Title:
EVAPORATED FUEL PROCESSING DEVICE, PURGE GAS CONCENTRATION DETECTION METHOD, AND CONTROL DEVICE FOR EVAPORATED FUEL PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/163578
Kind Code:
A1
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.
Inventors:
ASANUMA DAISAKU (JP)
Application Number:
PCT/JP2017/047115
Publication Date:
September 13, 2018
Filing Date:
December 27, 2017
Export Citation:
Assignee:
AISAN IND (JP)
International Classes:
F02M25/08
Foreign References:
| JP2002115605A | 2002-04-19 | |||
| JPH0972254A | 1997-03-18 | |||
| JPH09112309A | 1997-04-28 | |||
| JP2007170221A | 2007-07-05 |
Attorney, Agent or Firm:
KAI-U PATENT LAW FIRM (JP)
Download PDF: