| 主权项 |
1. An adaptor that modifies an oil pump in a reciprocating, internal combustion engine having either no oil filtration system or a bypass oil filtration system and converts said system to a full-flow, oil filtration system, said engine including an engine block that has an oil outlet port in communication with an oil reservoir, an oil inlet port and alternate oil inlet port in communication with oil galleries and passages of the engine block, and oil pump drive means,
said oil pump including
a pump housing that extends along an axis A-A from an interior wall to an opposite, exterior wall thereof and defines a hollow, interior space between said walls, the exterior wall having an opening in communication with the hollow, interior space and the interior wall defining a pump oil inlet cavity and a pump oil outlet cavity that are spaced apart in side by side relation, and said interior wall has a shaft aperture;pump oil inlet and outlet ports in communication with the pump oil inlet and oil outlet cavities, respectively, and in communication with the hollow, interior space of the housing;means for mounting the interior wall of the housing to the engine block such that the engine block oil outlet port communicates with the pump inlet port;a rotor shaft mounted for rotation within the interior of the housing about said shaft axis A-A, said shaft extending along said axis from an exterior end thereof within the housing, through the housing, and protruding through the shaft aperture to an interior end thereof;a rotor element assembly in rotary, driven engagement with the exterior end of the rotor shaft for pumping oil from within the interior of the housing out the pump outlet port;means attached to the interior end of the rotor shaft for coupling the rotor shaft to the oil pump drive means in rotary, driven engagement; anda removable end plate for covering the exterior wall of said housing; said adaptor comprising: occluding means attachable to the pump for occluding the pump outlet port; and a plate that includes a flat, interior side and an opposite, exterior side, wherein
said interior side is shaped and dimensioned to cover and close off the opening of the exterior wall of the housing when the adaptor is attached to said exterior wall;an oil distribution cavity and an oil circulation cavity extend part way from said interior side toward said exterior side within said plate and are disposed in spaced apart, side by side relation such that, when said interior side of said plate is attached to the exterior side of the housing, said oil distribution and circulation cavities matingly align and communicate with the oil outlet and inlet cavities of the pump, respectively;said plate has an outlet port that communicates with the oil distribution cavity through a port channel;a regulator bore extends through the plate from an open end to an opposite, blind, plunger end;at the plunger end of the bore, a regulator bore inlet passage extends from the oil distribution cavity to the regulator bore;an outlet channel, disposed intermediate the regulator bore inlet passage and the open end of the regulator bore, extends from a regulator bore outlet port to the circulation cavity;a relief channel, disposed intermediate the outlet channel and the open end of the regulator bore, extends from the regulator bore to the circulation cavity;a regulator plunger is disposed for sliding, reciprocating motion within the plunger bore;spring retention means attached to the open end of the regulator bore for retaining the spring within said bore; anda compression spring is interposed and compressed between the spring retention means and the regulator plunger, said spring having dimensions and spring resistance such that, after the occluding means has been attached to the pump, the end plate has been removed from the pump, and the adaptor has been attached to the exterior wall of the housing with the oil distribution and circulation cavities of the adaptor matingly aligned with the oil outlet and inlet cavities of the pump, respectively, and with the engine operating, whenever the pressure of oil on the regulator bore is less than engine design oil pressure, the plunger remains at the plunger end of the bore and oil exits the pump through the outlet port of the adaptor; and, whenever the pressure of oil on the regulator plunger equals or exceeds the engine design oil pressure, the oil pressure at the plunger end of the bore forces the regulator plunger to slide towards the spring retention means, thereby compressing the spring and uncovering the regulator bore outlet channel, whereby surplus oil flows through the regulator bore inlet passage into the circulation cavity and thence recirculates within the pump/adaptor combination. |
