Lubricating and breather system in engine

Details Lubricating and breather system in engine Lubricating and breather system in engine

F - Mech Eng,Light,Heat,Weapons

01

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F01M 3/00 (2006.01) F01M 13/02 (2006.01) F01M 13/04 (2006.01) F02B 75/16 (2006.01) F02B 75/00 (2006.01)

Patent

CA 2220613

A lubricating and breather system is provided for use with a crankcase and a cylinder block in both a horizontal-type engine and a vertical-type engine, in which the discharge of a blow-by gas and the circulation of oil separated from the blow-by gas into the crankcase can be reliably performed. When the engine is of a vertical-type, it includes a crankcase which is disposed so that a second bearing boss is located above a first bearing boss. The second bearing boss is provided with an annular chamber into which splashed oil produced in the crankcase is passed. A breather chamber is provided in a cylinder block to communicate with the annular chamber, and includes a first return bore provided in a portion thereof which is a lowermost portion when in the horizontal-type engine, and a second return bore in a portion thereof which is a lowermost portion when in the vertical-type engine.

Système de lubrification et reniflard pour utilisation avec un carter et un bloc-cylindres dans un moteur horizontal ou un moteur vertical, et permettant de réaliser de manière efficace l'évacuation des gaz de carter et la circulation, dans le carter, de l'huile séparée des gaz de carter. Dans le cas d'un moteur de type vertical, le carter est disposé de sorte qu'un deuxième bossage de support est situé au-dessus d'un premier bossage de support. Le deuxième bossage de support comporte un logement annulaire dans lequel passe l'huile qui est projetée par barbotage dans le carter. Une chambre de ventilation ménagée dans le bloc-cylindres communique avec la chambre annulaire et comprend un premier orifice de retour prévu dans une partie de la chambre, qui se trouve à la partie la plus basse dans le cas d'un moteur horizontal, et un deuxième orifice de retour dans une partie de la chambre, qui est dans la partie la plus basse dans le cas d'un moteur vertical.

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