Power transmission system, and control method of power transmission system that favorably suppress unusual sound generated from a switching sleeve
US10767760B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power transmission system include a transfer case including an input shaft, an output shaft, a planetary gear device including a first rotary element, a second rotary element, and a third rotary element, and a HIGH-LOW switching mechanism including a switching sleeve configured to selectively couple the output shaft to the first rotary element and the second rotary element, an electric motor coupled to one of the first rotary element and the second rotary element, and an electronic control unit configured to control the rotational speed of the electric motor, during switching operation of the HIGH-LOW switching mechanism while a vehicle is stopped, such that the rotational speed of the input shaft becomes substantially equal to zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.