Title:
ENGINE UNIT AND TWO-WHEELED MOTOR VEHICLE WITH SAME
Document Type and Number:
WIPO Patent Application WO/2011/132432
Kind Code:
A1
Abstract:
Disclosed is an engine unit wherein a more compact multi-stage transmission can be achieved even when the engine unit comprises a plurality of clutches. A drive unit case (920) in this engine unit is provided with a crank shaft (60) disposed in the left-right direction of the vehicle and a drive shaft (73) and a second main shaft (72) that are parallel to the crank shaft (60). In addition, a transmission shaft (79) is disposed parallel to the drive shaft (73) and transmits rotational power, which has been transmitted via a middle gear (76), to a propeller shaft (65). A second clutch (75), which transmits rotational power from the crank shaft (60) to the second main shaft (72), is connected freely detachably to an end (72a) of one side of the second main shaft (72) which protrudes from a drive unit case (920) more than the end of one side of the drive shaft (73), at a position that overlaps with at least one section of the middle gear (76) on the side of the shaft direction of the drive shaft (73).
Inventors:
SAITOH, Tetsushi (())
斎藤哲史 (())
斎藤哲史 (())
Application Number:
JP2011/002365
Publication Date:
October 27, 2011
Filing Date:
April 22, 2011
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA (2500, Shingai Iwata-sh, Shizuoka 01, 〒4388501, JP)
ヤマハ発動機株式会社 (〒01 静岡県磐田市新貝２５００番地 Shizuoka, 〒4388501, JP)
SAITOH, Tetsushi (())
ヤマハ発動機株式会社 (〒01 静岡県磐田市新貝２５００番地 Shizuoka, 〒4388501, JP)
SAITOH, Tetsushi (())
International Classes:
F16H3/093; B62M11/06
Attorney, Agent or Firm:
WASHIDA, Kimihito (8th Floor, Shinjuku First West Bldg.1-23-7, Nishi-Shinjuku, Shinjuku-k, Tokyo 23, 〒1600023, JP)
Claims:
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