| 摘要 |
Hydraulically driven pump-injector for internal combustion engines primarily for diesels, wherein in order to considerably increase the pressure multiplication coefficient for achieving super-high injection pressures (2500 Bar and higher) and decreasing the pump-injector diameter or reducing the pressure of the actuating fluid, a multistage pressure intensifier is installed in the pump-injector, comprising a tandem of successive stages, each stage comprising an intermediate piston ( 3 ), above which a working cavity ( 12 ) is formed, to which the actuating fluid is expulsed by a pushrod ( 4 ) driven by the previous piston.
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