BLACK SMOKE PREVENTER FOR DIESEL ENGINE

PURPOSE:To check an initial excess injection quantity by detecting such a case as the time of sudden acceleration involving intentional operation by an operator, while applying a proper filter to this accelerator operated variable, and operating the injection quantity as an artificial accelerator operated variable from the operational standpoint. CONSTITUTION:In this device, there are provided with a rack position sensor 2b, an operation detecting means detecting each operation of various operating levers 5, and accelerator sensor 7 detecting the opening of an accelerator lever and an engine speed sensor 8, and each detection signal out of these sensors is inputted into a governor controller 6. First, an initial valve of an accelerator filter is determined out of engine speed and injection quantity prior to a point of time rushed into a transient state. In addition, an accelerator operated variable before when rushed into the transient state is added to the said initial value, finding the added value. Afterward, a correction factor determined by a speed upping rate ad an accelerator filter integral quantity are multiplied at an optional period, and the multiplied value is added to the said added value, finding an internal pseudo-accelerator operated value, and thus an injection pump 2 is controlled.