Abstract: A thrust sliding bearing may include a thrust receiving surface comprising radial oil grooves, and a resin portion, the resin portion comprising a plurality of resin sheets in an area defined by the oil grooves of the thrust receiving surface, the plurality of resin sheets being laminated. Circumferential widths of the plurality of resin sheets may increase upwardly from a bottom resin sheet. A circumferential width of the resin portion may decrease upwardly.

Abstract: There is provided an oil feed member capable of preventing lubricant from being excessively fed from an oil feed member to lubrication portions of valve gears, and a lubricant feed mechanism for an engine provided with the same. An oil feed member for feeding lubricant to lubrication portions of valve gears for opening and closing intake valves and exhaust valves of an engine, the oil feed member including: an upper panel member and a lower panel member laid over each other; and an oil feed passage formed by recessing laid surfaces of the upper panel member and the lower panel member, wherein the oil feed passage includes basis oil passages formed on a downstream side, and an introduction oil passage formed on an upstream side and having a smaller lubricant flow area than that of the basis oil passages.

Abstract: Provided is a lubricant feed mechanism for a turbocharger, the mechanism that can reduce work of an oil pump while preventing an excessive supply of lubricant to a bearing part. The lubricant feed mechanism for a turbocharger, the mechanism of feeding lubricant to a bearing part that rotatably supports a shaft connecting a compressor wheel and a turbine wheel, includes: an oil supply passage that guides the lubricant fed under pressure from the oil pump to the bearing part; and a flow control valve provided to the oil supply passage for adjusting the amount of the lubricant by throttling the flow passage of the lubricant based on a pressure of the lubricant flowing through the oil supply passage.

Abstract: A crank washer may be provided for supporting a load exerted in the thrust direction of a crankshaft, wherein an oil groove is radially formed in a thrust receiving surface, a first resin sheet, a second resin sheet, and a third resin sheet are laminated in a tapered land region TP partitioned by the oil groove, and the widths of the laminated first resin sheet, second resin sheet, and third sheet in the circumferential direction gradually decrease in the direction toward the top layer.

Abstract: There is provided a turbocharger bearing housing having no necessity to use a core and capable of achieving cost reduction. A bearing housing of a turbocharger contains a shaft connecting a turbine and a compressor and turnably supports the shaft. The bearing housing of the turbocharger is divided into a turbine-side housing disposed at a turbine side and a compressor-side housing disposed at a compressor side. The turbine-side housing and the compressor-side housing is subjected to machining to thereby form a cooling water passage for supplying cooling water and a lubricating oil passage for supplying lubricating oil.

Abstract: There is provided a turbocharger which can reduce whirl vibration. The turbocharger includes a shaft connecting a turbine and a compressor, a bearing housing having a bearing portion turnably supporting the shaft, and a sliding bearing interposed between the shaft and the bearing portion. The bearing portion is formed of an aluminum-based material, the shaft is formed of a steel material, and the sliding bearing is formed of a copper-based material.

Abstract: There is provided a method for manufacturing a turbocharger bearing housing which can prevent a collapsible core from being damaged when molten metal is cast in the mold. The method for manufacturing a bearing housing of a turbocharger is that the bearing housing of the turbocharger is formed with a cooling passage for circulating cooling liquid by casting using a collapsible core. The collapsible core includes the end part forming portions (a one end forming portion and an other end forming portion) corresponding to the end portions of the cooling passage and having a substantially elliptical cross-section, and a fixing portion holding the end part forming portions and being embedded in a mold and fixed to the mold.

Abstract: There is provided an oil feed member capable of preventing lubricant from being excessively fed from an oil feed member to lubrication portions of valve gears, and a lubricant feed mechanism for an engine provided with the same. An oil feed member for feeding lubricant to lubrication portions of valve gears for opening and closing intake valves and exhaust valves of an engine, the oil feed member including: an upper panel member and a lower panel member laid over each other; and an oil feed passage formed by recessing laid surfaces of the upper panel member and the lower panel member, wherein the oil feed passage includes basis oil passages formed on a downstream side, and an introduction oil passage formed on an upstream side and having a smaller lubricant flow area than that of the basis oil passages.

Abstract: There is provided a lubricant feed mechanism capable of improving the mechanical efficiency of a supercharger. A lubricant feed mechanism for feeding lubricants to an engine and a supercharger mounted on the engine includes a block-side oil passage for feeding the lubricant to a cylinder block of the engine, a block-side oil pan that is disposed in a path of the block-side oil passage and stores the lubricant flowing through the block-side oil passage, a head-side oil passage for feeding the lubricant to the supercharger, and a head-side oil pan that is disposed in a path of the head-side oil passage and stores the lubricant flowing through the head-side oil passage, the block-side oil passage and the head-side oil passage being configured to be independent of each other.

Abstract: Provided is a lubricant feed mechanism for a turbocharger, the mechanism that can reduce work of an oil pump while preventing an excessive supply of lubricant to a bearing part. The lubricant feed mechanism for a turbocharger, the mechanism of feeding lubricant to a bearing part that rotatably supports a shaft connecting a compressor wheel and a turbine wheel, includes: an oil supply passage that guides the lubricant fed under pressure from the oil pump to the bearing part; and a flow control valve provided to the oil supply passage for adjusting the amount of the lubricant by throttling the flow passage of the lubricant based on a pressure of the lubricant flowing through the oil supply passage.

Abstract: There is provided a turbocharger bearing housing which is capable of reducing the weight thereof. A bearing housing of a turbocharger contains a shaft connecting a turbine and a compressor, and turnably supports the shaft. The bearing housing of the turbocharger is divided into a turbine-side housing disposed at a turbine side and a compressor-side housing disposed at a compressor side. The compressor-side housing is formed of an aluminum-based material.

Abstract: There is provided a method for manufacturing a turbocharger bearing housing which can prevent a collapsible core from being damaged when molten metal is cast in the mold. The method for manufacturing a bearing housing of a turbocharger is that the bearing housing of the turbocharger is formed with a cooling passage for circulating cooling liquid by casting using a collapsible core. The collapsible core includes the end part forming portions (a one end forming portion and an other end forming portion) corresponding to the end portions of the cooling passage and having a substantially elliptical cross-section, and a fixing portion holding the end part forming portions and being embedded in a mold and fixed to the mold.

Abstract: There is provided a turbocharger bearing housing having no necessity to use a core and capable of achieving cost reduction. A bearing housing of a turbocharger contains a shaft connecting a turbine and a compressor and turnably supports the shaft. The bearing housing of the turbocharger is divided into a turbine-side housing disposed at a turbine side and a compressor-side housing disposed at a compressor side. The turbine-side housing and the compressor-side housing is subjected to machining to thereby form a cooling water passage for supplying cooling water and a lubricating oil passage for supplying lubricating oil.

Abstract: There is provided a turbocharger which can reduce whirl vibration. The turbocharger includes a shaft connecting a turbine and a compressor, a bearing housing having a bearing portion turnably supporting the shaft, and a sliding bearing interposed between the shaft and the bearing portion. The bearing portion is formed of an aluminum-based material, the shaft is formed of a steel material, and the sliding bearing is formed of a copper-based material.