초록 ▼

An engine balancer system is provided in which a balancer housing disposed so as to face an oil pan beneath a crankshaft is formed by joining an upper housing and a lower housing via mating faces, and the height of the mating faces is lower on a vehicle front side than on a vehicle rear side. Oil di

An engine balancer system is provided in which a balancer housing disposed so as to face an oil pan beneath a crankshaft is formed by joining an upper housing and a lower housing via mating faces, and the height of the mating faces is lower on a vehicle front side than on a vehicle rear side. Oil discharge holes or discharging oil that is within the balancer housing are formed in the mating faces on the higher side of the balancer housing and in the upper housing above the mating faces on the lower side of the balancer housing. This enables the position of the oil discharge hole on the lower side to be as high as possible, thereby suppressing penetration of oil into the interior of the balancer housing through the oil discharge hole.

대표청구항 ▼

What is claimed: 1. An engine balancer system for an engine having a crankshaft, the engine balancer system comprising a balancer housing disposed below the crankshaft and exposed to an oil pan, wherein said balancer housing is formed by connecting an upper housing and a lower housing together at m

What is claimed: 1. An engine balancer system for an engine having a crankshaft, the engine balancer system comprising a balancer housing disposed below the crankshaft and exposed to an oil pan, wherein said balancer housing is formed by connecting an upper housing and a lower housing together at mating faces, the balancer housing being inclined such that a height of the mating faces on one of opposite sides of the balancer housing is different from that on the other side, wherein holes for communicating inside and outside of the balancer housing with each other are provided on a higher side and a lower side of the balancer housing, respectively, at positions above an oil level in the oil pan, wherein the hole provided on said lower side of the balancer housing is located above said mating faces and on one side of a balancer shaft which is provided inside the balancer housing, said hole provided on said lower side of the balancer housing being formed on the upper housing so as to be open at an upper face of the upper housing and elongated along an axial direction of the balancer shaft. 2. The engine balancer system according to claim 1, wherein a baffle plate is provided for preventing the oil level in said oil pan from being disturbed, and at least a part of the baffle plate extends to a position covering said hole provided on said lower side of the balancer housing. 3. The engine balancer system according to claim 2, wherein said baffle plate is formed into a substantially rectangular shape with a longer side thereof extending along a longitudinal direction of said elongated hole, said baffle plate being fixed to the balancer housing. 4. An engine balancer system for an engine having a crankshaft, the engine balancer system comprising a balancer housing disposed below the crankshaft and exposed to an oil pan, wherein said balancer housing is formed by connecting an upper housing and a lower housing together at mating faces, the balancer housing being inclined such that a height of the mating faces on one of opposite sides of the balancer housing is different from that on the other side, wherein holes for communicating inside and outside of the balancer housing with each other are provided on a higher side and a lower side of the balancer housing, respectively, at positions above an oil level in the oil pan, wherein a plurality of said holes provided on said lower side of the balancer housing are respectively located above said mating faces and on one side of a balancer shaft which is provided inside the balancer housing, each of said holes provided on said lower side of the balancer housing being formed on the upper housing so as to be open at an upper face of the upper housing and elongated along an axial direction of the balancer shaft. 5. The engine balancer system according to claim 4, wherein a single baffle plate is provided for preventing the oil level in said oil pan from being disturbed, and at least a part of the baffle plate extends to a position covering said plurality of holes provided on said lower side of the balancer housing. 6. The engine balancer system according to claim 5, wherein said single baffle plate is formed into a substantially rectangular shape with a longer side thereof extending along a longitudinal direction of each of said elongated holes, said baffle plate being fixed to the balancer housing. 7. The engine balancer system according to claim 5, wherein said single baffle plate is connected to an upper face of the upper housing by bolts which are used to join the upper and lower housings together. 8. An engine balancer system for an engine having a crankshaft which is to be disposed along a lateral direction of a vehicle body, the engine balancer system comprising a balancer housing disposed below the crankshaft and exposed to an oil pan, wherein said balancer housing is formed by connecting an upper housing and a lower housing together at mating faces, the balancer housing being inclined such that a height of the mating faces on one of opposite sides of the balancer housing is different from that on the other side, wherein holes for communicating inside and outside of the balancer housing with each other are provided on a higher side and a lower side of the balancer housing, respectively, at positions above an oil level in the oil pan, said higher side being directed toward a front side of the vehicle body and said lower side being directed toward a rear side of the vehicle body, wherein the hole provided on said lower side of the balancer housing is located above said mating faces and on one side of a balancer shaft which is provided inside the balancer housing, said hole provided on said lower side of the balancer housing being formed on the upper housing so as to be open at an upper face of the upper housing and elongated along an axial direction of the balancer shaft. 9. The engine balancer system according to claim 8, wherein a baffle plate is provided for preventing the oil level in said oil pan from being disturbed, and at least a part of the baffle plate extends to a position covering said hole provided on said lower side of the balancer housing. 10. The engine balancer system according to claim 9, wherein said baffle plate is formed into a substantially rectangular shape with a longer side thereof extending along a longitudinal direction of said elongated hole, said baffle plate being fixed to the balancer housing. 11. An engine balancer system for an engine having a crankshaft, the engine balancer system comprising a balancer housing disposed below the crankshaft and exposed to an oil pan, wherein said balancer housing is formed by connecting an upper housing and a lower housing together at mating faces, wherein fluid holes are provided on an upper face of the upper housing and elongated along an axial direction of the crankshaft, at least a first one and a second one of the fluid holes being aligned with each other in the axial direction of the crankshaft. 12. The engine balancer system according to claim 11, wherein a balancer shaft is housed within the balancer housing and is provided with, going from one end to the other, a first journal, a gear, a first balancer weight, a second journal and a second balancer weight, wherein said first fluid hole of the fluid holes is formed sidewardly of said first balancer weight to extend for a distance substantially corresponding to a length of the first balancer weight and said second fluid hole of the fluid holes is formed sidewardly of said second balancer weight to extend for a distance substantially corresponding to a length of the second balancer weight, wherein oil is discharged to an outside of the balancer housing through the fluid holes by rotation of the balancer shaft. 13. The engine balancer system according to claim 12, wherein a rib is formed on the upper face of the upper housing between the first and second fluid holes, said rib connecting first and second bolt bosses for securing said balancer housing to an engine block. 14. The engine balancer system according to claim 13, wherein bolts penetrating through said first and second bolt bosses are commonly used for securing the upper and lower housings to a lower block as said engine block. 15. The engine balancer system according to claim 11, wherein a balancer shaft is housed within the balancer housing and is provided with, going from one end to the other, a first journal, a gear, a first balancer weight, a second journal and a second balancer weight, wherein said first fluid hole of the fluid holes is formed sidewardly of said first balancer weight to extend for a distance substantially corresponding to a length of the first balancer weight and said second fluid hole of the fluid holes is formed sidewardly of said second balancer weight to extend for a distance substantially corresponding to a length of the second balancer weight. 16. The engine balancer system according to claim 15, wherein a rib is formed on the upper face of the upper housing between the first and second fluid holes, said rib connecting first and second bolt bosses for securing said balancer housing to an engine block. 17. The engine balancer system according to claim 16, wherein bolts penetrating through said first and second bolt bosses are commonly used for securing the upper and lower housings to a lower block as said engine block.