Abstract: A steering control system for controlling turning of steered road wheels of a motor vehicle in accordance with steering of a steering wheel, comprises a steering angle sensor that detects a steering angle by which the steering wheel is turned; an actuator that turns the steered road wheels when operated; a vehicle operation condition sensor that detects an operation condition of the motor vehicle; a target value determining section that determines a steered angle target value of the steered road wheels in accordance with the steering angle detected by the steering angle sensor and the vehicle operation condition detected by the vehicle operation condition sensor; and an actuator drive circuit that drives the actuator in accordance with the steered angle target value.

Abstract: First and second fluid pressure chambers are formed in both sides of a movement direction of a cam ring swingably placed within a pump body. A spool of a control valve is moved due to a pressure difference between the front and back of a metering orifice. Fluid pressures of the fluid pressure chambers are controlled. The cam ring is swung. Further, a solenoid for giving thrust in an axial direction thereof to the spool of the control valve and electronic control device for controlling driving of the solenoid are provided. The electronic control device has a steering sensor and determines a steering direction based on a signal from the steering sensor and also calculates a steering speed to the steering direction and controls a driving current of the solenoid in response to this steering speed and changes a discharge flow rate of a pump.

Abstract: First and second fluid pressure chambers are formed in both sides of a movement direction of a cam ring swingably placed within a pump body. A spool of a control valve is moved due to a pressure difference between the front and back of a metering orifice. Fluid pressures of the fluid pressure chambers are controlled. The cam ring is swung. Further, a solenoid for giving thrust in an axial direction thereof to the spool of the control valve and electronic control device for controlling driving of the solenoid are provided. The electronic control device has a steering sensor and determines a steering direction based on a signal from the steering sensor and also calculates a steering speed to the steering direction and controls a driving current of the solenoid in response to this steering speed and changes a discharge flow rate of a pump.

Abstract: An energization control apparatus for a glow plug includes a battery, a glow plug, a power control unit, and an energization controller. The glow plug has a low rated voltage which allows rapid heating at a low battery voltage during cranking of a diesel engine in a severe wintertime condition. The power control unit is arranged between the battery and the glow plug to control a power supplied to the glow plug. The energization controller controls the power control unit so as to equalize a root-mean-square value of a voltage applied to the glow plug to be the low rated voltage when a voltage applied to the glow plug at the start of the diesel engine is detected to be higher than the low battery voltage.

Abstract: An energization control apparatus for a glow plug connected between ground and the emitter of an npn transistor and turning on/off the npn transistor to control an amount of power to be supplied to the glow plug includes a control signal generator (20) for generating a control signal for turning on/off the npn transistor. The control apparatus also includes a base voltage booster, arranged between the control signal generating means the a base of the npn transistor, for boosting a base voltage such that the npn transistor is operated in a saturation region regardless of load variations.