Nissan Motor Company Limited

Naoki Nakada

Takayuki Shimizu

Masaaki Uchida

Yohei Nakamura

Kiyoshi Hoshi

Kazuya Takahashi

Ikutaro Noji

Kunifumi Sawamoto

Kazuhiro Ishigami

Kenichi Gotou

Makoto Fukubayashi

Hideki Uema

Fumio Yukawa

Nobuyuki Kawai

Shozo Nakayama

Toyaki Nakagawa

A vehicle control device controls a vehicle including a drive motor connected to a rotation shaft of wheels, a battery that supplies electricity to the drive motor, and an internal combustion engine connected to the drive motor. The vehicle is equipped with, as traveling modes, a normal mode, and an eco-mode having a larger regenerative braking force than the normal mode obtained such that rotational energy of the wheels is converted into electrical energy. A controller stops the internal combustion engine and switches from the normal mode to the eco-mode when detecting at least an abnormality in the internal combustion engine during traveling of the vehicle.

Vehicle control method and vehicle control device

A fuel injection control method and system in a multi-cylinder direct injection type internal combustion engine. A first sensor detects whether the engine is in a start-up condition and, upon detection, generates a start-up signal. A second sensor generates an engine operating condition indicative signal. A third sensor detects an operative condition of the fuel pump. A basic period of injection based on the second sensor signal is calculated. A decrease in injection amount based on the fuel pump operative conditions sensed by the third sensor is determined and the basic period of injection is modified to compensate for the decrease in the injection amount. The injection valves are controlled according to the modified injection period.

Fuel injection control method and system in a cylinder-inside direct

A fuel injection control system for an in-cylinder direct injection, spark-ignition internal combustion engine employing a fuel injector through which fuel is injected directly into a combustion chamber of each of engine cylinders, comprises an engine-cylinder identification circuit for identifying an angular phase of each of the engine cylinders and for making a cylinder identification action, a first interrupt-injection circuit for executing a first interrupt injection operation for a first engine cylinder being on an intake stroke just after completion of the first cylinder identification action executed by the engine-cylinder identification circuit during an engine starting period, when exceeding a normal injection timing at the intake stroke for the first engine cylinder, and a second interrupt-injection circuit for executing a second interrupt injection operation for a second engine cylinder being on a compression stroke just after completion of the first cylinder identification action executed by the engine-cylinder identification circuit during the engine starting period, when exceeding a normal injection timing at the intake stroke for the second engine cylinder.

Fuel injection control system for in-cylinder direct injection,

In an engine idle speed control system associated with an air conditioner provided with an evaporator for evaporating a refrigerant compressed by a compressor actuated or deactuated by an engine near an evaporator freeze limit temperature, the engine idle speed is increased under consideration of thermal load applied to the compressor whenever the compressor is being actuated. The compressor 21 is deactuated when the temperature of air having passed through the evaporator 22 drops below a predetermined value, and actuated when the same temperature rises beyond another higher predetermined value. Whenever the compressor 21 has been deactuated, the time interval between the deactuation and the actuation of the compressor is measured. If the measured time interval is relatively short, since this indicates a relatively high thermal load applied to the compressor, the engine idle speed is increased. However, if the measured time interval is relatively long, since this indicates a relatively low thermal load, the engine idle speed is not increased, thus improving the fuel consumption rate and the compressor durability without frequently actuating and deactuating the compressor.

Engine idle speed control system for automotive vehicle

A system and method for controlling an air/fuel mixture for an internal combustion engine are disclosed in which an integration constant used for a calculation of an integration portion included in a feedback correction coefficient (.alpha.) of the air/fuel mixture ratio after a relationship between an actual air/fuel mixture raito and target (stoichiometric) air/fuel mixture ratio has been inverted is set and varied according to an engine driving condition, so that the integration constant meets requirements of a stability during an engine steady driving condition and a favorable responsive characteristic during an engine transient condition. In a preferred embodiement, a fuzzy control is applicable to the calculation of the integration constant.

System and method for controlling air/fuel mixture ratio for internal

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Kanagawa, Japan

Naoki Nakada