Method and system for improved fuel system performance of a gaseous fuel engine

A method for improving the supply of gaseous fuel to a gaseous fuel engine, comprising the steps of:

• receiving and using in a gaseous fuel engine a gaseous fuel at a controlled supply pressure;
• storing said gaseous fuel at a storage pressure in a fuel storage device;
• receiving said gaseous fuel from said fuel storage device and variably reducing the pressure of said gaseous fuel from said storage pressure to said controlled supply pressure using a fuel pressure regulator;
• controlling said fuel pressure regulator in response to signal inputs corresponding to said controlled supply pressure;
• and
• generating said signal inputs in response to sensed parameters associated with said gaseous fuel.

An improved gaseous fuel metering system for a gaseous fuel engine, comprising:

• a fuel storage device for storing a gaseous fuel at a storage pressure;
• a fuel pressure regulator for receiving said gaseous fuel from said fuel storage device and dynamically reducing the pressure of said gaseous fuel from said storage pressure to a control supply pressure;
• at least one sensing means for generating an input signal in response to at least one sensed parameter associated with flow rate of said gaseous fuel;
• and
• controlling means for controlling said fuel pressure regulator in response to said signal input for dynamically determining and controlling the value of said control supply pressure and, thereby, controlling the flow rate of said gaseous fuel.