Nissan Motor Company Limited

Yoji Seto

Yoshinori Yamamura

Masahide Nakamura

Yosuke Kobayashi

Minoru Tamura

Takuya Inoue

Satoshi Tange

Hideaki Inoue

Kouichi Akabori

Seiki Takahashi

Masahiro Kobayashi

Yasuhiko Takae

Nariaki Etori

Tsuneyuki Watanabe

Yoshitaka Uemura

Youji Hamaguchi

Hidekazu Nakajima

Koki Minegishi

A travel control device comprises a detection unit configured to detect a travel state of a subject vehicle, a determination unit configured to determine a travel scene of the subject vehicle, a storage unit configured to store presentation information to be presented to a user in each travel scene, a presentation unit configured to present the presentation information corresponding to the travel scene to the user, an input unit for the user to input response information, and a control unit configured to control travel of the subject vehicle on the basis of the response information. The storage unit stores a priority level when presenting the presentation information. The presentation unit presents the presentation information of which the priority level is highest to the user when an actual travel scene of the subject vehicle falls under travel scenes corresponding to two or more items of the presentation information.

Travel control device

A vehicle acceleration suppression device includes an obstacle relative distance detector configured to detect a relative distance between a vehicle and an obstacle, a drive force manipulation amount detector configured to detect a drive force manipulation amount that is a manipulation amount of an accelerator pedal, a steering manipulation amount detector configured to detect a steering manipulation amount that is the manipulation amount of the steering manipulation element, and a drive force limit unit configured to limit the drive force of the vehicle to a predefined drive force limit value, depending on the steering manipulation amount detected by the steering manipulation amount detector, when the relative distance detected by the obstacle relative distance detector is equal to or shorter than a predefined limiting relative distance and the drive force manipulation amount detected by the drive force manipulation amount detector exceeds a predefined drive force manipulation amount threshold.

Vehicle acceleration suppression device and vehicle acceleration suppression method

There is disclosed a vehicle control processing when a vehicle backs up. According to this vehicle control processing, a controller backs the vehicle toward an obstacle step by step by repeating execution of back control processing for backing the vehicle to a halt at a target stop position, which is set on the obstacle side of the vehicle, until a distance from the vehicle to the obstacle becomes equal to or less than a final target stop position. Thus, it prevents the vehicle driver from failing to park the vehicle at an appropriate position and feeling a lot of trouble during vehicle control as experienced by the vehicle driver in the conventional vehicle control apparatus.

Vehicle control apparatus for avoiding contact with obstacle locating backward

A cruise control device and method for controlling a vehicle such that the driver can set the speed setting at will, and the speed of the vehicle is controlled to match the speed setting. The speed limit for the road on which the vehicle is traveling is detected, and when the detected speed limit changes from a first speed limit to a second speed limit, the speed setting is selectively changed to the second speed limit. When the driver has performed an operation to change the speed setting before the detected speed limit changes from the first speed limit to the second speed limit, changing of the speed setting to the second speed limit is selectively suppressed.

Cruise control device and method for controlling the running of a vehicle

A cruise control for a vehicle that detects an inter-vehicle distance to a preceding vehicle. A first vehicle speed instruction value is computed based on the inter-vehicle distance. Curve information of a curve in the road ahead of the vehicle is detected, and a second vehicle speed instruction value is computed for traveling on the curve based on the curve information. A final target vehicle speed is set based on the vehicle speed instruction values. When the vehicle travels through the curve while the first vehicle speed instruction value is larger than the second vehicle speed instruction value, the final target vehicle speed is set to a vehicle speed higher than the second vehicle speed instruction value and lower than the first vehicle speed instruction value. The speed of the vehicle is controlled based on the final target vehicle speed.

Cruise control

In vehicular traveling control apparatus and method, comprising: a vehicular forward substance detecting section of a laser radar type is provided to detect a forward substance located in a forward direction of the vehicle, a vehicular travel control is performed on the basis of a relative positional relationship between the forward substance detected by the vehicular forward substance detecting section and the vehicle, such an impulse that a detection range of the vehicular forward substance detecting section is varied has been applied to the vehicular forward detecting section is detected, and the vehicular traveling control is inhibited when detecting that the impulse has been applied to the vehicular forward substance detecting section.

Vehicular traveling control apparatus and method

A vehicle travel controlling apparatus and method in which a target vehicle speed for when a vehicle travels along a curve is calculated based on a radius of the curve, and the vehicle speed is controlled based on the calculated target vehicle speed. When an accelerator operation performed by a driver is detected, the controller corrects the target vehicle speed based on a vehicle position where the acceleration operation is performed.

Vehicle travel controlling apparatus and method

When it is judged that a possible collision of the own vehicle with a preceding vehicle is avoidable by operation of either one of the brake pedal and steering wheel, a first grade braking force is automatically produced. While, when it is judged that the possible collision is unavoidable by operation of either of the brake pedal and steering wheel, a second grade braking force is automatically produced, which is greater than the first grade braking force.

