Title:
FUEL CELL SYSTEM
Document Type and Number:
Japanese Patent JP2019067708
Kind Code:
A
Abstract:
To provide a fuel cell system capable of increasing circulation amount of fuel off-gas during low load, while restraining shortage of fuel gas in the fuel cell.SOLUTION: A fuel cell system has a fuel cell, a fuel injection system for injecting fuel gas flowing in from an accumulator part according to a duty ratio, a pressure regulator regulating the first pressure of the fuel gas flowing into the fuel injection system, an ejector for mixing the fuel off-gas with the fuel gas, a detector for detecting the second pressure of the fuel off-gas recirculated to the fuel cell, and a control section for controlling the duty ratio and the pressure regulator. The ratio of the diffuser diameter of the ejector and the nozzle diameter is lower than the value when the load is lower than a prescribed value, and the circulation flow rate becomes peak when the first pressure is a prescribed lower limit value, and when the load becomes lower than a prescribed value, the control section controls the pressure regulator so as to lower the first pressure, and controls the duty ratio so that the second pressure is maintained at the pressure before the load of the fuel cell lowers.SELECTED DRAWING: Figure 4
Inventors:
MATSUSUE MASAAKI
Application Number:
JP2017194608A
Publication Date:
April 25, 2019
Filing Date:
October 04, 2017
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M8/04746; H01M8/04; H01M8/04858
Domestic Patent References:
| JP2008190336A | 2008-08-21 | |||
| JP2008112585A | 2008-05-15 | |||
| JP2010272279A | 2010-12-02 | |||
| JPH1055814A | 1998-02-24 | |||
| JP2006310000A | 2006-11-09 | |||
| JP2003100334A | 2003-04-04 |
Foreign References:
| US20060246330A1 | 2006-11-02 |
Attorney, Agent or Firm:
Shuhei Katayama