EP0265282A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Valve operating apparatus in an internal combustion engine
Assignee: Honda Motor Co Ltd
•
Filing: 1987-10-23
•
Granted: —
•
Expires: 2007-10-23
Abstract
Abstract Valve operating apparatus is disclosed in which valves (1a,1b) are operated by transmitting members in the form of rocker arms (5-7) or bucket lifters (55-57) drivey by cams (3a,3b,4) having different cam profiles, and coupling means (15) for selectively connecting or disconnecting adjacent transmitting members to vary the operation of the valves under different engine operating conditions. The transmitting member (6,56) that is not directly associated with a valve and that idles when not coupled to an adjacent transmitting member is spring biased toward the operating cam and means are provided to limit the stroke of the biasing means.
Inventors
- 👤 Tsuneo C/O Kabushiki Kaisha Konno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 06:36
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/26; F01L1/267
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
68 words
Operating apparatus for a valve in an internal combustion engine including a camshaft rotatably driven by said engine, a cam on said camshaft, a transmitting member in sliding contact with said cam for operating said valve in response to the profile of said cam, means for biasing said transmitting member toward said cam, and means for limiting the extent of bias of said transmitting member toward said cam.
Claim 2
Dependent Claim
68 words
Operating apparatus for a valve in an internal combustion engine including a camshaft rotatably driven by said engine, a cam on said camshaft, a transmitting member in sliding contact with said cam for operating said valve in response to the profile of said cam, means for biasing said transmitting member toward said cam, and means for limiting the extent of bias of said transmitting member toward said cam.
Claim 3
Dependent Claim
46 words
Valve operating apparatus according to claim 1 in which said biasing means includes a stationary base subjacent said transmitting member; an abutment member movable in a direction between said base and said transmitting member; and spring means for biasing said abutment member toward said transmitting member.
Claim 4
Dependent Claim
37 words
Valve operating apparatus according to claim 2 in which said limiting means includes shoulder means on said abutment member and said base cooperative to limit the extent of movement of said abutment member toward said transmitting member.
Claim 5
Dependent Claim
79 words
Valve operating apparatus according to any of claims 1 to 3 including a first transmitting member operably engaging a first cam on said camshaft; a second transmitting member operably engaging a second cam on said camshaft; a coupling device for selectively interconnecting and disconnecting said first and second transmitting member being adapted for idling movement with said coupling device in its disconnecting mode; and said biasing means being operative to bias said second transmitting member toward said second cam.
Claim 6
Dependent Claim
24 words
Valve operating apparatus according to any preceding claim in which said transmitting members are rocker arms mounted for pivotal movement on a rocker shaft.
Claim 7
Dependent Claim
30 words
Valve operating apparatus according to any of claims 1 to 4 in which said transmitting members are bucket lifters engageable with said cams for reciprocatory movement in a guide block.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.