Patent ID: 6082335
Filing Date: 2000-07-04
Classification: F02M

Abstract:
A fuel injection-pump for injection in combustion machines with a pump piston (1), which is disposed axially and rotatably movable in a pump cylinder (13) with at least one intake port (14) for fuel and is provided with a runback slot (16), which is in communication with a stop slot (5) for interruption of fuel delivery, mounted on the pump piston (1) parallel to the longitudinal axis of the piston, and with a geometric connection in the region of the circumferential edge between the top end face and the shell surface (3) of the pump piston (1), wherein there is provided, in order to exert a hydrodynamic influence on control of the beginning of injection, a narrow transverse slit (7) spaced from the leading edge (8) and at one end discharging into the stop slot (5) of the pump piston (1), wherein a narrow longitudinal slit (2) running parallel to the pump-piston axis and cut into the circumferential edge is provided, and the narrow transverse slit is disposed between the stop slot (5) and the narrow longitudinal slit (2).