Patent ID: 6349693
Filing Date: 2002-02-26
Classification: B01D,F01M

Abstract:
A method for removing and retaining suspended contaminant particles from an internal combustion engine lubricant flow, said engine having an oil pump pressure outlet, a normally installed spin on filter having an oil filter intake plate, said flow normally pressurized and flowing unrestricted from the pump pressure outlet toward the oil filter intake plate, wherein a conduit section is formed through their assembled combination, said conduit sealingly disposed between said pressure outlet and said filter intake plate, said method comprising the steps of:a. providing a lubricant flow restriction means sealingly disposed between associated ends of said conduit section, said restriction having a plurality of predetermined full flow control orifices for fluidly connecting said oil pump pressure outlet and said oil filter intake plate; b. placing said lubricant flow restriction means sandwiched between said oil pump pressure outlet and said oil filter intake plate for creating a positive pressure differential between the oil pump pressure outlet side and the oil filter intake plate side of said flow restriction means; c. providing a duct within said lubricant flow restriction means; d. providing at least a first predetermined inlet control orifice juxtaposed to said pump pressure outlet side for fluidly connecting said pressure outlet to the duct in step c; e. providing at least a second predetermined exhaust control orifice juxtaposed to said oil filter intake plate side for fluidly connecting said oil filter intake plate to the duct in step c, and for fluidly connecting the inlet control orifice to the exhaust control orifice through the duct in step c; f. providing a filter medium within the duct; g. running said engine for establishing normal engine lubricant flow, urging a bypass lubricant flow through said duct, said bypass lubricant flow moving from said inlet orifice to said exhaust orifice; whereby said bypass lubricant flow is substantially filtered during step g.