AUTOMATIC BRAKE DEVICE
First Claim
1. An automatic brake device that actuates a brake of a travelling vehicle in a case where the travelling vehicle will potentially collide with an obstacle forward of the vehicle, the automatic brake device comprising:
- a first electric power storage connected to a power supply line;
a fluid transfer unit that is driven by receiving electric power through the power supply line and applies a braking fluid pressure to the brake;
an electric power generator that receives power from an engine of the vehicle and generates electric power at a voltage higher than a charged voltage of the first electric power storage;
a second electric power storage that stores the electric power generated by the electric power generator; and
a voltage converter that converts the charged voltage of the second electric power storage to a predetermined value and supplies the converted voltage to the power supply line, whereinin a case where the vehicle will potentially collide with a forward obstacle, an output voltage of the voltage converter is set at a target voltage higher than an output voltage in a normal state before actuation of the brake, or if the output voltage of the voltage converter cannot be set at the target voltage, the electric power generator is driven to connect a generation voltage of the electric power generator to the power supply line.
1 Assignment
0 Petitions
Accused Products
Abstract
A brake device includes: a battery connected to a power supply line; a fluid pressure unit driven by power from the supply line and applies fluid pressure to a brake; an alternator that receives power from a vehicle engine and generates power at a voltage higher than a charged voltage of the battery; a capacitor that stores the power generated by the alternator; and a DC/DC converter that converts the voltage of the capacitor to a predetermined value and supplies the converted voltage to the supply line. When the vehicle will potentially collide with a forward obstacle, an output of the DC/DC converter is set at a target higher than an output voltage in a normal state before brake actuation, or if output of the DC/DC converter cannot be set at the target voltage, the alternator is driven to connect a generation voltage of the alternator to the supply line.
18 Citations
4 Claims
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1. An automatic brake device that actuates a brake of a travelling vehicle in a case where the travelling vehicle will potentially collide with an obstacle forward of the vehicle, the automatic brake device comprising:
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a first electric power storage connected to a power supply line; a fluid transfer unit that is driven by receiving electric power through the power supply line and applies a braking fluid pressure to the brake; an electric power generator that receives power from an engine of the vehicle and generates electric power at a voltage higher than a charged voltage of the first electric power storage; a second electric power storage that stores the electric power generated by the electric power generator; and a voltage converter that converts the charged voltage of the second electric power storage to a predetermined value and supplies the converted voltage to the power supply line, wherein in a case where the vehicle will potentially collide with a forward obstacle, an output voltage of the voltage converter is set at a target voltage higher than an output voltage in a normal state before actuation of the brake, or if the output voltage of the voltage converter cannot be set at the target voltage, the electric power generator is driven to connect a generation voltage of the electric power generator to the power supply line. - View Dependent Claims (2, 3, 4)
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Specification