Honda Motor Co., Ltd.

Dentsu Inc.

Daiki Nagata

Shiro Yagawa

Manabu Tanaka

Masahiro Mohri

Kazumi Yamazaki

Akiji Ando

Kei Hamada

Shun Maekawa

Kazutaka Nakai

Masahiko Natsume

A fuel cell system mounted on a vehicle includes: a fuel cell stack; a refrigerant circulation passage connected to the fuel cell stack; a refrigerant circulation pump arranged in the refrigerant circulation passage and configured to circulate a refrigerant; and a controller configured to control a power generation amount of the fuel cell stack according to a request driving force of the vehicle and control the refrigerant circulation pump. The controller is configured to set a rotational speed of the refrigerant circulation pump within a range equal to or lower than a rotational speed upper limit based on a temperature of the fuel cell stack, and the controller sets the rotational speed upper limit lower at a time a vehicle speed is equal to or lower than a stop determination value as compared with a time the vehicle speed is higher than the stop determination value.

Fuel cell system

The present disclosure optimally determines a contact between a user and an advertisement. An advertisement contact determination system according to one aspect of the present disclosure includes a communication unit configured to obtain position information of a device, and a control unit configured to determine that a user of the device has come into contact with an Out Of Home (OOH) advertisement if the OOH advertisement is included in a certain range in a traveling direction of the user based on the position information of the device. The communication unit obtains a log of a certain apparatus, and the control unit determines whether the device exists in vicinity of the certain apparatus in a certain period of time or not and, if the device exists, associates the log of the certain apparatus in the certain period of time with the device.

Advertisement contact determination system, advertisement contact determination device, and program

A method for cleaning a radiator of a vehicle, includes stopping the vehicle that includes a fuel cell through which a coolant is to pass. Electric power in the fuel cell is generated to raise a temperature of the coolant while stopping the vehicle. The coolant is circulated from the fuel cell to a radiator while stopping the vehicle. The coolant flowing from the radiator is supplied to an ion exchanger to remove ions from the coolant while stopping the vehicle.

Radiator cleaning treatment method and method for cleaning radiator

A waste heat recovery system includes a fuel cell, a coolant circulation flow passage, a first heat exchanger, a waste heat recovery flow passage, a second heat exchanger, an upstream end of the waste heat recovery flow passage, and a downstream end of the waste heat recovery flow passage. The coolant circulation flow passage includes a first coolant supply flow passage, a first coolant exhaust flow passage, and a first bypass flow passage. The upstream end is connected to at least one of an inlet coolant reservoir and the first coolant exhaust flow passage at a position downstream of a connection point between the first coolant exhaust flow passage and the first bypass flow passage. The downstream end is connected to at least one of the inlet coolant reservoir, an outlet coolant reservoir, and the first coolant supply flow passage.

Waste heat recovery system

Growing community of inventors

Tokyo, Japan

Daiki Nagata