Engine control apparatus, control method and control system
First Claim
1. An engine control apparatus adapted to be mounted on a vehicle including:
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
a second buttery, supplying power to the electrical load of the vehicle when the engine is in an economical operation;
a voltage regulator regulating voltages of the first buttery and the second buttery; and
a current limiter, incorporated in the voltage regulator and limiting a current value flowing from the voltage regulator to the second battery to a limiting value, the engine control apparatus comprising;
an engine stopping unit, stopping the engine when a first predetermined condition is established;
an engine starting unit, starting the engine when a second predetermined condition is established;
a current detecting unit, detecting the current value when the second battery is charged; and
a changing unit, changing the limiting value between a first limiting value and a second limiting value which is higher than the first limiting value according to the detected current value in a case where the voltage of the second battery is no more than a second predetermined value and the voltage of the first battery is no less than a first predetermined value.
1 Assignment
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Accused Products
Abstract
A first buttery supplies power to an electrical load of a vehicle when an engine is in a normal operation. A second buttery supplies power to the electrical load of the vehicle when the engine is in an economical operation. A voltage regulator regulates voltages of the first buttery and the second buttery. A current limiter limits a current value flowing from the voltage regulator to the second battery to a limiting value. An engine stopping unit stops the engine when a first predetermined condition is established. An activator starts the engine when a second predetermined condition is established. A current detecting unit detects the current value when a second battery is charged. A changing unit changes a limiting value between a first limiting value and a second limiting value which is higher than the first limiting value according to the detected current value in a case where the voltage of the second battery is no more than a second predetermined value and the voltage of the first battery is no less than a first predetermined value.
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Citations
22 Claims
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1. An engine control apparatus adapted to be mounted on a vehicle including:
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
a second buttery, supplying power to the electrical load of the vehicle when the engine is in an economical operation;
a voltage regulator regulating voltages of the first buttery and the second buttery; and
a current limiter, incorporated in the voltage regulator and limiting a current value flowing from the voltage regulator to the second battery to a limiting value, the engine control apparatus comprising;
an engine stopping unit, stopping the engine when a first predetermined condition is established;
an engine starting unit, starting the engine when a second predetermined condition is established;
a current detecting unit, detecting the current value when the second battery is charged; and
a changing unit, changing the limiting value between a first limiting value and a second limiting value which is higher than the first limiting value according to the detected current value in a case where the voltage of the second battery is no more than a second predetermined value and the voltage of the first battery is no less than a first predetermined value. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
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2. An engine control apparatus adapted to be mounted on a vehicle including:
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
a second buttery, supplying power to the electrical load of the vehicle when the engine is in an economical operation; and
a voltage regulator, regulating voltages of the first buttery and the second buttery;
the engine control apparatus comprising;
a voltage detecting unit, detecting the voltages of the first buttery and the second buttery; and
switching unit, switching a target voltage value of the second buttery from a first voltage value to a second voltage value which is higher than the first voltage value when the second battery is charged in a case where the voltage of the second battery is no more than a second predetermined value and the voltage of the first battery is no less than a first predetermined value.
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
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20. An engine control method for an vehicle adapted to include;
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
a second buttery, supplying power to the electrical load of the vehicle when the engine is in an economical operation;
a voltage regulator regulating voltages of the first buttery and the second buttery; and
a current limiter, incorporated in the voltage regulator and limiting a current value flowing from the voltage regulator to the second battery to a limiting value, the engine control method comprising;
stopping the engine when a first predetermined condition is established;
starting the engine when a second predetermined condition is established;
detecting the current value when the second battery is charged; and
changing the limiting value between a first limiting value and a second limiting value which is higher than the first limiting value according to the detected current value.
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
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21. An engine control system adapted to be mounted on a vehicle including:
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
a second buttery, supplying power to the electrical load of the vehicle when the engine is in an economical operation;
a voltage regulator regulating voltages of the first buttery and the second buttery; and
a current limiter, incorporated in the voltage regulator and limiting a current value flowing from the voltage regulator to the second battery to a limiting value, the engine control apparatus comprising;
an engine stopping unit, stopping the engine when a first predetermined condition is established;
an activator, starting the engine when a second predetermined condition is established;
a current detecting unit, detecting the current value when the second battery is charged; and
a changing unit, changing the limiting value between a first limiting value and a second limiting value which is higher than the first limiting value according to the detected current value.
- a first buttery, supplying power to an electrical load of the vehicle when an engine is in a normal operation;
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22. An engine control apparatus automatically activating and deactivating an engine, and adapted to be mounted on a vehicle including:
- a first buttery, which is used when the engine is in a normal operation;
a second buttery, which is used when the engine is automatically deactivated; and
a voltage regulator, performing a charge control of the second buttery and limiting a current value flowing from the voltage regulator to the second battery to a limiting value, the engine control apparatus comprising;
a controller, operable to increase a target charge voltage value more than usual, and changing the limiting value between a first limiting value and a second limiting value which is higher than the first limiting value according to the current value in a case where a voltage of the first buttery and a voltage of the second buttery have a predetermined relation when the second buttery is charged.
- a first buttery, which is used when the engine is in a normal operation;
Specification