| 主权项 |
1. An electronic control unit for an internal combustion engine, the electronic control unit being configured to achieve demands concerning various kinds of functions of the internal combustion engine by coordinative control of a plurality of actuators concerning an operation of the internal combustion engine, the electronic control unit comprising:
a demand generation level that generates and outputs demand values concerning the functions of the internal combustion engine; a physical quantity mediation level that is provided just below the demand generation level, the physical quantity mediation level aggregating and mediating demand values expressed with a predetermined physical quantities of the demand values; a controlled variable setting level that is provided just below the physical quantity mediation level, the controlled variable setting level setting controlled variables of the actuators based on the mediated demand values; and a controlled variable mediation level that is provided just below the controlled variable setting level, the demand values expressed with the controlled variables of the actuators of the demand values output from the demand generation level being transmitted to the controlled variable mediation level not through the physical quantity mediation level, the controlled variable mediation level aggregating and mediating demand values expressed with controlled variables of the actuators set on the controlled variable setting level and the demand values expressed with the controlled variables of the actuators of the demand values that are transmitted to the controlled variable mediation level not through the physical quantity mediation level for each of the controlled variables; wherein the electronic control unit includes a hierarchical control structure, and in the hierarchical control structure, the demand values output from the demand generation level are transmitted in a single direction from a higher level to a lower level in order of the demand generation level, the physical quantity mediation level and the controlled variable setting level, and wherein the controlled variable mediation level includes a fundamental injection control mediation portion and a startup injection control mediation portion, the fundamental injection control mediation portion mediating controlled variables of injections concerning an operation of at least one of fuel injection valves which is one of the actuators during a driving of the internal combustion engine, and the startup injection control mediation portion mediating the controlled variables of the injections upon startup of the internal combustion engine, wherein at least one of the fuel injection valve is disposed so as to inject fuel directly into a cylinder; the electronic control unit distinguishes the demands expressed with the controlled variables of the injections between demands with a high priority and demands with a low priority; the electronic control unit changes a total injection amount of fuel and does not change a frequency of injections of fuel in the demands with the low priority; the electronic control unit changes both the total injection amount of the fuel and the frequency of injections of fuel in the demands with the high priority; and after the controlled variables of the injections concerning the demands with the low priority are mediated, the fundamental injection control mediation portion mediates both the controlled variables of the injections concerning the mediated demands with the low priority and the controlled variables of the injections concerning the demands with the high priority. |
