Fuel injection pump for internal combustion engines

Details Fuel injection pump for internal combustion engines Fuel injection pump for internal combustion engines

1992-11-12

1993-08-10

Cross, E. Rollins

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

123500, 123503, F02B 300

Patent

active

052339556

ABSTRACT:
A fuel injection pump for internal combustion engines, having a pump piston that reciprocates in a cylinder liner inserted into a pump housing. The pump piston and housing encloses a pump work chamber, and the pump piston has a control recess on its jacket face that communicates with the pump work chamber through a conduit. An oblique groove extends at a predetermined angle from the axis of the pump piston in the jacket face thereof and forms control edges. An annular slide is axially displaceable on the pump piston and includes two diametrically opposed diversion bores. To interrupt the high-pressure pumping to provide a pre-injection quantity and a main-injection quantity, first, second and third pockets are additionally machined into the jacket face of the pump piston. These pockets cooperated with pockets machined in the annular slide and with the control edge formed by the lower face edge of the annular slide to control the fuel flow.

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patent: 4649883 (1987-03-01), Bohringer et al.
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patent: 4870936 (1989-10-01), Eheim et al.
patent: 5097812 (1992-03-01), Augustin
patent: 5168847 (1992-12-01), Grieshaber et al.

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