Vertical engine
First Claim
1. A vertical engine comprising a first shaft disposed in a generally vertical direction, a second shaft disposed in a generally vertical direction and driven by the first shaft, and a chain wound around sprockets mounted on the first and second shafts and circulated in a generally horizontal plane,wherein the vertical engine further includes an oil guide means which is disposed along at least a portion of a circulation locus of the chain and which includes a generally horizontal wall opposed to a lower surface of the chain, andwherein the first and second shafts are provided at their upper ends with the sprockets.
1 Assignment
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Accused Products
Abstract
Recesses are provided in portions of a head cover and a crankcase which are opposed to outer peripheries of a timing chain and a balancer-driving chain driven by a crankshaft of a vertical engine, whereby vertical walls and horizontal walls are formed to oppose to outer peripheral surfaces and lower surfaces of the timing chain and the balancer-driving chain. An oil scattered from the timing chain and the balancer-driving chain by a centrifugal force is caught on the vertical walls, and the oil flowing down along the vertical walls by gravitation is retained on the underlying horizontal walls, whereby the oil can be brought into contact with the chains without waste to effectively lubricate the chains.
18 Citations
18 Claims
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1. A vertical engine comprising a first shaft disposed in a generally vertical direction, a second shaft disposed in a generally vertical direction and driven by the first shaft, and a chain wound around sprockets mounted on the first and second shafts and circulated in a generally horizontal plane,
wherein the vertical engine further includes an oil guide means which is disposed along at least a portion of a circulation locus of the chain and which includes a generally horizontal wall opposed to a lower surface of the chain, and wherein the first and second shafts are provided at their upper ends with the sprockets.
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7. A vertical engine comprising a first shaft disposed in a generally vertical direction, a second shaft disposed in a generally vertical direction and driven by the first shaft, and a chain wound around sprockets mounted on upper ends of the first and second shafts and circulated in a generally horizontal plane,
wherein the vertical engine further includes an oil guide means which is disposed along a region where the chain is meshed with the sprockets, and which includes a generally vertical wall opposed to an outer peripheral surface of the chain.
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10. A vertical engine comprising a first shaft disposed in a generally vertical direction, a second shaft disposed in a generally vertical direction and driven by the first shaft, and a chain wound around sprockets mounted on the first and second shafts and circulated in a generally horizontal plane,
wherein the vertical engine further includes a rib which is disposed generally along a travel locus of the chain to guide an oil to the chain, and wherein the rib is extended in a direction perpendicular to and toward the travel locus of the chain, from a member defining a chamber for accommodating the chain.
Specification