摘要:
A headrest control apparatus includes: a headrest moving mechanism that supports a headrest in such a manner that at least one of a rotation of the headrest about an axis of the headrest, which extends in the vehicle-height direction, and a movement of the headrest in the vehicle-width direction is permitted; a drive unit that causes at least one of the rotation and the movement of the headrest; and a control unit that controls the drive unit.
摘要:
A vehicle anti-lock braking system having X-crossed two pressure application sub-systems connected to respective independent chambers of a master cylinder, each sub-system including a normally-open first shut-off valve in a front brake cylinder passage between the master cylinder and a front wheel brake cylinder, a series connection of a normally-open second shut-off valve and a proportioning valve disposed in a portion of a rear brake cylinder passage connected to the front brake cylinder passage and a rear wheel brake cylinder, a normally-closed third shut-off valve in a reservoir passage connected to the rear brake cylinder passage and a reservoir, a pump in a pump passage which is connected at one end to the reservoir and the other end to a portion of the rear brake cylinder passage between the proportioning valve and the rear wheel brake cylinder, and a controller for controlling the three shut-off valves.
摘要:
In an automatic transmission control system provided for an internal combustion engine having an automatic transmission system equipped with a traction control system in which a throttle valve is adjusted towards a closed state from a throttle position corresponding to an operation of an accelerator pedal when wheel slippage occurs, a detection unit detects a degree of operation of the accelerator pedal. A shift point changing unit changes a shift point so that gear shifting occurs on the basis of the degree of operation of the accelerator pedal in a normal state and gear shifting occurs at an engine speed lower than a predetermined engine speed at which gear shifting normally occurs when the degree of operation of the accelerator pedal is equal to or greater than a predetermined value.
摘要:
An anti-skid braking system for a vehicle, having (a) hydraulic brakes for wheels of the vehicle, (b) actuators provided for respective brake groups each including at least one of the brakes, for controlling a braking pressure or pressures of the brake or brakes of the corresponding groups, (c) speed sensors, at least one of which is provided corresponding to each actuator, for detecting speeds of the wheels, and (d) to controller operable for: normally presuming that an actual speed of the vehicle is represented by a highest one of the detected wheel speeds; after a deceleration value of the highest speed has exceeded a preset upper limit, fixing the deceleration value of the vehicle at the preset upper limit, and presuming the actual vehicle speed based on the upper limit; and calculating a slip amount of each wheel based on a difference between the presumed vehicle speed and the detected wheel speed, to control each actuator so as to prevent the wheel from skidding. The system includes a detector generating a signal whose level is changed in at least two steps indicative of at least two values of an actual deceleration value of the vehicle. The system further includes a setting device for determining the upper limit of the deceleration value such that the upper limit is changed with the detected actual deceleration value.
摘要:
A headrest control apparatus includes: a headrest moving mechanism that supports a headrest in such a manner that at least one of a rotation of the headrest about an axis of the headrest, which extends in the vehicle-height direction, and a movement of the headrest in the vehicle-width direction is permitted; a drive unit that causes at least one of the rotation and the movement of the headrest; and a control unit that controls the drive unit.
摘要:
A braking system for braking a motor vehicle by the front and rear brakes of the vehicle's front and rear wheels, respectively, including a distribution control device for controlling a distribution of front and rear wheel braking force produced by the respective front and rear brakes, according to a selected one of a first and a second distribution pattern, each of which represents the front and rear wheel braking forces in relation to each other wherein the rear wheel braking force defined by the second distribution pattern is larger than that defined by the first distribution pattern at least when the front and rear wheel braking forces are smaller than respective predetermined values. The selection of the two distribution patterns may be dependent on vehicle load.
摘要:
A traction control apparatus provided in an automotive vehicle includes a determining part for determining a slip ratio of driving wheels of the vehicle, a drive torque control part for performing a traction control process in which a driving force of the driving wheels is controlled such that the driving force is lowered to a smaller value when the slip ratio determined by the determining part is greater than a reference value, a detecting part for detecting a stalling condition of the vehicle, and a changing part for changing the traction control process performed by the drive torque control part when a stalling condition is detected by the detecting part, so as to increase the driving force of the driving wheels.
摘要:
An anti-skid control system for use in a motor vehicle having wheels whose rotational speeds are sensed by wheel sensors. The anti-skid control system decides the condition of the road-surface, on which the motor vehicle is running, on the basis of signals from wheel sensors. A reference speed is further calculated on the basis of the sensed speeds of the wheels symmetrically provided at the rear-right and rear-left sides with respect to the advancing direction of the motor vehicle. That is a selected one of an average value of the speeds of the rear-right and rear-left wheels sensed by the wheel sensors and the maximum one of the sensed rear-right and rear-left wheel speeds is selected in accordance with the decided road-surface condition. The reference speed is calculated on the basis of the selected one. A control unit of the anti-skid control system performs slip control of the wheels in accordance with the calculated reference speed. With this arrangement, the anti-skid control system can improve the braking efficiency and controllability irrespective of turning of the motor vehicle.
摘要:
A dual-circuit hydraulic anti-lock braking system for an automotive vehicle having a first and a second group of wheels, including (a) a dual-circuit hydraulic braking device including a first and a second brake circuit which are independent of each other, (b) a wheel rotating condition detecting device; (c) a vehicle running condition detecting device; (d) a regulating device for regulating each of a first and second braking pressures transmitted by the first and second brake circuits, respectively, by decreasing or increasing the braking pressure for a duration of time, when the detected rotating condition of at least one wheel of each of the first and second wheel groups is brought into a predetermined relationship with the detected running condition of the vehicle so as to apply the regulated pressure to a brake cylinder associated with the wheel whose detected rotating condition is brought into the predetermined relationship with the detected running condition of the vehicle. The system further including (e) a failure detecting device for detecting a failure of each of the first and second brake circuits; and (f) a time setting device for determining the duration of time at a first value when no failure is detected, and at a second value different from the first time value when a failure is detected.
摘要:
A master cylinder device including: a housing whose front side is closed and which has a separation wall for separating the inside of the housing into a front side chamber and a rear side chamber; a pressurizing piston disposed in the front side chamber so as to define a pressurizing chamber for pressurizing the brake fluid and an input chamber into which a brake fluid from a high pressure source is introduced; an input piston disposed in the rear side chamber and moving forward by an operation force; and a transmission rod which is through the separation wall, whose proximal end portion is fixed in one of the pressurizing and input pistons, and whose distal end portion is apart from the other of the pressurizing and input pistons in a state of no forward movement.