Abstract: An exhaust gas purification system abnormality diagnosing device includes: a sensor value detecting means that reads a sensor signal of a specified gas concentration sensor to detect a gas concentration; a limiting device controlling means which, when the gas concentration has become equal to or greater than a predetermined start-of-diagnosis threshold value or when a difference obtained by subtracting from the gas concentration an estimated NOx concentration on a downstream side of a selective reduction catalyst obtained by computation has become equal to or greater than a predetermined start-of-diagnosis threshold value, increases the quantity of ammonia capable of being adsorbed by the selective reduction catalyst by raising the pressure inside an exhaust gas passageway with a passageway area limiting device disposed on the downstream side of the selective reduction catalyst; and a determining means that determines the abnormal state on the basis of the gas concentration or the difference after the pressur

Abstract: There is provided a vehicle brake device that includes hydraulic brake means for generating a hydraulic brake force and regenerative brake means for generating a regenerative brake force and distributes the hydraulic brake force and the regenerative brake force for a driver-requested brake force. The hydraulic brake means includes a pressure reducing valve that reduces hydraulic pressure of wheel cylinders. The vehicle brake device includes hydraulic brake control means for maintaining the pressure reducing valve open while the driver-requested brake force is covered by only the regenerative brake force. The hydraulic brake control means does not open the pressure reducing valve when hydraulic pressure is present in the wheel cylinders.

Abstract: A brake control device for a brake system. The control device can perform both an interlocking brake control and an antilock brake control. The brake system includes a front-wheel hydraulic circuit, a front-wheel-side braking part; a rear-wheel hydraulic circuit, a rear-wheel-side braking part; and an electrically-operated pump which pressurizes the brake fluid. The brake control device includes a usual voltage mode where the interlocking brake control or the anti-lock brake control is performed when the supply voltage is a first voltage or more, and a low voltage mode where at least one of the interlocking brake control and the anti-lock brake control is performed in a limited manner when the supplied voltage is a second, lower voltage. An operation mode is changed from the usual voltage mode to the low voltage mode when it is determined that the supply voltage becomes lower than the first voltage.

Abstract: In a reservoir tank (5) of the present invention, a hydraulic fluid movement deterring wall (26) is disposed integrally with an upper half body (9) and extending toward a radial direction center of a cylindrical upper half body neck section (24) on a curved portion at a boundary between an inner peripheral surface (24a) of the cylindrical upper half body neck section (24) and an inner surface (25a1) of a ceiling portion (25a) of an upper half body trunk section (25) or on the inner peripheral surface (24a) of the upper half body neck section (24). The movement of the hydraulic fluid frontward (toward a hydraulic fluid inlet (10)) in a hydraulic fluid storage chamber 13 at a time when the reservoir tank (5) is tilted frontward is controlled by this hydraulic fluid movement deterring wall (26).

Abstract: A brake control method. During ABS control, a control sequence, other than the conventional control sequence, based on the slip ratio and so forth resulting from the measurement value of a wheel speed sensor, and a minimum amount of pressure increase or a minimum amount of pressure decrease is ensured. In another embodiment, a control sequence independent from a control sequence based on the measurement value of a wheel speed sensor, sets allowable ranges relating to amounts of change in the pressure of a wheel cylinder, monitors the actual pressure value with a pressure sensor at the time of brake control, and, at a time when the pressure inside the wheel cylinder has deviated from these allowable ranges, drives an actuator such as an electromagnetic valve and controls in such a way that the pressure inside the wheel cylinder falls within an allowable range.

Abstract: A brake device for a vehicle, that includes at least a first hydraulic brake and a second hydraulic brake which produce hydraulic brake forces, and a regenerative brake which produces a regenerative brake force, and that performs a distribution of the hydraulic brake force and the regenerative brake force with respect to a driver request brake force.

Abstract: A heater control device of an oxygen concentration sensor is provided in which even in a case where an internal combustion engine is automatically stopped by idle stop control after cold start-up, it is possible to start energization of a heater at an appropriate time.

Abstract: [Problem] To provide a reducing agent supply apparatus that can quickly melt urea aqueous solution solidified in a reducing agent injection valve to allow early start of the injection control of urea aqueous solution, a method for controlling the reducing agent supply apparatus, and an exhaust gas purification apparatus.

Abstract: It is an object of the present invention to control unstable behavior of a vehicle body that arises when braking during turning.

Abstract: A brake control method for a hydraulic brake device equipped with an actuator that automatically regulates braking liquid pressure in a wheel cylinder of a vehicle without driver intervention. The method includes: (a) calculating a time period in which holding or decreasing brake hydraulic pressure is continuously performed to the wheel cylinder; and (b) controlling the actuator such that, an increasing pressure and decreasing pressure to the wheel cylinder after the calculated time period has reached a predetermined time, the amount of the pressure increase and the amount of the pressure decrease are the same.

Abstract: It is possible to determine the presence or absence of the degradation and abnormality of a glow plug with high reliability using a relatively simply procedure.

