Vehicle engine output control method and vehicle engine
First Claim
1. A vehicle engine output control method comprising:
- calculating a target torque of an engine in accordance with an operational condition of a vehicle;
calculating a target intake air amount per engine revolution cycle necessary to output said target engine torque;
calculating an opening of a sub throttle valve disposed in an intake path of the engine from an opening of a main throttle valve disposed in the intake path of which said opening of said main throttle valve is controlled in accordance with an operation amount of an accelerator pedal and said target intake air amount;
on/off controlling said sub throttle valve in accordance with said calculated sub throttle valve opening; and
correcting said target engine torque in accordance with a response delay of a torque converter signal, a transmission friction signal, an external load signal of the engine, an atmospheric condition signal, and said operational condition of the vehicle, and, calculating said target intake air amount in accordance with said corrected target engine torque.
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Accused Products
Abstract
A method and apparatus for calculating a target torque of an engine in accordance with operation condition of a vehicle, calculating a target intake air amount per engine revolution cycle required to generate the target engine torque, calculating an opening of a sub throttle valve disposed in an intake path of the engine from an opening of a main throttle valve disposed in the intake path, of which an opening is controlled in accordance with an operation amount of an accelerator pedal, and the target intake air amount, or calculating an equivalent throttle opening assuming the main throttle valve and the sub throttle valve as an equivalent throttle valve in accordance with the target intake air amount, calculating the sub throttle valve opening by correcting the equivalent throttle opening with a correction coefficient determined by the relationship between the equivalent throttle opening and the main throttle valve opening, and on/off controlling the sub throttle valve in accordance with the calculated sub throttle valve opening.
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Citations
8 Claims
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1. A vehicle engine output control method comprising:
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calculating a target torque of an engine in accordance with an operational condition of a vehicle; calculating a target intake air amount per engine revolution cycle necessary to output said target engine torque; calculating an opening of a sub throttle valve disposed in an intake path of the engine from an opening of a main throttle valve disposed in the intake path of which said opening of said main throttle valve is controlled in accordance with an operation amount of an accelerator pedal and said target intake air amount; on/off controlling said sub throttle valve in accordance with said calculated sub throttle valve opening; and correcting said target engine torque in accordance with a response delay of a torque converter signal, a transmission friction signal, an external load signal of the engine, an atmospheric condition signal, and said operational condition of the vehicle, and, calculating said target intake air amount in accordance with said corrected target engine torque. - View Dependent Claims (2)
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3. A vehicle engine output control method comprising:
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calculating a target torque of an engine in accordance with an operational condition of a vehicle; calculating a target intake air amount per engine revolution cycle necessary to output said target engine torque; calculating an equivalent throttle opening based on said target intake air amount assuming a main throttle valve disposed in an intake path of the engine of which said opening of said main throttle valve is controlled in accordance with an operation amount of an accelerator pedal and an independently on/off controllable sub throttle valve as an equivalent throttle valve; correcting said equivalent throttle opening with a correction coefficient determined by a relationship between said equivalent throttle opening and said main throttle valve opening to calculate an opening of said sub throttle valve; on/off controlling said sub throttle valve in accordance with said calculated sub throttle valve opening; and correcting said target engine torque in accordance with a response delay of a torque converter signal, a transmission friction signal, an external load signal of the engine, an atmospheric condition signal, and said operation condition of the vehicle, and, calculating said target intake air amount in accordance with said corrected target engine torque. - View Dependent Claims (4)
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5. A vehicle engine output control apparatus comprising:
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a main throttle valve disposed in an intake path of an engine for a vehicle, of which an opening is controlled in accordance with an operation amount of an accelerator pedal; a sub throttle valve disposed in the intake path, operation condition detecting means for detecting operation condition of the vehicle; target engine torque calculating means for calculating an engine torque to be outputted from the engine in accordance with the detection result of said operation condition detecting means; target intake air amount calculating means for calculating a target intake air amount per engine revolution cycle required to generate said target engine torque; sub throttle valve opening calculating means for calculating an opening of the sub throttle valve from said target intake air amount and an opening of said main throttle valve; and
,sub throttle valve on/off control means for on/of controlling said sub throttle valve in accordance with said calculated sub throttle valve opening; and wherein said target engine torque calculating means comprises a correction section for correcting said target engine torque in accordance with a response delay of a torque converter, a transmission friction, an external load of the engine, an atmospheric condition, and an operation condition. - View Dependent Claims (6)
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7. A vehicle engine output control apparatus comprising:
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a main throttle valve disposed in an intake path of an engine for a vehicle, of which an opening is controlled in accordance with an operation amount of an accelerator pedal; a sub throttle valve disposed in the intake path, operation condition detecting means for detecting operation condition of the vehicle; target engine torque calculating means for calculating an engine torque to be outputted from the engine in accordance with the detection result of said operation condition detecting means; target intake air amount calculating means for calculating a target intake air amount per engine revolution cycle required to generate said target engine torque; equivalent throttle valve opening calculating means for calculating an equivalent throttle opening from said target intake air amount per engine revolution cycle assuming said main and sub throttle valves as an equivalent throttle valve; correction coefficient storing means for storing a correction coefficient determined by the relationship between said equivalent throttle opening and said main throttle valve opening; sub throttle valve opening calculating means for calculating a sub throttle valve opening by correcting said equivalent throttle opening with said correction coefficient; and sub throttle valve on/off control means for on/off controlling said sub throttle valve in accordance with said calculated sub throttle valve opening; wherein said target engine torque calculating means comprises a correction section for correcting said target engine torque in accordance with a response delay of a torque converter, a transmission friction, an external load of the engine, an atmospheric condition and an operation condition. - View Dependent Claims (8)
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Specification