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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2016/181482
Kind Code:
The present invention provides a two-valve engine in which fuel economy can be improved while also suppressing combustion noise. This two-valve engine includes: a crankshaft; a rolling bearing; a piston part; a cylinder part including a cylinder head that has one intake port and discharge port, and a cylinder body that has a cylinder bore, said cylinder part forming a combustion chamber together with the piston part; a fuel injection part; and an ignition part provided to one area among two areas defined by dividing the combustion chamber using a straight line passing through the center of the intake port and the center of the discharge port. The combustion chamber has a non-squish area in at least some of the outer periphery of the combustion chamber. When viewed in the center axial direction of the cylinder bore, an intake passage is provided such that the non-squish area and an area in which the ignition part is not disposed are placed above a straight line that is an extension of the center axis of the intake passage from the center of the intake port.

TANOKURA, Hayato (2500 Shingai Iwata-sh, Shizuoka 01, 〒4388501, JP)
SUZUKI, Minoru (2500 Shingai Iwata-sh, Shizuoka 01, 〒4388501, JP)
ITO, Masaki (2500 Shingai Iwata-sh, Shizuoka 01, 〒4388501, JP)
IWAKI, Yohei (2500 Shingai Iwata-sh, Shizuoka 01, 〒4388501, JP)
Application Number:
Publication Date:
November 17, 2016
Filing Date:
May 12, 2015
Export Citation:
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YAMAHA HATSUDOKI KABUSHIKI KAISHA (2500 Shingai, Iwata-shi Shizuoka, 01, 〒4388501, JP)
International Classes:
F02F1/42; F02B23/08; F02B31/00; F02F3/26
Foreign References:
Other References:
See also references of EP 3263879A4
Attorney, Agent or Firm:
TASS MEISTER PATENT FIRM (Noble Court Hirakawa-cho 506, 4-13 Hirakawa-cho 2-chome, Chiyoda-k, Tokyo 93, 〒1020093, JP)
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