| Patent application number | Description | Published |
|---|
| 20080208426 | BRAKE CONTROL APPARATUS AND BRAKE CONTROL METHOD - A brake control apparatus has wheel cylinders, hydraulic pressure supply sources pressurizing an inside of the wheel cylinder, control valves performing a pressure-raising/reducing control of the inside of the wheel cylinder, and at least two actuator units grouped according to a diagonal wheel cylinder system or a fore-and-aft wheel cylinder system, one of which has a main control section and the other of which has a sub control section. Both the control sections control the plurality of hydraulic pressure supply sources and the control valves based on a vehicle status amount input to both the control sections via communication lines. When the actuator unit in which the main control section is included becomes abnormal, the sub control section drives the hydraulic pressure supply source and the control valves belonging to the actuator unit of the sub control section and controls the internal pressures of the wheel cylinders. | 08-28-2008 |
| 20080230337 | BRAKE CONTROL APPARATUS FOR VEHICLES - A brake control apparatus including a reservoir tank, a housing, a pump within the housing, a suction port formed in the housing and communicated with a suction portion of the pump, a discharge port formed in the housing and communicating a discharge portion of the pump with wheel cylinders, a suction pipe connecting the suction port and the reservoir tank, and a reservoir chamber disposed within the housing between the suction portion of the pump and the suction port. The reservoir chamber has a volume capable of reserving at least a predetermined amount of the brake fluid which is required for one-time braking at a maximum fluid pressure. | 09-25-2008 |
| 20080232015 | CIRCUIT ABNORMALITY DETERMINING APPARATUS AND METHOD - In circuit abnormality determining apparatus and method applicable to a brake control apparatus, an abnormality determining section determines at least one of an abnormality location of the electric circuit and an abnormality kind of the electric circuit on a basis of monitoring results of a current state in the electric circuit detected by a current detection section, a voltage state of the electric circuit detected by a open circuit detection section, and a power supply voltage. | 09-25-2008 |
| 20090039702 | BRAKE CONTROL APPARATUS - A brake control apparatus for a vehicle includes: a master cylinder for raising a wheel cylinder pressure according to operation of a brake pedal; a booster for raising the wheel cylinder pressure by operating the master cylinder independently of operation of the brake pedal; a pressure regulator provided with a hydraulic pump for raising the wheel cylinder pressure independently of operation of the master cylinder; and a control section including: a first controller for controlling the booster; and a second controller for controlling the pressure regulator. The control section detects that at least one of the booster and the first controller is in a state of malfunction; selects one of backup modes according to the state of malfunction, wherein the backup modes restrict operation of at least one of the booster and the pressure regulator in different manners; and controls the wheel cylinder pressure in the selected backup mode. | 02-12-2009 |
| 20090045672 | BRAKE CONTROL APPARATUS AND METHOD - A brake control system includes a master cylinder to produce a master cylinder pressure, a brake booster to assist the master cylinder, a first control unit to control the booster, a hydraulic modulator to supply a wheel cylinder pressure to a wheel cylinder, and a second control unit to control the hydraulic modulator. The hydraulic modulator includes a pressure source, such as a pump, to increase the wheel cylinder pressure. The first and second control units are connected together by a communication line. The brake control system may further include a boost condition transmitting section to transmit, through the communicating line, a condition of a boost system formed by the brake booster and the first control unit. | 02-19-2009 |
| 20090179627 | ON-VEHICLE ELECTRIC POWER SOURCE SYSTEM - In an on-vehicle electric power source system, a power source control device is configured to supply an electric power from an electric power supply source to an actuator by means of a dual-circuit power supply line. The dual-circuit power supply line includes a bypass line and a charge-up line arranged in parallel with the bypass line. A first shut-off circuit is disposed in the bypass line. A booster circuit, an electricity storage device, and a second shut-off circuit are disposed in the charge-up line. The storage device is provided for storing an electric power boosted up by the booster circuit. Also provided is a control unit, which is configured to perform switching between an electric power supply through the bypass line and an electric power supply through the charge-up line by a changeover of a shutoff-circuit established/blocked state between the first and second shut-off circuits. | 07-16-2009 |
