Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Hironori Abe

Ryo Shimizu

Naoki Miyamoto

Makoto Kamachi

Norihiko Ikoma

Kota Nasu

Kazunori Handa

Daizo Ogino

Hitoshi Takeuchi

A vehicle () has mounted therein an engine (), a first rotating electric machine (), and a second rotating electric machine (). The power of the engine () and the power of the first rotating electric machine () are separately transmitted from different power transmission paths () to drive wheels (). The power of the engine () is also transmitted to the second rotating electric machine () and utilized to generate electrical power. The vehicle () is provided with a connecting/disconnecting mechanism () on the power transmission path () that transmits the power of the first rotating electric machine () to the drive wheels (). A controller () of the vehicle () calculates a requested driving power of the vehicle (), and when the connecting/disconnecting mechanism () is shifted from a disengaged state to an engaged state to deal with an increase in the requested driving power while the engine () is running, makes the second rotating electric machine () power run and transmits power of the second rotating electric machine () to the drive wheels ().

Controller for vehicle

A vehicle includes connecting/disconnecting mechanisms () disposed on power transmission paths between first rotating electric machines () mounted on the vehicle and an output shaft () that drives a wheel, a first rotating electric machine speed sensor () that detects a rotation speed of the first rotating electric machine () as a first rotation speed (Nm,Ng), and a wheel speed sensor () that detects a rotation speed of the wheel as a wheel speed (Nw). A control unit () includes: a first calculator (B) that calculates an axle rotation speed (Nam,Nag) representing a rotation speed of the output shaft () based on the first rotation speed (Nm,Ng) in a state where the first connecting/disconnecting mechanism () is engaged; a monitoring unit (C) that calculates a deviation (X,Y) between the axle rotation speed (Nam,Nag) calculated by the first calculator (B) and the wheel speed (Nw); and a second calculator (D) that calculates the axle rotation speed (Nax,Nay) by calibrating the wheel speed (Nw) based on the calculated deviation (X,Y) in a state where the first connecting/disconnecting mechanism () is disengaged.

Vehicle control unit

In a vehicle () comprising a first rotating electric machine () that serves as a driving source for running the vehicle () and that exchanges electric power with a battery (), and an engine () that serves as the driving source, a first connecting/disconnecting mechanism () is disposed on a first power transmission path from the first rotating electric machine () to a driving wheel, and a second connecting/disconnecting mechanism () is disposed on a second power transmission path from the engine () to the driving wheel. A first running mode in which the vehicle () is driven by power of the engine () in a state where the second connecting/disconnecting mechanism () is engaged, and another running mode in which the first connecting/disconnecting mechanism () is engaged and the second connecting/disconnecting mechanism () is disengaged are set for the vehicle (). A control unit () includes: a connecting/disconnecting mechanism controller (D) that disengages the first connecting/disconnecting mechanism () when a predetermined condition is satisfied during the first running mode; and a rotating electric machine controller (E) that variably controls a standby rotation speed (Nw) of the first rotating electric machine () when the first connecting/disconnecting mechanism () is disengaged.

In a hybrid vehicle including a front motor for driving front wheels, a rear motor for driving rear wheels, a generator for generating power by being driven by an internal combustion engine, and a step-up converter for stepping up the voltage from a battery and supplying power to the front motor, while stepping-down the generated power of the generator and supplying the power to the rear motor, a hybrid control unit decreases the power supplied from the generator to the rear motor, and increases the power supplied from the battery to the rear motor when input power of the step-up converter is limited based on a temperature condition of the step-up converter.

Travel driving apparatus of vehicle

A controller of a hybrid vehicle includes: a control unit configured to activate a starter device for starting any one of a drive motor and an engine by stepping up electric power from a battery by a voltage transformer. The control unit includes a limitation part that limits passing power of the voltage transformer when the temperature of the voltage transformer rises, and a calculation part that obtains a maximum electric power that can be supplied to the drive motor when the starter device is activated, by subtracting a consumed power of the starter device from limited power during limitation of passing power by the limitation part. The control unit activates the starter device and starts the engine, when required power of the drive motor reaches the maximum electric power calculated by the calculation part during limitation of passing power by the limitation part.

Controller of hybrid vehicle

A power controller of a hybrid vehicle includes: a first drive motor that drives any one of a front wheel and a rear wheel of a vehicle; an engine that drives the one wheel or the corresponding other one of the front wheel and the rear wheel of the vehicle through a clutch; a generator that is driven by the engine; and a voltage transformer that steps down generated electric power supplied to the first drive motor and a battery from the generator. The power controller limits passing power of the voltage transformer according to the temperature of the voltage transformer, and connects the clutch when the passing power of the voltage transformer is limited.

Power controller of hybrid vehicle

In a hybrid vehicle including a front motor for driving front wheels, and a step-up converter for stepping up voltage from a battery to supply power to the front motor, in which power regenerated by rotational force of the front wheel during vehicle deceleration is stepped down by a step-up converter and can be supplied to a battery, the hybrid vehicle includes a hybrid control unit which computes maximum input power of the step-up converter and regenerated power of the front motor during vehicle deceleration, and sets a difference obtained by subtracting regenerated power of the front motor from the maximum input power of the step-up converter to the maximum generated power of the generator.

In a hybrid vehicle including: a step-up converter for stepping-up the voltage from a battery and supplying power to the front motor for driving front wheels; as well as a paddle switch for setting regenerative braking torque stepwisely, and a hybrid control unit for calculating a regenerative braking force based on a selection stage set by the paddle switch, the hybrid control unit decreases the regenerative braking force to be less than the regenerative braking force while the maximum input/output power of the step-up converter is not limited, when a selection stage in which regenerative braking force is more than that in a D range is selected while the maximum input/output power of the step-up converter is limited.

A hybrid vehicle including a front motor for driving front wheels, a rear motor for driving rear wheels, and a step-up converter for stepping-up the voltage from a battery and supplying power to the front motor, in which an engine is started to shift the vehicle from an EV mode into a series mode when the output power of the step-up converter is lower than the required power of the front motor, the hybrid vehicle includes a hybrid control unit which computes maximum output power of the step-up converter and, when the output power of the step-up converter is more than the maximum output power, increases the distribution ratio of the travel driving torque of the rear wheel, thereby increasing the output torque of the rear motor.

Growing community of inventors

Tokyo, Japan

Hironori Abe