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Home >> Hyundai >> 2017 >> Sonata Plug-In Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid Control System (PHEV) >> Description and Operation >> Description >> Notes

Description and Operation: Description: Notes

The HCU (Hybrid Control Unit) controls whole hybrid systems and is connected with each control modules (ECM, TCM, MCU, BMS ECU etc.) by CAN interface. In addition this system uses the brake switch and Clutch Pressure Sensor (CPS) signals for controlling the hybrid system.

NOTE: CAN interface is divided into hybrid and chassis CAN lines.
Fig 1: Hybrid Control Unit Process Chart
G11654712Courtesy of HYUNDAI MOTOR AMERICA

The HCU controls power & torque distribution of the engine and motor, regenerative brake, and fail-safe mode based on the vehicle information, driver's demand, engine information and high voltage battery information.

Fig 2: Hybrid Control Unit Working Flow Chart
G11654713Courtesy of HYUNDAI MOTOR AMERICA