Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Mitsuharu Imaseki

Takeshi Ushio

Yoshirou Shimoyama

Takayuki Ogawa

Akio Yamamoto

Takatsugu Koyama

Hitoshi Takahashi

Naoaki Takeda

Susumu Nakajima

Hiromi Matsuura

Kaoru Horie

Mamoru Yoshikawa

Hiroyuki Hattori

Masaki Takayama

Yoshiro Shimoyama

Teruaki Kawasaki

Katsumi Saitou

An apparatus for cooling a fuel cell, which generates power by supplying air and a fuel gas, in which a cooling liquid is circulated between the fuel cell and a heat exchanger is disclosed. The cooling apparatus of the present invention separates the gas introduced into the cooling liquid, mixes the separated gas with the air supplied to or exhausted from the fuel cell, and then exhausts the gas.

Apparatus for cooling fuel cell

A cooling method for a fuel cell using a heat exchanger is provided. The method comprises the steps of: providing an ion exchanger in a circulation system for the cooling fluid; decreasing ion concentration in the cooling fluid by circulating the cooling fluid through the fuel cell and the ion exchanger when the temperature of the cooling fluid is below a thermostat operating temperature; distributing a portion of the cooling fluid discharged from the fuel cell, mixing the portion of the cooling fluid returning from the heat exchanger with another portion of the cooling fluid whose ion concentration has been decreased in the previous step, and returning the cooling fluid mixture to the fuel cell, when the temperature of the cooling fluid is approaching the thermostat operating temperature; and cooling the fuel cell by circulating the cooling fluid through the fuel cell and the heat exchanger after the temperature of the cooling fluid reaches the thermostat operating temperature. By using this cooling method, the cooling fluid having a high conductivity is not distributed to the fuel cell.

Cooling method for fuel cell

The cooling structure for a fuel cell vehicle comprises a fuel cell, a drive motor for driving the fuel cell vehicle using the energy generated by the fuel cell, a first cooling flow passage for cooling the fuel cell using a main radiator, and a second cooling flow passage for cooling the drive motor or the power control unit of the drive motor using auxiliary radiators. The main radiator is disposed in the central portion of the front surface of a vehicle body. The auxiliary radiators are respectively disposed on the front surface of the vehicle body in such a manner that their heat exchange surface are situated shifted in the vehicle-width direction so as to prevent them from being overlapped with the heat exchange surface of the main radiator.

Cooling structure for fuel cell vehicle

The present invention provides a cooling system of fuel cell, which solves the gas biting noise problem by trapping bubble in a coolant, gives protection to a stack (MEA) and the membrane of a humidifier by regulating the coolant pressure of fuel cell and improves the life of a ion exchanger by preventing foreign materials (carbonate ion etc.) from dissolving into the coolant.

Cooling system and cooling process of fuel cell

A cooling system for a fuel cell and a fuel cell powered vehicle are disclosed. The cooling system and the fuel cell powered vehicle have a primary circulation passage adapted to circulate primary coolant for cooling the fuel cell, and a secondary circulation passage adapted to circulate secondary coolant for cooling a heat generating source including at least an electric vehicle motor. The primary coolant and the secondary coolant are driven by primary and secondary circulation pumps that are circulated by a single common drive motor, with the primary coolant being cooled with the secondary coolant in a common heat exchanger.

Cooling system for fuel cell powered vehicle and fuel cell powered vehicle employing the same

In a cooling device for a fuel cell, a primary cooling liquid discharged from a heat exchange device is partially flowed to an ion exchange device through a communication passage B. A flow rate regulator provided in the communication passage B regulates the flow rate of the primary cooling liquid flowed into the ion exchange device . Accordingly, even if the electricity demanded to be outputted from the fuel cell increases or decreases, it is possible to manage conductivity in the primary cooling liquid and useless consumption energy can be reduced to a minimum.

Cooling device for a fuel cell

A gasoline direct-injection engine includes a cavity provided in a top portion of a piston and constituting a portion of a combustion chamber defined between a cylinder head and the top portion of the piston, a fuel injection valve mounted in the cylinder head for injecting gasoline directly into the combustion chamber, and a spark plug also mounted in the cylinder head to face the combustion chamber. In this gasoline direct-injection engine, the fuel injection valve facing a substantially central portion of a ceiling surface of the combustion chamber is mounted in the cylinder head to have an axis substantially parallel to an axis of the piston, and the cavity provided in the top portion of the piston and disposed below the fuel injection valve and the spark plug is defined so that it is deeper in an area corresponding to the spark plug than in an area corresponding to the fuel injection valve. Thus, it is possible to achieve a stable lean laminar burn in wide ranges of rotational speed and load of the engine, thereby providing an improvement in fuel consumption and an enhancement in nature of an exhaust gas.

Growing community of inventors

Saitama, Japan

Mitsuharu Imaseki