Control device and control method for hybrid vehicle
First Claim
1. A control device for a hybrid vehicle which is propelled by either an internal combustion engine or an electric motor or both, and in which electrical power is transferred between the motor and a battery, comprising:
- a vehicle speed detection device which detects the speed of the vehicle;
a drive/brake power command value setting device which sets a drive/brake power command value for the vehicle;
an efficiency indication setting device which sets an efficiency indication which indicates the efficiency of utilization of fuel; and
an operational point determination device which determines an operational point for the engine and the motor which makes the amount of charge into the battery smaller, the greater is the efficiency indication, based upon the vehicle speed which is detected by said vehicle speed detection device, the drive/brake power command value which is set by said drive/brake power command value setting device, and the efficiency indication which is set by said efficiency indication setting device.
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Accused Products
Abstract
Along with detecting speed of a hybrid vehicle, a drive/brake power command value for the vehicle is set, and an efficiency indication which indicates the efficiency of fuel utilization is also set. An operational point for an internal combustion engine and an electric motor of the vehicle is determined which makes the amount of charge into a battery smaller, the greater is this efficiency indication, based upon the detected vehicle speed, and the drive/brake power command value and the efficiency indication. In this manner, it is possible to control the engine and the motor so as to bring the remaining amount of charge in the battery to a target value while keeping the fuel consumption over the route to be travelled as low as possible.
129 Citations
20 Claims
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1. A control device for a hybrid vehicle which is propelled by either an internal combustion engine or an electric motor or both, and in which electrical power is transferred between the motor and a battery, comprising:
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a vehicle speed detection device which detects the speed of the vehicle;
a drive/brake power command value setting device which sets a drive/brake power command value for the vehicle;
an efficiency indication setting device which sets an efficiency indication which indicates the efficiency of utilization of fuel; and
an operational point determination device which determines an operational point for the engine and the motor which makes the amount of charge into the battery smaller, the greater is the efficiency indication, based upon the vehicle speed which is detected by said vehicle speed detection device, the drive/brake power command value which is set by said drive/brake power command value setting device, and the efficiency indication which is set by said efficiency indication setting device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A control device for a hybrid vehicle which is propelled by either an internal combustion engine or an electric motor or both, and in which electrical power is between the motor and a battery, comprising:
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a vehicle speed detection means for detecting the speed of the vehicle;
a drive/brake power command value setting means for setting a drive/brake power command value for the vehicle;
an efficiency indication setting means for setting an efficiency indication which indicates the efficiency of utilization of fuel; and
an operational point determination means for determining an operational point for the engine and the motor which makes the amount of charge into the battery smaller, the greater is the efficiency indication, based upon the vehicle speed which is detected by said vehicle speed detection means, the drive/brake power command value which is set by said drive/brake power command value setting means, and the efficiency indication which is set by said efficiency indication setting means.
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20. A control method for a hybrid vehicle for a hybrid vehicle which is propelled by either an internal combustion engine or an electric motor or both, and in which electrical power is transferred between the motor and a battery comprising;
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detecting the speed of the vehicle;
setting a drive/brake power command value for the vehicle;
setting an efficiency indication which indicates the efficiency of utilization of fuel; and
determining an operational point for the engine and the motor, which makes the amount of charge into the battery smaller, the greater is the efficiency indication, based upon the vehicle speed which is detected, and the drive/brake power command value and the efficiency indication which are set.
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Specification