An internal combustion engine, having a cylinder crankcase delimiting a crank chamber and a lubricant pan accommodating a lubricant sump, which has a lubricant pan upper part arranged between the crank chamber and the lubricant sump and a lubricant pan lower part fastened on the lubricant pan upper part. Multiple ridges originate from a base component of the lubricant pan upper part in the direction of the lubricant sump, which ridges partially intersect and thus form chambers which are peripherally closed in section between them, and lubricant passage openings formed in the lubricant pan upper part open into at least part of the chambers, via which openings the crank chamber and the lubricant sump are fluidically connected.

An oil treatment system for an internal combustion engine in one implementation includes an elongated dipstick tube defining a tube axis and a first flow passageway, a housing arranged on the dipstick tube and defining an internal cavity, an oil treatment apparatus disposed in the internal cavity, and a retainer coupled to the housing. The retainer may have a cylindrical body comprising an elongated first flow protuberance insertably received through the oil treatment apparatus to establish fluid communication between the oil treatment apparatus and the first flow passageway of the dipstick tube. The retainer comprises a cavity through which oil may be added directly to the first flow passageway of the dipstick which may be fluidly coupled to an oil sump of the engine. The oil treatment apparatus may be an oil filter. An oil treatment additive may optionally be added to the housing.

A lubrication system for a machine such as a mobile generator, a mobile light tower, or a mobile jobsite heater implements an engine oil supplementation strategy from an auxiliary sump to increase service time between engine oil servicing tasks of an internal combustion engine. The system periodically introduces a supplemental volume of oil from an auxiliary sump into the engine's lubricating system during an oil supplement event. The fluid communication between the engine sump and auxiliary sump may be achieved through multiple sump connections, which may include a sump-to-sump return line that provides a liquid connection allowing oil to freely flow between the engine sump and the auxiliary sump and a vent line that provides a gaseous connection between a void space at an upper end of the auxiliary sump and a void space at an upper end of the engine sump.

An apparatus and methods for the lubrication of the engine of an off-road vehicle, such as when the vehicle is airborne or upside down due to tipping over. The apparatus includes an upper chamber and a lower chamber. Fluid communication is established between the upper chamber and the lower chamber by way of a central tube. One or more vanes are arranged in the interior of the central tube to inhibit oil flow from the lower chamber to the upper chamber when the vehicle is upside down. An inlet hose connector is configured for receiving engine oil from an oil cooler and supplying the engine oil to the lower chamber. An outlet hose connector is configured for conducting the engine oil from the lower chamber to the engine. A bypass hose connector is configured for allowing the engine oil to exit from the upper chamber to the engine.

Oil distribution blocks and oil distribution systems equipped therewith. Such an oil distribution block includes a rigid block body configured to be secured to a cylinder head of an engine, an oil inlet, and an oil outlet. The oil inlet is configured to be releasably coupled to a first oil distribution line or a fitting therebetween, receive a flow of oil therefrom, and route the oil to an inlet of a cooling passage of the cylinder head. The oil outlet is configured to be releasably coupled to a second oil distribution line or a fitting therebetween, receive a flow of oil from an outlet of the cooling passage of the cylinder head, and route the oil to the second oil distribution line. The oil inlet and the oil outlet are configured to threadably couple with the first and second oil distribution lines, respectively, or the fittings therebetween.

A fluid cell for an assembly and for filtering oil includes a fluid cell housing with a housing opening and partly surrounds a housing interior, a housing cover attached releasably to the fluid cell housing for closing the housing opening, and a filter device arranged in the housing interior for filtering the oil, in which a filter element is arranged and which fluidically communicates with a raw oil line for conducting the oil to be filtered into the filter device and with a clean oil line for conducting the filtered oil out of the filter device. An oil reservoir is arranged in the housing interior for storing oil, which fluidically communicates with an oil reservoir line for conducting oil out of the oil reservoir, and a fluid cell valve device for closing and opening the raw oil line, the clean oil line, and the oil reservoir line.

An additive manufactured heat exchanger includes a monolithic housing defining an outer surface, a plurality of first fluid passageways extending between a first fluid inlet and a first fluid outlet, and a plurality of second fluid passageways extending between a second fluid inlet and a second fluid outlet. A cross section of the outer surface defines an irregular shape, the plurality of first fluid passageways and the plurality of second fluid passageways define a convoluted flow matrix within the monolithic housing, and the outer surface of the monolithic housing is complimentary to a space between at least two components of a vehicle. The monolithic housing can also include a plurality of third fluid passageways extending between a third fluid inlet and a third fluid outlet.

A device for reciprocatingly removing and replenishing fluid in circulating system of an hydraulic mechanism that includes at least two processing tanks, at least one air pressure regulator and connector releasably engageable with a pressurized air source, at least one vacuum generator, at least one pressure regulator; and means for removing the fluid from the circulating system at vacuum.

A method for thermal management of a motor vehicle engine includes one or more of the following: determining a current lube oil temperature; determining a lube oil temperature for optimal friction; turning on piston cooling jets based on the current lube oil temperature and the lube oil temperature for optimal friction; and turning off the piston cooling jets.

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.