Integrated hydraulic hybrid drivetrain system

摘要

A hybrid drivetrain for a motor vehicle includes an automated mechanical transmission (AMT) having an output shaft. The drivetrain includes an alternative energy source including a motor and an energy storage unit and two torque transfer arrangements. The first transfer arrangement is separate from engageable gear sets of the AMT for transferring torque from the output shaft to a motor when the energy storage unit is being charged and for transferring torque from the motor to the output shaft when the energy storage unit is being discharged. Additionally, an alternative energy source clutch for selectively coupling the first torque transfer arrangement to the output shaft is included. The second torque transfer arrangement is for transferring torque from the output shaft to a driven axle of the motor vehicle. At least one of the first and second torque transfer arrangements has different first and second torque transfer ratios.

主权项

1. A hybrid drivetrain for a motor vehicle, the hybrid drivetrain comprising:
an automated mechanical transmission having an input shaft, an output shaft, and a counter shaft, the automated mechanical transmission also including a first gear disposed between the input shaft and the countershaft and at least two selectively engageable gear sets disposed between the countershaft and the output shaft; a master clutch for selectively coupling the input shaft of the automated mechanical transmission to a main power source so as to deliver power from the main power source to the hybrid drivetrain only when the master clutch couples the input shaft to the main power source; an alternative energy source including a motor and an energy storage unit, wherein the alternative energy source comprises only a single point of connection to the automated mechanical transmission; a first torque transfer arrangement separate from the engageable gear sets of the automated mechanical transmission for transferring torque from the output shaft of the automated mechanical transmission to the motor when the energy storage unit is being charged and for transferring torque from the motor to the output shaft of the automated mechanical transmission when the energy storage unit is being discharged, wherein the first torque transfer arrangement comprises the single point of connection between the alternative energy source and the automated mechanical transmission; an alternative energy source clutch for selectively coupling the first torque transfer arrangement to the output shaft of the automated mechanical transmission; and a second torque transfer arrangement for transferring torque from the output shaft of the automated mechanical transmission to a driven axle of the motor vehicle; at least one of the first and second torque transfer arrangements having first and second torque transfer ratios, the first and second torque transfer ratios being different from one another.