| 摘要 |
An internal combustion engine (10) is provided with a control apparatus (40) for controlling a variable oil pump (20) and an auxiliary brake system (30). The amount of engine oil supplied by the variable oil pump (20) is increased when the internal combustion engine (10) is operating in: a high load state; a state in which the actual fuel injection amount (Qm)(or the instructed fuel injection amount (Qt)) is zero during deceleration; and a state in which the actual fuel injection amount (Qm)(or the instructed fuel injection amount (Qt)) is zero when an auxiliary brake is activated. Thus, in the high load state, which requires a large supply amount of engine oil, lubrication and cooling can be performed with a sufficient amount of engine oil, and in the state in which the auxiliary brake is activated, the energy of an engine drive shaft (12) can be recovered for driving the variable oil pump (20) when fuel is definitely not being injected, so that the supply amount of engine oil can be increased without worsening of fuel efficiency, and the required braking force can be efficiently obtained. |
