Fuel injection control system for internal combustion engine e.g. diesel engine, has transfer section that transfers fuel injection rate parameter in controller memory to injector memory, when internal combustion engine is turned off

摘要

The system has pressure sensor (20) to detect change in fuel pressure due to fuel injection by fuel injector (10). A control unit (30) computes fuel injection rate parameter based on fuel pressure waveform for controlling fuel injector operation. The control unit has learning portion to memorize and update fuel injection rate parameter in controller memory in association with fuel injection amount and pressure. A transfer section transfers fuel injection rate parameter memorized in controller memory to injector memory (23a), when internal combustion engine is turned off.