Title:
車両用油圧機械式無段変速機
Document Type and Number:
Japanese Patent JP3974998
Kind Code:
B2
Abstract:
To moderate the efficiency of engine braking when it is applied while a continuously variable transmission produces a large transmission ratio. Such a continuously variable transmission is constituted by a hydraulic pump having an input rotary member connected to an internal combustion engine of a vehicle, a hydraulic motor having an output rotational axis connected to a driving wheel. The hydraulic pump and hydraulic motor are coupled via a first oil passageway, which has a low oil pressure during the normal load operation of the engine but has a high oil pressure during the reverse load operation of the engine, and a second oil passageway, which has a high oil pressure during the normal load operation but has a low pressure during the reverse load operation, thereby forming a closed oil passageway circuit. At least the hydraulic pump or the hydraulic motor has a variable capacity. A one-way clutch is interposed between an input rotary member and an output rotational axis in order to directly couple them as the output rotational axis rotates faster than the input rotary member during the reverse load operation.
Inventors:
Kazuhiro Yasuda
Tsutomu Hayashi
Tohru Iizuka
Hiroyuki Kikuchi
Tsutomu Hayashi
Tohru Iizuka
Hiroyuki Kikuchi
Application Number:
JP8753098A
Publication Date:
September 12, 2007
Filing Date:
March 31, 1998
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
F04B17/05; F04B1/20; F16H39/14; F16H43/00; F16H61/40; F16H61/42
Domestic Patent References:
| JP64012173A | ||||
| JP5079554A |
Attorney, Agent or Firm:
Ken Ochiai
Kazuaki Niki
Kazuaki Niki