| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and device easily monitoring control functions of control elements of an air system inexpensively and accurately. <P>SOLUTION: In the method for monitoring the control functions of the control elements 3, 4, 6, and 7 of the air system of an internal combustion engine, the air system has a control system behavior depending on a condition of the control elements 3, 4, 6 and 7. The control functions of the control elements are monitored by observing the control system behavior. The control elements 3, 4, 6, and 7 are controlled by control instructions related to two predetermined control positions at two different time points. The control functions are monitored by observing first and second control system behaviors in the two predetermined control positions of the control elements 3, 4, 6, and 7. <P>COPYRIGHT: (C)2009,JPO&INPIT |
