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Title:
AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2008215554
Kind Code:
A
Abstract:

To provide an automatic transmission capable of controlling a shift in response to half neutral positions of a shift drum.

The half neutral positions PN2, PN3 and PN4 for temporarily reducing its rotating speed when rotating the shift drum 44, are arranged in the middle of mutual predetermined rotary positions P1-2, P2-3, P3-4 and P4-5 of the shift drum 44. The shift drum 44 is provided with a shift position sensor 70 capable of detecting predetermined rotary positions (including PN and PR) and the half neutral positions. The shift drum 44 is driven by an electric motor 48. A control part 100 is constituted so as to rotate the shift drum 44 to the predetermined rotary position corresponding to a shift stage in the shift-up direction or the shift-down direction, when the shift drum 44 stays in the half neutral position for a specific time, regardless of whether an engine 1 connected to a transmission TM rotates or not.


Inventors:
KOBAYASHI MASAKI
FUNAYORI YUSUKE
MIZUNO KINYA
KIKKO EIJI
Application Number:
JP2007000056274
Publication Date:
September 18, 2008
Filing Date:
March 06, 2007
Export Citation:
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Assignee:
HONDA MOTOR CO LTD
International Classes:
F16H61/00; F16H61/28; F16H63/18; F16H59/08; F16H61/688
Domestic Patent References:
JPH06207648A1994-07-26
JP2001324012A2001-11-22
JPS6254350A1987-03-10
JP2002357267A2002-12-13
JP2000291796A2000-10-20
JP2001140668A2001-05-22
JP2006090405A2006-04-06
JP2006170236A2006-06-29
JP2005030549A2005-02-03
JPH1182709A1999-03-26
JP2001050389A2001-02-23
Attorney, Agent or Firm:
田中 香樹
平木 道人
田邉 壽二