Clutch control method
US10801562B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 15, 2019 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Jun 26, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/7082
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A clutch control method may include generating a current-hydraulic pressure model by obtaining an increasing slope of a measured hydraulic pressure which is applied to a clutch in accordance with an increase of a primary ramp current while applying the primary ramp current to a solenoid valve that controls hydraulic pressure to be supplied to the clutch; obtaining a difference between a virtual hydraulic pressure according to the current-hydraulic pressure model and a measured hydraulic pressure applied to the clutch for a secondary ramp current while applying the secondary ramp current to the solenoid valve after removing the primary ramp current; performing updating by learning a secondary ramp current, at which the difference between the virtual hydraulic pressure and the measured hydraulic pressure is maximum, as a Volumetric Kiss Point (VKP); and controlling the clutch on the basis of the learned VKP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.