To suppress degradation in fuel economy and increase in particulate number of PM, while suppressing increase in dilution rate of lubricating oil.
The control device for an internal combustion engine includes: an oil jet 46 jetting the lubricating oil toward a piston 20 reciprocating in a cylinder 12 of the internal combustion engine 10; an injection amount calculation means 72 calculating a total injection amount of fuel injected from a fuel injection valve 38 for injecting the fuel into the cylinder 12, from the start of the internal combustion engine 10; an oil temperature sensor 60 as an oil temperature measurement means measuring an oil temperature of the lubricating oil; a working fluid temperature region determination means 74 determining a working fluid temperature region A of the oil jet 46 according to the total injection amount of the fuel, from the start of the internal combustion engine 10; and an oil jet control means 76 determining whether or not the oil temperature measured by the oil temperature sensor 60 is within the working fluid temperature region A according to the total injection amount calculated by the injection amount calculation means 72, and controlling operation of the oil jet 46 according to the determination result.
| JP2009092006A | 2009-04-30 | |||
| JP2008298001A | 2008-12-11 | |||
| JPH10317936A | 1998-12-02 | |||
| JP2004293509A | 2004-10-21 | |||
| JP2008025403A | 2008-02-07 | |||
| JPS60142007A | 1985-07-27 | |||
| JP2006183539A | 2006-07-13 |
Toshiyuki Hatta
High Yoshitaka Hayashi
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