Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Panasonic Corporation

Katsuhiko Yamaguchi

Osamu Harada

Mamoru Tomatsuri

Takahiro Nishigaki

Yukio Kobayashi

Toshio Inoue

Keiko Hasegawa

Keita Fukui

Kiyoshiro Ueoka

Koichiro Muta

Kazuhiro Ichimoto

Daigo Ando

Naoto Suzuki

Toshifumi Takaoka

Makoto Yamazaki

Toshiaki Nakanishi

Tadao Kimura

Eiji Fukushiro

Hiroshi Kanai

Masakiyo Kojima

Seiji Hino

Naoki Kurata

Takumi Anzawa

Ikuo Ando

Kenji Hayashi

Eiji Masuda

Mitsuaki Higa

Masaki Kusada

Kazuyuki Tokuda

Masaaki Yamaoka

Koji Morita

Katsuhiko Hirose

Shunsuke Fushiki

Shoichi Sasaki

Takeshi Kotani

Tsukasa Abe

Takuji Matsubara

Kunio Kanamaru

Kiwamu Inui

Yukihiro Sonoda

Yusuke Nakayama

Masayoshi Iwase

Shinichi Abe

Akihiro Yamanaka

Kenichi Nagase

Yasuyuki Shibata

Yusai Murakami

Seiji Bito

An ECU for controlling an engine counts an unused time TIM of engine in a low-temperature environment. If the unused time TIM is shorter than a predetermined reference value, the ECU sets idle speed immediately after start of operation of the engine to a first idle speed, and if the unused time TIM is longer than the reference value, sets the idle speed to a second idle speed higher than the first idle speed. If duration of the second idle speed exceeds a reference period determined by state of driving of the vehicle, the ECU sets the idle speed to be lower than the second idle speed. In this manner, increased vibration in idling operation in a low-temperature environment can be prevented.

Internal combustion engine controller for setting idle speed and vehicle mounting the same

A hybrid vehicle outputs creep torque by output torque of a second MG. A creep control unit controls creep torque when an accelerator pedal is not operated. The creep control unit controls a creep cut amount defined by a decrement of creep torque when the brake pedal is operated relative to creep torque when the brake pedal is not operated such that the creep cut amount when reverse running is selected is smaller than the creep cut amount when forward running is selected.

Control device for vehicle

An ECU for controlling an engine counts the continued period of stopping the engine in a low-temperature environment. The ECU sets the idle rotational speed at a first idle rotational speed when the stopped period is below a predetermined threshold value, and at a second idle rotational speed higher than the first idle rotational speed when the stopped period exceeds the reference value. Accordingly, resonance at the driving force transmission system during idle operation can be prevented even in the case where a mount employed for attaching the engine to the vehicle is hardened as a result of undergoing a low-temperature environment for a long period of time, and the resonant rotational speed of the driving force transmission system including the engine varies.

Control device for internal combustion engine and vehicle incorporating control device

An ECU selects, in accordance with operation by a driver, either one of a manual shift mode in which a shift range can be manually changed through the operation by the driver and an engine rotation speed is controlled in accordance with a selected shift range and an automatic shift mode in which the engine rotation speed is controlled so as to reduce an amount of fuel consumption as compared with that in the manual shift mode. The driver is recommended to make a change from the manual shift mode to the automatic shift mode when the manual shift mode is selected.

Control apparatus and control method for vehicle

A vehicle includes a braking force application device that executes braking force holding control which holds braking force irrespective of braking operation by a driver during a stop on a slope; and a control limiting device that limits execution of the braking force holding control when a shift position is set in a neutral position.

Vehicle

A hybrid vehicle has as a travel mode an EV mode for traveling while stopping the engine, and an HV mode for operating the engine. An ECU includes first and second traveling distance operating units, and a determination unit. The first traveling distance operating unit calculates an EV traveling distance indicative of a total traveling distance in the EV mode. The second traveling distance operating unit calculates the engine use traveling distance indicative of a total traveling distance when the engine is operated. The determination unit determines the necessity of maintenance of predetermined elements included in the vehicle based on the EV traveling distance and the engine use traveling distance.

Hybrid vehicle, control method of hybrid vehicle, and computer-readable recording medium recording program for allowing computer to execute control method

A drive force control portion firstly changes a front wheel command torque (Tfcm) and a rear wheel command torque (Trcm) so that each command torque reaches a torque in a predetermined range. The drive force control portion releases the restriction on the change of the rear wheel command torque (Trcm) after the front wheel command torque (Tfcm) and the rear wheel command torque (Trcm) have entered the predetermined range. Therefore, it becomes possible to improve the vehicle stability in a vehicle that includes a plurality of power sources that drives a plurality of wheels.

