Patent · US Expired

Method of controlling hydraulic pressure for engaging clutch in automatic transmission

US5752592A · kind A · utility

2Cited by
4References
2Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 8, 1996
Grant dateMay 19, 1998
Priority date
Expiry dateNov 8, 2016

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF16D2500/70406
  • WIPO fieldMechanical elements
  • WIPO sectorMechanical engineering

Abstract

A method of controlling hydraulic pressure necessary for engaging a clutch in automatic transmission comprises correcting a friction factor in accordance with the relationship between a face pressure of the clutch corresponding to hydraulic pressure as provisionally determined and the friction factor, and correcting hydraulic pressure in accordance with the friction factor as corrected.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.