Pumps – Expansible chamber type – Pumping member position controlled port
Patent
1984-09-19
1985-07-09
Smith, Leonard E.
Pumps
Expansible chamber type
Pumping member position controlled port
417490, 123509, F02M 5948
Patent
active
045279624
ABSTRACT:
The housing, which is closed at the side, of the fuel injection pump embodied as in-line injection pump has receiving bores, discharging into a camshaft chamber, for in-line tappets and pump elements, the pump pistons of which are rotatable in order to vary the effective supply stroke by means of regulating sleeves provided with guide arms. A governor rod guided in a longitudinal recess of the pump housing engages the guide arms. For the removal and installation of the regulating sleeves, assembly recesses are machined into the receiving bores, beginning at the camshaft chamber and discharging into the longitudinal recess. The assembly recesses, one for each two adjacent receiving bores, are each embodied by means of a single aperture which interrupts the web of housing between the receiving bores. The resultant assembly recesses are located in the unloaded region between the tappets and enable an equally high peak load on the injection pump in both clockwise and counterclockwise operation.
REFERENCES:
patent: 2482733 (1949-09-01), Johansson
patent: 3667437 (1972-06-01), Dreisin
Greigg Edwin E.
Robert & Bosch GmbH
Smith Leonard E.
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