METHOD FOR CONTROLLING ANTI-SURGE USING WASTE GATE VALVE OF CNG ENGINE

摘要

The present disclosure discloses an anti-surge control method by utilizing a waste gate valve of the compressed natural gas (CNG) engine. The disclosed anti-surge control method by utilizing a waste gate valve of the CNG engine is characterized that the method includes (a) a step of operating an engine under supercharging control mode and under normal driving condition; (b) a step of determining whether an accelerator pedal value is equal to or less than a control setting value; (c) a step of determining whether it is fuel cut-off mode when the accelerator pedal value is equal to or less than a control setting value in the step (b); and (d) a step of executing anti-surge mode by utilizing the waste gate valve. [Reference numerals] (110) Normal driving (supercharging control mode); (120) Is an accelerator pedal value equal to or less than the control setting value?; (130) Fuel cut-off mode?; (140) Execute the anti-surging control mode (Opens as much as the setting for an opening amount); (150) Is the setting time for operating the anti-surging control satisfied ?; (160) Release the anti-surging control mode; (AA,CC,EE) NO; (BB,DD,FF) YES