Cylinder intake-air quantity calculating apparatus and method for internal combustion engine
First Claim
1. An apparatus for calculating a mass air quantity sucked into one of cylinders of an internal combustion engine, comprising:
- a cylinder sucked mass air quantity calculating section that calculates a mass air quantity sucked into a corresponding one of the cylinders of the engine on the basis of a mass air quantity within an intake manifold and a volume of the corresponding cylinder while performing income and outgo calculations between a mass air quantity flowing into the intake manifold and that flowing out from the intake manifold to calculate the mass air quantity within the intake manifold; and
a correction section that corrects the mass air quantity within the intake manifold calculated as a result of the income and outgo calculations between the mass air quantities during a stop of the engine on the basis of a crank angular position during the stop of the engine to calculate finally the mass air quantity within the intake manifold during the stop of the engine.
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Accused Products
Abstract
In apparatus and method for calculating a mass air quantity sucked into a cylinder of an internal combustion engine, income and outgo calculations between a mass air quantity flowing into an intake manifold and that flowing out from the intake manifold is performed to calculate the mass air quantity within the intake manifold and calculates a mass air quantity sucked into a corresponding cylinder of the engine on the basis of the mass air quantity within the intake manifold and a volume of the corresponding cylinder; and the mass air quantity within the intake manifold calculated as a result of the income and outgo calculations of the mass air quantity during a stop of the engine is corrected on the basis of a crank angular position during a step of the engine to calculate finally the mass air quantity within the intake manifold during the stop of the engine.
8 Citations
19 Claims
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1. An apparatus for calculating a mass air quantity sucked into one of cylinders of an internal combustion engine, comprising:
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a cylinder sucked mass air quantity calculating section that calculates a mass air quantity sucked into a corresponding one of the cylinders of the engine on the basis of a mass air quantity within an intake manifold and a volume of the corresponding cylinder while performing income and outgo calculations between a mass air quantity flowing into the intake manifold and that flowing out from the intake manifold to calculate the mass air quantity within the intake manifold; and
a correction section that corrects the mass air quantity within the intake manifold calculated as a result of the income and outgo calculations between the mass air quantities during a stop of the engine on the basis of a crank angular position during the stop of the engine to calculate finally the mass air quantity within the intake manifold during the stop of the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for calculating a mass air quantity sucked into one of cylinders of an internal combustion engine, comprising:
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cylinder sucked mass air quantity calculating means for calculating a mass air quantity sucked into a corresponding one of the cylinders of the engine on the basis of a mass air quantity within an intake manifold and a volume of the corresponding cylinder while performing income and outgo calculations between a mass air quantity flowing into the intake manifold and that flowing out from the intake manifold to calculate the mass air quantity within the intake manifold; and
correction means for correcting the mass air quantity within the intake manifold calculated as a result of the income and outgo calculations of the mass air quantity during a stop of the engine on the basis of a crank angular position at a time at which the engine has stopped to calculate finally the mass air quantity within the intake manifold during the stop of the engine.
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19. A method for calculating amass air quantity sucked into one of cylinders of an internal combustion engine, comprising:
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performing income and outgo calculations between a mass air quantity flowing into an intake manifold and that flowing out from the intake manifold to calculate the mass air quantity within the intake manifold;
calculating a mass air quantity sucked into a corresponding cylinder of the engine on the basis of the mass air quantity within the intake manifold and a volume of the corresponding cylinder; and
correcting the mass air quantity within the intake manifold calculated as a result of the income and outgo calculations of the mass air quantity during a stop of the engine on the basis of a crank angular position at a time at which the engine has stopped to calculate finally the mass air quantity within the intake manifold during the stop of the engine.
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Specification