Engine intake system control device and control method thereof
AssigneeTranstron Inc.
InventorsMasatoshi Ogawa, Takuma Degawa
Life of this patent
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Abstract
An engine intake system control device configured to control an intake system of an engine, having a map function that inputs at least a fuel injection pressure of the engine, a fresh air flow, and a compressor outlet temperature of a supercharger, and outputs a control gain; and a control unit that inputs the control gain and a deviation between a controlled variable of the intake system of the engine and a target value thereof, and controls a manipulated variable of the intake system of the engine.
Claims13
An engine intake system control device configured to control an intake system of an engine, comprising:
- a map function configured to input at least a fuel injection pressure of the engine, a fresh air flow, and a compressor outlet temperature of a supercharger, and output a control gain, the control gain including at least one of a proportional gain, an integral gain and a differential gain, and the map function including a map that includes a plurality of control gains corresponding to a plurality of combinations of the fuel injection pressure of the engine, the fresh air flow, and the compressor outlet temperature of a supercharger respectively;
- and
- a controller configured to input the control gain and a deviation between a controlled variable of the intake system of the engine and a target value of the intake system, and variably control a manipulated variable of the intake system of the engine in proportion to at least one of a first value which the controller multiplies the deviation by the proportional gain to obtain, a second value which the controller multiplies the deviation by the integral gain to obtain, and a third value which the controller multiplies the deviation by the differential gain to obtain.
An engine intake system control method for controlling an intake system of an engine, the method including processing for:
- inputting at least a fuel injection pressure of the engine, a fresh air flow, and a compressor outlet temperature of a supercharger, and outputting a control gain by referring to a map function, the control gain including at least one of a proportional gain, an integral gain and a differential gain, and the map function including a map that includes a plurality of control gains corresponding to a plurality of combinations of the fuel injection pressure of the engine, the fresh air flow, and the compressor outlet temperature of a supercharger respectively;
- and
- inputting the control gain and a deviation between a controlled variable of the intake system of the engine and a target value thereof, executing at least one of multiplying the deviation by the proportional gain to obtain a first value, multiplying the deviation by the integral gain to obtain a second value, and multiplying the deviation by the differential gain to obtain a third value, and variably controlling a manipulated variable of the intake system of the engine in proportion to at least one of the first value, the second value, and the third value.
Dependencies are inferred from the claim text.