Automatic oil additive injector

Details Automatic oil additive injector Automatic oil additive injector

1993-07-26

1994-07-12

Cross, E. Rollins

Internal-combustion engines

Lubricators

Crankcase, pressure control

184 15, 184 621, 184 74, F01M 902

Patent

active

053278615

ABSTRACT:
An automatic oil additive injector is disposed over the drain opening in a bottom wall of an engine oil pan and extends into the oil pan. A side port is provided in a housing of the injector for allowing oil to drain therethrough when the oil drain plug is removed. Primary and secondary valve assemblies and a pump operator provided in the housing are activated upon removal of the drain plug to allow a chamber therebetween to fill with a predefined volume of additive, preferably silicone fluid, from a reservoir of the injector and which, upon engagement of the drain plug, dispense the fluid into the oil pan at each oil change to decrease aeration of the oil. In a second embodiment, the additive injector and reservoir are incorporated in the lubricating oil filter header.

REFERENCES:
patent: 2898902 (1959-08-01), Vogel
patent: 4284245 (1981-08-01), Fishgal
patent: 4703727 (1987-11-01), Cannon
patent: 4750456 (1988-06-01), Ladrach
patent: 5273134 (1993-12-01), Hegemier et al.

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