| 摘要 |
PURPOSE:To prevent the overheat of a catalytic converter and improve fuel consumption by annealing-processing the detected value of an engine load and increasing fuel amount according to the result of the comparison between the load value after annealing and the set load value corresponding to the dangerous temperature of the catalytic converter. CONSTITUTION:An internal combustion engine C equipped with a catalytic converter B in an exhaust passage A is equipped with a load-signal generating means D for generating the signal corresponding to the engine load. The output signal of said generating means D is input into an annealing treatment means E, and annealing treatment is carried-out for the detected load value in order to obtain the load value approximate to the variation through time of the temperature rise of the catalytic converter B, accompanied by the increase of the engine load from the detected load value. The load value after annealing treatment by the annealing processing means E and the value which is a predetermined set- load value and corresponds to the allowable temperature of the catalytic converter B are compared in a comparing means F, and when the load value after annealing is over a set value, a fuel-amount increasing means G is operated to increase fuel amount. |
