Toyota Jidosha Kabushiki Kaisha

Aisin Seiki Kabushiki Kaisha

Nippondenso Co., Ltd.

Ichiro Hosotani

Hiroshi Tanaka

Naohide Fuwa

Masaharu Hayashi

Ken Kuretake

Iwao Maeda

Yoshiki Chujo

Shinichiro Tanaka

Masahiko Hibino

Shigeo Kikori

Masaru Shimizu

Syuji Hirakata

Mitsuo Kikkawa

Shoichi Doi

Masahiko Miyahara

Tomohiro Tanaka

Hiroaki Nishimura

Yoshifumi Yamada

Hisataka Okado

Yoshihiko Sano

A hydrogen using system for installation in a vehicle has a methanol tank that stores methanol as a source material of hydrogen, which is a fuel of the hydrogen using system, a water tank that stores water, a methanol reformer that produces a hydrogen fuel from methanol and water, a first electromagnetic valve provided in a first channel connecting the methanol tank to the reformer, a polymer electrolyte fuel cell stack that generates power from the hydrogen fuel supplied from the reformer, a second electromagnetic valve provided in a second channel connecting the reformer to the fuel cell stack, an electronic control unit that controls various portions of the hydrogen using system, etc. When an impact occurs on the vehicle, the electronic control unit shuts the first channel and the second channel by forcibly closing the first and second electromagnetic valves based on a detection signal from the impact sensor. This hydrogen using system curbs reactions of hydrogen at the time of an accident or the like, thereby further improving safety of the system.

Hydrogen using system for installation in vehicle and control method for the system

An air-amount-first fuel-amount-second control apparatus for an internal combustion engine having an electronically-controlled throttle valve. The response characteristic of the throttle valve is stored, a target value of the throttle valve opening degree corresponding to the operating position of the accelerator pedal is calculated, the intake air valve closing time of the fuel injection cylinder is calculated in accordance with the engine operating condition, the time required for reaching a target throttle valve opening degree is calculated from the target throttle valve opening degree and the stored value of the response characteristic of the throttle valve, the throttle valve opening degree as of the intake air valve closing time is calculated from the calculated time required for reaching the target throttle valve opening degree and the intake air valve closing time of the fuel injection cylinder. A fuel supply amount constituting a target air-fuel ratio is calculated from the target air-fuel ratio and the intake air amount corresponding to the throttle valve opening degree as of the intake air valve closing time, and the fuel in the calculated amount is supplied to the engine fuel injection cylinder.

Control apparatus for internal combustion engine using air-amount-first

An apparatus for controlling an internal combustion engine having an electrically heated catalyst heats the catalyst with sufficient power without fluctuating the rotation speed of the engine. The apparatus has an alternator 2 driven by the engine 1, an intake controller 3 disposed in an intake system of the engine 1, to change the quantity of intake air, a battery 8 charged by the alternator 2, the catalyst 4 disposed in an exhaust system of the engine 1 and powered by the battery 8 and alternator 2, and a regulator 7 for changing the field current of the alternator 2, to change power to be generated by the alternator 2. When activating the catalyst 4, the intake controller 3 increases the quantity of intake air, and the regulator 7 increases power to be generated by the alternator 2. Increasing the field current of the alternator 2 is delayed behind increasing the quantity of intake air. Alternatively, increasing the quantity of intake air as well as the field current of the alternator 2 are carried out gradually.

Apparatus for controlling internal combustion engine having electrically

A throttle control apparatus includes a throttle opening adjusting device for regulating the throttle valve opening in such a manner that the throttle valve is located in a first position for assuring sufficient opening of the throttle valve upon ignition, with the throttle valve being rotatable after establishment of ignition or combustion. The throttle valve is then moved to a second position located between the first position and a fully closed position upon an electric failure.

Throttle control apparatus

A liquid mixing ratio detecting apparatus is designed so that an oscillation voltage generated by an oscillation unit is applied to one of a differentiating circuit and an integrating circuit, which is constituted by a combination of a capacitor composed of a pair of opposite electrodes for detecting a mixing ratio of a mixed liquid and a resistor, and a mixing ratio detecting unit produces a signal relating to an inclination rate of one of a differential waveform signal and an integration waveform signal, which is generated by one of the differentiating circuit and the integrating circuit, respectively, thereby obtaining a signal representing the mixing ratio of the mixed liquid on the basis of the produced signal relating to the inclination rate of the waveform signal.

Apparatus for detecting a liquid mixing ratio

Growing community of inventors

Numazu, Japan

Ichiro Hosotani