Nissan Motor Company Limited

Fuji Electric Co., Ltd.

Nissan Motor Corp.

Takeshi Aso

Toshio Kikuchi

Hiroyuki Hirano

Eiji Inada

Shinichiro Kitada

Ryuichi Idoguchi

Yutaro Kaneko

Shinichirou Kitada

Yuutarou Kaneko

Mitsunori Kumada

Shigenori Kinoshita

Takao Yanase

Koetsu Fujita

Yuzo Nakano

Masahiko Hanazawa

Tomoharu Nakayama

A vehicle includes a fuel tank, a fuel amount detecting device and a control device. The fuel amount detecting device is configured to detect an amount of fuel inside the fuel tank. The control device is configured to calculate an estimated refueling amount that diminishes fuel inside the fuel tank from degrading based on a usage history of the vehicle. The control device is further configured such that the control device stops refueling based on an amount of fuel detected by the fuel amount detecting device and the estimated refueling amount.

Control device to minimize degradation of fuel in a vehicle fuel tank

An energy supply (ES) is formed by a fuel cell (), a power distributor () connected to the fuel cell (), and a secondary cell () connected to the power distributor (), a whole load set (WL) is connected to the power distributor (), and a controller () controls the power distributor () to warm the energy supply (ES) by alternatively repeating a power charging distribution (S) in which power (Gm) generated at the fuel cell () is distributed to the secondary cell () and the load set (WL), and a power discharging distribution (S) in which a sum of power (Gr) generated at the fuels cell () and power (Dp) discharged from the secondary cell () is distributed to the load set (WL).

Fuel cell system and control method

A fuel cell system and a related control method are disclosed wherein, during start-up of a fuel cell stack, a controlleroperates a DC/DC converterin a voltage control mode to allow an electric power to be supplied from a secondary batteryto a loadat an output voltage managed by the DC/DC converter. Under such a condition, an electric power level appearing when a voltage level of the electric power to be supplied from the secondary battery to the load lies at a value greater than an open voltage level of the fuel cell stack. Next, the DC/DC converteris operative in an electric power control mode to allow the electric power to be supplied from the secondary battery to the load at a managed electric power output. Then, a level of the electric power to be supplied to the load is detected with the DC/DC converter, which permits the electric power to be supplied from the secondary battery to the load at an electric power level less than a resulting detected electric power level.

Fuel cell system and related control method

An engine is activated to drive a generator when an electrical output is required. The required electrical output (PO) is searched and the necessary engine output is calculated. The basic driving point (NO, TO) which obtains maximum fuel efficiency is set at that output (S S ). The load of the generator is controlled so as to reach the set basic driving point. When the catalyst temperature is lower than a set value, while maintaining the required electrical output, the basic driving point is varied to a driving point (Ncold, Tcold) which will raise the exhaust gas temperature (S ). Furthermore when the temperature of the peripheral engine components in the engine room is higher than a set value, while maintaining the required electrical output, the driving point is varied to a driving point (Nheat, Theat) which will lower the exhaust gas temperature (S S ). Hence while maintaining the electrical output, it is possible satisfy each component temperature condition. Therefore while maintaining drivability, fuel efficiency performance, lowering exhaust gas emissions and component deterioration can suppressed.

Generator control device for an electrical automobile

A generating control device for a hybrid vehicle includes a motor,for driving the hybrid vehicle, a battery,for driving the motor, a generator,for supplying the motor,and the battery,with electricity, an engine,for driving the generator,and a control unit,. In operation, the unit,operates to change the operations of the generator,and the engine,in both of the normal generating mode and the battery protection mode. Therefore, it is possible to reduce the deterioration of the battery,of the hybrid vehicle and to ensure the fine driving performance.

Generating control device for hybrid vehicle

By calculating a fuel vapor quantity in a fuel tank based on a fuel temperature and a fuel residual quantity in the fuel tank, then calculating a fuel vapor purge quantity based on an engine revolution number and engine torque when an engine is driven, and then estimating a fuel vapor quantity captured in a vapor capturing unit based on the fuel vapor quantity and the fuel vapor purge quantity, the engine can be driven to purge the fuel vapor to the engine before the fuel vapor overflows the vapor capturing unit to thus be discharged into the air.

Method of controlling generator driving engine and system for embodying

A hybrid electric vehicle comprises an electric motor, a battery pack for the electric motor, a generator driven by an engine to provide electric power used for charging the battery pack, and a battery management for the battery pack. The battery management determines a current value of battery temperature (BT) of the battery pack and a current value of state of charge (SOC) within the battery pack. What are stored are a first set of varying SOC values and a second set of varying SOC values against varying BT values. The first set of varying SOC values are minimum SOC values required for the battery pack to produce a constant electric power output at varying BT values. The second set of varying SOC values are each indicative of an allowable upper limit to the quantity of electric charge that will accumulate in the battery pack due to operation of charging the battery pack with a constant electric power input at a corresponding BT value. The battery management provide an actuator command for control of electric power input upon charging the battery pack in response to the current value of BT, the current value of SOC, the first set of varying SOC values and the second set of varying SOC values.

Hybrid electric vehicle with battery management

A driving device controls a permanent-magnet synchronous motor having a permanent magnet in its rotor using a voltage-type inverter supplying drive power for the synchronous motor, makes the torque of the synchronous motor and the d-axis current flowing in the synchronous motor in the direction of the magnetic flux generated by the permanent magnet approach their own command values, and performs weakening field control by decreasing the d-axis current. To perform the above described control without complicated d-axis current command value operations or temperature amendments to motor constants, the driving device includes a proportional controller for outputting a d-axis signal proportional to the deviation between a d-axis current detection value and a d-axis current command value for the motor. A d-axis voltage command value and a q-axis voltage command value are determined according to the d-axis signal and a q-axis signal obtained based on the deviation between a q-axis current detection value, which is a component in the direction normal to the magnetic flux, and the torque command value for the motor. A voltage command vector is obtained from the d-axis voltage command value and the q-axis voltage command value. The voltage command vector is PWM-converted and a voltage-type inverter control signal is generated.

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Zushi, Japan

Takeshi Aso