Valve moving system of an overhead valve engine
An air-cooled overhead valve engine is described comprising: a cylinder head; a cylinder head cover removably attached to the cylinder head; an inlet valve; an exhaust valve; first and second push rods; a rocker arm chamber formed between the cylinder head and the cylinder head cover; first and second rocker arms having a tapered shape disposed in the rocker arm chamber; first and second knuckle type footing bolt means for supporting the first and second rocker arms, respectively; a pair of bosses for receiving a stem portion of the inlet and exhaust valve, the bosses being disposed above the footing bolts; a breather, disposed under the cylinder head cover and positioned laterally outside of the push rods within the rocker arm chamber; a combustion chamber disposed below the inlet and exhaust valve; and an ignition plug having a discharge electrode and a main body, the discharge electrode being disposed above the combustion chamber and opposite one of the push rods, and the main body projecting outwardly from the cylinder head.
- Assignee:
- Kubota Limited, Osaka
- Patent Number(s):
- US 4686946
- OSTI ID:
- 6098810
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330100* -- Internal Combustion Engines
AIR FLOW
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
CYLINDERS
ELECTRIC DISCHARGES
ELECTRODES
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
FLUID FLOW
GAS FLOW
HEAT ENGINES
IGNITION SYSTEMS
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
VALVES