Evaluation method of diagnostic function for variable valve...

Details Evaluation method of diagnostic function for variable valve... Evaluation method of diagnostic function for variable valve...

2007-09-04

2007-09-04

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

11272875

ABSTRACT:
Evaluation method of evaluating a diagnosing function for a variable valve mechanism of an engine valve in which a desired value used for feedback-control of the variable valve mechanism is subjected to a low-pass filter processing so as to produce a state such that a response delay of the variable valve mechanism is generated, and a transient response of the variable valve mechanism is diagnosed in this state. As a result, if it is not determined that a response delay is generated, it is determined that the diagnosing function is abnormal. An evaluation apparatus for carrying out the method is also disclosed.

REFERENCES:
patent: 5495830 (1996-03-01), Wu
patent: 6401016 (2002-06-01), Yoshino et al.
patent: 2004/0083071 (2004-04-01), Sawaoka
patent: 10-153104 (1998-06-01), None
patent: 2000-73794 (2000-03-01), None
patent: 2001-12262 (2001-01-01), None
patent: 2001-164951 (2001-06-01), None

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