System for preventing belt slip of belt-type continuously variable transmission
US7029410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Apr 5, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/708
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
CVT control unit of a belt CVT checks whether a reverse rotation of pulleys is generated. When the reverse rotation is generated, a PLpri torque capacity is calculated from a primary pressure Ppri, and this PLpri torque capacity is used as a torque limit value of a torque-down control of an engine control unit. An input torque to a transmission mechanism is compared with the PLpri torque capacity, and when the input torque exceeds the PLpri torque capacity, shortage of the PLpri torque capacity for the input torque is calculated. Then, this shortage is added to the input torque as a correction amount, and a line pressure is set on the basis of a result of this addition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.