CN202144769U

CN202144769U - Favorable current alcohol spray device arranged in diesel engine configuration alcohol spray system circumferentially

Info

Publication number: CN202144769U
Application number: CN201120200066U
Authority: CN
Inventors: 姚春德; 魏立江; 刘军恒; 姚安仁; 徐元利
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-02-15
Anticipated expiration: 2021-06-15

Abstract

The utility model discloses a circumferentially arranged alcohol sprayer in an alcohol spray system configured with a diesel engine. The downstream alcohol injector is arranged on the intake pipe between the air intercooler and the engine, and is composed of an intake connecting pipe, a nozzle and an alcohol rail. A boss is arranged in the circumferential direction of the outer circle of the intake connecting pipe, and an alcohol spray hole is set at a certain angle with the airflow direction on the boss, and a nozzle is inserted into the alcohol spray hole, and the other end of the nozzle is connected with the alcohol rail. The utility model has the advantages of improving the atomization quality of alcohol liquid and air, improving combustion, increasing the substitution ratio of alcohol to diesel oil, reducing the substitution ratio of alcohol to diesel oil, and greatly reducing emissions.

Description

The favorable current of the circumference in the pure system of diesel engine configuration spray sprays pure device

Technical field

The favorable current that the utility model relates to the circumference in the pure system of a kind of diesel engine configuration spray sprays pure device, belongs to the pure device technique of diesel engine configuration spray.

Background technique

Methyl alcohol/diesel oil combined burning motor is the patented technology (patent No.: ZL031482880), have significant effect to reducing Diesel NOx and particle emission simultaneously of University Of Tianjin.Concrete way is on the suction tude of motor, to arrange the methyl alcohol nozzle, and methyl alcohol sprays in the suction tude with the form of liquid mist and forms homogeneous charge with air mixing, gets in the cylinder by diesel oil ignited burning.Traditional way is; With the methyl alcohol arrangement of nozzles on the suction tude direction vertical with airflow direction; But because the penetration degree of methanol solution mist is much larger than the bore of suction tude; A large amount of methyl alcohol are sprayed onto on the wall of suction tude, cause methyl alcohol not carry out good mixing, thereby influence the performance of motor with the form and the air of liquid mist.

Summary of the invention

The purpose of the utility model is to provide the favorable current of the circumference in the pure system of a kind of diesel engine configuration spray to spray pure device, realizes that the spray of multiple spot favorable current is pure, and the condensation rate of alcohol is high even with air mixing, and burning is complete, and the NOx discharging is low.

The utility model realizes that through following technological scheme the favorable current of the circumference in the pure system of a kind of diesel engine configuration spray sprays pure device, the pure system of described diesel engine configuration spray; Comprise and supply pure device; The favorable current of ECU and circumference sprays pure device, wherein supplies pure device to comprise pure liquid case, the pure liquid pump in the pure liquid case; The alcohol liquid pump be exported to the output pipe that pure liquid is set between the pure liquid distributor; Pure liquid filter cleaner is set on this pipeline, the return line of pure liquid is set between downstream part to the pure liquid case of the pure liquid filter cleaner on this alcohol transportation pipe road, on this return line, pressure-limit valve is set; It is input signal that ECU is gathered engine speed, the temperature of cooling water and the electrical signal of throttle position, the electrical signal of the pure liquid emitted dose of output control; The favorable current of circumference sprays pure device and is connected with the engine charge connecting tube; It is characterized in that, air inlet connecting tube cylindrical a boss circumferentially is set, boss object gas flow end face becomes 30 ° of-60 ° of angles with the inlet pipe connection downstream direction; On this end face, offer 4 pure holes of the spray with inlet pipe connection UNICOM along circumferencial direction; Spray pure centerline hole and center line that spray pure hole vertical with this end face and be parallel to each other, spray grafting nozzle in the pure hole, the nozzle the other end goes out pure connecting tube with pure rail and is connected; The alcohol rail is that foursquare uniform section box body becomes 120 ° of angles to constitute by two cross sections, and it axially offers every box body upper edge 2 and go out alcohol mouthful.

The beneficial effect of the utility model is: improved the atomization quality of pure liquid and air, improved burning, improved the substitution rate of alcohol to diesel oil, reduced the replacement ratio of alcohol to diesel oil, reduced discharging significantly.The utility model is applied to various haulage vehicles and urban public traffic vehicles, and under the various operating modes of motor, the NOx discharging all has significantly reduction, and the average range of decrease is 30%.

Description of drawings:

Fig. 1 is the WD615.62 diesel engine structural representation of the pure system of configuration spray.

Among the figure: 1. motor, 2. ECU, 3. connect sebific duct, 4. the circumference favorable current sprays pure device assembly, 5. pressure-limit valve, 6. pure liquid filter cleaner, 7. pure liquid pump, 8. pure liquid case, 9. intake manifold, 10. catalytic converter, 11. outlet pipes.

Fig. 2 sprays pure device structural representation for the favorable current of the circumference of the utility model specific embodiment.

Fig. 3 is the right elevation of Fig. 2.

Among the figure: 4-1, methyl alcohol rail, 4-2, nozzle, 4-3, air inlet connecting tube, 4-4, O RunddichtringO, 4-5 advance the alcohol mouth.

