| 摘要 |
<p>The fuel injection system for internal combustion engines comprises at least one hydraulically actuated intensifier-injector with inlet (13) and outlet (14) cavities for actuating fluid, one or more interconnected manifolds [rail(s)&rsqb (8); with at least one medium pressure pump (5), check valves (8, 9), coarse and fine purification filters (2, 4), a primary pump (3), a sump or tank (1), and electronic control unit (21) and a piping system. The exhaust actuating fluid (19) is fed to the medium pressure pump (5). A cooler (20) is installed between the exhaust of the injector (19) and the inlet (6) of medium pressure pump (5). The system allows driving the medium pressure pump(s) either from the engine crankshaft/camshaft, or autonomously by an electric motor, or by a secondary internal combustion engine. In the two latter cases, the common rail pressure, and respectively the injection pressure, is controlled by modifying the speed of the electric motor or of the secondary internal combustion engine.</p> |
