摘要:
The invention relates to an air-fuel ratio controlling method and a device for internal combustion engines, having a detector (11) for a flow rate of the air supplied into a cylinder (4), a means (7) for detecting a ratio of a flow rate of the air supplied into the cylinder (4) to that of a fuel supplied thereinto, a control means (8) for setting an air-fuel ratio to an optimum level on the basis of output signals from the air-fuel ratio detecting means (7) and air flow rate detector (11) and a means (9) for controlling the supplying of the fuel into the cylinder in accordance with an output signal from the air-fuel ratio control means. The air-fuel ratio detecting means (7) has members for detecting the light generated by a flame in the cylinder and having at least two special wavelengths. The combustion condition corresponding to an air-fuel ratio in the cylinder is detected by the light-detecting members, and a signal representative of an actual air-fuel ratio is generated on the basis of outputs therefrom.
摘要:
A fuel injection system having a fuel injector (22) disposed in a first bore (38) formed in the wall of an air intake passage of an engine. A porous tubular element (32) having a mixture passage (44) open at both its ends is received in a second bore (36) in close contact with the fuel injector (22). An air passage (34) is provided for introducing air into the mixture passage (44) through fine passages formed in the wall of the porous tubular element (32). This air will atomize the fuel (F) adhering to the inner surface of the mixture passage (44) into fine particles (B) in order to form a homogeneous mixture.