Patent Document ID: 9975537
Application ID: 15014250
Patent Flag: 1

Claim One:
1. A running control device for a vehicle comprising a running controller mounted on a vehicle, wherein in the running controller, at least a deceleration region and an acceleration region are set in a range of operation amount of a single operation element, wherein when the operation amount of the operation element is in the deceleration region, the running controller applies braking to the vehicle by a requested braking force according to the operation amount of the operation element, using: (i) friction braking generated by friction due to contact with wheels of the vehicle, and (ii) at least one of (a) engine braking generated by an internal-combustion engine or a transmission of the vehicle and (b) regenerative braking generated by an electric motor of the vehicle, and the running controller, when determining that a behavior of the vehicle during running is in a stable state, increases a distribution of the engine braking or the regenerative braking in entire requested braking force and decreases a distribution of the friction braking, and the running controller, when determining that the behavior of the vehicle during running is in an unstable state or becomes an unstable state in near future with high probability, decreases the distribution of the engine braking or the regenerative braking in the entire requested braking force and increases the distribution of the friction braking to at least a driven wheel of the wheels, wherein the running controller obtains a behavior state amount of the vehicle from a behavior state amount detection device, the running control device, when determining that the behavior of the vehicle becomes an unstable state in near future with high probability, decreases the distribution of the engine braking or the regenerative braking according to the behavior state amount and increases the distribution of the friction braking according to the behavior state amount, and the running controller, when determining that the behavior of the vehicle is in an unstable state, sets the distribution of the engine braking or the regenerative braking to zero and generates all the requested braking force by the friction braking, wherein the running controller includes an operation speed acquisition unit that acquires an operation speed of the operation element, and increases a rate of shifting the distribution of braking force of the engine braking or the regenerative braking to the distribution of braking force of the friction braking, as the operation speed of the operation element increases.