摘要:
A vehicular communication device includes a plurality of request switches, a request signal generator means, a transmitter, a receiver and a display. The request switches respectively designate a plurality of services which a user may request. The request signal generating means checks the operational conditions of all request switches in order to enable the user to operate at least two of the request switches substantially simultaneously. The request signal generator then generates a request signal on the basis of the checking. The transmitter transmits the request signal to a remote service facility. The receiver receives an acknowledgment signal received signal transmitted from the service facility. The display displays a message in accordance with the acknowledgment signal for assuring the user that the request signal has been received by the service facility.
摘要:
In a braking apparatus for use in a motor vehicle which supplies hydraulic pressure from a master cylinder to wheel braking cylinders for front-side and rear-side wheels, a braking force adjusting device is provided in common between the master cylinder and the front-side and rear-side wheel braking cylinders to adjust the hydraulic pressure to be applied to the front-side and rear-side wheel cylinders. A proportioning valve controls the hydraulic pressure to the rear-side wheel braking cylinder to become lower than the hydraulic pressure from the braking force adjusting device by a predetermined ratio. The proportioning valve is adapted to change the predetermined ratio in accordance with a control signal to prevent the rear-side wheel from locking. The control signal to the proportioning valve is determined on the basis of information representing an excessive degreee of braking force obtained in accordance with the states of the front-side and rear-side wheels during the braking operation.
摘要:
An automotive rear safety checking apparatus which comprises a plurality of obstacle detectors mounted on the rear part of the automobile for radiating ultrasonic wave on the watching areas smaller in width than the width of the automobile respectively and detecting the ultrasonic wave reflected from an obstacle. The ultrasonic wave is radiated from the obstacle detectors in time division. Pulse signals in the number associated with the distance between the obstacle detector and the obstacle are generated in response to the detection of the ultrasonic wave reflected from the obstacle, so that the relative positions of the automobile and the obstacle, are indicated two-dimensionally in accordance with the pulse signal.