| 摘要 |
PURPOSE:To always secure the sufficient efficiency of a heating apparatus by reducing a partial-cylinder operation range, when the heating apparatus in a controlled cylinder-number engine is in operation. CONSTITUTION:A fuel injection controlling circuit 13 receives each signal supplied from an air flow sensor 7 and an engine revolution-number sensor 12 and outputs each injection pulse supplied into each fuel injection valve 11a-11d. A cylinder-number controlling circuit receives each signal supplied from an intake negative-pressure sensor 15 and a water-temperature sensor 16 and compares said signal value with each set value and outputs a partial-cylinder operation signal S10 through an AND circuit 24, in a specific operation range. When the signal supplied from a heater operation sensor 17 is input and a heater is in operation, a set-value changing circuit changes the set value in a set-signal generation circuit 23 (for example, the lower limit value of water-temperature in a partial-cylinder operation range is raised up), and the partial-cylinder operation range is reduced, and thus sufficient heat is supplied into the heater. |
