Patent US2845684A successfully refreshed from Google Patents.
Patent EP0344780A2 successfully refreshed from Google Patents.
EP0344780A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Intake control device for engine
Assignee: Yamaha Motor Co Ltd
•
Filing: 1989-06-01
•
Granted: —
•
Expires: 2009-06-01
Abstract
Abstract An intake control device for an internal combustion engine comprises, in an intake passage (2) downstream of a throttle valve (5), a secondary valve (6). Said secondary valve is bypassed by a low speed air passage (7) of small cross-section. Within said low speed air passage, an intake opening-closing valve (9) is provided which is to be closed while the intake valve (3) of the internal combustion engine is open. The intake opening-closing valve (9) is controlled via an engine crankshaft.
Inventors
- 👤 Hiromitsu Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 16:53
CPC Classifications
F; F02; F02B; F02B29/00; F02B29/08; F02B29/083; F02D; F02D9/00; F02D9/02; F02M; F02M3/00; F02M3/08; F02B2275/00; F02B2275/32; F02D2009/0201; F02D2009/0252; F02D2009/0272; F02D2009/0279; F02D9/08; F02D9/10; F02D9/1035; F02D9/1055; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
An intake control device for an engine comprising: a throttle valve (5) provided in an intake passage (2) connecting a combustion chamber (4) to the atmosphere via an intake valve (3); a secondary valve (6) provided on the downstream side of said throttle valve (5) in said intake passage (2) and to be opened when the engine load is high; a low speed air passage (7) of a small cross-section bypassing said secondary valve (6); and an intake opening-closing valve (9) provided in said low speed air passage (7) and to be opened and closed, more particularly to be closed while the intake valve (3) is open, in linked motion with a crankshaft (8).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.