Model based Idle Speed Control System for automobile engine using Electric Throttle System

Abstract

Recently, it has been important to decrease fuel consumption of automobile engine for the sake of reducing the amount of CO₂. The consumption is less, if idle speed is lower. However idling stability at low idle speed tends to be worse than the one at the high idle speed. So idle speed control must be more accurate. In this paper, we propose an engine model based feed-forward idle control system. The model based control system has obtained several better control results.