초록 ▼

A method for controlling the air-fuel ratio in a natural gas engine having an air-fuel mixing device, comprises: determining a speed set-point and an actual engine speed, determining a fuel command based on said speed set-point and said engine speed and controlling the fuel flow to the air-fuel mixi

A method for controlling the air-fuel ratio in a natural gas engine having an air-fuel mixing device, comprises: determining a speed set-point and an actual engine speed, determining a fuel command based on said speed set-point and said engine speed and controlling the fuel flow to the air-fuel mixing device in response to said fuel command. An air-fuel control system for natural gas engines, comprises: means to determine a speed set-point and an actual engine speed, a governor control unit for generating a fuel command based on said speed set-point and said actual engine speed and a fuel flow regulator coupled to said governor control unit for regulating the flow of fuel to an air-fuel mixing device in response to said fuel command.

대표청구항 ▼

1. An air-fuel control system for a natural gas engine provided with an air-fuel mixing device, comprising:means for establishing a speed set point; means for determining an actual engine speed; a governor control unit for generating a fuel command based on said speed set-point and said actual engin

1. An air-fuel control system for a natural gas engine provided with an air-fuel mixing device, comprising:means for establishing a speed set point; means for determining an actual engine speed; a governor control unit for generating a fuel command based on said speed set-point and said actual engine speed; a fuel flow regulator coupled to said governor control unit for regulating the flow of fuel to the air-fuel mixing device in response to said fuel command to produce an air-fuel mixture; and air-fuel flow control means for regulating the flow of said air-fuel mixture from said air-fuel mixing device to an intake manifold of said engine.