| 摘要 |
<p>PURPOSE:To obtain a stable supercharge pressure characteristic, by detecting the displacement of a variable volume means of a turbocharger to be concurrently used as a discriminative parameter in an operative region so that an integration control is adequately performed for a variable volume region and an exhaust bypass region. CONSTITUTION:Each detecting means (a)-(c) detects respectively an engine operative condition, intake supercharge pressure and the displacement of an intake volume variable member of a turbocharger. And an arithmetic means (d) calculates a proportional part and an integration part of the feedback correction amount so as to eliminate a deviation between the intake supercharge pressure and the target supercharge pressure. While a discriminating means (e) discriminates an operative region performing feedback correction while selects the proportional part and the integration part of the feedback correction amount in accordance with the corresponding operative region. Further a control means (f) outputs a supercharge pressure control signal in accordance with the selected feedback correction amount. Here an operating means (g) controls the intake supercharge pressure on the basis of the supercharge pressure control signal.</p> |
