PURPOSE: To prevent the engine load from becoming too high at the time when the supercharging pressure is raised rapidly, by providing a means for detecting pressure in an intake passage, and stopping injection of fuel when the pressure detected by said means becomes higher than a prescribed positive pressure.
CONSTITUTION: Air drawn from an air cleaner 1 is pressurized by a compressor 5 of a turbocharger 3 and then supplied from an intake passage 6 to a cylinder 9 via a throttle valve 7 and an intake manifold 8. In such an apparatus, a switch 7A for detecting the state that the throttle valve 7 is fully closed is turned ON when the suction vacuum is increased at the time of decelerating an engine by closing the throttle valve 7, and output of a fuel injection signal to an injector 10 is stopped by a control means 12. Similarly, a pressure switch 24 is turned ON when the supercharging pressure is increased extraordinarily and pressure in the intake manifold 8 has become higher than a prescribed value, and fuel supply is stopped by the control means 12. With such as arrangement, it is enabled to prevent overload of an engine.
MORITA TATSUROU
MIWAKEICHI HIROSHI
TAKIZAWA SATORU
YAMAGUCHI HIROSHI
| JPS56135723A | 1981-10-23 |