Differential unit with means for mixing air into the hydraulic actuator
US5709627A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Mar 27, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2071
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A differential unit having a speed-sensitive-type differential limiting function is capable of moderating the differential limiting force to maintain the controllability and stability of a vehicle. The differential unit according to the present invention includes a differential case to be rotated by drive force of an engine, a differential mechanism for distributing rotations of the differential case to a pair of output shafts, a frictional clutch for limiting the differential of the differential mechanism, a hydraulic actuator for clutching the frictional clutch, an oil pump which receives differential torque of the differential mechanism so as to be driven to operate the hydraulic actuator, control valves for introducing air to the oil suction portion of the oil pump, and a controller for opening or closing the control valve to correspond to a condition under which a vehicle is driven.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.