Internal-combustion engines – Miscellaneous – Fuels – lubricants and additives
Patent
1983-11-14
1985-02-19
Cross, E. Rollins
Internal-combustion engines
Miscellaneous
Fuels, lubricants and additives
123299, 123304, 123305, 123576, 23953312, F02B 7512, F02B 2306
Patent
active
044998627
ABSTRACT:
The injection device has a nozzle body (10) wherein the liquid-controlled edle 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 p.sub.o, 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 p.sub.o 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.
REFERENCES:
patent: 4370958 (1983-02-01), Pischinger
patent: 4399786 (1983-08-01), Holmer
patent: 4401071 (1983-08-01), Zurner
Baumer Klaus
Wiegand Herbert
Cross E. Rollins
Deutsche Forschungs -und Versuchsanstalt fur Luft -und Raumfahrt
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