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US 2006/0231339 A1Published application
Hydraulic circuit device and hybrid drive system using that hydraulic circuit device
AssigneesAisin Aw Co., Ltd., Toyota Jidosha Kabushiki Kaisha
InventorsKazuhito Enomoto, Kiyotomo Mirua, Satoru Wakuta, Kazuhisa Ozaki, Nobuyuki Nagashima, Masato Fujikawa, Tomoyuki Maruyama, Masatoshi Adachi
Life of this patent
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Abstract
Drain holes are arranged in positions offset from valve holes of a valve body. The drain holes have a long chimney-shaped space such that even if insulation material, that has peeled off of an electric motor, is suspended in oil, it is less likely to enter drain chambers through the drain holes.
Claims20
A hydraulic circuit device, comprising:
- an oil pan at a lower portion of a case;
- and
- a valve body arranged in the oil pan, comprising:
- a valve hole;
- a drain port;
- a drain chamber, fluidly connected to the drain port and;
- a drain hole fluidly connecting the drain chamber with an external portion of the valve body, wherein the drain hole is arranged offset from the valve hole.
4 more elements
A valve body arranged in an oil pan, as part of a hydraulic circuit device, at a lower portion of a case, the valve body comprising:
- at least one drain chamber fluidly connected to a drain port of the valve, each drain chamber associated with a valve hole to which a valve is attached;
- and
- a drain hole fluidly connected with at least one drain chamber, wherein the drain hole is arranged in a position offset from the valve hole.
Dependencies are inferred from the claim text.