Nissan Motor Company Limited

Taketora Negome

Hiroshi Iwano

Susumu Komiyama

Hideaki Inoue

Yoshitaka Deguchi

Ichiro Yamaguchi

Hikaru Nishira

Yoshitaka Takagi

A vehicle driving assistance apparatus includes a brake operation sensing device to sense a driver's brake operation, a steering operation sensing device to sense a driver's steering operation, a forward, and a controller. The controller is configured to determine whether there is a need for avoiding the obstacle, by examining a possibility of contact of the vehicle with the obstacle, and to produce a yaw moment to an obstacle avoiding direction advantageous for avoiding the obstacle, from the time of detection of the driver's brake operation, to the time of detection of the driver's steering operation, by adjusting a wheel brake/drive force distribution among wheels resulting from the driver's brake operation when there is the need for avoiding the obstacle.

Apparatus and process for vehicle driving assistance

A target driving power is calculated in accordance with the operating condition, a fuel consumption rate per power unit is calculated at all the possible operating points of an engine () and a drive motor () to realize the target driving power, a target fuel consumption rate is set on the basis of the operating condition, and an operating point of the engine () and drive motor () at which a fuel consumption rate that is equal to the target fuel consumption rate can be realized is searched. When an operating point at which a fuel consumption rate that is equal to the target fuel consumption rate can be realized is not found, the fuel consumption rate relating to driving power is corrected with only the fuel consumption rate relating to electric power for charging a battery device set at a predetermined value which is smaller than the actual fuel consumption rate, an operating point at which the fuel consumption rate relating to driving power reaches a minimum is selected, and the engine () and drive motor () are controlled to achieve the selected operating point.

Drive control device for hybrid vehicle

A hybrid vehicle comprises a drive wheel (), an internal combustion engine (), a power generating motor () that generates an electric power by using an output power of the engine (), and a planetary gear set () that comprises a combination of a gear element that is driven by the engine (), a gear element that is connected to the power generating motor (), and a gear element that is connected to the drive wheel (). A target engine power is computed based on an accelerator operation amount. The engine () is controlled based on the target engine power. And control a rate of variation in the rotation speed of the engine () to be smaller, when the rotation speed of the power generating motor () increases than when the rotation speed of the power generating motor () decreases toward zero as a result of controlling the engine () based on the target engine power. Fuel consumption rate is thus improved.

Engine speed control for a hybrid electric vehicle

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Yokohama, Japan

Taketora Negome