A piston pin is provided that includes a pin oil channel to which oil is supplied from the connecting rod. A piston is provided that includes a pin boss, an oil groove formed in a pin bore surface, and a communication oil channel that connects a cooling channel that is provided closer to a combustion chamber than the piston pin and the oil groove to each other. The pin oil channel opens in the outer surface of the piston pin at a point corresponding to the oil groove. In the view of the piston from the direction of the piston pin axis, the oil groove is formed in the pin bore surface at a position closer to a crankcase than a second straight line and is not formed in a part of the pin bore surface that is closer to the combustion chamber than the second straight line.

A lubricant assembly that is configured as part of a lubricating system that flings, or slings, fluid lubricants about the interior of compressors. In one embodiment, the lubricant assembly includes a lubricant guide member with a body member that has a pair of peripheral side members with angled surfaces. The construction is amenable to more consistent fabrication constraints (e.g., tolerances), as well as to offer features that can improve operation of the lubricating system, e.g., as operative in the compressors. In use, the lubricant guide member is disposed transverse to a longitudinal axis of a shaft that is configured to rotate a slinger member to fling the lubricant. This configuration captures lubricant that falls downwardly from other parts of the compressors. The angled surfaces of the side members direct this captured lubricant toward the shaft, and other rotating components, of the lubricating system.

A lubricant assembly that is configured as part of a lubricating system that flings, or slings, fluid lubricants about the interior of compressors. In one embodiment, the lubricant assembly includes a lubricant guide member with a body member that has a pair of peripheral side members with angled surfaces. The construction is amenable to more consistent fabrication constraints (e.g., tolerances), as well as to offer features that can improve operation of the lubricating system, e.g., as operative in the compressors. In use, the lubricant guide member is disposed transverse to a longitudinal axis of a shaft that is configured to rotate a slinger member to fling the lubricant. This configuration captures lubricant that falls downwardly from other parts of the compressors. The angled surfaces of the side members direct this captured lubricant toward the shaft, and other rotating components, of the lubricating system.

The bearing apparatus 1 includes a crankshaft having multiple journals, main bearings supporting the crankshaft, and a bearing housing. The plurality of journals include a first journal with a lubricating oil passage and a second journal without a lubricating oil passage. The first and second journals are supported by first and second main bearings, respectively. The bearing housing is constituted by an Al-alloy upper housing and an Fe-alloy lower housing. The depth of the oil groove of the upper half bearing of the second main bearing at least in a ±45° region is equal to or smaller than a half of the depth of the oil groove of the upper half bearing of the first main bearing in the ±45° region.

A continuous variable valve timing apparatus may include a camshaft, a cam device on which a cam is formed respectively and of which the camshaft is inserted thereto, wherein a relative phase angle with respect to the camshaft is variable, an inside bracket configured to transmit rotation of the camshaft to the cam device, a lifter in which the inside bracket is rotatably inserted therein and on which a cylinder opening and a shaft opening are formed thereon, a control shaft parallel to the camshaft and to which a control rod, inserted into the shaft opening, is eccentrically formed, a control cylinder on which a control rod opening where the control rod is inserted therein is formed and inserted into the cylinder opening, a guide portion guiding movement of the lifter and a controller selectively rotating the control shaft, wherein the lifter may move.

A continuous variable valve timing apparatus may include a camshaft, a cam device on which a cam is formed respectively and of which the camshaft is inserted thereto, wherein a relative phase angle with respect to the camshaft is variable, an inside bracket configured to transmit rotation of the camshaft to the cam device, a lifter in which the inside bracket is rotatably inserted therein and on which a cylinder opening and a shaft opening are formed thereon, a control shaft parallel to the camshaft and to which a control rod, inserted into the shaft opening, is eccentrically formed, a control cylinder on which a control rod opening where the control rod is inserted therein is formed and inserted into the cylinder opening, a guide portion guiding movement of the lifter and a controller selectively rotating the control shaft, wherein the lifter may move.

A continuous variable valve duration apparatus may include a camshaft, a cam device, of which the camshaft is inserted thereto, of which a phase angle with respect to the camshaft is variable, and the cam device on which a cam key is formed, an inside bracket transmitting rotation of the camshaft to the cam device and on which a first slide opening and a second sliding opening are formed respectively, a slider housing in which the inside bracket is rotatably inserted and of which relative position with respect to the camshaft is variable, a controller selectively changing the relative position of the slider housing, a cam pin of which a cam key opening for the cam key to be slidably inserted thereto is formed and slidably inserted into the second sliding opening and a slider pin rotatably inserted into the first sliding opening and slidably inserted into the camshaft.

A continuous variable valve duration apparatus may include a camshaft, a cam device, of which the camshaft is inserted thereto, of which a phase angle with respect to the camshaft is variable, and the cam device on which a cam key is formed, an inside bracket transmitting rotation of the camshaft to the cam device and on which a first slide opening and a second sliding opening are formed respectively, a slider housing in which the inside bracket is rotatably inserted and of which relative position with respect to the camshaft is variable, a controller selectively changing the relative position of the slider housing, a cam pin of which a cam key opening for the cam key to be slidably inserted thereto is formed and slidably inserted into the second sliding opening and a slider pin rotatably inserted into the first sliding opening and slidably inserted into the camshaft.

A lubricating oil passage structure for a bearing of an oil cooled rotating machine includes a bearing (114) arranged in the center of a bracket (111) to rotatably support a rotary shaft (101). Protruding ribs (116, 117, 117a) are spirally arranged on the inner surface of the bracket (111). Also, a bearing rib (112) having an oil passage groove (113) for supplying the bearing (114) with lubricating oil is formed on the inner surface of the bracket (111). An upper projection hole (110) is formed in the upper portion of the bracket (111) for introducing the lubricating oil. The protruding ribs located on the right and left of the upper projection hole (110) in the circumferential direction are the upper protruding ribs (116) which function as guides for guiding the lubricating oil to the bearing rib. Therefore, the lubricating oil passage structure constitutes a structure that captures the lubricating oil and guides the oil to the bearing (114) without reducing the support rigidity of the bearing, while also constituting a rib structure capable of both improving the support rigidity of the bearing and inhibiting failure of the bearing (114).

A lubricating oil passage structure for a bearing of an oil cooled rotating machine includes a bearing (114) arranged in the center of a bracket (111) to rotatably support a rotary shaft (101). Protruding ribs (116, 117, 117a) are spirally arranged on the inner surface of the bracket (111). Also, a bearing rib (112) having an oil passage groove (113) for supplying the bearing (114) with lubricating oil is formed on the inner surface of the bracket (111). An upper projection hole (110) is formed in the upper portion of the bracket (111) for introducing the lubricating oil. The protruding ribs located on the right and left of the upper projection hole (110) in the circumferential direction are the upper protruding ribs (116) which function as guides for guiding the lubricating oil to the bearing rib. Therefore, the lubricating oil passage structure constitutes a structure that captures the lubricating oil and guides the oil to the bearing (114) without reducing the support rigidity of the bearing, while also constituting a rib structure capable of both improving the support rigidity of the bearing and inhibiting failure of the bearing (114).