Automatic brake system of motor vehicle

An automatic brake system for a vehicle is disclosed. Based on a possibility that a potential collision with an obstacle preceding the vehicle can avoided by braking, and a possibility that the potential collision can be avoided by steering, the system automatically controls a braking operation for collision-avoidance. A condition of starting the automatic braking operation and a characteristics of the operation are determined based on calculation or estimation of a condition of the path where the vehicle is traveling, such as a relative speed, widths of spaces on sides of the obstacle, and steering characteristics.

Automatic brake system for a vehicle

A braking control device performs a steering and/or avoidance possibility determination based on the state of the vehicle to execute automatic vehicle braking when an obstacle in front of the vehicle cannot be avoided by steering and/or braking. The device determines that the obstacle can be avoided by steering when the correlation value between steering avoidance time and relative velocity is smaller than the distance from the vehicle to the obstacle. The steering avoidance time is set to a shorter value when the suspension characteristic is stiffer and the sideways force generated by the front wheels is larger. The steering avoidance time is set successively shorter for low, high, and medium speed travel regions, respectively, to reflect the behavior response characteristic of the vehicle with respect to steering input. The vehicle deceleration that would occur if the driver released the accelerator pedal is considered in the braking avoidance possibility determination.

Braking control device

In adaptive cruise control method for an automotive vehicle, an inter-vehicle distance between the vehicle and a preceding vehicle which is traveling ahead of the vehicle is detected, a velocity of at least one of the vehicle and the preceding vehicle is detected, a traveling state of the vehicle is controlled on the basis of the detected inter-vehicle distance and a target inter-vehicle distance, a delay is provided for one of the detected velocities of the vehicle and the preceding vehicle which is used to set the target inter-vehicle distance at a time of a detection of one of the velocities of the vehicle and the preceding vehicle which is used to set the target inter-vehicle distance, and the target inter-vehicle distance is set on the basis of the detected velocity of one of the vehicle and the preceding vehicle for which the delay is provided.

Adaptive cruise control system and method for automotive vehicle with inter-vehicle distance control function

An adaptive cruise control system for a host vehicle includes a radar device for detecting a distance between the host vehicle and a preceding vehicle, a vehicle speed sensor for detecting a vehicle speed of the host vehicle and a controller for executing a host vehicle speed control based on the distance and the host vehicle speed. The controller cancels the host vehicle speed control when the radar device loses sight of the preceding vehicle.

Adaptive cruise control system for vehicle

An adaptive cruise control (ATCC) system for a host-vehicle controls one of a driving force and a brake hydraulic pressure according to a command vehicle speed calculated on the basis of an inter-vehicle distance and a host-vehicle speed. The ATCC system gradually decreases a deceleration of the host-vehicle according to an approach of the host-vehicle speed toward a control-cancel vehicle speed when the host-vehicle speed becomes lower than or equal to a gradual-deceleration starting vehicle speed during a period of decreasing the host-vehicle speed toward the control-cancel vehicle speed, so that the deceleration takes a value near zero when the host-vehicle speed reaches the control-cancel vehicle speed.

A target orbit of an inter-vehicle distance is calculated based on an inter-vehicle distance command value, a target orbit coincident-host vehicle running speed command value for according the inter-vehicle distance with the target orbit is calculated, and a reference host vehicle running speed command value is calculated by use of the target orbit and the target orbit coincident-host vehicle running speed command value. Moreover, a preceding vehicle acceleration is detected, and a value obtained by multiplying the preceding vehicle acceleration by a response time constant of a host vehicle running speed control system is added to the reference host vehicle running speed command value, thus a host vehicle running speed command value is calculated and set, whereby an influence of the preceding vehicle acceleration is removed, and a follow-up characteristic to an inter-vehicle distance target value is improved. When ride comfort is lowered due to an influence of a noise, a gain multiplied with the preceding vehicle acceleration is made variable in a range from the response time constant to zero, whereby a feedback effect of the preceding vehicle acceleration is controlled.

Vehicular running control apparatus

In vehicle velocity control apparatus and method for an automotive vehicle, a first following control is allowed to be executed when a vehicle velocity of the vehicle (host vehicle) Vcar is equal to or higher than a first set vehicle velocity V and a second following control is allowed to be executed when the vehicle velocity of the host vehicle Vcar is equal to or lower than a second set vehicle velocity V which is lower than first set vehicle velocity V . Hence, a vehicle driver can accurately determine which of the first and second following controls is being executed by confirming the vehicle velocity of the host vehicle Vcar at which the corresponding one of the controls is started to be executed through a speedometer of the vehicle.

Growing community of inventors

Kanagawa, Japan

Yoji Seto