Abstract: A wheel slip control system used for a vehicle comprising: a pressure source selector being informed of a first pressure of a first pressure source and a second pressure of a second pressure source and adapted to select one of the first and second pressure source, a slip controller receiving a first adjustment signal for anti-skid control to adjust the first pressure provided by the pressure source selector or receiving a second adjustment signal for traction control to adjust the second pressure provided by the pressure source, selector a brake slip detector detecting the state of slipping of wheels during a braking operation of the vehicle and producing a brake slip signal, an acceleration slip detector detecting the state of slipping of wheels during an accelerating operation of the vehicle, a second throttle valve being placed at an intake air path provided with a first throttle valve interlocked to an acceleration increase member; and an electronic controller receiving the brake slip signal and providing

Abstract: A wheel slip control system used for a vehicle includes a pressure source selector which selects one of the first pressure source providing a first pressure and a second pressure source providing a second pressure depending on the difference of the two pressures, a slip controller which adjusts the first pressure in response to a first adjustment signal or adjusts the second pressures in response to a second adjustment signal and thereafter operates to suppress slipping of the wheels including the driven wheels, a brake slip detector which produces a brake slip signal upon detection of a slip during braking operation, an acceleration slip detector which produces an acceleration slip signal upon detection of a slip during accelerating operation, and an electronic controller which provides the first adjustment signal to the slip controller based on the brake slip signal for the purpose of vehicle anti-skid control and provides the second adjustment signal to the slip controller based on the acceleration slip si

Abstract: A wheel slip controlling system according to the present invention comprises braking actuator operable by a driver of a car for braking rotation of wheels at least including driving wheels, slip detector for detecting a slipping condition of the wheels to output a slip signal indicative of the slipping condition, anti skid controller for receiving the slip signal and for controlling, in response to the slip signal received, the pressure to be imparted from the braking actuator with a self-contained pressure source to control braking slips of said wheels at least including the driving wheels and traction controller responsive to the slip signal during acceleration of the car for controlling the driving wheels with the self-contained pressure source for control acceleration slips at least of the driving wheels.

Abstract: A traction control device in an engine which has an intake passage. A throttle valve and a flow control valve are arranged in series in the intake passage. Where acceleration of the motor vehicle is carried out, when the speed of rotation of the driven wheel or acceleration of the speed of rotation of the driven wheel exceeds a predetermined level, the flow control valve is closed. When the speed of rotation of the driven wheel becomes lower than a predetermined level or deceleration of the speed of rotation of the driven wheel becomes larger than a predetermined level, the flow control valve is opened.

Abstract: A system for automatically controlling driving speed includes a fixed speed driving device for keeping the driving speed at a predetermined speed and a control device for maintaining an optimum interval between the vehicle and the vehicle driving ahead. A hold circuit for holding the optimum driving speed, based on the distance from the vehicle driving ahead, is actuated by a circuit for detecting curves in the road, whereby the hold circuit maintains the driving speed of the vehicle as it rounds a curve at the optimum driving speed determined for the vehicle before it entered the curve.

Abstract: An anti creep braking system for a vehicle. A force transmission member is drivingly coupled to a part of the brake pedal and transmits braking force to a braking force generation system. A braked member is selectively braked by a braking device, and is driven by the brake pedal with a one direction force transmission device being interposed on the path of transmission of force between the brake pedal and the braked member. The sense of force transmission of the one direction force transmission device is such that, when the movement of the braked member with respect to the vehicle is prevented by the braking device, the brake pedal may be further depressed to increase vehicle braking action without transmitting substantial force to the braked member, but may not be moved backwards to reduce vehicle braking action.

Abstract: In an emergency brake system for a vehicle having a brake booster to increase braking pressure applied to wheel brake cylinders from a master cylinder, a cut-off valve is provided within an exhaust pipe of an internal combustion engine for the vehicle and operatively connected to a manual shift lever, and a selector valve is disposed within a communication passage connecting a servo-chamber of the brake booster to an upstream of the cut-off valve in such a manner that the servo-chamber is normally communicated to a source of pneumatic pressure in response to operation of the master cylinder. The cut-off valve is normally opened when the shift lever is in a first position and is closed upon shifting the lever to a second position from the first position to create back pressure acting on the engine. The selector valve is switched-over upon shifting the lever to the second position to apply the back pressure from the exhaust pipe into the servo-chamber through the communication passage.

Abstract: A brake booster for a vehicle comprises first and second control pistons operated by hydraulic pressure from a master cylinder, and a power piston pneumatically actuated in response to movement of the control pistons to increase braking pressure applied to the wheel brake cylinders of the vehicle. To control the increasing ratio of the braking pressure in accordance with the changes of the vehicle weight, under unloaded condition of the vehicle only the first control piston is operated by the master cylinder pressure to actuate the power piston and under loaded condition of the vehicle the second control piston co-operates with the first control piston by the master cylinder pressure to accelerate the actuation of the power piston.

Abstract: An antiskid control device for vehicles, comprising a timer circuit for producing a timing signal in synchronism with the extinction of a release signal for a skid control, apparatus for rapidly increasing the braking pressure applied to the wheel in response to said timing signal coming from the timer circuit, and correcting apparatus for increasing the braking pressure increasing rate when a large amount of friction is present between the wheel and the road surface, said antiskid control device being able to hold the fluctuation of the braking pressure within a narrow range to prevent unnecessary vibrations of the vehicle at the time of braking due to the fact that the braking pressure increasing rate is changed when the braking pressure is reapplied to the wheel, and being able to control the braking operation at all times in a manner best suited to the various road surface conditions encountered so that a skid of the vehicle is prevented from occurring and the braking distance is reduced greatly, due to t

Abstract: An anti-skid control system for vehicles wherein, in view of the fact that while it is desirable for a vehicle anti-skid control system to detect the speed of the vehicle body and the speed of the wheel to positively prevent the skidding of the vehicle, it is very difficult to detect the speed of the vehicle body, a plurality of control patterns for decreasing the wheel speed to prevent the locking of the wheels under an excessively large braking pressure are predetermined, whereby the selection among the control patterns is effected according to the conditions of the road surface detected by a vehicle body deceleration sensor and a reference wheel speed according to the selected control pattern is compared with the actual wheel speed to forcibly reduce the braking pressure when there is a tendency for the wheels to lock, thereby preventing the locking of the vehicle and hence the skidding of the vehicle without detecting the speed of the vehicle body.