Internal combustion engine abnormality detection device

Title:

Internal combustion engine abnormality detection device

Document Type and Number:

Japanese Patent JP6354734

Kind Code:

B2

Abstract:

An abnormality detection device of an internal combustion engine includes an ECU that is an abnormality detection unit detecting a leakage occurrence of a second pure pipe. When the internal combustion engine is in a supercharging operation state that a supercharger operates and the second purge pipe is closed by a second purge valve, the ECU detects the leakage occurrence of the second purge pipe based on a differential pressure between a pressure in the second purge pipe and an atmospheric pressure. In this case, the valve pressure in the second purge pipe is a pressure in the second purge pipe between the second purge valve and the intake pipe.

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Inventors:

Maenagawa Yoshinori
Masanori Kurosawa
Takaaki Nakano

Application Number:

JP2015223612A

Publication Date:

July 11, 2018

Filing Date:

November 16, 2015

Export Citation:

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Assignee:

株式会社デンソー

International Classes:

F02M25/08

Domestic Patent References:

JP2007278094A
JP2016020675A

Foreign References:

US20080264156

Attorney, Agent or Firm:

Toru Kamada
Takuma Tsuda
Kentaro Ito

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