System for replacing engine lubricant
First Claim
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1. A system for replacing lubricant in an engine, comprising:
- a first subsystem for effecting replacement of the lubricant including a replacement lubricant reservoir, a spent lubricant reservoir, and an engine lubricant pan operatively coupled to a system having a pump, valves, and piping so that spent lubricant can be expelled from the engine and stored in the spent lubricant reservoir and the engine lubricant pan can be filled with lubricant from the replacement lubricant reservoir; and
a second subsystem including a device that measures engine shaft revolutions, a device indicating when the engine shaft has undergone a sufficient number of revolutions to warrant change of the engine lubricant, actuators and switches operatively coupled together and to said first subsystem to appropriately operate said pump and valves, and a device operative to prevent operation of said first subsystem while said engine is running.
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Abstract
A system for replacing spent lubricant in an internal combustion engine including a subsystem for calculating engine wear based on actual engine activity, preferably shaft revolutions. An adaptation of the system includes a subsystem for selecting lubricant filters.
49 Citations
22 Claims
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1. A system for replacing lubricant in an engine, comprising:
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a first subsystem for effecting replacement of the lubricant including a replacement lubricant reservoir, a spent lubricant reservoir, and an engine lubricant pan operatively coupled to a system having a pump, valves, and piping so that spent lubricant can be expelled from the engine and stored in the spent lubricant reservoir and the engine lubricant pan can be filled with lubricant from the replacement lubricant reservoir; and a second subsystem including a device that measures engine shaft revolutions, a device indicating when the engine shaft has undergone a sufficient number of revolutions to warrant change of the engine lubricant, actuators and switches operatively coupled together and to said first subsystem to appropriately operate said pump and valves, and a device operative to prevent operation of said first subsystem while said engine is running. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for replacing spent engine lubricant comprising:
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(a) an engine lubricant reservoir; (b) a spent lubricant reservoir; (c) a replacement lubricant reservoir; (d) a pump operatively coupled to said engine lubricant reservoir, said spend lubricant reservoir, and said replacement lubricant reservoir for fluid communication therewith and for selectively effecting replacement of lubricant in said engine lubricant reservoir with lubricant in said replacement lubricant reservoir, and for transferring lubricant from said engine lubricant reservoir to said spent lubricant reservoir; (e) a system for measuring revolutions of the shaft of said engine; and (f) a device for preventing operation of said pump while said engine is operating. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A system for replacing lubricant in an engine comprising:
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an engine lubricant reservoir; a spent lubricant reservoir; a replacement lubricant reservoir; a pump and valves operatively coupled to said engine lubricant reservoir, said spent lubricant reservoir, and said replacement lubricant reservoir to effect selective transfer of lubricant from said engine lubricant reservoir to said spent lubricant reservoir and from said new lubricant reservoir to said engine lubricant reservoir; a plurality of selectable filters coupled parallel to each other and serially to an inlet of said engine lubricant reservoir; and filter selecting means for selecting any of said filters. - View Dependent Claims (16, 17, 18, 19)
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20. A system for replacing spent engine lubricant comprising:
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(a) an engine lubricant reservoir; (b) a spent lubricant reservoir; (c) a replacement lubricant reservoir; (d) a pump operatively coupled to said engine lubricant reservoir, said spent lubricant reservoir, and said replacement lubricant reservoir for fluid communication therewith and for selectively effecting replacement of lubricant in said engine lubricant reservoir with lubricant in said replacement lubricant reservoir, and for transferring lubricant from said engine lubricant reservoir to said spent lubricant reservoir; and (e) a system for measuring revolutions of the shaft of said engine comprising a coil coupled to a spark plug wire so as to detect spark plug pulses by electromagnetic induction and a device coupled thereto for counting spark plug pulses detected by said coil.
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21. A system for replacing lubricant in an engine comprising:
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an engine lubricant reservoir; a spent lubricant reservoir; a replacement reservoir; a pump and valves operatively coupled to spent lubricant reservoir, and said replacement lubricant reservoir as to effect selective transfer of lubricant from said engine lubricant reservoir to said spent lubricant reservoir and from said new lubricant reservoir to said engine lubricant reservoir; a plurality of selectable filters coupled parallel to each other and serially to an inlet of said engine lubricant reservoir; filter selecting means for selecting any of said filters; and a system for measuring revolutions of the shaft of said engine comprising a coil coupled to a spark plug wire to detect spark plug pulses by electromagnetic induction and a device coupled thereto for counting spark plug pulses detected by said coil.
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22. A system for replacing lubricant in an engine, comprising:
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an engine lubricant reservoir; a spent lubricant reservoir; a replacement lubricant reservoir; a pump and valves operatively coupled to said engine lubricant reservoir, said spent lubricant reservoir, and said replacement lubricant reservoir to effect selective transfer of lubricant from said engine lubricant reservoir to said spent lubricant reservoir and from said new lubricant reservoir to said engine lubricant reservoir; a plurality of selectable filters coupled in parallel to each other and serially to an inlet of said engine lubricant reservoir; and a device for preventing operation of said pump and valves while said engine is running.
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Specification