Toyota Camry Hybrid AHV40 Manual page 11

JSYSTEM OPERATION
1. General
D The THS II uses two sources of motive force, the engine and MG2, and uses MG1 as a generator. The
system optimally combines these forces in accordance with the various driving conditions.
D The THS ECU constantly monitors the SOC condition, the HV battery temperature, the coolant
temperature, and the electrical load condition. If any one of the monitored items fails to satisfy the
requirements when the READY indicator is ON and the shift lever is in the "P" position, or the vehicle
is driven in reverse, the THS ECU to starts the engine to drive MG1, and then charges the HV battery.
D The THS II drives the vehicle by optimally combining the operations of the engine, MG1, and MG2 in
accordance with the driving conditions listed below.
The vehicle conditions listed below are examples of typical vehicle running conditions.
Vehicle
Speed
(A) (B) (C)
(A): READY ON State
(B): Starting with MG2 (See Page TH-13)
(C): Running with MG2 and Engine (See Page TH-14)
(D): During Low Load and Constant-Speed Cruising (See Page TH-15)
(E): During Full Throttle Acceleration (See Page TH-16)
(F): During Deceleration Driving (See Page TH-17)
(G): During Reverse Driving (See Page TH-18)
THS II (TOYOTA HYBRID SYSTEM II)
(D) (E)
Flat Road
Driving Condition
(G)
(F)
Downhill Flat
Road Road
TH-11
Time
02DTH85Y