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1. (WO2018163578) EVAPORATED FUEL PROCESSING DEVICE, PURGE GAS CONCENTRATION DETECTION METHOD, AND CONTROL DEVICE FOR EVAPORATED FUEL PROCESSING DEVICE

Pub. No.:    WO/2018/163578    International Application No.:    PCT/JP2017/047115
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Thu Dec 28 00:59:59 CET 2017
IPC: F02M 25/08
Applicants: AISAN KOGYO KABUSHIKI KAISHA
愛三工業株式会社
Inventors: ASANUMA Daisaku
浅沼 大作
Title: EVAPORATED FUEL PROCESSING DEVICE, PURGE GAS CONCENTRATION DETECTION METHOD, AND CONTROL DEVICE FOR EVAPORATED FUEL PROCESSING DEVICE
Abstract:
When a purge control valve is in a supply state of supplying purge gas from a canister to an intake tube and a pump is being driven, a concentration detector detects the concentration of a purge gas for an open purge control valve when the duty ratio of the purge control valve is a prescribed value or greater, and the concentration detector detects the concentration of the purge gas for a closed purge control valve when the duty ratio of the purge control valve is less than the prescribed value.