초록 ▼

A preceding vehicle, an inter-vehicle distance between a self vehicle and the preceding vehicle, vehicle speeds of the self vehicle and the preceding vehicle, an operation of a cruise control, a braking operation, a brake pressure and the like are detected and inputted to a cruise control unit. Base

A preceding vehicle, an inter-vehicle distance between a self vehicle and the preceding vehicle, vehicle speeds of the self vehicle and the preceding vehicle, an operation of a cruise control, a braking operation, a brake pressure and the like are detected and inputted to a cruise control unit. Based on these input signals, the cruise control system selects a constant speed running mode when the inter-vehicle distance is larger than a specified value and selects a following-behind running mode when the inter-vehicle distance is smaller than the specified value. When the constant speed mode is selected, the vehicle travels at a constant preset vehicle speed by operating a throttle actuator and a brake actuator. Further, when the following-behind running mode is selected, the vehicle travels keeping the inter-vehicle distance at a specified distance by the operation of the throttle actuator and the brake actuator. If the following-behind running mode lasts longer than a specified time, the preset vehicle speed is updated into a vehicle speed higher than an average vehicle speed within the specified time. Further, when a braking operation is detected during the following-behind running mode, if the brake pressure is lower than a specified value and the vehicle speed is higher than a predetermined lower limit vehicle speed, the cruise control is restored when the braking operation finishes.

대표청구항 ▼

[ What is claimed is:] [1.] A cruise control system of a vehicle having a first vehicle speed detecting means for detecting a first vehicle speed of said vehicle, an inter-vehicle distance detecting means for detecting an inter-vehicle distance between said vehicle and a preceding vehicle traveling

[ What is claimed is:] [1.] A cruise control system of a vehicle having a first vehicle speed detecting means for detecting a first vehicle speed of said vehicle, an inter-vehicle distance detecting means for detecting an inter-vehicle distance between said vehicle and a preceding vehicle traveling ahead of said vehicle, a second vehicle speed detecting means for detecting a second vehicle speed of said preceding vehicle and an acceleration/deceleration means for accelerating or decelerating said vehicle, comprising:a safe inter-vehicle distance calculating means for calculating a safe inter-vehicle distance based on said first vehicle speed and said second vehicle speed;a constant speed running mode selecting means for selecting a constant speed running mode wherein said first vehicle speed of said vehicle is held at a set vehicle speed by said acceleration/deceleration means, when said inter-vehicle distance is larger than said safe inter-vehicle distance;a following-behind running mode selecting means for selecting a following-behind running mode wherein said inter-vehicle distance is held at a predetermined value by said acceleration/deceleration means, when said inter-vehicle distance is smaller than said safe inter-vehicle distance; anda vehicle speed updating means, when said following-behind running mode lasts longer than a specified time, for updating said set vehicle speed into a vehicle speed around an average vehicle speed within said specified time.