| 摘要 |
PURPOSE:To make a proper amount of fuel conformed to an intake air quantity distributively feedable to each cylinder uniformly with a simple structure by spraying the fuel regulated by venturi negative pressure being generated in response to the intake air quantity in succession from an injector. CONSTITUTION:Negative pressure being generated in a venturi 4 in response to an intake air quantity is led into a fuel controller 13 and amplified by an effective area difference in each of diaphragms 15, 17, 19. With this, fuel regulated to proper fuel pressure according to the intake air quantity is continuously sprayed out of an injector 9 set up in an intake manifold connected to each cylinder. Then, the same pressure fuel is led into a pressure chamber 20 of the fuel controller 13 and a back pressure chamber 29 of a fuel pressure compensating mechanism 27, and discharge pressure of the fuel controller 13 is intensified, extruding fuel vapor, and any fuel pressure variation due to this fuel vapor is prevented from occurring. Simultaneously an upped portion of fuel pressure is offset in the fuel pressure compensating mechanism 27 whereby it is compensated to the fuel pressure conformed to intrinsic venturi negative pressure. With this constitution, a proper amount of fuel conformed to the intake air quantity is distributively feedable to each cylinder in a uniform manner. |
