Internal-combustion-engine control apparatus
The internal-combustion-engine control apparatus has an intake-air-temperature correction control apparatus including a first-order advance compensation means that calculates an advance-compensation amount for an intake-air temperature detection signal, a time constant determination means that calculates a time constant of the first-order advance compensation means, and a first-order delay compensation means that receives a calculation value of the first-order advance compensation means; the time constant determination means includes a time constant setting means that sets a time constant, based on an intake-air flow rate detection signal, an upper-limit-value setting means that sets an upper limit value of the time constant calculated by the time constant determination means, and a minimum value selection means that selects and outputs a minimum value of a time constant set by the time constant setting means and the upper limit value set by the upper-limit-value setting means.
1. An internal-combustion-engine control apparatus comprising:
an intake-air physical quantity measurement apparatus having
a hot-film mass flow sensor that detects a flow rate of intake air to be sucked into an internal combustion engine and then outputs an intake-air flow rate detection signal, and
a thin-film temperature sensor that detects a temperature of the intake air and then outputs an intake-air temperature detection signal; and
a first-order advance compensator that applies advance compensation to the intake-air temperature detection signal by use of the intake-air temperature detection signal,
an intake-air-temperature correction control apparatus having
a memory storing instructions; and
at least one hardware processor configured to execute the instructions to implement:
calculating a time constant for performing the advance compensation and then inputting the time constant to the first-order advance compensator,
applying delay compensation to a calculation value of the first-order advance compensator, and outputting an output as a corrected intake-air temperature detection signal,
setting a first time constant, based on the intake-air flow rate detection signal,
setting a second time constant, based on the intake-air flow rate detection signal, and
selecting any one of the first time constant and the second time constant, and
wherein the first-order advance compensator applies advance compensation to the intake-air temperature detection signal, based on said selected time constant, and controls the internal combustion engine by use of the corrected intake-air temperature detection signal.
2. The internal-combustion-engine control apparatus according to claim 1 ,
wherein the second time constant is set to be smaller than the first time constant, and
wherein in the case where a predetermined time has not elapsed after a power source has been supplied to the intake-air physical quantity measurement apparatus, the intake-air-temperature correction control apparatus selects the second time constant; in the case where the predetermined time has elapsed, the intake-air-temperature correction control apparatus selects the first time constant.
3. The internal-combustion-engine control apparatus according to claim 2 , wherein the intake-air-temperature correction control apparatus is controlled by an ECU for controlling the internal combustion engine.
4. The internal-combustion-engine control apparatus according to claim 2 , wherein the intake-air-temperature correction control apparatus is controlled by a microcomputer or an LSI mounted in the intake-air physical quantity measurement apparatus.
5. The internal-combustion-engine control apparatus according to claim 2 ,
wherein the hot-film mass flow sensor and the thin-film temperature sensor are mounted on one and the same substrate so as to be integrated with each other, and
wherein the hot-film mass flow sensor is heated by a heater to be energized through supply of the power source to the intake-air physical quantity measurement apparatus and detects a flow rate of the intake air, based on an electric quantity supplied to the heater.
6. The internal-combustion-engine control apparatus according to claim 1 , wherein the intake-air-temperature correction control apparatus is controlled by an ECU for controlling the internal combustion engine.
7. The internal-combustion-engine control apparatus according to claim 1 , wherein the intake-air-temperature correction control apparatus is controlled by a microcomputer or an LSI mounted in the intake-air physical quantity measurement apparatus.
8. The internal-combustion-engine control apparatus according to claim 1 ,
wherein the hot-film mass flow sensor and the thin-film temperature sensor are mounted on one and the same substrate so as to be integrated with each other, and
wherein the hot-film mass flow sensor is heated by a heater to be energized through supply of a power source to the intake-air physical quantity measurement apparatus and detects a flow rate of the intake air, based on an electric quantity supplied to the heater.