US 2020/0224754 A1 · PLANETARY DIFFERENTIAL DRIVE SYSTEM

Abstract

A differential drive system includes an electric motor for generating an electric motor torque and an input planetary gear-set operatively connected to the electric motor to receive the electric motor torque. The input planetary gear-set has first, second, and third members. The first member receives the electric motor torque, the second member provides a first input torque in a first rotational direction in response to the electric motor torque, and the third member provides a second input torque in a second rotational direction, opposite the first direction, in response to the electric motor torque. The system also includes a first output gear-set operatively connected to the input planetary gear-set, and providing a first output torque in response to the first input torque. The system additionally includes a second output gear-set operatively connected to the input planetary gear-set and providing a second output torque in response to the second input torque.

Claims22

Dependent claims

A differential drive system comprising:

an electric motor configured to generate an electric motor torque;
an input planetary gear-set operatively connected to the electric motor to receive the electric motor torque and having first, second, and third members, wherein:
the first member is configured to receive the electric motor torque;
the second member is configured to provide a first input torque in a first rotational direction in response to the electric motor torque;
and
the third member is configured to provide a second input torque in a second rotational direction, opposite the first rotational direction, in response to the electric motor torque;
a first output gear-set operatively connected to the input planetary gear-set, and configured to provide a first output torque in response to the first input torque;
and
a second output gear-set operatively connected to the input planetary gear-set and configured to provide a second output torque in response to the second input torque.

6 more elements

A motor vehicle comprising:

a first road wheel and a second road wheel;
a differential drive system configured to power the first and second road wheels, the system including:
an electric motor configured to generate an electric motor torque;
an input planetary gear-set operatively connected to the electric motor to receive the electric motor torque and having first, second, and third members;
wherein:
the first member is configured to receive the electric motor torque;
the second member is configured to provide a first input torque in a first rotational direction in response to the electric motor torque;
and
the third member is configured to provide a second input torque in a second rotational direction, opposite the first rotational direction, in response to the electric motor torque;
a first output gear-set operatively connected to the input planetary gear-set, and configured to provide a first output torque to the first road wheel in response to the first input torque;
and
a second output gear-set operatively connected to the input planetary gear-set and configured to provide a second output torque to the second road wheel in response to the second input torque.

9 more elements

Dependencies are inferred from the claim text.

Planetary differential drive system

Life of this patent

Planetary differential drive system

Life of this patent

Abstract

Claims22