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Patent Searching and Data


Title:
HYDRAULIC CONTROL UNIT FOR AUTOMATIC TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2010/038352
Kind Code:
A1
Abstract:
During normal operation, first, second, and fourth solenoid valves (S1, S2, S4) and various linear solenoid valves (SL1 through SL5) are controlled with a first command system by a first computer and normal automatic transmission function is controlled. Additionally, during a failure, a hydraulic control unit (20) produces a failsafe running mode by supplying oil pressure to the hydraulic servos (52, 53) of second and third clutches (C-2, C-3) to form seven forward speeds, and a failsafe shutdown mode in which oil pressure to all hydraulic servos is interrupted. After a failure occurs in the first command system, a third solenoid valve (S3) is controlled with a second command system by a second computer to switch between the failsafe running mode and the failsafe shutdown mode.

Inventors:
YOSHIOKA, Yuhei (10, Takane, Fujii-cho, Anjo-sh, Aichi 92, 〒4441192, JP)
吉岡裕平 (〒92 愛知県安城市藤井町高根10番地 アイシン・エィ・ダブリュ株式会社内 Aichi, 〒4441192, JP)
NODA, Kazuyuki (10, Takane, Fujii-cho, Anjo-sh, Aichi 92, 〒4441192, JP)
野田和幸 (〒92 愛知県安城市藤井町高根10番地 アイシン・エィ・ダブリュ株式会社内 Aichi, 〒4441192, JP)
Application Number:
JP2009/004062
Publication Date:
April 08, 2010
Filing Date:
August 24, 2009
Export Citation:
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Assignee:
AISIN AW CO., LTD. (10 Takane, Fujii-cho Anjo-sh, Aichi 92, 〒4441192, JP)
アイシン・エィ・ダブリュ株式会社 (〒92 愛知県安城市藤井町高根10番地 Aichi, 〒4441192, JP)
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町1番地 Aichi, 〒4718571, JP)
YOSHIOKA, Yuhei (10, Takane, Fujii-cho, Anjo-sh, Aichi 92, 〒4441192, JP)
吉岡裕平 (〒92 愛知県安城市藤井町高根10番地 アイシン・エィ・ダブリュ株式会社内 Aichi, 〒4441192, JP)
International Classes:
F16H61/12; F16H61/00; F16H61/68; F16H59/68; F16H61/684; F16H61/686
Foreign References:
JP2007177932A2007-07-12
JPH05215228A1993-08-24
JPH11230328A1999-08-27
Attorney, Agent or Firm:
CHIKASHIMA, Kazuo (2F Omodaka Building, 9-7 Shibaura 1-chom, Minato-ku Tokyo 23, 〒1050023, JP)
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