公开(公告)号：US20180238273A1

公开(公告)日：2018-08-23

申请号：US15752933

申请日：2016-10-25

Applicant: DENSO CORPORATION

Inventor： Yoshinori MAEGAWA ,  Masanori KUROSAWA ,  Kosuke NAKANO

IPC: F02M25/08

CPC classification number: F02M25/0809 ,  F02D41/0007 ,  F02D41/003 ,  F02D41/0045 ,  F02D41/22 ,  F02D2041/225 ,  F02D2200/0406 ,  F02D2250/41 ,  F02M25/08 ,  F02M25/0836 ,  F02M25/089

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.