| 摘要 |
PURPOSE:To reduce an amount of lubricating oil consumed through prevention of feed of surplus lubricating oil to the interior of a control chamber, by a method wherein, when feed of fuel is limited during deceleration, an amount of lubricating oil fed, simultaneously, is decreased. CONSTITUTION:During operation of an engine, in a control circuit 24, a basic injection amount deciding circuit 31 computes an optimum amount of fuel injected from output signals S1 and S2 from an air flow sensor 26 and a sensor 27 for the number of revolutions of an engine, respectively, and an ejector 4 is controlled through an injector driving circuit 32 according to said computed amount. In which case, output signals S3 and S4 from a cooling water temperature sensor 28 and a throttle valve opening switch 29, respectively, are further inputted to the control circuit 24. When the signals S2 and S3 exceed reference voltages V1 and V2, respectively, a throttle valve is fully closed to generate the signal S4, and the output of an AND gate 35 attains 1, an amount of lubricating oil fed is reduced through closing of control valves 11a and 13a through the working of a solenoid valve driving circuit 36.
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