Question

During normal driving conditions (less than 100km/h), an engine runs and provides power. The mechanical power from the engine is divided by the planetary gear unit. Some of the power drives Motor Generator 2 (MG2), and some of the power drives the wheels directly. During normal driving conditions, Motor Generator 1 (MG1) runs in the same direction to generate electrical power for MG2. MG2 starts and runs to provide an electric assist as a motor. Determine:

The fault tree diagram under acceleration condition.                                                           (9 marks)

Answer 1

Solution:

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Sudden Accelarutien Power source Wheels power foom HV Battery Extore power power from Engine smooth response serving as a motor Power splitting device Planetary Gear HV Battery PCU MG2 Reduction Gear engine Power Isplit fig: : Falelt tree ferr sudden Accelaration: Mechanical Power Mechanicat system Regenerating Electric power Elechy power Generator Motor Reduction Geay Motor Generator MEL power control unit RD