Patent ID: 7048598
Filing Date: 2006-05-23
Classification: B63H

Abstract:
1. A method for controlling a boost pressure in a turbocharger of a jet propulsion boat using a controller to control the boost pressure, the method comprising the steps of: (a) receiving a throttle valve angle input value; (b) determining whether the throttle valve angle input value reaches a set throttle angle value or more; (c) setting a preset value of a boost pressure after the throttle angle input value reaches the set throttle angle value or more; (d) receiving an engine speed input value; (e) determining whether the engine speed input value reaches a set engine speed value or more; (f) setting a first fixed time after the engine speed input value reaches the set engine speed value or more; (g) calculating a preset reset value of a boost pressure after the first fixed time has elapsed; (h) setting an added value defined by adding the preset reset value and the preset value; (i) setting a second fixed time after the added value is set; and (j) controlling the boost pressure of the turbocharger based on the added value and until the second fixed time elapses.