Oil supplying apparatus and method of controlling the same
US6386170B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Jun 7, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2312/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An engine output shaft drives an engine driven pumps The engine driven pressurizes oil. An accumulator accumulates the pressurized oil. An electric motor drives a motor driven pump. When the engine rotates at low speed, both the engine driven pump and the motor driven pump supply oil to an oil chamber of a belt type continuously variable transmission. If it is required to enlarge a capacity of the oil chamber quickly, the pressurized oil in the accumulator is supplied to the motor driven pump. The motor driven pump further pressurizes the pressurized oil in the accumulator and supplies it into the oil chamber. It is possible to supply a sufficient amount of oil to the continuously variable transmission. Additionally, since the system may be constructed by using a small type engine driven pump, it is possible to improve fuel efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.