ES383754A1 - Improvements in the construction of fuel injection pumps, for engines. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in the construction of fuel injection pumps for internal combustión engines, of the type used with variation of the fuel flow driven depending on the number of revolutions due to interruption of the supply of the pump, at least when reaching the number of revolutions maximum, due to the opening of a first discharge channel of the working chamber of the pump, during the flow path of the pump piston, by a regulating member, which moves back and forth, which, by the pressurized liquid of an auxiliary pump driven synchronously with the main pump is driven in the forward direction and during its recoil, produced by a restoring force, it is braked because it has to force at least a part of the liquid, which caused the flow, through of a regulating throttle, so that the regulating member with a certain throttle section and when reaching a number d e determined speed, due to the presence of a so-called liquid stop, no longer goes back to its starting position against a fixed stop, the working area of the main pump having a second discharge channel that is governed by the regulating member and by a piston slide which works synchronously with the main pump and the auxiliary pump, characterized in that the second discharge channel is opened by the regulation member before the first discharge channel, and because the second discharge channel is closed before the liquid stop is presented by the plunger slide before it opens by the regulating member and, after the liquid stop is presented, with its increase in increasing scale it is opened by the regulating member before it closes by the piston slide. (Machine-translation by Google Translate, not legally binding)