An operation valve includes a valve that controls the flow of a fluid, a cylindrical operator that operates opening and closing of the valve by rotating the operator in a peripheral direction, and has a first step parallel to a central axis of the operator, a storage that stores the valve, includes a flow channel of the fluid therein, and has a second step corresponding to the first step on an outer periphery of the storage in a first state in which the valve is closed, and an elastic body that urges the operator toward the storage.

An oil tank system (100) for a gas turbine engine is provided. The oil tank system (100) includes an oil tank (102) having an upper tank portion (112) and a lower tank portion (114), a waisted section (118) being provided between the upper tank portion (112) and the lower tank portion (114). Oil is received by a de-aerator (104) of the system (100) which supplies de-aerated oil to the upper tank portion (112). The waisted section (118) includes an upper face (119) configured to catch oil drips from above the waisted section (118) and to guide oil to a lower face (121) of the waisted section (118).

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.

An outboard motor includes a first case accommodating an engine and an upper housing below the first case. At least a portion of an exhaust passage is in the upper housing and extends downward from the engine. A second case is below the upper housing. The second case includes a torpedo portion, an exhaust inlet, an exhaust outlet, and an exhaust chamber. The torpedo portion includes an internal space and a rear end. A propeller shaft is in the internal space of the torpedo portion. The rear end of the torpedo portion is forward of at least a portion of the exhaust passage as seen in a side view. The exhaust passage is connected to the exhaust inlet. The exhaust outlet communicates with the internal space of the torpedo section. The exhaust chamber communicates the exhaust inlet with the exhaust outlet.

The present invention provides a preheating, lubricating, and cooling system that oil essentially used for lubrication, wear resistance, and cooling of an internal combustion engine, industrial equipment, or a mobile vehicle is used as a preheating medium, a manager supplies the oil most optimized for load operation of equipment through a preheating system separated from the existing main oil system, and an oil supply path uses a path of the existing oil system, so that the preheating and the load operation are facilitated during an extremely cold season and an extremely hot season, and a normal operation is possible even in a case of being immediately stopped after the operation.

To achieve an improved rigidity, the an oil pan (3) for forming a lower end part of an internal combustion engine (1) comprises a bottom wall (6) and a side wall (7) extending from a peripheral edge of the bottom wall, wherein the bottom wall includes a pair of first planar surface portions (35) extending in a lateral direction and provided on either end of the bottom wall with respect to a fore and aft direction orthogonal to the lateral direction, and a curved surface portion (36) recessed downward with respect to the first planar surface portions.

A cooling system for an outboard motor of a marine vessel is provided. The cooling system includes an oil sump housing having an inner housing wall and an outer housing wall. The inner housing wall defines a transmission mounting cavity, and the inner housing wall and the outer housing wall defines an oil containment cavity that at least partially surrounds the transmission mounting cavity. The cooling system further includes a first sprayer nozzle and a second sprayer nozzle. Both the first sprayer nozzle and the second sprayer nozzle are coupled to the oil sump housing and configured to spray cooling fluid within the transmission mounting cavity onto an inner surface of the inner housing wall.

An oil sump housing for an outboard motor of a marine vessel is provided. The oil sump housing includes an upper mounting flange including multiple upper mounting holes, a lower mounting flange including multiple lower mounting holes, and an inner housing wall and an outer housing wall extending between the upper mounting flange and the lower mounting flange. The inner housing wall defines a transmission mounting cavity, and the inner housing wall and the outer housing wall define an oil containment cavity that at least partially surrounds the transmission mounting cavity.

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.

A system for providing lubrication to a machine. The system comprises at least one ultrasound sensor positioned to detect sound emanating from at least one lubrication point of the machine, and at least one auto-lubrication device configured to provide lubrication to the at least one lubrication point. The at least one auto-lubrication device is controlled to provide lubrication to the at least one lubrication point based at least in part on sound detection data from the at least one ultrasound sensor.