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AssigneeOutboard Marine Corporation
InventorsGregory J. Binversie, Todd D. Craft, Jerry A. Hladilek, Erik Jorgensen
Estimating the term…
A lubricant supply system for a two-stroke internal combustion engine, which system includes first and second adjacently located and substantially sealed crankcase chambers which alternately experience high and low pressure conditions which are out of phase with respect to the occurrence thereof, first and second oil supply passages respectively communicating with the first and second crankcase chambers, an oil supply circuit including an oil supply chamber adapted to contain oil and having therein a formation including therein a recess isolated from the oil supply chamber and communicating with the first and second oil supply passages, a metering rod including therein an indentation and supported in the oil supply chamber for movement in the formation between a first position wherein the indentation is located in the oil chamber, thereby affording filling of the indentation with oil, and a second position wherein the indentation is located in the formation in communication with the recess, thereby affording supplying of the oil in the indentation to the sealed crankcase chambers, and a mechanism for effecting movement of the oil metering rod between the first and second positions.
A lubricant supply system for a two-stroke internal combustion engine, said system including first and second adjacently located and substantially sealed crankcase chambers which alternately experience high and low pressure conditions which are out of phase with respect to the occurrence thereof, and an oil supply circuit including an oil supply passage including ends respectively communicating with said first and second crankcase chambers, an oil pump, an oil supply chamber adapted to contain oil, communicable with said oil pump for receipt of oil therefrom and communicable with said oil supply passage intermediate said ends for delivery of oil thereto so as to supply the oil to said first and second crankcase chambers, a member moveable independently of said pump and selectively and cyclically in and relative to said oil chamber for delivering a predetermined amount of oil to said supply passage during each cycle of said member, and means for selectively effecting cyclical movement of said member.
A lubricant supply system for a two-stroke internal combustion engine, said system including first and second adjacently located and substantially sealed crankcase chambers which alternately experience high and low pressure conditions which are out of phase with respect to the occurrence thereof, first and second oil supply passages respectively communicating with said first and second crankcase chambers, an oil supply circuit including an oil supply chamber adapted to contain oil and having therein a formation including therein a recess isolated from said oil supply chamber and communicating with said first and second oil supply passages, a metering rod including therein an indentation and supported in said oil supply chamber for movement in said formation between a first position wherein said indentation is located in said oil chamber, thereby affording filling of said indentation with oil, and a second position wherein said indentation is located in said formation in communication with said recess, thereby affording supplying of the oil in said indentation to said sealed crankcase chambers, and means for effecting movement of said oil metering rod between said first and second positions.
A lubricant supply system for a two-stroke internal combustion engine, said system including a plurality of pairs of first and second adjacently located and substantially sealed crankcase chambers which extend vertically, which are defined, in part, by a crankcase cover including an exterior wall, and which alternately experience high and low pressure conditions which are out of phase with respect to the occurrence thereof, a like plurality of pairs of first and second oil supply passages respectively communicating with said pairs of first and second crankcase chambers and extending to said wall, an oil supply circuit including an oil supply chamber which is defined by said crankcase cover wall and by a member fixed to said crankcase cover, which extends vertically and includes a top and a bottom, which is adapted to contain oil, and which has therein a like plurality of formations fixed to said wall and respectively including therein vertically extending and aligned apertures, and recesses which respectively communicate with said apertures and face said wall, which are isolated from said oil supply chamber, and which respectively communicate with said pairs of first and second oil supply passages, an oil reservoir, an oil pump communicating with said bottom of said supply chamber to supply oil thereto, a vapor separator communicating with said top of said oil supply chamber to receive returning oil therefrom and including an oil holding tank having therein a float member, and an apportioning valve communicating with said oil reservoir, with said oil holding tank of said vapor separator, and with said oil pump, and including a valve member operatively connected to said float member and being moveable, in response to location of said float member above a given position, to a first position blocking oil flow from said oil reservoir to said oil pump and permitting oil flow from said oil holding tank to said oil pump, and being moveable, in response to location of said float member below a given position, to a second position blocking oil flow from said oil holding tank to said oil pump and permitting oil flow from said oil reservoir to said oil pump, a metering rod including a like plurality of aligned segments which are arranged in series, which respectively include therein grooves, and which are supported in said oil supply chamber for movement in said apertures in said formations between first positions wherein said grooves are located in said oil chamber, thereby affording filling of said grooves with oil, and second positions wherein said grooves are located in said formations in communication with said recesses, thereby affording supplying of the oil in said grooves to said sealed crankcase chambers, an electrical solenoid operative, when energized, to displace said metering rod in one direction between said first and second positions, and a spring operative, when said solenoid is deenergized, to displace said metering rod in the direction opposite to said one direction.
