Rocker box cover assembly for internal combustion engine

Details Rocker box cover assembly for internal combustion engine Rocker box cover assembly for internal combustion engine

1991-01-28

1991-10-22

Okonsky, David A.

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

123 4186, 123195C, 123193H, F01M 910

Patent

active

050585428

ABSTRACT:
An improved rocker box cover assembly for an overhead valve, horizontal crankshaft, internal combustion engine. The cover assembly is a pre-assembled unit attached to the cylinder head and includes an inner cover section, which defines a rocker arm chamber, and an outer cover section with the space between the sections defining an oil separating chamber. The inner cover section is provided with an opening that provides communication between the chambers and a check valve is mounted in the opening. A gas outlet is located in the upper portion of the oil separating chamber while a drain opening is located in the lower end of the separating chamber and separated oil drains through the drain opening and is returned to the crankcase.

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