CN1084434C

CN1084434C - Engine fuel supply device

Info

Publication number: CN1084434C
Application number: CN97125857A
Authority: CN
Inventors: 黄诗炎
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-26
Filing date: 1997-12-26
Publication date: 2002-05-08
Anticipated expiration: 2017-12-26
Also published as: CN1224111A

Abstract

The present invention relates to an engine fuel supply device, particularly to a device utilizing the catalytic cracking of fuel to enhance the utilization rate of engine fuel and reduce exhaust emission. The device comprises a fuel output part (1), a catalyzing part (2), an air intake part (3) and a gas mixture chamber (4), wherein the catalyzing part is provided with a casing (21), a catalyzing stack (22) made of catalyzing materials is sealed in the casing, and an engine residual heat recovering part (5) is also arranged outside the casing; the air intake part is a cavity (31) with both open ends, and an air door (32) for changing air intake area is arranged between openings of the cavity. The downstream of the air door is provided with an air throttle (33), and the air door and the air throttle are synchronously regulated by a mechanism (34) proportionally. A fuel nozzle is positioned on an airflow channel which is formed when the air door is opened.

Description

Engine fuel supply device

Technical field

The present invention relates to a kind of engine fuel supply device, particularly a kind of catalytic pyrolysis that utilizes fuel oil improves the car combustion engine fuel utilization ratio and reduces the device of toxic emission.

Background technique

Car combustion engine because of easily startup, speed height, light and flexible, bunkering convenient transportation, vehicle distance is long, cost is low etc., and characteristics become the irreplaceable device of all kinds of automobiles.But the internal-combustion engine that current automobile uses also exists the problem of two aspects, and the first thermal efficiency is low, specific fuel consumption is bigger, being taken away by waste gas and cooling medium more than 60% of fuel value, and compression ratio is lower, the adiabatic index of mixed gas is less; It two is that carbon monoxide in the exhaust gas discharged, hydrocarbon, oxynitrides content are higher, and contaminated air causes public hazards.

In order to address the above problem, thereby the fuel that makes internal-combustion engine is fully burned and improves the thermal efficiency and reduce exhaust gas discharged significantly, Chinese patent application 93114929 has proposed engine fuel supply device, it adopts independent fuel controller so that air fuel ratio remains at optimum value, make fuel molecule generating gasification and cracking when entering the catalysis heap, to guarantee the abundant burning of fuel.

Above-mentioned design has proposed the tempting prospect of internal combustion engine thermal efficiency, but through repetition test, thinks 93114929 combustion method and device still to have many needs to make the significant improvement part.Mainly be:

(1) in catalysis device, adopts not only dangerous but also consume electric power of heated by electrodes, also wasted the used heat that distributes in the car combustion engine running.

(2) lack the synchronizing controls of air input and mixed gas input, can't regulate accurately, also can't when operating conditions changes, regulate oil-gas ratio neatly fuel and air mixing ratio.

Summary of the invention

Main purpose of the present invention provides a kind of engine fuel supply device, and this device carries out catalytic pyrolysis to fuel, can also regulate air input and mixed gas input simultaneously, and this bidirectional modulation can accurately be regulated the proportions of ingredients of air and fuel.

Another object of the present invention provides a kind of engine fuel supply device, and this device heats the catalysis heap with engine exhaust heat, to strengthen catalytic effect.

For achieving the above object, the invention provides a kind of engine fuel supply device, this device comprises fuel output, catalysed partial, induction part and mixed air vessel.Described catalysed partial has a housing, have fuel inlet and fuel outlet on the housing, wherein fuel inlet is communicated with a fuel control valve, and fuel outlet then links to each other with fuel nozzle, and the catalysis heap of being made by catalysis material is closed in the described housing; Described induction part is the cavity of a both ends open, the one end opening links to each other with air-strainer, the other end opening then communicates with mixed air vessel, be provided with the air door that is used to change the air inlet area between the described opening in the cavity, then be provided with closure in the downstream of air door and near opening, air door and closure can be by mechanism synchronization regulation in proportion, when described fuel nozzle is positioned at described door opening on the formed air-flow path.

The present invention also provides a kind of fuel supplying device, and wherein said catalysis material is with SiO ₂, Al ₂O ₃Or SiC etc. applies platinum, palladium, K on the material of carrier ₂O, Cr ₂O ₃, ThO ₂Fire and form Deng catalyzer, the catalysis heap is made described catalysis material sheet, is had the laminated construction of hole or porous clava to form.

The present invention provides a kind of fuel supplying device again, and this device also has an engine exhaust heat recovery section, and this part is surrounded the housing of described catalysed partial, to utilize the engine exhaust heat heatable catalytic heap that reclaims.In addition, this heat recovery partly can be the heat recovery container of box or tubular type, and the entrance point of this container is connected with waste pipe and/or water return pipe to be cooled.

The present invention provides a kind of fuel supplying device in addition, wherein is provided with in the cavity of described induction part along airflow direction and the aeroscopic plate parallel with air door.

In fuel supplying device of the present invention, described air door can be one or a pair of.

In fuel supplying device of the present invention, also be provided with a starting fuel nozzle.

The present invention has following characteristics: owing to adopted the catalysis stack device, can improve the combustion efficiency of fuel; Adopted the synchronization regulation of air input and mixed gas input, can be accurately according to power of IC engine and rotational speed regulation fuel and air mixing ratio, after being mixed in desirable ratio, amount of fuel and air input enter combusted cylinder, guarantee the conformity of air rate internal-combustion engine is from idling to the high speed operation overall process, again can be along with air rate is regulated in the variation of condition neatly; And waste heat recovering device reclaims waste gas heat and hydro-thermal to be cooled that motor is discharged, further for the catalysis heap provides fuel-pyrolysis to react needed activation energy, realizes the improvement of fuel performance with assurance again, thereby has improved the utilization ratio of fuel.

