Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Analysis of Powertrain Characteristics for Output Split Type Plug-in Hybrid Electric Vehicle

출력분기 기반 플러그인 하이브리드 전기자동차의 동력전달 시스템 특성 분석

  • Kim, Jeongmin (Department of Mechanical & Automotive Engineering, Andong National University)
  • 김정민 (안동대학교 기계자동차공학과)
  • Received : 2014.09.01
  • Accepted : 2014.10.23
  • Published : 2015.01.01
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Abstract

In this paper, powertrain of output split type plug-in hybrid electric vehicle is analyzed for the operation range of speed, torque, and power. First, it is assumed that the efficiency of motor is 100%. And, the speed and torque equations are derived based on the lever analogy. With the above equations, the simulations are performed for the powertrain of output split type plug-in hybrid electric vehicle. From the simulation results, it is found that the output torques of EV1 and series modes are larger than the EV2 and power split modes' ones. It means the EV1 and series modes can be used for the rapid acceleration. But the EV1 and series modes can be used only the velocity of under the 120 km/h. It is because the motor reaches its maximum speed when the velocity is over the 120 km/h for the EV1 and series modes. When the engine is turned on, the engine power is transmitted through the two motors. But, the power split mode shows the power split of engine at the output shaft, and it has the point of zero motor power. Thus, the transmission efficiency of the power split mode can be higher than the series mode's one, it the motor efficiency is considered.

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References

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