Automatic braking system for motor vehicle

Details Automatic braking system for motor vehicle Automatic braking system for motor vehicle

1993-01-28

1994-07-26

Focarino, Margaret A.

Motor vehicles

With means for controlling operation responsive to...

Radiation, force, or waves reflected from external object or...

303100, 3031143, 36442601, 364461, B60T 858

Patent

active

053320565

ABSTRACT:
An automatic braking system for a motor vehicle includes a sensor for detecting a distance and a relative speed between the vehicle and an obstacle in front of the vehicle. A judging device for judging an alarm sounding region and a region in which the vehicle has a possibility of contact with the obstacle, based on the detected distance and the relative speed and an automatic brake for automatically braking respective wheels when the judging device judges the region in which the vehicle has a possibility of the contact with the obstacle are provided. The automatic brake incudes a vacuum type booster which has a first chamber to which negative pressure is introduced and a second chamber to which atmospheric pressure is introduced. The first chamber is connected to the down stream portion, from a throttle valve, in an intake path of an engine. The booster uses a pressure difference between the negative pressure and the atmospheric pressure. A device for increasing the negative pressure in the first chamber of the automatic brake prior to the operation of the automatic brake is also provided.

REFERENCES:
patent: 3856105 (1974-12-01), Lewis et al.
patent: 4491840 (1985-02-01), Nashikawa et al.
patent: 4505351 (1985-03-01), Nashikawa et al.
patent: 4778225 (1988-10-01), Rudolph et al.
patent: 4899708 (1990-02-01), Jung
patent: 4966248 (1990-10-01), Farr

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