Internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasato IKEMOTO
Life of this patent
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Abstract
An internal combustion engine comprises a fuel injection valve which has a needle, wherein a valve opening speed of the needle during post injection is raised as compared with a valve opening speed of the needle during main injection if a pressure of the fuel is not more than a first predetermined pressure, while the valve opening speed of the needle during the post injection is lowered as compared with the valve opening speed of the needle during the main injection if the pressure of the fuel is not less than a second predetermined pressure that is a pressure larger than the first predetermined pressure, when a requested post injection fuel amount is larger than an injection amount threshold value.
Claims4
An internal combustion engine comprising a fuel injection valve which has a needle and which injects fuel into a cylinder of the internal combustion engine when the valve having the needle is opened, the internal combustion engine further comprising:
- a controller comprising at least one processor configured to raise a valve opening speed of the needle during post injection as compared with a valve opening speed of the needle during main injection if a pressure of the fuel is not more than a first predetermined pressure and comprising at least one processor configured to lower the valve opening speed of the needle during the post injection as compared with the valve opening speed of the needle during the main injection if the pressure of the fuel is not less than a second predetermined pressure that is a pressure larger than the first predetermined pressure, when a requested injection amount of the fuel to be injected by the post injection is larger than an injection amount threshold value, when the post injection is carried out after the main injection of the fuel to be injected from the fuel injection valve.
Dependencies are inferred from the claim text.