A cooling lubrication system comprises a dry sump, an oil tank, and a pump system that operates an oil circuit in which an oil pump delivers oil from the dry sump into the oil tank, and the pump system comprises a vane cell pump and two gerotor pumps on a shaft.

An engine assembly includes an air-cooled engine and an external oil reservoir. The engine includes a vertically-oriented crankshaft a crankcase cover having a front portion and a rear portion, wherein the front portion of the crankcase cover and the cylinder head are located forward of a vertical plane that includes the crankshaft axis, a return pump housing formed in the exterior of the crankcase cover, a return pump positioned in the return pump housing, and a return pump inlet formed through the crankcase cover, wherein the return pump inlet is located in the front portion of the crankcase cover and the return pump inlet is located closer to the camshaft than to the crankshaft. The external oil reservoir includes an oil tank and an oil filter assembly.

A lubrication system for a frac pump includes a lubrication system housing, a lubricant tank held by the lubrication system housing, a heating device held by the lubrication system housing, a cooling device held by the lubrication system housing, and a filtration device held by the lubrication system housing. The lubrication system housing is configured to be at least one of mounted to a frac pump housing of the frac pump or held within the frac pump housing.

A lubricating device for lubricating an internal combustion engine irrespective of orientation, which device comprises a housing that forms a housing part of the internal combustion engine, is, in order to make it possible to reliably lubricate an internal combustion engine, irrespective of orientation, by means of simple constructive means, designed and developed such that a first working chamber for storing lubricant and a second working chamber that is separate from the first working chamber are arranged in the housing, such that a passage is formed from the first working chamber to the second working chamber, such that the second working chamber comprises an opening to a crankshaft receiving area of the housing, and such that the first working chamber comprises a lubricant channel to the crankshaft receiving area, the opening and the lubricant channel being spaced apart from each other in a height direction such that lubricant can be supplied to the crankshaft receiving area, irrespective of orientation, at least via the opening or the lubricant channel.

An internal combustion engine having at least one crankcase for defining a guide housing in which at least one crankshaft is guided in rotation about an axis of rotation and lubricated by a lubricating fluid, the at least one crankcase being of the dry-sump type. Such an internal combustion engine has at least two pumps forming a pump train of pumps on a common axis, the pump train being fitted in a cylindrical bore of the at least one crankcase.

A marine outboard engine comprises an internal combustion engine, a gearcase defining a gearcase chamber, a plurality of gears disposed in the gearcase chamber, a driveshaft operatively connecting the crankshaft to the plurality of gears, an output shaft disposed at least in part in the gearcase chamber and being operatively connected to the plurality of gears, a rotor connected to the output shaft for propelling the marine outboard engine, a lubricant reservoir for holding lubricant, a first lubricant conduit fluidly connecting the lubricant reservoir to the crankcase chamber for supplying lubricant from the lubricant reservoir to the crankcase chamber, and a second lubricant conduit fluidly connecting the lubricant reservoir to the gearcase chamber for supplying lubricant from the lubricant reservoir to the gearcase chamber.

A tank for a dry sump lubrication system for an internal combustion engine is disclosed. The tank includes a body having a first portion, a second portion, and defines an inner chamber. The tank also includes a filter housing integrally formed with the first portion and disposed inside the inner chamber. The filter housing is configured to receive a filter. Further, the body and the filter housing are formed by a blow molding process.

A lubricating device for lubricating an internal combustion engine irrespective of orientation, which device comprises a housing that forms a housing part of the internal combustion engine, is, in order to make it possible to reliably lubricate an internal combustion engine, irrespective of orientation, by means of simple constructive means, designed and developed such that a first working chamber for storing lubricant and a second working chamber that is separate from the first working chamber are arranged in the housing, such that a passage is formed from the first working chamber to the second working chamber, such that the second working chamber comprises an opening to a crankshaft receiving area of the housing, and such that the first working chamber comprises a lubricant channel to the crankshaft receiving area, the opening and the lubricant channel being spaced apart from each other in a height direction such that lubricant can be supplied to the crankshaft receiving area, irrespective of orientation, at least via the opening or the lubricant channel.

An engine assembly includes a small air-cooled engine and a dry sump lubrication system including an external oil reservoir, wherein the dry sump lubrication system has an overall oil capacity that provides at least five hundred hours of engine oil life.