Valve gear for four-cycle engine

Patent · Tue Oct 06 04:00:00 EDT 1987

OSTI ID:5776838

Fujikawa, T; Hirata, M; Tamba, S; Fukui, N

This patent describes a valve gear adapted for a four-cycle engine having a guide portion formed on the outer circumference of an output shaft connected to a crankshaft. It folds around the output shaft as to return back to a starting point in two turns, and has interlocking means provided with a portion engaging with the guide portion and moved by the rotation of the crankshaft to open intake and exhaust valves. The improvement resides in that: the guide portion, only one in number, is provided on the one output shaft; and the interlocking means, two in number, respectively during the intake and exhaust valves, are so disposed basically opposite to each other across the output shaft as to engage with the single guide portion. The guide portion is so formed that the guide position of the interlocking means axially reciprocates once, keeping the same radial distance from the rotation axis of the crankshaft in two turns thereof. The interlocking means are rotatably supported about a journal intersecting at right angles with the output shaft, and one point on each of the interlocking means is provided with a rocking member engaging with the guide portion; and the rocking member is provided with means to lift the valve by the rocking motion.

• Assignee: Kawasaki Jukogyo Kabushiki Kaisha
• Patent Number(s): US 4697555
• OSTI ID: 5776838
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
GEARS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICAL STRUCTURES
OPERATION
SHAFTS
SUPPORTS
VALVES