Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Operation Algorithm for a Parallel Hybrid Electric Vehicle with a Relatively Small Electric Motor

  • Published : 2004.01.01
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Abstract

In this paper, operation algorithms for a parallel HEV equipped with a relatively small motor are investigated. For the HEV, the power assist and the equivalent fuel algorithms are proposed. In the power assist algorithm, an electric motor is used to assist the engine which provides the primary power source. Tn the equivalent fuel algorithm, the electric energy stored in the battery is considered to be an equivalent fuel, and an equivalent brake specific fuel consumption for the electric energy is proposed. From the equivalent fuel algorithm, distribution of the engine power and the motor power is determined to minimize the fuel consumption for a given battery state of charge (SOC) and a required vehicle power. It is found from the simulation results that the fuel economy and the final battery SOC depend on the motor discharge energy and it is the best way to charge the battery only by the regenerative braking, not by the engine to improve the overall fuel efficiency of the HEV with the relatively small motor.

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References

  1. Anderson, C. and Pettit, E., 1995, 'The Effect of APU Characteristics on the Design of Hybrid Control Strategies for Hybrid Electric Vehicles,' SAE 950493
  2. Cho, S. T., Jeon, S. I., Gong, J. H., Park, Y. I. and Lee, J. M., 2001, 'Fuel Economy Optimization of Hybrid Vehicle Using Single Performance Index,' KSME 01S249
  3. Choi, D. H. and Kim, H. S., 2002, 'Evaluation of Fuel Economy for a Parallel Hybrid Electric Vehicle,' KSME Int. Journal, Vol. 16, pp. 1287-1295
  4. Kim, C. H., Namgoong, E., Lee, S. C., Kim, T. C. and Kim, H. S., 1999, 'Fuel Economy Optimization for Parallel Hybrid Vehicles with CVT,' SAE 1999-01-1148
  5. Kim, H. S. and Kim, T. C., 2000, 'Low Level Control of Metal Belt CVT Considering Shift Dynamics and Ratio Valve On-Off Charateristics,' KSME Int. Journal, Vol. 14, pp. 645-654
  6. Mueller, F., Lueck, P. and Koehle, S., 2000, 'Hybrid Electric Vehicles-Discussion of Different Configurations,' GPC 2000, pp. 54-63
  7. Szumanowski, A., 2000, 'Fundamentals of Hybrid Vehicle Drives,' Warsaw-Radom 2000, pp. 35-84
  8. Trigui, R., Badin, F. and Jeanneret, B., 2003, 'Hybrid Light Duty Vehicles Evaluation Program,' Int. Journal of Automative Technology, Vol. 4, No. 2, pp. 65-75