US 10,864,813 B2 · Back-to-back selectable one-way clutches for engine disconnect devices of motor vehicle powertrains

Abstract

Presented are dual-clutch engine disconnect devices, methods for making/using such disconnect devices, and motor vehicles equipped with such disconnect devices. An engine disconnect device for a vehicle includes a first one-way clutch (OWC) with concentric inner and outer races and torque elements interposed between and transferring torque across these races in a first direction. The first outer race rigidly attaches to a damper plate for common rotation therewith, and the first inner race rigidly attaches to a pump cover of a torque converter for common rotation therewith. A second OWC, which concentrically aligns within the first OWC, includes concentric inner and outer races with torque elements interposed between and transferring torque across these races in a second direction. The second outer race is splined to the first inner race for common rotation with the pump cover. The second inner race rigidly attaches to the damper plate for common rotation therewith.

Claims20

Dependent claims

An engine disconnect device for a motor vehicle, the motor vehicle including an engine, a flexplate connected to the engine, a torsional damper plate connected to the flexplate, and a torque converter (TC) assembly with a pump cover, the engine disconnect device comprising:

a first one-way clutch (OWC) including first inner and outer races with a first plurality of torque elements interposed between and transferring torque across the first inner and outer races in a first direction, the first outer or inner race being configured to attach to the torsional damper plate for common rotation therewith, and the first inner or outer race being configured to attach to the pump cover of the TC assembly for common rotation therewith;
and
a second OWC coaxially aligned with the first OWC, the second OWC including second inner and outer races and a second plurality of torque elements interposed between and transferring torque across the second inner and outer races in a second direction, the second outer or inner race being configured to attach to the pump cover for common rotation with the first inner race and pump cover, and the second inner or outer race being configured to attach to the torsional damper plate for common rotation therewith.

A method of assembling an engine disconnect device for a motor vehicle with an engine, a flexplate connected to the engine, a torsional damper plate connected to the flexplate, and a torque converter (TC) assembly with a pump cover, the method comprising:

providing a first one-way clutch (OWC) with first inner and outer races and a first plurality of torque elements interposed between and transferring torque across the first inner and outer races, the first outer or inner race being configured to attach to the torsional damper plate for common rotation therewith, and the first inner or outer race being configured to attach to the pump cover of the TC assembly for common rotation therewith;
and
mounting a second OWC coaxial with the first OWC, the second OWC including second inner and outer races and a second plurality of torque elements interposed between and transferring torque across the second inner and outer races, the second outer or inner race being configured to attach to the pump cover for common rotation with the pump cover, and the second inner or outer race being configured to attach to the torsional damper plate for common rotation therewith.

Dependencies are inferred from the claim text.

Back-to-back selectable one-way clutches for engine disconnect devices of motor vehicle powertrains

Life of this patent

Back-to-back selectable one-way clutches for engine disconnect devices of motor vehicle powertrains

Life of this patent

Abstract

Claims20