A two-stroke internal combustion engine comprising a first crankcase, a second crankcase, a pulse passage communicating between said first and second crankcases, an oil pump including an inlet and an outlet, an oil supply chamber spaced from said pulse passage, communicating between said oil pump outlet and said oil pump inlet for continuously receiving oil discharged from said oil pump outlet and for continuously returning excess oil to said oil pump inlet, a metering passage extending between said oil supply chamber and said pulse passage, a metering rod extending into said metering passage, including therein a recess, and being movable between an oil receiving position wherein said recess is in communication with said oil supply chamber, whereby a quantity of oil is received in said recess, and a delivery position wherein said recess communicates with said pulse passage, whereby the oil in said recess is delivered to said pulse passage, and means for displacing said metering rod between said receiving position and said delivery position.
An internal combustion engine comprising a crankcase which supports a vertically extending crankshaft, and which defines a pair of adjacent sealed crankcase chambers defined, at least in part, by a crankcase cover including a vertically extending oil supply channel, a pair of bosses located in said oil supply channel in vertically spaced relation to each other and respectively including therein vertically aligned apertures, a pair of horizontally extending oil supply passages communicating with each other, communicating respectively with said pair of crankcases, and respectively intersecting said pair of apertures, a metering rod extending through said apertures in said bosses, being axially moveable between an oil accepting position and an oil delivery position, and including therein a pair of axially spaced annular grooves located in said oil supply channel when said metering rod is in said oil accepting position and respectively located in said oil supply passages when said metering rod is in said oil delivery position, means for displacing said metering rod between said accepting position and said delivery position and including a spring biasing said metering rod in one direction toward one of said accepting position and said delivery position, and a solenoid displacing said metering rod in the direction opposite to said one direction against the action of said spring and to the other of said accepting position and said delivery position in response to electrical actuation thereof, an oil sump, an oil pump including an inlet communicating with said oil sump, and an outlet communicating with said oil supply channel, and a conduit communicating with said oil supply channel and with said pump upstream of said inlet.
A lubricant supply system for a two-stroke internal combustion engine, said system including a pair of first and second adjacently located and substantially sealed crankcase chambers which alternately experience high and low pressure conditions which are out of phase with respect to the occurrence thereof, and an oil supply circuit including an oil supply passage including ends respectively communicating with said first and second crankcase chambers, an oil pump, an oil supply chamber adapted to contain oil, communicable with said oil pump for receipt of oil therefrom and communicable with said oil supply passage intermediate said ends for delivery of oil thereto so as to supply the oil to said first and second crankcase chambers, a member which includes an oil supply space and which is moveable independently of said pump and selectively and cyclically in and relative to said oil chamber and said oil supply passage between a first position wherein the first and second crankcase chambers are substantially sealed from each other, and a second position wherein said crankcase chambers are in communication with each other, and means for selectively effecting cyclical movement of said member between said first and second positions.
A lubricant supply system for a two-stroke internal combustion engine, said system including first and second adjacently located and substantially sealed crankcase chambers which alternately experience high and low pressure conditions which are out of phase with respect to the occurrence thereof, and an oil supply circuit including an oil supply passage including ends respectively communicating with said first and second crankcase chambers, an oil pump, an oil supply chamber adapted to contain oil, a member which includes an oil supply space and which is moveable independently of said pump and selectively and cyclically in and relative to said oil chamber and said oil supply passage between a first position wherein the first and second crankcase chambers are substantially sealed from each other and said oil supply space is located in said oil chamber, whereby said space is filled with a predetermined amount of oil, and a second position wherein said crankcase chambers are in communication with each other and said oil space is in communication with said oil supply passage so as to deliver the predetermined amount of oil to said supply passage during each cycle, and means for selectively effecting cyclical movement of said member between said first and second positions.
Dependencies are inferred from the claim text.