AIR INTAKE STRUCTURE FOR INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO/2019/008900

A1

Provided is an air intake structure for an internal combustion engine, with which it is possible to intensify a tumble vortex and simplify the configuration by introducing intake air to a tumble flow path without the provision of a tumble control valve. Disclosed is an air intake structure for an internal combustion engine, the air intake structure comprising a throttle valve 75 inside a throttle body 7 having an air intake path 70 which constitutes a portion of an air intake flow path 80, the air intake flow path being partitioned into a tumble flow path 80A and a main flow path 80B by a partitioning part 81 downstream from the throttle valve. The throttle valve is a butterfly valve that is rotatably supported inside the throttle body by a throttle valve shaft 76 oriented so as to perpendicularly intersect with the center axis X of the air intake path. A valve body 77 of the throttle valve includes a one-end-side half body 77A and an other-end-side half body 77B by being bisected with the throttle valve shaft therebetween. The cross-sectional area of the main flow path is formed so as to be greater than the cross-sectional area of the tumble flow path.

JP2022071404	AIR SUPPLY DEVICE
WO/1996/035045	STRATIFIED CHARGE ENGINE
JP2018150815	INTAKE SYSTEM OF INTERNAL COMBUSTION ENGINE

NAKAMURA YOHEI (JP)
IMAMURA TAKANORI (JP)
INOUE YOSUKE (JP)

PCT/JP2018/018361

January 10, 2019

May 11, 2018

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HONDA MOTOR CO LTD (JP)

F02B31/04; F02D9/10; F02F1/42; F02M35/104; F02M35/108

WO2013146703A1

2013-10-03

JP2009293381A	2009-12-17
JP2013213409A	2013-10-17
JP2010090849A	2010-04-22

See also references of EP 3650670A4

KAMIZAWA, Junko et al. (JP)

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