COMBUSTOR

摘要

PURPOSE:To invariably maintain the air/fuel ratio at the optimum value regardless of changes in the back pressure of a pressure control valve by controlling the ratio with the correction of the action of the pressure control valve or a combustion level control section based on signals from a back pressure detector. CONSTITUTION:A pressure control valve 5 for controlling the return pressure interlocks a combustion level control 15 electrically to control the air/fuel ratio. Deviation of the air/fuel ratio caused by changes in the performance characteristic of the pressure control valve attributed to variations in the back pressure thereof 5 is corrected based on back pressure signals detected with a back pressure detector 17. This always enables the air/fuel ratio to be maintained at the optimum value regardless of changes in the back pressure of the pressure control valve 5.