Valve actuating apparatus for optionally resting the operation of a valve in internal combustion engine

Patent · Tue Oct 21 04:00:00 EDT 1986

OSTI ID:5074507

Yoshizaki, K

A valve actuating apparatus is described for optionally resting the operation of a valve in an internal combustion engine. The apparatus has a swing rocker arm which is pivoted at one end to a rocker arm shaft and at the other end bears against a valve stem of the valve, and a rotatable cam which bears against the rocker arm at an intermediate portion thereof to swing the latter about the rocker arm shaft. The apparatus is applied to the rocker arm which comprises: a first arm having one end pivoted to the rocker arm shaft and the other end extending toward the valve stem; a second arm having one end bearing against a valve stem and the other end extending toward the rocker arm shaft; a connecting pin carried by the two arms and extending in parallel to the rocker arm shaft for rotatably interconnecting the respective other ends of the two arms; a locking pin carried by one of the two arms and engageable with the other of the two arms to selectively interconnect the two arms, whereby the two arms are brought into a generally straight integral swing rocker arm position to operate the valve by following the cam when the locking pin interconnects the two arms, and the two arms are foldable at the connecting pin by following the cam to rest the operation of the valve when the locking pin releases the two arms; and a stopper means to restrict the returning position of the two arms when folded toward the cam.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Aichi
• Patent Number(s): US 4617880
• OSTI ID: 5074507
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ACTUATORS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FASTENERS
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MOTION
OPERATION
POSITIONING
ROTATION
SHAFTS
VALVES