Double-sliding-sleeve rotor type fuel oil injection pump

Abstract

The invention discloses a double-sliding-sleeve rotor type fuel oil injection pump. The double-sliding-sleeve rotor type fuel oil injection pump comprises a pump body, an eccentric shaft, sliding sleeves and a plurality of sets of plunger assemblies, wherein the eccentric shaft is provided with two eccentric sections, and the two eccentric sections are distributed in the axial direction of the eccentric shaft; the eccentric sections and a rotating shaft of the eccentric shaft are eccentrically arranged; the two eccentric sections are each provided with one sliding sleeve, and each sliding sleeve corresponds to the plurality of sets of plunger assemblies; a plurality of sets of plunger assemblies corresponding to the same sliding sleeve are distributed in the circumferential direction of the sliding sleeves; and the plunger assemblies corresponding to different sliding sleeves are arranged in a staggered manner in the circumferential direction. The double-sliding-sleeve rotor type fueloil injection pump has the beneficial technical effects that the double-sliding-sleeve rotor type fuel oil injection pump is provided, according to the scheme, under the condition that the structuralsize and weight are not greatly increased, the output of the pump is doubled, and the output capacity of the pump is effectively improved.

Description

Technical field [0001] The invention relates to a common rail engine, in particular to a double sliding sleeve rotor type fuel injection pump. Background technique [0002] Rotor pump is a common oil pumping device, which is common in common rail engines. Considering the restriction conditions such as the layout space, mechanical performance and weight reduction of the engine, the existing single rotor pump usually only has one sliding sleeve. And three sets of plunger assemblies, the sliding sleeve drives the three sets of plunger assemblies to operate; the problem is that the prior art usually increases the pump oil output by increasing the number of rotor pumps, but with the number of rotor pumps The size and weight of the engine will increase correspondingly, and the layout of the components must be redesigned according to the mechanical properties of the engine, which is more troublesome. Summary of the invention [0003] In view of the problems in the background art, the pr...

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Problems solved by technology

[0002] The rotor pump is a common oil pumping device, which is commonly used in common rail engines; considering the constraints of the engine's layout space, mechanical properties, and device weight reduction, the existing single rotor pump is usually equipped with only one sliding sleeve and three sets of plunger assemblies, which are driven by the sliding sleeve; the existing problem is: the existing technology usually adopts the method of increasing the number of rotor pumps to increase the pump oil output, but with the increase in the number of rotor pumps The size and weight of the engine will also increase accordingly, and the layout of the parts must be redesigned according to the mechanical properties of the engine, which is troublesome

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