Valve operating device with stopping function for internal combustion engine
A valve operating device is described having a stopping function in an internal combustion engine, comprising: a cam shaft supported by a cylinder head and rotated in association with rotation of a crankshaft; and a rocker arm rockably mounted on a rocker shaft supported by the cylinder head to open and close an intake or exhaust valve following rotation of a cam mounted on the cam shaft. The rocker arm has an oil-pressure-operated control mechanism which stops the operation of the intake or exhaust valve according to operating conditions of the engine, in which: a cam shaft passage is formed in an oil pressure supplying passage extending from an oil pressure source through an oil passage in the rocker shaft to the control mechanism in such a manner that the cam shaft passage passes through one end portion of the cam shaft, a changeover valve for opening and closing the cam shaft passage is provided at the one end portion of the cam shaft, and a centrifugal governor is provided at the one end portion of the cam shaft in such a manner that the centrifugal governor rotates with the cam shaft and turns changeover valve when the speed of the cam shaft is in a predetermined range, thereby to communicate the oil pressure source with the control mechanism.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4589387
- OSTI ID:
- 5703237
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330100* -- Internal Combustion Engines
CONTROL EQUIPMENT
CYLINDERS
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICAL STRUCTURES
MOTION
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PRESSURE EFFECTS
ROTATION
SHAFTS
VALVES
VELOCITY