Honda Motor Co., Ltd.

Dai Saitoh

Yoshikazu Murakami

Shinya Kobayashi

Kenichiro Ueda

Kazunori Watanabe

Kenichiro Kimura

Kazuo Kotaka

Chihiro Wake

Yuji Matsumoto

Junji Uehara

Kuniaki Ojima

Masanobu Asakawa

Daishi Igarashi

Hisayoshi Takahashi

Yasuo Miyoshi

A vehicle deceleration controller includes: a brake pedal; an accelerator pedal which is operated when an acceleration/deceleration request of a vehicle is inputted; a target acceleration/deceleration setting part configured to set a target deceleration based on a deceleration operation of the accelerator pedal; and an acceleration/deceleration control part configured to, when the accelerator pedal is operated to decelerate the vehicle, provide deceleration control over the vehicle such that an actual deceleration follows the target deceleration set by the target acceleration/deceleration setting part. In a case where the brake pedal and the accelerator pedal are operated simultaneously, the acceleration/deceleration control part is configured to, when a required deceleration level based on a deceleration operation of the brake pedal is present nearer an acceleration side, compared to a previously-set reference deceleration, then provide deceleration control over the vehicle, such that the actual deceleration follows the reference deceleration.

Vehicle deceleration controller

Provided is a method of controlling an electric vehicle capable of preferably performing a regenerative control when a plurality of forward driving ranges are shifted to each other. During travelling on a downhill road, an electric vehicle executes a downhill regenerative control for adjusting the regenerative amount of an electric motor so that acceleration obtained when an accelerator is closed becomes a downhill acceleration according to a road surface slope. The downhill acceleration obtained when a second forward driving range is selected, in which the deceleration of the electric vehicle becomes larger than that in a first forward driving range, is smaller over the entire range of the set road surface slope than the downhill acceleration obtained when the first forward driving range is selected.

Method of controlling electric vehicle

Provided is a method of controlling an electric vehicle capable of preferably performing a regenerative control when a plurality of forward driving ranges are shifted to each other. During travelling on a downhill road, the vehicle executes a downhill regenerative control for adjusting the regenerative amount of an electric motor so that acceleration obtained when an accelerator is closed becomes a downhill acceleration according to a road surface slope. The vehicle also executes an acceleration increase control in which the downhill acceleration obtained when the forward driving ranges are shifted from a second forward driving range to a first forward driving range during travelling on the downhill road is at least temporarily set to an acceleration exceeding the downhill acceleration obtained on the assumption that the vehicle continuously travels on the same road surface slope as that of the currently travelling downhill road in the first forward driving range.

This electromotive-vehicular motor control apparatus includes: a motor; a power drive unit; a torque control unit that controls an output torque of the motor; an electric current control unit; a number-of-revolutions detection unit; a target number-of-revolutions setting unit; a number-of-revolutions deviation calculation unit; and a removal unit that outputs a signal of a second number-of-revolutions deviation, in which the torque control unit controls the output torque based on the second number-of-revolutions deviation that has been output from the removal unit.

Electromotive-vehicular motor control apparatus

A fuel cell vehicle is provided that can suppress uneven torque. The fuel cell vehicleincludes a motor; a fuel cell; a battery; a battery drive unitfor driving the motorusing electricity from the batteryso as to serve as an battery drive mode, in which case the initialization of the fuel cellto generate electricity is not complete; a fuel cell drive unitfor driving the motorusing electricity from the fuel celland batteryso as to serve as a fuel cell drive mode, in which case the initialization of the fuel cellto generate electricity is complete; and a torque upper limit control unitfor controlling a torque upper limit value of the motorunder the battery drive mode and fuel cell drive mode.

Fuel cell vehicle

An electric vehicle includes a device which determines, on the basis of the gradient of a road surface, a target acceleration of the vehicle in the case where the operational states of an accelerator (gas) pedal and a brake pedal of the vehicle are an OFF state when the vehicle is traveling on a down-slope road, a device which determines the correction amount of a regenerative torque for bringing the actual acceleration of the vehicle close to the target acceleration, a device which determines a basic target torque of an electric motor, which becomes a regenerative torque when the operational state of the accelerator (gas) pedal is the OFF state, on the basis of the operational state of the accelerator (gas) pedal, and a device which determines a target torque by correcting the basic target torque on the basis of at least the aforesaid correction amount. The output torque of the electric motor is controlled to the determined target torque. Thus, when the electric vehicle travels on the down-slope road, the regenerative operation of the electric motor is accomplished such that an acceleration suited to the gradient of the road surface can be generated in the vehicle while minimizing the influences of disturbance factors.

Electric vehicle and regeneration control method for electric vehicle

The object of the present invention is provide a drive control system of an electric vehicle that can prevent overshoot of the amount of slip. The drive control system of the electric vehicle includes: a motor to drive a driving wheel; a PDU; a number-of-revolution sensor that detects the number of revolutions of the motor; a grip number of revolutions calculating device for calculating the current grip number of revolutions of the motor; a motor power limiting value calculating portion and a conversion portion that determines the limiting torque value of the motor; and a driving torque determining portion that determines the driving torque of the motor.

Drive control system of an electric vehicle

A fuel cell system is provided which includes a fuel cell to which fuel gas and oxidizing gas are supplied to generate electricity, a purge valve which purges fuel gas discharged from the fuel cell, a dilutor which mixes the purged fuel gas with the oxidizing gas and purges the purged fuel gas mixed with the oxidizing gas into the atmosphere, and an ECU which stops supply of the oxidizing gas to the fuel cell so as to cause an idle stop and determines whether to permit the idle stop depending on a concentration of the fuel gas in the dilutor.

Fuel cell system and method for permitting idle stop in fuel cell system

A fuel cell system and an idle stop controlling method for the fuel cell system. The fuel cell system includes: a fuel gas supply means for supplying fuel gas; an oxidant gas supply means for supplying oxidant gas; a fuel cell to which the fuel gas and the oxidant gas are supplied for generation of electricity; an idle stop means for stopping generation of electricity by the fuel cell to perform idle stop; and an unstable state detection means for detecting whether the generation of electricity by the fuel cell is unstable. If the unstable state detection means detects that generation of electricity by the fuel cell is unstable, idle stop by the idle stop means is prohibited so that the fuel cell continues to generate electricity.

Fuel cell system and method of controlling idle stop of the fuel cell system

A fuel cell system has a fuel cell, a gas supply device and an electronic control unit. The gas supply device supplies a scavenging gas to the fuel cell. The electronic control unit controls scavenging of the fuel cell with the scavenging gas when a request for discontinuing power generation is given to the fuel cell. A humidification control device for controlling humidification of the scavenging gas and a cooling control device for controlling cooling of the scavenging gas are provided in a passage connecting the gas supply device and the fuel cell.

Growing community of inventors

Saitama, Japan

Dai Saitoh