Hybrid powertrain for vehicle

A vehicle comprising:

• a vehicle body;
• an engine mounted in the vehicle body;
• a first motor mounted in the vehicle body;
• a second motor mounted in the vehicle body;
• and
• a powertrain device mounted in the vehicle body, the powertrain device comprising:
• a first input shaft installed to always receive power from the engine;
• a second input shaft installed to always transfer the power to and from the first motor and parallel to the first input shaft;
• a third input shaft installed to always transfer the power to and from the second motor and parallel to the second input shaft;
• an output shaft mounted parallel to the third input shaft;
• a first selective mesh device configured to transmit the power from the second input shaft to the output shaft at multiple different gear ratios;
• a second selective mesh device configured to transmit the power from the third input shaft to the output shaft at the multiple different gear ratios;
• and
• a third selective mesh device configured to selectively transmit the power from the first input shaft to the second input shaft and the third input shaft.

A method of providing a hybrid powertrain for a vehicle, the method comprising:

• interlocking a first input shaft with an engine for a constant connection;
• interlocking a second input shaft with a first motor for a constant connection, the second input shaft being parallel to the first input shaft;
• interlocking a third input shaft with a second motor for a constant connection, the third input shaft being parallel to the second input shaft;
• mounting an output shaft parallel to the third input shaft;
• transmitting power from the second input shaft to the output shaft at multiple different gear ratios using a first selective mesh device;
• transmitting the power from the third input shaft to the output shaft at the multiple different gear ratios using a second selective mesh device;
• and
• transmitting the power from the first input shaft to the second input shaft and the third input shaft selectively using a third selective mesh device.