| 摘要 |
The invention relates to a pressure booster for delivering Diesel fuel to an injection nozzle. A piston (4) movable in a steeped cylinder space divides the cylinder space in at least three chambers (1, 2, 3), confined respectively by at least three piston faces (5, 6, 7) having unequal surface areas. The largest and smallest piston surfaces (5, 7) are facing in the same direction and the chambers confined thereby are respectively in communication with a control pressure line (11) and with an injection nozzle. The second largest piston surface (6) faces in the opposite direction and a cylinder chamber (2) confined thereby is in communication with a pressure line (12). A fuel delivery line (13) is connected through a one-way valve (9) with a line leading to an injection nozzle. The reciprocating motion of piston (4) is produced by switching the control pressure on and off. |
