AUXILIARY AIR SUPPLY DEVICE FOR FUEL INJECTION TYPE INTERNAL COMBUSTION ENGINE

摘要

PURPOSE: To supply auxiliary air of a quantity coincident to the required auxiliary air quantity of an injector to the injector by duty-controlling a solenoid valve by a control part when an internal combustion engine satisfies a determined operating state by the detection signal from a sensor. ;CONSTITUTION: A sensor group for detecting the operating state of an internal combustion engine 2 is provided, and a throttle valve 24 is provided in an intake passage 20 on the upper stream side from an injector 32. An auxiliary air supply passage 34 for connecting the intake passage 20 on the upper stream side from the throttle valve 24 to the injector 32 is provided, and a solenoid valve 36 is provided in the course of the auxiliary air supply passage 34. Further, a control part 38 is provided, which duty-controls the solenoid valve 36 to supply auxiliary air to the injector when the internal combustion engine 2 satisfies a determined operating state by the detection signal from at least a temperature sensor of the sensor groups. Thus, the auxiliary air of the quantity coincident to the auxiliary air quantity required by the injector 32 can be supplied.;COPYRIGHT: (C)1993,JPO&Japio