CONTROLLER FOR GAS FUEL ENGINE

摘要

PURPOSE:To maintain air/fuel ratio properly by storing the relation between the opening of gas flow adjusting valve against the opening of throttle valve and the exhaust gas temperature in the form of a table while correcting said table in accordance to the exhaust temperature to control the opening of gas flow adjusting valve. CONSTITUTION:A controller comprised of a microcomputer 6 will store the possible relation between the opening of a gas adjusting valve 9 against the opening of a throttle valve 8 and the exhaust temperature variable in gas calorie in ROM5. Then a sensor 3 will detect the opening of throttle valve to set the opening of gas flow adjusting valve 9 optimally in accordance to a table and control through feedback of sensor 4. Thereafter the exhaust temperature is detected by a sensor 31 and compared with the exhaust temperature at previous throttle valve opening, and if there is difference gas flow adjusting valve opening is controlled while correcting the table. Consequently air/fuel ratio can be set optimally in accordance to the load rate resulting in reduction of fuel consumption.