ENGINE OIL SUPPLY APPARATUS

摘要

An oil supply apparatus includes: an oil pump; a main oil supply path; a sub oil supply path connected to the main oil supply path; a first oil supply section which is connected to the main oil supply path and which supplies oil to a crank bearing section of a specific crank journal; a second oil supply section which is connected to the sub oil supply path and which supplies oil to a crank bearing section of a crank journal other than the specific crank journal; and a control apparatus which sets, as a target oil pressure, a highest required oil pressure among required oil pressures required from a plurality of hydraulic operating sections in accordance with an operation state of the engine, and which controls the discharge amount of the oil pump so that an oil pressure detected by an oil pressure sensor equals the target oil pressure.

主权项

1. An engine oil supply apparatus which is provided with a crank shaft including a plurality of crank journals and in which oil is introduced to inside of the crank shaft from a specific crank journal from among the plurality of crank journals and the oil is supplied to a crank pin through an inside passage formed in the crank shaft,
the oil supply apparatus comprising: an oil pump which is capable of controlling a discharge amount; a main oil supply path into which oil discharged from the oil pump is introduced; a sub oil supply path which is connected to a downstream side of the main oil supply path in an oil flow direction; a first oil supply section which is connected to the main oil supply path and which supplies oil to a crank bearing section of the specific crank journal from among the plurality of crank journals; a second oil supply section which is connected to the sub oil supply path and which supplies oil to a crank bearing section of the crank journal other than the specific crank journal; a plurality of hydraulic operating sections which include at least the first oil supply section and the second oil supply section; an oil pressure sensor which detects an oil pressure of the main oil supply path; and a control apparatus which sets, as a target oil pressure, a highest required oil pressure among required oil pressures required from the plurality of hydraulic operating sections in accordance with an operation state of the engine, and which controls the discharge amount of the oil pump so that the oil pressure detected by the oil pressure sensor equals the target oil pressure.