Nissin Kogyo Co., Ltd.

Honda Motor Co., Ltd.

Toshiyuki Handa

James W Post, Ii

A drive force-limiting device for limiting a drive force that acts on a drive wheel of a vehicle includes an acceleration correction unit for correcting a first acceleration of the vehicle and obtaining a corrected second acceleration, a first calculation unit for calculating a first speed of the vehicle on the basis of a wheel speed of the drive wheel and the first acceleration, a second calculation unit for calculating a second speed of the vehicle on the basis of the wheel speed and the second acceleration, a request unit for requesting a limiting drive force for limiting the drive force in a case that a difference between the first speed and the second speed is equal to or greater than a first threshold value, and an estimation unit in which the second speed is used as an estimated speed of the vehicle. The request unit requests the limiting drive force, whereby, when the wheel speed is less than a second threshold value, the estimation unit resets the second speed using the first speed and obtains the estimated speed.

Control device for controlling drive force that operates on vehicle

A control device for controlling a front wheel drive force and a rear wheel drive force of a vehicle includes a first controller for controlling a drive force of main drive wheels and the drive force of auxiliary drive wheels wherein the drive force of the main drive wheel is one of a front-wheel drive force and a rear-wheel drive force, and the drive force of the auxiliary drive wheel is another of the front-wheel drive force and the rear-wheel drive force, and a second controller for sending to the first controller an auxiliary-drive-wheels-limiting drive force for limiting the drive force of the auxiliary drive wheels in a case that the vehicle is traveling in an unstable state. The second controller has a calculation unit for calculating the auxiliary-drive-wheel-limiting drive force on the basis of a vehicle instability parameter. The first controller increases the drive force of the main drive wheel by causing the drive force of the auxiliary drive wheel to match the auxiliary-drive-wheel-limiting drive force.

A control device for controlling a drive force that operates on a vehicle includes a first controller for controlling the drive force, and a second controller for sending to the first controller a limit of the drive force. The second controller has an input unit for inputting the drive force outputted from the first control means, and a calculation unit for computing in a first mode a limiting drive force for limiting the drive force. In a case that a first difference between the drive force and the limiting drive force is equal to or greater than a threshold value, the calculation unit calculates the limiting drive force in a second mode instead of the first mode so that the first difference is limited from becoming greater.

A control device for controlling a drive force that acts on a vehicle includes a first controller for controlling the drive force, and a second controller for sending to the first control means a limit of the drive force. The second controller has an input unit for inputting the drive force outputted from the first controller, and a calculation unit for calculating a limiting drive force for limiting the drive force. In the case that a first value obtained by subtracting the drive force from the limiting drive force is equal to or greater than a threshold value, the calculation unit outputs a second value that is greater than the limiting drive force.

Control device for controlling drive force that acts on vehicle

A control device for controlling a front wheel drive force and a rear wheel drive force of a vehicle comprises a first controller for controlling a drive force of a main drive wheel and a drive force of an auxiliary drive wheel, the drive force of the main drive wheel being one of the front-wheel drive force and the rear-wheel drive force, and the drive force of the auxiliary drive wheel being another of the front-wheel drive force and the rear-wheel drive force; a second controller for sending to the first controller an auxiliary-drive-wheels-limiting drive force for limiting the drive force of the auxiliary drive wheels in a case that the vehicle is traveling in an unstable state; and a third controller for controlling a motor drive force, which is a source of the drive force of the main drive wheel and the drive force of the auxiliary drive wheel. The third controller reduces the motor drive force on the basis of the auxiliary-drive-wheel-limiting drive force.

A control device for controlling a front wheel drive force and a rear wheel drive force of a vehicle includes a first controller for controlling a drive force of main drive wheels and a drive force of auxiliary drive wheels, wherein the drive force of the main drive wheel is one of the front-wheel drive force and the rear-wheel drive force, and the drive force of the auxiliary drive wheel is another of the front-wheel drive force and the rear-wheel drive force, and a second controller for sending to the first controller an auxiliary-drive-wheels-limiting drive force for limiting the drive force of the auxiliary drive wheels. The second controller has a preparatory unit for preparing reference drive force, a first limiting unit for limiting a reduction in the auxiliary-drive-wheels-limiting drive force, and a second limiting unit for limiting an increase in the auxiliary-drive-wheels-limiting drive force.

A control device for controlling a front wheel drive force and a rear wheel drive force of a vehicle comprises a first controller for controlling a drive force of main drive wheels and the drive force of auxiliary drive wheels; and a second controller for sending to the first controller an auxiliary-drive-wheels-limiting drive force for limiting the drive force of the auxiliary drive wheels in a case that the vehicle is traveling in an unstable state. The second controller has a first calculation unit for calculating a first limiting drive force on the basis of lateral acceleration of the vehicle, and a second calculation unit for calculating a second limiting drive force on the basis of longitudinal acceleration of the vehicle. The second controller sends to the first controller a maximum limiting drive force among the first limiting drive force and the second limiting drive force as the auxiliary-drive-wheel-limiting drive force.

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East Liberty, OH, United States of America

Toshiyuki Handa