Embodiment:

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

Accompanying drawing 1 is the WD615.62 diesel engine structural representation of the pure system of configuration spray, and wherein supply pure device to comprise: methanol tank 8, its volume are 160L; Methanol pump 7 in the methanol tank, its model is HPE025D-400, the output pipe that methyl alcohol is set between the pure device is sprayed in being exported to of methanol pump; This pipeline internal diameter is the plastic tube of 8mm; And methyl alcohol filter cleaner 6 is set on pipeline, its model is M0000156785, and the return line of methyl alcohol is set between downstream part to the methanol tank of the methyl alcohol filter cleaner 6 on this alcohol transportation pipe road; Pressure-limit valve 5 is set on this pipeline, and its pressure is 0.4MPa.Supply pure device also to comprise: to spray pure device assembly 4.Spraying pure device assembly comprises: methyl alcohol rail 4-1 is that 120 °, cross section are that the pure rail pipe that square, the length of 16mm * 16mm is 65mm constitutes by two angles, and welding is communicated with; The pure rail pipe in left side is φ 5mm apart from end face 15mm place welding one internal diameter, and external diameter is φ 8mm, and length is that alcohol mouthful 4-5 is advanced in the straight tube conduct of 40mm; Every pure rail pipe is offered 2 along its length and is gone out alcohol mouthful, and the distance between the scene 2 alcohol mouthful is 25mm, and going out the alcohol mouthful distance apart from the jointing place near two of pure rail pipe jointing place is 15mm; Each goes out the alcohol mouth and goes up welding connecting tube, and its internal diameter is φ 13.6mm, and length is 13mm; Grafting nozzle 4-2 in the connecting tube, the connection-peg external diameter of nozzle is 13.5mm, the connection-peg of nozzle is provided with O RunddichtringO and connecting tube sealing; Nozzle bore is arranged on the inlet pipe connection boss, and boss object gas flow end face becomes 60 ° of angles with the inlet pipe connection downbeam, on this end face, offers 4 pure holes of the spray with inlet pipe connection UNICOM along circumferencial direction; Spraying pure centerline hole becomes the center line in 150 ° of angles and hole to be parallel to each other with air inlet connecting tube downbeam; Spray pure hole and be made up of up big and down small two sections concentric column holes, the epimere internal diameter is φ 13.6mm, and length is 15mm; Another connection-peg of nozzle is used to peg graft; Hypomere and the conducting of inlet pipe connection inwall, internal diameter is φ 11mm, the nozzle connection-peg is provided with O RunddichtringO and the sealing of nozzle carrier hole.

This sprays pure device assembly 4 and is serially connected on the suction tude between air intercooler and the motor.

ECU 2, it gathers engine speed, and the temperature of cooling water and the electrical signal of throttle position are according to these SC sigmal control methyl alcohol emitted doses.

All the other structures of motor are identical with the conventional engines structure.

The basic parameter of former DENG sees the following form:

Model	WD615.62
		Pattern	Vertical, in upright arrangement, water-cooled, four-stroke, straight spray
Cylinder number	6
		Bore/stroke (mm * mm)	126×130
Discharge capacity (L)	9.726
		Intake method	Charge inter cooling
Nominal power/rotating speed (kW/r/min)	206/2200
		Maximum Torque/rotating speed (N.m/r/min)	1160/1100～1600
The minimum fuel oil consumption of full load (g (kwh)-1)	≤197
		Discharging	Europe II

On above-mentioned DENG, at different rotating speeds during in middle and high load running, the substitution rate of diesel oil>=35%, when low-load, the substitution rate of diesel oil>=10%, various operating mode methanol to the replacement of diesel oil than all≤1.8.

Claims

1. a kind of alcohol injection device along the flow of the circumferential arrangement in the diesel engine configuration alcohol injection system, described diesel engine configuration alcohol injection system, comprises alcohol supply device, electronic control unit and the alcohol injection device of the downstream arrangement of circumferential arrangement, wherein alcohol supply The device includes an alcohol liquid tank, an alcohol liquid pump in the alcohol liquid tank, an alcohol liquid output pipeline is set between the outlet of the alcohol liquid pump and the alcohol liquid distributor, an alcohol liquid filter is set on the pipeline, and an alcohol liquid filter is set on the pipeline An alcohol liquid return line is set between the downstream of the alcohol liquid filter of the pipeline and the alcohol liquid tank, and a pressure limiting valve is set on the return line; the electronic control unit collects the engine speed, the temperature of the cooling water and the position of the throttle The electric signal is the input signal, and the electric signal for controlling the injection amount of the alcohol liquid is output; the alcohol sprayer arranged along the circumference is connected with the engine intake connection pipe, and the feature is that a boss is arranged on the outer circumference of the intake connection pipe , the end surface of the boss facing the airflow and the airflow connecting pipe form an included angle of 30°-60° along the airflow direction, and four alcohol spray holes connected with the airflow connecting pipe are set on the end surface along the circumferential direction, and the center line of the alcohol spray hole is It is perpendicular to the end face and the center lines of the alcohol spray holes are parallel to each other. The nozzle is inserted into the alcohol spray hole, and the other end of the nozzle is connected to the alcohol rail outlet connection pipe. The included angle is formed, and two alcohol outlets are opened on each box body along its axial direction.