Patent Number: 6,311,120

Title: Automatic speed control device for vehicle

Abstract: An automatic speed control device for a vehicle includes a distance measuring sensor 3, a vehicle speed sensor 5 and a control unit 9 for controlling the vehicle speed. In the control unit 9, a target speed determining section 11 determines a target speed corresponding to a distance detected by the distance measuring sensor 3 and the vehicle speed detected by the vehicle speed sensor 5. A speed storing section 13 of the control unit 9 stores the detected vehicle speed as a set speed. A selecting section 15 of the control unit 9 selects a smaller speed of the target speed and the set speed. A speed control section 17 of the control unit 9 controls the vehicle speed so as to be the smaller speed selected by the selecting section 15. When losing the preceding vehicle, the speed control section 17 further controls the vehicle speed so as to maintain a present vehicle speed until the driver's vehicle reaches a lost point where the preceding vehicle was lost.

Inventors: Asada; Tetsuya (Kanagawa-ken, JP)

Assignee: Nissan Motor Co., Ltd.

International Classification: B60K 31/00 (20060101); B60T 007/12 (); B60K 031/00 ()

Expiration Date: 10/30/2018