Patent ID: 7343899
Filing Date: 2008-03-18
Classification: F02B,F02D,F02M

Abstract:
1. A propulsion system for a watercraft comprising an outboard drive, the outboard drive having a propulsion device that propels the watercraft, the propulsion device being selectively operable at least in a forward or reverse mode, an internal combustion engine that powers the propulsion device, the engine defining a combustion chamber, an intake device configured to deliver air to the combustion chamber, a throttle valve configured to regulate an amount of the air, a control device configured to set the propulsion device in the forward or reverse position and to set the throttle valve to a desired position, and a operating unit configured to provide the control device with the forward or reverse mode and the desired position, the control device being configured to determine whether an abnormal state occurs in setting the throttle valve to the desired position, the control device also being configured to determine whether the operating unit provides the control device with the reverse mode, the control device further being configured to decrease an engine speed of the engine when the control device determines that the abnormal state occurs and that the operating unit provides the control device with the reverse mode.