Control device for vehicle, and control method thereof

A vehicle includes a plurality of batteries, a vehicle load (motor generators, inverters, boost converters, connection units, and system main relays configured to be able to select at least one of the plurality of batteries as an electric power supply source, and for generating drive force by receiving electric power from the electric power supply source, and a control unit for controlling the vehicle load such that the vehicle load receives the electric power from the electric power supply source in response to a selection instruction for selecting the electric power supply source. The selection instruction is input by a user. That is, the user can select a battery to be used for traveling of the vehicle.

Electric vehicle power source selection

An engine ECU () and an HV_ECU () control a throttle motor () such that the throttle valve opening degree (TH) does not exceed a prescribed limit (THlim) and a rate of increase (Ta/t) in the throttle valve opening degree is equal to or lower than a predetermined opening degree increase rate (Tb/t) for a predetermined time period after start-up of the engine () is initiated. Thus, power output from the engine is controlled so as not to increase significantly for the predetermined time period. Accordingly, while the engine starts up, a shock that can be felt by a driver can be suppressed. In addition, variation in the amount of air taken into the engine when the engine is started is also reduced, which reduces variation in the amount of pollutants in the exhaust gas emitted while the engine starts up.

Control apparatus and method for internal combustion engine

In an engineincluding an in-cylinder injector, the valve timing of an intake valve is retarded by VVT (Variable Valve Timing) controlled by an engine ECU to decompress in a combustion chamber at engine startup. In accordance with a configuration in which the valve timing of intake valve is advanced in a stepped manner from an initial set value, fuel injection from in-cylinder injector is inhibited during the time when the advance is equal to or below a predetermined standard value, and fuel injection from in-cylinder injector is allowed when exceeding the predetermined standard value, whereby degradation in the exhaust emission level in accordance with start time decompression control can be suppressed.

Control apparatus for internal combustion engine

A hybrid ECU executes a program including the steps of: calculating an SOC of a battery when turn-on of pre-air-conditioning is requested; prohibiting pre-air-conditioning when the SOC does not satisfy a condition that the SOC is greater than an SOC (Y %) necessary for warm-up and running; and notifying a driver of prohibition of pre-air-conditioning.

Control device of vehicle

The technique of the invention determines whether input data for driving and controlling a cooling fan have any abnormality (steps Sand S), sets an actual drive level F* of the cooling fan to a high level (Hi) in the event of detection of any abnormality (step S), and controls a fan motor to drive the cooling fan at the set drive level F* (step S). This arrangement effectively prevents a temperature rise to an abnormally high level in any of an engine and motors even in the event of any abnormality arising in the input data.

Cooling system, control method of the same, and motor vehicle

A control method of a vehicle includes a step of running the vehicle in an EV running mode in accordance with an operation of a driver, a step of performing a warming-up running, when it is determined that warming up is required, and a step of prohibiting the EV running mode such that the warming up running can be performed.

Control apparatus and control method of vehicle

A delay time for delaying starting of an internal combustion engine in a hybrid vehicle is set to a predetermined time based on an engine coolant temperature and a state of an air conditioner switch. Starting of the engine is delayed for the predetermined time if it is determined that a vehicle can run using only a motor based on a required torque, a required power and an SOC of the battery. The predetermined time is determined based on a time necessary for completing preheating of an engine by a preheating device, preparations of sensors such as an air-furl ratio sensor, and warming-up of an exhaust gas purifying device. As a result, it is possible to efficiently perform start of the engine and operation immediately after the engine start, and to make control at the engine start time simple.

Hybrid vehicle and control method of same

In response to simultaneous ON settings of a heater switch signal HSW and an eco switch signal ESW, an eco priority map is set to an intermittent operation permission map (step S). The heater switch signal HSW is output from a heater switch that is operated to warm up a passenger compartment, while the eco switch signal ESW is output from an eco switch that is operated to give preference to improvement in fuel consumption of the vehicle over the heater function. The eco priority map is designed to allow intermittent operation of an engine in a lower range of cooling water temperature Tw of the engine than that in a heater-on state map set in response to OFF setting of the eco switch signal ESW and ON setting of the heater switch signal HSW. The control procedure of the invention refers to the intermittent operation permission map and determines whether the intermittent operation of the engine is allowed or prohibited, based on the current cooling water temperature Tw and a starting-time cooling water temperature Tst, which represents a temperature of cooling water at a first start of the engine since activation of the vehicle system (step S).

Hybrid vehicle and control method thereof

Growing community of inventors

Nisshin, Japan

Katsuhiko Yamaguchi