Hybrid Control System

P112 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM:

SYSTEM DIAGRAM






























SYSTEM DESCRIPTION

1. GENERAL
The THS-II control system consists of the following controls.










2. BASIC OPERATION
(a) This system controls the following modes in order to achieve the most efficient operations to match the driving conditions:
(1) Supply of electrical power from the HV battery to MG2 provides force to drive the wheels.




(2) While the wheels are being driven by the engine via the planetary gear, MG1 is rotated by the engine via the planetary gears, in order to supply the generated electricity to MG2.








(3) MG1 is rotated by the engine via the planetary gear, in order to charge the HV battery.
(4) When the vehicle is decelerating, kinetic energy from the wheels is recovered and converted into electrical energy and used to recharge the HV battery by means of MG2.





(b) The HV control ECU switches between these modes ((1), (2), (3), (1) + (2) + (3), or (4)) according to the driving condition. However, when the SOC (State of Charge) of the HV battery is low, the HV battery is charged by the engine by turning MG1.
As a result, it achieves far greater fuel economy compared to conventional gasoline engine vehicles, at a reduced level of exhaust gas emissions. Furthermore, this revolutionary powertrain has eliminated the constraints that are associated with electric vehicles (such as their short cruising range or their reliance on external recharging units).
3. SYSTEM DIAGRAM





4. FUNCTION OF MAIN COMPONENTS





HINT: *: Only on model with Enhanced VSC System