Motive power device

Abstract

Provided is a motive power device that can limit loss and is designed for reduction of device size and improved mountability. In the motive power device (T), the rotation rates of the third - first sun gears (S3 to S1) and the carrier member (111) are collinear with each other, and in a nomograph representing the relationships of the rotation rates, the third to first sun gears and the carrier member line up in the order. The third sun gear (S3) and the carrier member (111) are respectively connected to a first and second torque-generating devices (113, 114) that are capable of generating positive torque and negative torque, and the second and the first sun gears (S2, S1) are respectively connected to one and the other of two rotation shafts.

Description

technical field [0001] The present invention relates to a power unit that drives two rotating shafts configured to be differentially rotatable relative to each other to move a moving device. Background technique [0002] Conventionally, as such a power plant, for example, a configuration disclosed in Patent Document 1 is known. This conventional power unit is applied to a four-wheeled vehicle and includes an internal combustion engine as a power source, a differential device that distributes the torque of the internal combustion engine to left and right output shafts, a rotatable planetary carrier member, and is supported by the planetary carrier member for rotation. Free triple pinion, hydraulic clutch for speed-up and speed-down. The left and right output shafts are respectively connected to the left and right drive wheels. Furthermore, the triple pinion gear is composed of a first pinion gear, a second pinion gear, and a third pinion gear having mutually different pitch...

AI Technical Summary

Problems solved by technology

Therefore, when a wet friction clutch is used as the clutch for speed-up and speed-down, a large drag loss will occur due to the shear resistance due to the viscosity of the lubricating oil.

[0011] Furthermore, when a hydraulic pump using an internal combustion engine as a power source is used to supply hydraulic pressure to hydraulic speed-up and deceleration clutches, the distribution control of the torque to the left and right output shafts will not be controlled during the operation of the internal combustion engine. , both drive the hydraulic pump all the time, so that the torque of the internal combustion engine is correspondingly wasted for nothing

In addition, since a spool, a solenoid, a filter, and the like are required for driving the clutches for increasing speed and speed reducing, the size of the device increases and the mountability decreases accordingly.

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