Patent ID: 6478643
Filing Date: 2002-11-12
Classification: B63H,F01P

Abstract:
A marine engine for driving a watercraft, comprising:an engine body having a water inlet line for providing a flow of water to said engine body; a water pump mounted along said water inlet line and having a drive shaft connected by a drive belt to a drive shaft for the engine such that said water pump is driven by the engine for pumping the flow of water along said water inlet line to said engine body; and a pressure and volume flow regulator positioned along said water inlet line for receiving excess water from said water inlet line as pressure in said water inlet line exceeds a desired control pressure for maintaining the pressure in the water flow at a predetermined level, said regulator including: a regulator body defining a flow path therethrough; and a piston mounted along said regulator body and moveable between a closed position and an open position exposing said flow path in response to the pressure of the water flow exceeding the desired control pressure to enable excess water to be directed away from said engine body and maintain the pressure of the water flow through the engine body at the predetermined level.