초록 ▼

The injection device has a nozzle body (10) wherein the liquid-controlled needle valves (17; 18) are opened by the diesel fuel supplied by an injection pump via the annular line (12) and the pressure channels (13; 14) when the opening pressure po, which is set at the pressure springs (19; 20) by way

The injection device has a nozzle body (10) wherein the liquid-controlled needle valves (17; 18) are opened by the diesel fuel supplied by an injection pump via the annular line (12) and the pressure channels (13; 14) when the opening pressure po, which is set at the pressure springs (19; 20) by way of the pressure adjusting discs (21; 22), is reached. In this connection the two needle valves (17; 18) can be opened and closed at different times within certain limits so that at a relatively low opening pressure po for the needle valve (17) relative to the needle valve (18) the diesel fuel issuing through the spray aperture (24) into the combustion chamber (25) serves during the entire injection period as ignition jet for the alcohol fuel issuing from one or more spray apertures (29). The alcohol fuel, which is supplied continuously by a gear pump, flows from the pressure channel (26) to the collecting chamber (27) from where, interrupted by the liquid-controlled needle valve (18), it is injected intermittently via the blind hole (28) and the spray aperture(s) (29) into the combustion chamber (25). Due to the intake of air in the narrowest cross section of the spray apertures (24; 29), diesel and alcohol fuel arrive at the combustion chamber (15) already as two-phase mixture.

대표청구항 ▼

In an injection device for direct injection diesel enginer using an injection ppump, wherein at the end of the compression stroke diesel fuel is injected from a spray aperture and alcohol fuel is injected from one or more spray apertures into the combustion chamber, the improvement comprising: means

In an injection device for direct injection diesel enginer using an injection ppump, wherein at the end of the compression stroke diesel fuel is injected from a spray aperture and alcohol fuel is injected from one or more spray apertures into the combustion chamber, the improvement comprising: means for injecting the diesel fuel, which has good ignition qualities, chronologically before and chronologically after the start and end of injection for the alcohol fuel, which does not have good ignition qualities, so that during the entire injection process the diesel fuel is available as an ignition aid for the alcohol fuel.