| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas engine integral control method and a device capable of stable control even with a fuel gas having unstable calorific value, by improving load responsiveness, while maintaining highly accurate air-fuel ratio control. SOLUTION: This device has a speed control process of setting a fuel gas flow rate of a fuel flow control valve in response to a fuel gas flow rate command value by arithmetically operating the fuel gas flow rate command value based on a deviation between an engine speed signal and a speed command value signal being its target value, and an air-fuel ratio control process of performing feedback control for setting target opening of a throttle valve based on a deviation between an air-fuel mixture flow rate command value and an actual air-fuel mixture flow rate by calculating the air-fuel mixture flow rate command value being the proper air-fuel ratio to the fuel gas flow rate command value arithmetically operated by the speed control process, and corrects the target opening of the throttle valve based on a deviation between the actual exhaust temperature detected from exhaust gas and the target exhaust temperature set based on an engine speed in the speed control process. COPYRIGHT: (C)2009,JPO&INPIT
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