Nissan Motor Company Limited

Jatco Corporation

Renault S.a.s.

Kakuzou Kaneko

Taiichi Onoyama

Takeo Aizawa

Shingo Suzuki

Kenichi Watanabe

Hironori Miyaishi

Tetsuya Izumi

Akito Suzuki

Kouichi Kotsuji

Hiroaki Hoshikawa

Masumi Fujikawa

Keisuke Iwado

Tomoyuki Mizuochi

Ryuichi Arai

Takanobu Mouri

Ryuzo Noguchi

Hirotaka Koyama

Kazuo Muraki

Satoshi Harui

Akihiro Toyofuku

Seishi Shimamura

Masashi Ono

Fumitaka Nagashima

Hiroshi Arita

Takateru Kawaguchi

Hajime Tasaka

Takayoshi Ichihara

Kazuki Ochiai

Susumu Kubo

Kazuhiro Miyachi

Yasuhiro Konishi

Yukinaga Moriguchi

Tomohiro Kawata

A control method and a control device are provided for an internal combustion engine structured to vary a mechanical compression ratio by varying a range of slide of a piston with respect to a cylinder bore, and structured to control a flow of cooling water in a water jacket formed around the cylinder bore, wherein variation of the mechanical compression ratio causes the piston to slide on a corroded portion formed in the cylinder bore. A control process includes: acquiring a temperature correlating with a cylinder bore wall temperature; and stopping the flow of cooling water in the water jacket, in response to a condition that the acquired temperature is lower than a preset temperature point.

Control method for internal combustion engine and control device for internal combustion engine

A control method and a control device are provided for an internal combustion engine structured to vary a mechanical compression ratio by varying a range of slide of a piston with respect to a cylinder bore. A control process includes: acquiring a temperature correlating with a cylinder bore wall temperature; fixing the mechanical compression ratio to a preset compression ratio point, in response to a condition that the acquired temperature is lower than a preset temperature point; and setting the preset temperature point higher than a point corresponding to a point of the cylinder bore wall temperature at which condensed water occurs in the cylinder bore.

An oil pump driving control device of a vehicle having a main oil pump () that is driven by a motor/generator () and produces a pump discharge oil to a first clutch (), a second clutch () and a belt-type continuously variable transmission () provided on a driving force transmission line. A hybrid control module () is provided in this FF hybrid vehicle. The hybrid control module () is configured to perform a control so that during vehicle stop, the lower an ATF oil temperature is, the more the pump driving energy to drive the main oil pump () is decreased. With this control, consumption energy during the vehicle stop can be reduced.

Vehicle oil pump driving control device

A control device for a hybrid vehicle having an engine, a motor which drives by power of a battery, and an air conditioner which operates by power of the battery, includes a target driving force calculator configured to calculate a target value of driving three transmitted to a drive wheel from a driving source as target driving force, an air conditioner manager configured to manage an ON/OFF state of an air conditioner, and a controller configured to calculate a request output by adding the target driving force to a system output requested to the drive source by a system request, calculate an operation point of the engine for optimally driving the engine in response to the request output, control the engine to drive at the operation point, and control the motor based on the request output.

Control device for hybrid vehicle and control method

A controller is provided so as to control, when an electric vehicle (EV) mode is selected, a belt clamping pressure on the basis of discharged oil from a main oil pump which is driven by a motor generator. The controller is provided for a hybrid vehicle and is configured to perform control such that when the vehicle is stopped in the EV mode and a creep cut condition which does not require creep torque from the motor generator is met, a first motor idling rotation speed is set as a motor rotation speed. When the vehicle is stopped in the EV mode and a standby learning control completes learning of a zero-point oil pressure command value, the controller reduces a rotation speed of the motor generator to a second motor idling rotation speed which is lower than the first motor idling rotation speed.

Control device for hybrid vehicle

A control device for a hybrid vehicle has an engine, a starter motor that starts the engine, a driving motor that transmits a motor torque to the engine and a drive wheel, a starting motor selective control unit that starts the engine using the starter motor in response to a driving force request by a driver of the hybrid vehicle during a selected mode of operation in which the driving motor serves as the driving source, and that starts the engine using the driving motor in response to a system request.

Control device for a hybrid vehicle

A control device is provided for controlling a hybrid vehicle including an engine, a motor generator, and a battery arranged to be charged by and to discharge to the motor generator. The control device includes an abnormality judging section configured to judge whether or not an abnormality is generated in the engine. The control device further includes an assist prohibition section configured to prohibit the motor generator from being used as a power source when the abnormality is generated in the engine.

A control system for a hybrid vehicle is provided with an abnormality detection unit, a start determination unit, and a start control unit. The abnormality detection unit detects abnormality in at least one of an engine, a first clutch, and an automatic transmission. The start determination unit determines whether or not to allow the engine to be started, and the start control unit controls to start the engine. If an abnormality has been detected by the abnormality detection unit, the start determination unit inhibits the start control unit from starting the engine, and maintains the inhibition even when the abnormality has been eliminated, when the accelerator pedal opening is larger than a predetermined value.

Control device and control method for hybrid vehicle

An automatic transmission has a transmission control section performing a control so that a transmission ratio defined as input rpm/output rpm of the automatic transmission becomes a target transmission ratio, a slip control section slip-controlling a frictional engagement element in the automatic transmission so that the input rpm becomes a value obtained by multiplying the output rpm by the target transmission ratio also adding a predetermined slip revolution speed; and an abnormality judgment section judging abnormality in the automatic transmission. When the slip-control is not in progress, if an actual transmission ratio is out of a predetermined range of the target transmission ratio, the abnormality judgment section judges that abnormality occurs. When the slip-control is in progress, if a value obtained by correcting the actual transmission ratio on the basis of the slip revolution speed is out of the predetermined range, the abnormality judgment section judges that abnormality occurs.

Automatic transmission

Automatic stop/restart device of vehicle engine

Growing community of inventors

Kanagawa, Japan

Kakuzou Kaneko