Combination counterbalance and oil slinger for horizontal shaft engines
AssigneeTecumseh Products Company
InventorPeter G. Kronich
Life of this patent
Estimating the term…
Abstract
A combination counterbalancing and oil slinger mechanism located in the sump of a horizontal shaft internal combustion engine having two slinger counterweights radially connected on a slinger shaft. As the counterbalancing oil slinger rotates, it both counterbalances the inertial forces created by the moving parts of the engine and also lubricates the same moving parts by throwing lubricating fluid towards them. A deflector situated partially above the counterbalancing oil slinger directs the lubricating fluid towards the critical bearing points of the moving parts. A restricting wall in the engine sump controls the quantity of lubricating fluid flowing into the oil slinger well.
Claims22
In an internal combustion engine including a crankcase having moving parts therein including a piston, a connecting rod pivotally connected to said piston, a substantially horizontally disposed rotatable crankshaft pivotally connected to said connecting rod, and a crankshaft counterweight connected to said crankshaft, and a lubricating fluid sump below said moving parts, a counterbalancing and lubricating mechanism comprising:
- lubricating fluid in said sump;
- an eccentric member rotatably mounted substantially parallel to said crankshaft in said sump and substantially vertically in line below said piston and said crankshaft, said eccentric member being disposed in said sump;
- drive means coupling together said crankshaft and said eccentric member for rotatably driving said eccentric member in counterrotation to said crankshaft to balance forces created by said moving parts, said eccentric member including slinger means thereon for throwing lubricating fluid from the sump towards said moving parts;
- wherein said lubricating fluid is at a level vertically below the highest rotational point of said slinger means during operation of said engine;
- and,
- deflector means extending at least partially above the level of the lubricating fluid and being at least partially positioned above said eccentric member for directing thrown lubricating fluid towards said moving parts.
In an internal combustion engine including a crankcase having moving parts therein including a piston, a connecting rod pivotally connected to said piston, a substantially horizontally disposed rotatable crankshaft pivotally connected to said connecting rod, and a crankshaft counterweight connected to said crankshaft, and a lubricating fluid sump below said moving parts for retaining therein lubricating fluid, a counterbalancing and lubricating mechanism comprising:
- an eccentric member rotatably mounted substantially parallel to said crankshaft in said sump and substantially vertically in line below said piston and said crankshaft, said eccentric member being disposed in said sump;
- drive means coupling together said crankshaft and said eccentric member for rotatably driving said eccentric member in counterrotation to said crankshaft to balance forces created by said moving parts, said eccentric member including slinger means thereon for throwing lubricating fluid from the sump towards said moving parts;
- and,
- restriction means in said sump for controlling the quantity of lubrication fluid which comes in contact with said slinger means.
In an internal combustion engine including a crankcase having moving parts therein including a piston, a connecting rod pivotally connected to said piston, a substantially horizontally disposed rotatable crankshaft pivotally connected to said connecting rod, and a crankshaft counterweight connected to said crankshaft, and a lubricating fluid sump below said moving parts for retaining therein lubricating fluid, a counterbalancing and lubricating mechanism comprising:
- an eccentric member rotatably mounted substantially parallel to said crankshaft in said sump and substantially vertically in line below said piston and said crankshaft, said eccentric member being disposed in said sump;
- drive means coupling together said crankshaft and said eccentric member for rotatably driving said eccentric member in counterrotation to said crankshaft to balance forces created by said moving parts, said eccentric member including slinger means thereon for throwing lubricating fluid from the sump towards said moving parts;
- and,
- deflector means at least partially positioned above said eccentric member and connected to the crankcase for directing thrown lubricating fluid towards said moving parts.
In an internal combustion engine including a crankcase having moving parts therein including a piston, a connecting rod pivotally connected to said piston, a substantially horizontally disposed rotatable crankshaft pivotally connected to said connecting rod, and a crankshaft counterweight on said crankshaft, and a lubricating fluid sump below said moving parts for retaining therein lubricating fluid, a counterbalancing and lubricating mechanism comprising:
- an oil slinger including a slinger shaft and an eccentric slinger counterweight connected radially outwardly on said slinger shaft, said oil slinger rotatably mounted substantially parallel to said crankshaft in said sump and substantially vertically in line below said piston and said crankshaft;
- drive means coupling together said crankshaft and said oil slinger for rotatably driving said oil slinger in counterrotation to said crankshaft to balance forces created by said moving parts, and to cause said slinger counterweight to throw lubricating fluid upwardly from said sump as said slinger counterweight rotates;
- and
- deflector means at least partially positioned above said oil slinger for directing thrown lubricating fluid towards the moving parts.
In an internal combustion engine including a crankcase having moving parts therein including a piston, a connecting rod pivotally connected to said piston, a substantially horizontally disposed rotatable crankshaft pivotally connected to said connecting rod, and a crankshaft counterweight connected to said crankshaft, and a lubricating fluid sump below said moving parts for retaining therein lubricating fluid, a counterbalancing lubricating apparatus comprising:
- an oil slinger including a slinger shaft and a slinger counterweight connected radially onto said slinger shaft, said oil slinger rotatably mounted substantially parallel to said crankshaft in said sump and substantially vertically in line below said piston and said crankshaft;
- drive means coupling together said crankshaft and said oil slinger for rotatably driving said oil slinger in counterrotation to said crankshaft to balance forces created by said moving parts, and to cause said slinger counterweight to throw lubricating fluid from said sump radially outwardly as said slinger counterweight rotates;
- and
- restricting means connected to said sump for restricting the quantity of lubricating fluid which comes in contact with said slinger counterweight and restricting the quantity of lubricating fluid which is thrown by said slinger counterweight.
Dependencies are inferred from the claim text.