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:
a) The fault tree diagram that specifies the main components in series and parallel during normal
driving condition. (6 marks)
b) The fault tree diagram under acceleration condition. (9 marks)

Answer 1

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