Valve mechanism lubrication system for horizontal cylinder overh

Details Valve mechanism lubrication system for horizontal cylinder overh Valve mechanism lubrication system for horizontal cylinder overh

1988-05-20

1989-11-21

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

123106W, F01M 910, F01M 1302, F01M 1102

Patent

active

048814962

ABSTRACT:
A lubrication system for the valve actuating mechanism of an internal combustion engine having a vertical drive shaft and horizontally oriented cylinder includes a rocker box housing the valve actuating mechanism with the valve actuating mechanism including a lower rocker arm and an upper rocker arm each oriented for rocking in a substantially horizontal rocking plane. A push rod cavity communicates at one end with the crankcase and at the other end with the rocker box. A cam shaft gear disposed at a lower end of a vertical cam shaft slings liquid oil from the crankcase through the push rod cavity into the rocker box. A dam is provided for retaining liquid oil in the rocker box at a level which partially submerges the lower rocker arm such that the rocking motion of the lower rocker arm splashes dammed oil to lubricate the valve actuating mechanism.

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patent: 4790273 (1988-12-01), Oguri et al.
patent: 4825825 (1989-05-01), Chino et al.

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