An oil spray system for use in an engine for spraying directly onto a piston or cylinder wall, includes a supply line having at least one nozzle mounted to the supply line and at least one outlet on the nozzle. The system can include a control device. The control device can be mounted to the supply line. The nozzle and/or outlet is configurable to provide a predetermined spray direction or pattern.

A piston cooling device includes a main body which includes a communication path communicating with an oil passage provided in the internal combustion engine, a nozzle pipe portion which includes an oil injection port for injecting an oil passing through the communication path, toward the piston, and a filter which is provided at an upstream side of the nozzle pipe portion in an oil flow path to filter the oil. The main body includes a cylindrical portion inserted into the oil passage. The filter has a bottomed cylindrical shape in which a filter side surface stands from a filter bottom surface, and is held inside the cylindrical portion. Filter holes are formed in the filter bottom surface and the filter side surface. The filter is disposed such that the filter bottom surface protrudes further upstream side in the oil flow path than a tip end of the cylindrical portion.

An adapter for a roller tappet of an engine may include a body and a support. The body may be combined with a cylinder block of the engine. The body may include oil inlet connected to main gallery of the cylinder block to receive an oil from the main gallery. The support may be extended from one end of the body to support the roller tappet. The support may include a first oil passageway connected to the oil inlet. The first oil passageway is formed through the body and the support to supply the oil supplied from the oil inlet to the roller tappet. Thus, the oil may be supplied from the main gallery to the roller tappet through the oil passageway so that it may not be required to form an additional oil passageway, which may supply the oil to the roller tappet, in the cylinder block.

A FAIR engine system includes an air compressor subsystem where oxygen enriched air is compressed, stored and injected into the chambers of a FAIR engine to accelerate the chemical reaction and to reduce harmful mono-nitrogen oxides (NOx) emission

A piston cooling apparatus for a vehicle, includes: a first gallery that is formed at one side of a cylinder block in a length direction, and receives an oil from an oil pump; a second gallery that is formed at the other side of the cylinder block in a length direction, and supplies the oil into piston cooling jets; and a solenoid valve that is disposed at one side of a hydraulic line of the second gallery. In particular, the solenoid valve bypasses the oil supplied from the first gallery and selectively supplies the oil to the second gallery.

A device lubricates a connecting rod bearing on a crankshaft of an internal combustion engine. The device has a piston having an internal piston cooling fluid channel, and an outlet channel in fluid communication with the fluid channel. The device has a connecting rod, which is connected to the piston in an articulated, in particular pivotable, manner, and has a large connecting rod eye and a connecting channel. The large connecting rod eye is formed for receiving the connecting rod bearing. The connecting channel forms a fluid connection between the outlet channel and the large connecting rod eye so that a fluid, in particular a cooling lubricating fluid (e.g. oil), can be fed, or is fed, from the fluid channel to the large connecting rod eye via the outlet channel and the connecting channel. The connecting rod bearing can be lubricated by cooling oil from the fluid channel of the piston.

A device lubricates a big-end bearing on a crankshaft of an internal combustion engine. The device includes a piston with a fluid channel and an outlet channel fluidically connected thereto, and a connecting rod. The connecting rod has a small connecting rod eye, a large connecting rod eye and a connecting channel. The small connecting rod eye is fluidically connected to the outlet channel. The connecting channel forms a fluidic connection between the small and large connecting rod eyes so that a cooling lubricant fluid can be supplied from the fluid channel to the large connecting rod eye via the outlet channel, the small connecting rod eye and the connecting channel. In this way, the big-end bearing can be lubricated by cooling oil from the fluid channel of the piston.

There is provided a two-piece type oil jet assembly manufactured in such a manner that a nozzle part and a valve part are separated from each other, the nozzle part is changed in accordance with the type of vehicle, the valve part is standardized, and the nozzle and valve parts are combined with each other, thereby providing the effects of reducing manufacturing cost, simplifying a manufacturing process, and ensuring competitiveness in markets.

An engine lubrication structure supplies oil from an oil pump to individual components of an engine in which a balancer shaft is disposed parallel with a crank shaft in a crank case, the engine includes a turbocharger which compresses intake air using exhaust gas of the engine; a main gallery which supplies oil to a bearing of the crank shaft and a bearing of the balancer shaft and a sub-gallery which supplies, to individual components of the engine, oil that has been supplied to the bearing of the balancer shaft are provided in the crank case; and an oil passage which supplies oil to the turbocharger is connected to the sub-gallery.

An oil spray system for use in an engine for spraying directly onto a piston or cylinder wall, includes a supply line having at least one nozzle mounted to the supply line and at least one outlet on the nozzle. The system can include a control device. The control device can be mounted to the supply line. The nozzle and/or outlet is configurable to provide a predetermined spray direction or pattern.