Nissan Motor Company Limited

Takayuki Kagaya

Masato Koga

Yuuki Nakajima

Katsunori Tanaka

Tetsuya Iwasaki

Yoshitaka Miura

A clutch control method is used in a vehicle that has a dog clutch and an engagement sensor, which detects an engagement of a dog clutch. The clutch control method includes executing an engagement of the dog clutch when a magnitude of a differential rotation of the dog clutch is less than or equal to a prescribed value when the engagement sensor is normal and then determining the engagement of the dog clutch using the engagement sensor. The clutch control method further includes setting the differential rotation of the dog clutch to a value larger than the prescribed value when the engagement sensor has failed and then determining the engagement of the dog clutch based on a difference between the differential rotation of the dog clutch at a time of starting the engagement of the dog clutch and the differential rotation of the dog clutch.

Vehicle clutch control method and vehicle clutch control device

A method for controlling a hybrid vehicle is used for controlling a hybrid vehicle including: an engine connected to a generator and configured to be connected to a driving wheel; and a motor configured to be connected to the driving wheel, the motor being driven by electric power supplied from a battery connected to the generator. The control method including: in a direct drive mode in which the engine is connected to the driving wheel, when the battery is charged and required charging electric power per unit time exceeds a threshold value, switching, by releasing a connection state between the engine and the driving wheel and connecting the motor to the driving wheel, to a series mode in which the engine drives the generator.

Method for controlling hybrid vehicle and hybrid vehicle

A drive system of an electric vehicle includes: an internal combustion engine; a generating motor provided so as to be able to generate electricity by receiving motive force from the internal combustion engine; and a travel motor provided so as to be able to be driven by electric power generated by the generating motor, and the drive system is configured so as to be able to switch a series hybrid mode and an engine direct connected mode, the series hybrid mode being a mode in which, while the internal combustion engine and the drive wheel are linked via a first clutch so as to be unlinkable/linkable, the travel motor and the drive wheel are linked via a second clutch different from the first clutch so as to be unlinkable/linkable, and the travel motor is used as a drive power source such that the electric vehicle travels by transmitting motive force from the travel motor to the drive wheel, the engine direct connected mode being a mode in which at least one of the internal combustion engine and the generator is used as a drive power source such that the electric vehicle travels by transmitting motive force from the drive power source to the drive wheel. At a mode switching time from the engine direct connected mode to the series hybrid mode involving deceleration, when the rotation synchronization or the engagement of the second clutch on an engagement side is not completed before the vehicle speed is decelerated to a predetermined vehicle speed, the first clutch on a disengagement side is disengaged before the engagement of the second clutch is completed.

Technical field of method of controlling electric vehicle and drive system of electric vehicle

A power transmission device of the present invention is a power transmission device for a vehicle, including: a generator configured to be driven by power of an internal combustion engine; a travel motor configured to be driven by electric power generated by the generator and to drive a drive wheels; and the drive wheels configured to be driven by the power of the internal combustion engine or power of the travel motor. The power transmission device includes: a first power transmission path configured to transmit power between the travel motor and the drive wheels; and a first clutch mechanism configured to allow or interrupt power transmission through the first power transmission path.

Power transmission device for vehicle

The method includes, based on a torque variation of a drive shaft after an engagement timing of an engine clutchand before a release timing of a motor clutchwhen switching a power transmission path from a first power transmission pathto a second power transmission path, increasing a slope of a torque increase of a power generation motorin an absolute value with respect to a slope of a torque decrease of a traveling motorin at least a part of a period from a timing Tto a timing T, and increasing a slope of a torque decrease of the power generation motorin the absolute value with respect to a slope of a torque increase of the traveling motorin at least a part of a period from the timing Tto a timing T

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Kanagawa, Japan

Takayuki Kagaya