Penetration distance-composited alcohol spraying method and device

A technology of nozzles and mounting holes, which is applied in the field of alcohol spraying methods and devices with combined penetration distances, can solve the problems of affecting the utilization rate of methanol fuel, reducing the service life of alcohol sprayers, and not being able to atomize well, so as to alleviate the thermal load. Equilibrium phenomenon, promoting the evaporation of methanol liquid film, and improving the effect of fuel atomization

Inactive Publication Date: 2013-03-06
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method is to arrange the methanol nozzle in the direction perpendicular to the intake pipe and the air flow. Due to the long penetration distance of the low pressure nozzle, a large amount of methanol is sprayed onto the wall of the intake pipe and reflected, so that the methanol cannot be easily mixed with the air in the form of liquid mist. Good mixing will affect the utilization rate of methanol fuel, and the reflected methanol droplets will enter the seal between the nozzle and the alcohol injector, which will easily swell the sealing rubber ring of the nozzle and reduce the service life of the alcohol injector; or the alcohol injector It forms a certain angle with the air pipe and sprays into the air pipe along the air flow. The methanol liquid column flows into the cylinder at high speed after the pressurization, which cannot be atomized well and leads to uneven methanol volume entering each cylinder.

Method used

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  • Penetration distance-composited alcohol spraying method and device
  • Penetration distance-composited alcohol spraying method and device
  • Penetration distance-composited alcohol spraying method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Combined penetrating alcohol spray device, including:

[0048] The intake manifold extension pipe 11 is coaxial with the intake manifold; the intake pipe extension pipe 9 intersects the intake manifold extension pipe 9 and the intake manifold extension pipe 11 at right angles; the connecting elbow 10 connects the intake pipe extension Pipe 9 and intake manifold extension pipe 11; the plane formed between the intake manifold extension pipe 9, the connecting elbow 10, and the centerline of the intake pipe extension pipe 11 is defined as the first plane;

[0049] The first baffle 12 is perpendicular to the centerline of the intake manifold extension pipe and is connected to the outer peripheral surface of the elbow by welding; the second baffle 13 is perpendicular to the first plane; the first baffle 12 and the second baffle 13 The angle between them is 120 degrees;

[0050] control Figure 5 , 6 , three nozzle installation holes 14a, 14b, 14c installed vertically on th...

Embodiment 2

[0054] control Figure 8-12, the difference between this embodiment and the embodiment is that the intake manifold extension pipe 11, the connecting elbow 10 and the intake pipe extension pipe are integrally formed, there is no design of the first baffle plate and the second baffle plate, and the nozzle directly passes through the Drill holes at the connecting elbow for installation. Other parts are identical with embodiment 1.

Embodiment 3

[0056] control Figure 13 , 14 , 15, illustrate the implementation scheme of this embodiment. The difference between this scheme and Embodiment 2 is that this embodiment is mainly designed for the intake manifold and intake pipe structure of engineering machinery; when casting, the boss 22 on which the nozzle is installed is cast in advance, and then the nozzle is cast on it. hole to mount the nozzle holder. Other parts are identical with embodiment 2.

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Abstract

The invention relates to methyl alcohol spraying method and a device in mixed combustion of diesel oil and alcohol, and in particular relates to a penetration distance-composited alcohol spraying method and device, which speed up the evaporation and gasification of methyl alcohol drops and improves the uniformity of the mixtures of methyl alcohol and air which enter cylinders. The invention adopts the following technical scheme that an elbow is arranged at the joint of an intake manifold and an intake pipe of an engine; two or more spray nozzles with different penetration distances for spraying alcohol are installed at the elbow; center lines of the spray orifices of the spray nozzles are parallel to the axis of the intake manifold or incline downward with respect to the axis of the intake manifold. The alcohol spraying method and the device realize at least two alcohol spraying penetration distances and enable the alcohol to land at different parts of the intake manifold of the engine after being sprayed out from the spray nozzles. The multi-penetration-distance alcohol spraying device enables the alcohol liquid to reach different parts of the intake manifold of the engine, reduces the thermal load of the engine, and reduces the waste heat brought away by the cooling water of the engine.

Description

Technical field: [0001] The invention relates to a methanol injection method and device for mixed combustion of diesel oil and alcohol, and further relates to an alcohol injection method and device with a combined penetration distance. Background technique: [0002] A diesel / methanol combined combustion engine has been disclosed in Patent Document 1 (CN1470752A). It can greatly reduce NOx and particulate emissions of diesel engines at the same time, and can also significantly improve the effective thermal efficiency of diesel engines. The diesel / methanol combined combustion engine arranges a methanol nozzle on the engine intake pipe, methanol is sprayed in the form of liquid mist and mixed with the intake air to form a homogeneous mixture that enters the cylinder, and is ignited and burned by diesel. The traditional method is to arrange the methanol nozzle in the direction perpendicular to the intake pipe and the air flow. Due to the long penetration distance of the low pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/14F02M35/104
CPCY02T10/16Y02T10/12
Inventor 姚春德王全刚姚安仁魏立江刘军恒
Owner TIANJIN UNIV
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