Title:
METHOD AND APPARATUS FOR INSPECTING VARIABLE DYNAMIC VALVE APPARATUS
Document Type and Number:
Japanese Patent JP3428429
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To highly accurately and easily inspect the operation of a variable dynamic valve apparatus.
SOLUTION: A variable dynamic valve apparatus is constituted of a variable dynamic valve mechanism 20 for varying a relative rotation phase of a crank shaft 5 and a cam shaft 6, an oil pump 16 for supplying a hydraulic oil to the mechanism 20, a hydraulic control valve 19 for controlling the hydraulic oil, etc. The variable dynamic valve apparatus 20 is driven while the crank shaft 5 of an internal combustion engine 1 equipped with the variable dynamic valve apparatus is forcibly rotated from the outside by an electric motor 27. A control device 27 calculates an operation speed of the variable dynamic valve mechanism 20 from the output signals of a crank angle sensor 18 and a cam angle sensor 12, and detects an operation failure of the variable dynamic valve apparatus on the basis of the operation speed.
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Inventors:
Direct Maruta
Application Number:
JP11883098A
Publication Date:
July 22, 2003
Filing Date:
April 28, 1998
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01M15/04; F01L13/00; G01M15/00; (IPC1-7): G01M15/00; F01L13/00
Domestic Patent References:
| JP8264820A | ||||
| JP1038761A |
Attorney, Agent or Firm:
Hironobu Onda
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