Engine lubrication system with shared oil filter
AssigneeLubrication Research, Inc.
InventorM. Wayne Brown
Life of this patent
Estimating the term…
Abstract
A lubrication system for internal combustion engines including an electrically operated oil pump, a conduit, an electrical time-delay relay, a one-way valve and a pump bypass. Another conduit and electrical time-delay relay may be used with turbocharged engines. The lubrication system pressurizes engine oil when the mechanical oil pump is not fully operational. In a preferred embodiment, the lubrication system has an oil filter adapter which includes a one-way check valve.
Claims14
A system for lubrication of an internal combustion engine having an ignition, a starter motor, a battery system, a mechanical oil pump and an oil filter in fluid communication through a first inlet in said oil filter to said mechanical oil pump, comprising:
- an electrically operated oil pump connected in liquid communication with an oil sump of said engine and having a pressurized oil outlet;
- first conduit means for connecting said pressurized oil outlet to a second inlet of said oil filter, such that oil is communicated from said pressurized oil outlet through said second inlet and through said oil filter to a plurality of oil galleries in said engine;
- first electrical time-delay relay means for connection to said electrically operated oil pump and battery system of said engine for enabling operation of said electrically operated oil pump for a first predetermined time period independently of activation of said starter motor and, after said first predetermined time period has elapsed, for disabling operation of said electrically operated oil pump;
- one-way valve means in fluid communication with said first conduit means for preventing back-flow of oil into said pressurized oil outlet;
- and
- bypass means connecting said pressurized oil outlet of said electrically operated oil pump to an inlet of said electrically operated pump when said one-way valve means is closed or flow from said pressurized oil outlet is restricted.
A sandwich adapter for internal combustion engines having an engine block, a spin-on oil filter, and an external lubrication circuit, said sandwich adapter comprising:
- a housing;
- means for connecting said housing to said engine block for fluid communication therebetween;
- means for connecting said housing to said spin-on oil filter for fluid communication therebetween;
- means for connecting said housing to said external lubrication circuit for fluid communication therebetween;
- and
- a one-way check valve integral to said housing in fluid communication with said external lubrication circuit connecting means for preventing the back-flow of fluid into said external lubrication circuit.
An external lubrication circuit for internal combustion engines of the type having an ignition, a starter motor, a battery system, a mechanical oil pump and an oil filter in fluid communication through a first inlet in said oil filter to said mechanical oil pump, comprising:
- an external oil pump connected in liquid communication with an oil sump of said engine and having a pressurized oil outlet;
- a first conduit connected between said pressurized oil outlet and a second inlet of said oil filter;
- a first time-delay circuit connected to said external oil pump for enabling said external oil pump for a first predetermined time period independently of activation of said starter motor and, after said first predetermined time period has elapsed, for disabling said external oil pump;
- a one-way valve in fluid communication with said first conduit;
- and
- a bypass conduit connected between said pressurized oil outlet and an oil inlet of said external oil pump.
Dependencies are inferred from the claim text.