with trimodal energy storage”. Proceedings XIX International FISITA Congress. Society of Automotive Engineers, Melbourne, 1982.
- Gilmore, D.B., Bullock, K.J., Webb, I.R. and Vint, M. (1984). “Fuel Efficient Internal Combustion Engine-Electric Urban Transport Vehicles”, ISATA Congress, Italy, Sept., 1984.
- Henderson, A. (1985) “Private Communications”. Dept. Mech. Eng. University of Queensland, June, 1985.
- McConachie, P.J. (1981) “Electric Vehicle Performance Requirements for Traffic Compatibility” Motor Vehicle Fuel Conservation Workshop, Dept. of National Development and Energy.
- Stringer, I.A. & Bullock, K.J. (1984) “A Regenerative Road Load Simulation”, Paper 84 5115, XX FISITA Congress, Vienna May 1984.
- Watson, H.C., (1978) “The prediction of emissions and fuel consumption in real driving conditions”. SAE, I.Mech.E., I.E.Aust. Melbourne, Oct. 1978.
- Wouk, V. (1976) “An Experimental ICE/Battery-Electric Hybrid with low Emissions and Low Fuel Consumption Capability”, SAE Congress Feb. 1976, Detroit, Paper 760123.