Title:
EVAPORATED FUEL TREATMENT DEVICE AND METHOD FOR LEARNING VALVE-OPENING START POSITION OF BLOCKING VALVE IN EVAPORATED FUEL TREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/130708
Kind Code:
A1
Abstract:
A device for controlling an evaporated fuel treatment device, which includes a blocking valve that is installed in a vapor passage connecting a fuel tank and a canister and that has a valve body which axially reciprocates relative to a valve seat, learns a valve-opening start position of the blocking valve on the basis of changes in the internal pressure of the fuel tank when the axial distance between the valve body and the valve seat is changed. During learning of the valve-opening start position, when the learning is interrupted, a command value for the axial distance immediately preceding the interruption is stored, and when a learning timing for the next valve-opening start position arrives after the learning interruption, the learning of the valve-opening start position is carried out with the command value for the axial distance immediately preceding the interruption used as an initial command value.
Inventors:
FUKUI KEITA (JP)
MIYABE YOSHIKAZU (JP)
MIYABE YOSHIKAZU (JP)
Application Number:
PCT/JP2017/000747
Publication Date:
August 03, 2017
Filing Date:
January 12, 2017
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
AISAN IND (JP)
AISAN IND (JP)
International Classes:
F02M25/08; F02M37/00
Foreign References:
| JP2015110913A | 2015-06-18 | |||
| JP2000008974A | 2000-01-11 | |||
| JP2015102009A | 2015-06-04 | |||
| JP2014080879A | 2014-05-08 |
Attorney, Agent or Firm:
ITEC INTERNATIONAL PATENT FIRM (JP)
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