Title:
VEHICLE TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2015/107773
Kind Code:
A1
Abstract:
Provided is a vehicle transmission such that even if a second two-way valve (V2) is switched to mistakenly establish reverse mode while high speed mode is established and a second piston (49A, 49B, 49C) attempts to enter a left-shifted state with the oil pressure in a fourth oil chamber (C4) by releasing the oil pressure in a third oil chamber (C3) of a speed reduction output switching mechanism (23) by a path through a LOW supplying oil channel (L6) -> the second two-way valve (V2) -> an inhibiting oil channel (L5) -> a HI supplying oil channel (L3) -> a first two-way valve (V1) -> a low pressure oil channel (L2) -> an oil tank (55), the oil pressure for establishing the high speed mode is acting on the inhibiting oil channel (L5) so that the oil pressure in the third oil chamber (C3) and in the fourth oil chamber (C4) are in opposition, thereby preventing the establishment of the reverse mode. As no special valve is required to achieve this inhibiting functionality, an increase in the number of parts is avoided.
Inventors:
ICHIMURA YASUYUKI (JP)
Application Number:
PCT/JP2014/080876
Publication Date:
July 23, 2015
Filing Date:
November 21, 2014
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
F16H61/18; F16H37/02; F16H59/04; F16H61/00; F16H61/66
Domestic Patent References:
| WO2013175568A1 | 2013-11-28 |
Foreign References:
| JP2008208854A | 2008-09-11 | |||
| JP2000320630A | 2000-11-24 | |||
| DE4234629A1 | 1993-04-29 |
Attorney, Agent or Firm:
OCHIAI Takeshi et al. (JP)
Ochiai 健 (JP)
Ochiai 健 (JP)
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