| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect an abnormal cylinder information and A/D conversion start signal output from a port by a main microcomputer. <P>SOLUTION: An ECU 16 includes a main microcomputer 27 and a sub microcomputer 28. The main microcomputer 27 determines a fuel injection cylinder and outputs an injection signal, as well as port-outputs fuel pressure detection commands including A/D conversion cylinder signals P1 and P2 (cylinder information) and an A/D conversion start signal Q. The sub microcomputer 28 identifies the cylinder number based on the port-input A/D conversion cylinder signals P1 and P2 and transmits the recognized cylinder number to the main microcomputer 27 by communication, as well as acquires a fuel pressure transition by sequentially A/D converting a fuel pressure detection signal of the identified cylinder. The main microcomputer 27 determines whether the number of the received identified cylinder matches the number of the fuel injection cylinder, and when they do not match, resume is executed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
