Injection pump for diesel engines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 3, 1992
Grant Date -
N/A
app pub date -
Nov 26, 1990
filing date -
Jan 30, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a fuel injection pump for diesel engines, in which at least one pump piston (5) forms a high pressure chamber (6) with a pump piston bushing (1) and is surrounded by a control sleeve (3), whereby the angle position between pump piston (5) and control sleeve (3) is variable to adjust the quantity, and whereby an axial bore hole (11) in the pump piston (5) connects the high pressure chamber (6) with a control bore hole (12) or with a groove forming a shutoff edge and a startup edge to end the injection process, which works together with a control edge (15,17) or control bore hole of the control sleeve (3), an intake and/or supply bore hole (7), separate from a discharge bore hole (9), is provided. In this way, the pump piston (5) or the control sleeve (3) has, in addition to the control bore hole (12) present, an auxiliary control bore hole (13) that is completely covered by the startup edge (15) assigned to it, sooner than or simultaneously with the control bore hole (12) and which is not released by the shutoff edge (17) before the control bore hole (12) and the control bore holes (12,13) can be connected with the discharge bore hole (9).
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