Title:
内燃機関のロータリ式スロットル装置
Document Type and Number:
Japanese Patent JP6385407
Kind Code:
B2
Abstract:
A rotary-type throttling device for an internal combustion engine includes an upstream auxiliary intake passageway 45 formed in a throttle body 41 and having an inlet port 45i held in fluid communication with the atmosphere, and a downstream auxiliary intake passageway 55 formed in a cylindrical valve body 52 of a rotary valve 51 and having an outlet port 55e open at a downstream outer circumferential surface 52Sd of the cylindrical valve body. The upstream auxiliary intake passageway and the downstream auxiliary intake passageway 55 have a body-side joint fluid communication port 45j and a valve-side joint fluid communication port 55j formed in respective sliding surfaces of the throttle body 41 and the cylindrical valve body 52 and adapted to overlap each other to keep the upstream and downstream auxiliary intake passageways 45 and 55 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.
Inventors:
Takahiro Sano
Takuya Nakano
Takuya Nakano
Application Number:
JP2016184936A
Publication Date:
September 05, 2018
Filing Date:
September 22, 2016
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
F02D9/16; F02D9/02; F02M69/32; F16K3/26
Domestic Patent References:
| JP1162070U | ||||
| JP2006322423A | ||||
| JP6502708A | ||||
| JP62157211A | ||||
| JP61041808U | ||||
| JP51024425A | ||||
| JP8014016A |
Foreign References:
| US20090301433 |
Attorney, Agent or Firm:
Junko Kanzawa
Nozomi Gangwon
Nakamura Kun
Nozomi Gangwon
Nakamura Kun