Patent ID: 8713935
Filing Date: 2014-05-06
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. A method of controlling a natural gas engine system having a turbo charger having a compressor and a turbine connected to said natural gas engine; a turbine wastegate valve; an oxygen sensor associated with said natural gas engine to sense a quantity of oxygen in exhaust gas discharged from said natural gas engine; an air/fuel throttle valve; a fuel valve positioned upstream of said air/fuel throttle valve; a position sensor to sense the position of said air/fuel throttle valve; and a PID controller; said method comprising: sensing an air/fuel throttle valve position; comparing said position signal with a predetermined user set point via said PID controller; actuating said waste gate valve in response to an output signal as a result of said comparing said position signal with a predetermined user set point to regulate compressed air pressure in an intake duct.