Abstract: A controller and method of a reducing agent injector capable of accurately providing a required amount of ammonia to a reduction catalyst. A controller for controlling energization of an electromagnetic solenoid, including: a target injection amount calculator for calculating a target injection amount of the reducing agent; a first current output signal calculator for calculating the duration of providing a first current output signal to be provided to the electromagnetic solenoid at the start of injection and calculating the DUTY ratio of the first current output signal; a second current output signal calculator for calculating the DUTY ratio of providing a second current output signal after the first current is provided; a temperature calculator for estimating a temperature within the reducing agent injector; and an output signal corrector for correcting at least one of the first current output signal and the second current output signal based on the temperature estimated.

Abstract: A hybrid vehicle includes an internal-combustion engine, an engine starter ISG motor, a main motor that drives rear wheels, a CVT pulley belt disposed between an engine output shaft and a front wheel shaft, a clutch connected between the output shaft of the internal-combustion engine and an input shaft of the CVT, a battery, and a hybrid controller. When the hybrid controller determines that there is a need to add a traction force of the engine from a state where the vehicle is driven by the main motor alone, the hybrid controller controls the respective components so as to start the engine by the ISG motor in a state where the clutch is disengaged, control a speed ratio of the CVT so that a CVT input speed achieves a target speed for starting clutch engagement, detects the engine rotation speed, detects the CVT input speed, and engages the clutch when a difference between those speeds falls within a predetermined range.

Abstract: A vehicle braking force control device which, at a normal time, performs antilock brake control when the slip ratio of a wheel has become equal to or greater than a predetermined threshold. The control device acquires from the engine control unit an accelerator pedal position signal corresponding to an accelerator pedal position, a clutch connection signal corresponding to a state of connection of a clutch, and a power transmission signal corresponding to a state of power transmission of a transmission. When engine braking is large on the basis of the accelerator pedal position signal, the clutch connection signal, and the power transmission signal, the vehicle braking force control device changes the predetermined threshold value to an offset threshold value that makes it harder to perform the antilock brake control than at the normal time.

Abstract: A reducing agent supply apparatus that can reduce the state of large deviation of the pressure within a reducing agent supply passage from a target pressure and an exhaust gas purification apparatus including such a reducing agent supply apparatus are provided.

Abstract: A rationality diagnosis method and a rationality diagnosis apparatus for a sensor inside a tank are provided. The rationality diagnosis method and the rationality diagnosis apparatus can accurately and easily perform a diagnosis to determine whether rationality of all sensors is maintained. The rationality diagnosis method for the sensor inside the tank performs a rationality diagnosis of a concentration sensor, a liquid level sensor and a temperature sensor that are provided inside the tank that stores liquid. The rationality diagnosis method is characterized by diagnosing whether the rationality is lost in one of the concentration sensor, the liquid level sensor and the temperature sensor by determining whether there exists any contradiction between respective sensor values of the concentration sensor, the liquid level sensor and the temperature sensor.

Abstract: A brake fluid pressure control device 10 includes: a block-shaped housing 30, front and rear wheel-use flow paths, mounting holes in each side surface of the housing 30; a pair of front wheel-use switching valve bodies 1a and 2a that are mounted in a pair of mounting holes 31a and 31b that control the pressure of a brake fluid supplied to a front wheel-use wheel cylinder 103; a pair of rear wheel-use switching valve bodies 3a and 4a that are mounted in a pair of mounting holes 31c and 31d that control the pressure of the brake fluid supplied to a rear wheel-use wheel cylinder 106; a pressure sensor 13 that is inserted inside a mounting hole 31j in the first side surface 30a of the housing 30; and an electronic control unit 8 that drives and controls the front wheel-use and rear wheel-use switching valve bodies 1a to 4a.

Abstract: A common-rail-type fuel injection control device where an error in the correction of a fuel injection amount when an exhaust brake is used is eliminated enabling a more reliable correction of a fuel injection amount. A minute injection is performed plural times in a non-injection state. A difference between a reference energizing time, which becomes the reference for a fuel injection valve, and an actual energizing time based on a frequency component corresponding to a variation in an engine speed which is generated in the minute injection is learned. A correction control corrects an energizing time and timing. The correction control is corrected corresponding to a presence or non-presence of an operation of an exhaust brake and a magnitude of a supercharging pressure, and an amount of variation in an engine speed calculated based on a rotational variation frequency component.

Abstract: A pressure sensor diagnosis method and a common-rail-type fuel injection control device to diagnose the presence or the non-presence of an abnormality of a pressure sensor without having a dedicated circuit. A time between energizing of injectors and the occurrence of a peak counter electromotive current is measured as a valve closing time. A rail pressure with respect to the measured valve closing time is obtained as an estimated rail pressure based on a correlation between a valve closing time and the rail pressure. When an absolute value of the difference between the estimated rail pressure and an actual rail pressure is equal to or less than a predetermined error, it is determined that the pressure sensor has no abnormality. Otherwise, it is determined that the pressure sensor has an abnormality.

Abstract: An airbag ECU includes a voltage detection section that detects a voltage in a power supply supplied to other control units (for example, front passenger seat occupancy sensing ECU). In addition, the airbag ECU includes a timer that measures an elapsed time after the voltage detected by the voltage detection section falls in a preset voltage range and a recording section that records the elapsed time measured by the timer on a memory when a failure of the other control units is detected.