Title:
内燃機関の可変動弁機構故障診断装置
Document Type and Number:
Japanese Patent JP4075811
Kind Code:
B2
Abstract:
A failure diagnosis for a slide sensor of a variable valve mechanism is performed when a valve working angle is at a value in the initial state. The initial state is set to a valve characteristic state where the valve working angle is at the maximum value. The maximum valve working angle corresponds to the refuge running performable region in which an engine can be started and refuge running can be performed. Therefore, even when it is difficult to adjust the valve working angle using rotation of a spiral cam due to a failure in the slide sensor, the refuge running can be performed only by maintaining the initial state by maintaining control. It is thus possible to increase reliability of the refuge running in the case where a failure has occurred in the variable valve mechanism.
Inventors:
Naohide Fuwa
Harufumi Muto
Harufumi Muto
Application Number:
JP2004007132A
Publication Date:
April 16, 2008
Filing Date:
January 14, 2004
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01L3/24; F02D13/02; F01L1/04; F01L13/00; G06G7/70
Domestic Patent References:
| JP2003269180A | ||||
| JP2000314329A | ||||
| JP2003155950A | ||||
| JP2003148606A | ||||
| JP200349672A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda