Patent Number: 6,297,567

Title: Engine control system and vehicular anti-theft system

Abstract: A vehicular anti-theft device having a high security performance against the theft of the vehicle without adding additional components is disclosed. The vehicular anti-theft device mainly includes a code collator and an engine ECU connected to the code collator so as to communicate each other. The code collator detects whether a password code of an ignition key inserted into the ignition key cylinder accords with a password code of a vehicle. The engine ECU detects whether an engine should be started up or not by communicating with the code collator when an ignition key is detected to be turned on. Here, the engine ECU generates a digital data by A/D converting analog signals to be used for engine controlling, generates a transmission data by serially combining lower 2-bits of each A/D converted data, and then sends the transmission data to the code collator. Therefore, the communication data between the engine ECU and the code collator can be changed at random without adding additional components.

Inventors: Yano; Masato (Okazaki, JP)

Assignee: Denso Corporation

International Classification: B60R 25/04 (20060101); G06F 007/04 ()

Expiration Date: 10/02/2018