GAS LEAKAGE DETECTION DEVICE - TOYOTA MOTOR CORP

Title:

GAS LEAKAGE DETECTION DEVICE

Document Type and Number:

Japanese Patent JP2006216310

Kind Code:

A

Abstract:

To provide a gas leakage detection device capable of correctly detecting abnormality of a shutoff valve at an upstream side, even if gas leakage is generated at a downstream side.

The gas leakage detection device of a fuel cell system is provided with shutoff valves (SV1 to SV4). Fuel gas density detection means (C1 to C6) are arranged at a fuel gas flow passage (14) arranged at a downstream side of the shutoff valves (SV1 to SV4). Gas leakage at the shutoff valves (SV1 to SV4) is detected depending on the fuel gas density detected by the fuel gas density detection means (C1 to C6).

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Inventors:

YOSHIDA HISAHIRO

Application Number:

JP2005026621A

Publication Date:

August 17, 2006

Filing Date:

February 02, 2005

Export Citation:

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Assignee:

TOYOTA MOTOR CORP

International Classes:

H01M8/04; G01M3/00; G01M3/04

Attorney, Agent or Firm:

Yoshiyuki Inaba
Shinji Oga
Toshifumi Onuki

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