Title:
INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2020/026565
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an internal combustion engine in which engine torque in both low-speed ranges and high-speed ranges can be improved through a comparatively simple and inexpensive configuration. An internal combustion engine (20) comprises a dividing wall (5B) that partitions at least part of an air intake passage (6) upstream of a throttle valve (7) into a first passage (51) and a second passage (52) which are parallel to each other, and an opening/closing valve (9) disposed inside the second passage (52). A flow channel length A1 of the first passage (51) is greater than a flow channel length B between a downstream end (8a) of the dividing wall (5B) of the air intake passage (6) and a valve shaft (71) of the throttle valve (7).
Inventors:
YOSHIDA TAKUMORI (JP)
FUKUMOTO RYOSUKE (JP)
HIRANO ATSUSHI (JP)
FUKUMOTO RYOSUKE (JP)
HIRANO ATSUSHI (JP)
Application Number:
PCT/JP2019/020134
Publication Date:
February 06, 2020
Filing Date:
May 21, 2019
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F02B27/02; F02D9/10; F02M35/10; F02M35/108
Foreign References:
| JP2002256873A | 2002-09-11 | |||
| JPS614821A | 1986-01-10 | |||
| JPH0250128U | 1990-04-09 | |||
| JPH0383329U | 1991-08-23 | |||
| JPH0166431U | 1989-04-27 | |||
| JP2004100458A | 2004-04-02 | |||
| EP2112354A1 | 2009-10-28 | |||
| JPH045430A | 1992-01-09 | |||
| JP2009162080A | 2009-07-23 |
Other References:
See also references of EP 3832084A4
Attorney, Agent or Firm:
GOTOH Takashi (JP)
Download PDF: