Control device of internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorZenichiro Mashiki
Life of this patent
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Abstract
An engine ECU executes a program including a step of lowering a pressure of fuel supplied to an in-cylinder injector when it is determined that a degree of dilution of an oil with the fuel is large, a step of calculating a fuel injection period TAUd of the in-cylinder injector with a low fuel pressure, a step of calculating a fuel pressure Pr(0) of the in-cylinder injector required according to an engine speed and a load, a step of calculating a fuel injection period TAUd(0) of the in-cylinder injector with Pr(0), and a step of substituting TAUd(0) for TAUd when TAUd is equal to or larger than TAUd(0).
Claims10
A control device of an internal combustion engine including a first fuel injection mechanism for injecting fuel into a cylinder, and a second fuel injection mechanism for injecting the fuel into an intake manifold, comprising:
- a control unit controlling the fuel injection mechanisms to share the fuel injection between said first and second fuel injection mechanisms based on required conditions of said internal combustion engine;
- and
- a dilution degree estimating unit estimating a degree of dilution of a lubricating oil used for lubricating said internal combustion engine with the fuel, wherein
- said control unit controls the fuel injection mechanisms to suppress said degree and to achieve a required performance of the internal combustion engine when said estimated degree is large.
A control device of an internal combustion engine including first fuel injection means for injecting fuel into a cylinder, and second fuel injection means for injecting the fuel into an intake manifold, comprising:
- control means controlling the fuel injection means to share the fuel injection between said first and second fuel injection means based on required conditions of said internal combustion engine;
- and
- dilution degree estimating means estimating a degree of dilution of a lubricating oil used for lubricating said internal combustion engine with the fuel, wherein
- said control means includes means for controlling the fuel injection means to suppress said degree and to achieve a required performance of the internal combustion engine when said estimated degree is large.
Dependencies are inferred from the claim text.