| 摘要 |
PURPOSE:To enable the proper reduction in NOx, by a method wherein, as a fuel injection amount increases, a diesel engine equipped with a fuel injection pump is reduced in its exhaust gas amount in a recycling path. CONSTITUTION:Suction and exhaust pipes 5 and 6 of an engine E are connected to a recycling path 7, and a valve body 8, which is opened and closed by means of a diaphragm device 3, is located at the side of the suction pipe 6. A spill ring 102 which is moved by means of a rotating and reciprocating plunger 101 and a control lever 104 mounted on an outer circumference of the plunger 101 is located at a fuel injection pump 1. A rod 204 which is connected to a diaphragm 201 of a pressure regulator 2 is secured on the lever 104, and opens and closes a valve body 210. A suction negative pressure fed to a chamber 207 by a valve body 210 is led to a negative pressure chamber 306 of the device 3 through a negative pressure pipe 4, and controls the opening angle of the valve body 8. |
