Hybrid powertrain and method of controlling same

A method of controlling a hybrid powertrain on a vehicle, wherein the hybrid powertrain has an engine and a motor/generator, the method comprising:

• determining vehicle operating parameters;
• establishing various operating modes of the powertrain by controlling, via at least one electronic controller, the engine, the motor/generator, a starter mechanism, at least one actuator, and a first switching device based at least partially on the vehicle operating parameters;
• wherein the vehicle operating parameters include at least one of:
• a parameter of the first energy storage device, a parameter of the control system, a parameter of the motor/generator, and a parameter of said at least one actuator;
• wherein the various operating modes include an operating mode in which the first switching device establishes electrical power flow between the first energy storage device and the motor/generator;
• wherein a driving connection is established between the crankshaft and the motor/generator through a belt drive train operatively connectable to a crankshaft of the engine and to the motor/generator;
• wherein the starter mechanism selectively establishes a driving connection to the crankshaft through the gear train separately from the belt drive train;
• and
• wherein said at least one actuator is activatable to establish the driving connection between the engine and the motor/generator via the gear train.

A method of controlling a hybrid powertrain on a vehicle, wherein the hybrid powertrain has an engine and a motor/generator, the method comprising:

• determining vehicle operating parameters;
• establishing various operating modes of the hybrid powertrain by controlling, via at least one electronic controller, the engine, the motor/generator, a starter mechanism, at least one actuator, and a first switching device based at least partially on the vehicle operating parameters;
• wherein the vehicle operating parameters include a capacity to restart the engine of at least one of the first energy storage device, said at least one electronic controller, the motor/generator, the starter mechanism, and said at least one actuator;
• wherein the various operating modes include an operating mode in which the first switching device establishes electrical power flow between the first energy storage device and the motor/generator;
• wherein a driving connection is established between the crankshaft and the motor/generator through a belt drive train operatively connectable to a crankshaft of the engine and to the motor/generator;
• and
• wherein the starter mechanism selectively establishes a driving connection to the crankshaft through the gear train separately from the belt drive train;
• wherein said at least one actuator is activatable to establish the driving connection between the engine and the motor/generator via the gear train.