Patent ID: 6796924
Filing Date: 2004-09-28
Classification: F02D,Y10T

Abstract:
An engine revolution controlling apparatus having a fuel supply controlling means for controlling a supply of fuel so that a difference between an actual number of revolutions and a target number of revolutions in the engine is converged at zero, characterized whereinthe fuel supply controlling means comprises a throttle valve driven by a stepping motor and a central processing unit for calculating a control quantity of the stepping motor, the central processing unit including a means for correcting the difference between the target number of revolutions and the actual number of revolutions with an adjustment based on a difference between the actual number of revolutions and a previous number of revolutions and a difference between the previous number of revolutions and a number before the previous number of revolutions and a means for determining the control quantity based on the corrected difference; wherein the central processing unit includes an adjustment calculating means for dividing the control quantity by a subtraction of at least a function of either a throttle opening or the actual number of revolutions of the engine from a predetermined gain.