Honda Motor Co., Ltd.

Takahiro Sano

Masahiro Kontani

Hiroaki Tsukui

Kazuhito Hotta

Shin Nishimura

Takaaki Shomura

Satoru Kubo

Teppei Maeda

Yoshinori Korogi

Hiroshi Tadokoro

Yasuhiro Matsui

Takuya Nakano

A rotary-type throttling device for an internal combustion engine includes an upstream auxiliary intake passageway formed in a throttle body and having an inlet port held in fluid communication with the atmosphere, and a downstream auxiliary intake passageway formed in a cylindrical valve body of a rotary valve and having an outlet port open at a downstream outer circumferential surface of the cylindrical valve body. The upstream auxiliary intake passageway and the downstream auxiliary intake passageway have a body-side joint fluid communication port and a valve-side joint fluid communication port formed in respective sliding surfaces of the throttle body and the cylindrical valve body and designed to overlap each other to keep the upstream and downstream auxiliary intake passageways and in fluid communication with each other. When the rotary valve is open, a main intake air stream passing through an intake passageway in the rotary valve flows smoothly for enhanced intake performance without being disturbed by an auxiliary intake air stream flowing out of the outlet port of an auxiliary intake passage.

Rotary-type throttling device for internal combustion engine

In a piping connection structure of a vehicle including: a throttle body connected to a power unit of the vehicle to adjust an intake air amount; a fuel injection device for injecting fuel to an intake passage including the throttle body; first pipings attached to the fuel injection device; and second pipings provided separately from the first pipings, and having end parts connected to the first pipings so as to intersect with the first pipings, a connection part between the first pipings and the second pipings has a long adjustment holes, which extend so as to allow adjustment of relative angles between the first pipings and the second pipings.

Piping connection structure

An intake system includes an air cleaner that is disposed above an engine main body mounted on a vehicle body frame and connected to cylinder heads of the engine main body and an air introducing unit for introducing air into an air inlet provided at a lateral part of the air cleaner on at least one side thereof in a vehicle width direction. The air introducing unit has an opened front end and is connected to the air cleaner so as to bend an intake direction from a vehicle front-rear direction to the vehicle width direction. In the air inlet, a plurality of ribs partition the air inlet into plural sections.

Intake system of saddle-type vehicle

A driver's seat and a passenger's seat integrally formed as a bench seat elongated in a vehicle width direction together with an intermediate connecting portion, which connects the driver's seat and the passenger's seat. An upper end portion of a seat support frame configured to be erected above a footrest surface and constitute a part of a vehicle body frame formed along one plane. A fuel tank and canister arranged in a separated manner in the vehicle width direction below the bench seat supported on the upper end portion of the seat support frame.

Evaporated fuel treatment device for vehicle

In a motorcycle having an air intake passage guiding an air flow to an internal combustion engine is formed between an upper surface of a front fender and a bottom plate of a front cowl covering a head pipe from the front and disposed just above a front wheel. The cooling performance of a heat exchanger disposed behind the front wheel and in front of an engine body is improved with a decrease in the air resistance by lowering the position of the front cowl. At least a part of an air intake duct is disposed above a front fender for supplying the air guided from an air flow inlet provided on the front end portion of a front cowl to an inlet system of an internal combustion engine. At least a part of the air intake duct forming a rear air intake passage is contained in the front cowl.

Front air guiding structure of motorcycle

In a motorcycle with a cowl, a bent portion which has an upright wall facing forwardly and is bent in an upward and downward direction is provided at an intermediate portion in a forward and backward direction of an air intake duct. A plurality of dewatering devices are provided, and configured to be hit from the front by traveling wind to remove moisture from the traveling wind. The dewatering devices are disposed at a plurality of locations in the air intake duct spaced from each other along the traveling wind flowing direction in the air passage in the front of the upright wall. An overall extent of a range in which the air passage can be seen up to a rear end thereof without obstruction when the air intake duct is viewed from the front of the traveling wind inlet is occupied by the dewatering devices.

Growing community of inventors

Wako, Japan

Takahiro Sano