Toyota Jidosha Kabushiki Kaisha

Kosuke Suzui

Susumu Kojima

Keiso Takeda

Nobuhiko Koga

When a time average of square values of charge-discharge current exceeds a predetermined reference value and when a state of charge of a battery is higher than a preset reference level, the procedure corrects a basic input limit set according to a battery temperature and the state of charge and sets the corrected basic input limit to an effective input limit. When the state of charge is lower than a preset reference level, the procedure of the invention corrects a basic output limit set according to the battery temperature and the state of charge and sets the corrected basic output limit to an effective output limit. This arrangement more adequately sets the effective input limit and the effective output limit, compared with a technique of simultaneously correcting the effective input limit and the effective output limit based on the temperature of the battery.

Power supply device, input-output limit setting method in power supply device, vehicle, and vehicle power control method

A device for controlling fuel injection into an internal combustion engine is disclosed. The device comprises an accumulator for supplying pressurized fuel to a fuel injection valve, a high-pressure pump for discharging fuel into the accumulator using the engine as a power source, and a low-pressure pump for discharging fuel into the high-pressure pump using a power source other than the engine. At the start of the engine, the fuel discharged from the low-pressure pump is substantially directly introduced into the accumulator through a pump chamber of the high-pressure pump. To elevate the pressure within the accumulator for a short period to a fuel pressure capable of injecting fuel at the start of the engine, an opening and closing valve is provided in a suction passage that communicates the discharge side of the low-pressure pump with the suction side of the high-pressure pump, and is maintained to be opened at the start of the engine.

Growing community of inventors

Aichi-gun, Japan

Kosuke Suzui