Title:
ANOMALY DETERMINATION DEVICE FOR EVAPORATED FUEL PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/164320
Kind Code:
A1
Abstract:
An anomaly determination device for an evaporated fuel processing device has the following: an evaporated fuel processing device 60 provided with a canister 61, a purge path 62, and a purge valve 66; a first pressure sensor 43 and/or a second pressure sensor 45 for acquiring a purge downstream pressure, which is a pressure downstream of the purge path 62; a third pressure sensor 53 that acquires an in-canister pressure; and a PCM 70 that calculates the purge flow amount per unit time on the basis of the purge downstream pressure and the degree to which the purge valve 66 is open, calculates the cumulative purge flow amount by totaling the purge flow amount, and performs anomaly determination in the evaporated fuel processing device 60 on the basis of the in-canister pressure and the cumulative purge flow amount. Specifically, the PCM 70 performs anomaly determination on the basis of the in-canister pressure whenever the cumulative purge flow amount is at least a prescribed flow amount.
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Inventors:
HASHIMOTO HIDETOSHI (JP)
TANAKA DAISUKE (JP)
HIGUCHI YUSUKE (JP)
KIKUCHI TAKAYUKI (JP)
TANAKA DAISUKE (JP)
HIGUCHI YUSUKE (JP)
KIKUCHI TAKAYUKI (JP)
Application Number:
PCT/JP2017/011764
Publication Date:
September 28, 2017
Filing Date:
March 23, 2017
Export Citation:
Assignee:
MAZDA MOTOR (JP)
International Classes:
F02M25/08
Foreign References:
| JP2001012313A | 2001-01-16 | |||
| JP2013160108A | 2013-08-19 | |||
| JP2000045885A | 2000-02-15 | |||
| US20130000395A1 | 2013-01-03 | |||
| US20150052986A1 | 2015-02-26 |
Other References:
See also references of EP 3418547A4
Attorney, Agent or Firm:
TANAKA Shinichiro et al. (JP)
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