Back to results
US 2017/0282702 A1Published application
Hybrid transmission having fixed gear shift stage
OwnerEui Han KIMinventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to a hybrid transmission using an engine and two electric motors/generators together, wherein a planetary gear device comprising double planet gears, two sun gears and a ring gear, as a power splitter is used, and in addition, to a hybrid transmission in which one or more clutches and/or one or more brakes are combined to select a mechanical shift mode other than a hybrid mode and an electric drive mode.
Claims15
A transmission for a hybrid vehicle,
- the transmission including a first motor/generator, a second motor/generator, and a power splitter, and connected to an engine,
- wherein the first motor/generator serves mainly as a primary generator, and the second motor/generator serves mainly as an assistant power motor, wherein the power splitter includes:
- a dual planet gear, a first ring gear, a first sun gear, and a second sun gear;
- and
- a carrier for housing the dual planet gear, the first sun gear and the second sun gear,
- wherein the engine is connected to the first sun gear via a main shaft, and a rotational shaft of the first motor/generator is connected to the second sun gear,
- wherein a rotational shaft of the second motor/generator is connected to the first sun gear or integrally connected to the carrier,
- wherein the output shaft is integrally connected to the carrier of the power splitter,
- wherein the first ring gear meshes with one of the first and second planet gears, and the third brake is on the first ring gear,
- and wherein the first ring gear is configured to idly rotates without being applied with any reaction force other than when the third brake is engaged thereto.
7 more elements
Dependencies are inferred from the claim text.