Description of drawings

Fig. 1 is an apparatus structure schematic representation of the present invention;

Fig. 2 is the structural representation of catalysed partial of the present invention;

Fig. 3 is the schematic representation of catalysed partial of the present invention and heat recovery part;

Fig. 4 is the structural representation of induction part of the present invention.

Label declaration:

1 output

2 catalysed partials, 21 housings, 211 fuel inlets, 212 fuel outlets, 22 catalysis heap

3 induction part, 31 cavitys, 311 openings, 312 openings, 32 air doors

33 closures, 34 mechanisms, 35 aeroscopic plates

4 mixed air vessel, 5 heat recovery parts, 51 heat recovery containers, 511 entrance points

Embodiment

In illustrated embodiment, engine fuel supply device of the present invention is a kind of car combustion engine fuel oil supply device that is used for.This device comprises fuel output 1, catalysed partial 2, induction part 3 and mixed air vessel 4 as shown in Figure 1.

The structure of catalysed partial 2 can see Fig. 2 for details, and it has a housing 21, has fuel inlet 211 and fuel outlet 212 on the housing 21.Fuel inlet 211 and fuel output 1 is communicated with: 212 of fuel outlets link to each other with fuel nozzle 12.The catalysis heap of being made by catalysis material 22 is closed in the described housing 21.Used in the present invention catalysis material can be with SiO ₂, Al ₂O ₃Or SiC etc. applies platinum, palladium, K on the material of carrier ₂O, Cr ₂O ₃, ThO ₂Fire and form Deng catalyzer, catalysis material also can adopt other material that is suitable for certainly.Catalysis heap 22 is made described catalysis material sheet, the laminated construction of hole is arranged, or catalysis material is made the porous clava.

As shown in Figure 3, be further to strengthen catalytic effect in the present invention, also can the housing 21 of catalysed partial 2 outside, heat recovery part 5 be set, the housing of catalysed partial is wrapped up, pile 22 to utilize the afterheat of IC engine heatable catalytic that reclaims.The heat recovery container 51 of described heat recovery part 5 can adopt case structure shown in Figure 3, also can adopt tubular type, or other suitable structure.The entrance point 511 of this container can be connected with waste pipe or water return pipe to be cooled, certainly this container also can be simultaneously with waste pipe with wait upon CWR and link to each other, with the recovery utilization rate of reinforcement waste heat.

Fig. 4 is the structural representation of induction part of the present invention.As shown in the figure, induction part 3 comprises a cavity 311, and the two ends of cavity are provided with opening, and one end opening 311 links to each other with the air-strainer (not shown), and the other end opening 312 then communicates with mixed air vessel 4.Be provided with air door 32 between two openings 311 of this of

cavity

31 and 312, in order to change the air inlet area.Described air door 32 can adopt the structure (as shown in Figure 4) of splitting to change the air inlet area of cavity 31 with its relative opening and closing, and fuel nozzle 12 is arranged on two and splits between the air door; Also air door (not shown) of singly opening, the variation with distance between the air door cavity wall 31 relative with it changes the air inlet area, and fuel nozzle 12 can be arranged on cavity 31 walls on air door opposite at this moment.Be provided with a closure 33, the air-fuel mixture amount that enters mixed air vessel with control in the downstream of described air door 32 and near dirty body opening 312 places.Described air door 32 and closure 33 can be by a mechanism 35 synchronization regulation in proportion, and this ratio synchronous regulation mechanism can be selected for use in various known mechanisms, so do not repeat them here.

Performance when making air communication cross air door improves, in the present invention can also cavity 31 in the direction setting that aeroscopic plate 34. these aeroscopic plates should be crossed along air communication is set, and parallel with air door 32.In most preferred embodiment of the present invention, aeroscopic plate and fuel nozzle 12 are one (as shown in Figure 4).

In most preferred embodiment of the present invention, for improving the starting performance of motor, can also in the cavity 31 of induction part 3, be provided with one and also comprise a starting fuel nozzle (not shown), this starting fuel nozzle is positioned at the opposite of fuel nozzle 12, so that just start at vehicle, catalysis devices etc. are as yet fully during proper functioning, provide needed fuel to the induction part of motor.

A large amount of test confirms, adopt device of the present invention after, the fuel economy performance of motor and gas exhausting property have all obtained very big improvement, and this apparatus structure is simple, easy for installation, has good practicability.

Claims

1, a kind of engine fuel supply device, this device comprise fuel output (1), catalysed partial (2), induction part (3) and mixed air vessel (4),

Described catalysed partial (2) has a housing (21), have fuel inlet (211) and fuel outlet (212) on this housing (21), wherein fuel inlet (211) is communicated with fuel output (1), fuel outlet (212) then links to each other with fuel nozzle (12), and the catalysis heap of being made by catalysis material (22) is closed in the described housing (21);

Described induction part (3) is the cavity (31) of a both ends open, and one end opening (311) links to each other with air-strainer, and the other end opening (312) then communicates with mixed air vessel (4), is provided with closure (33) in the cavity (31);

It is characterized in that: described opening (311 in the described cavity (31), 312) be provided with the air door (32) that is used to change the air inlet area between, closure (33) then is positioned at the downstream of air door (32) and locates near opening (312), described air door (32) and closure (33) be by a mechanism (34) synchronization regulation in proportion, and described fuel nozzle (12) is positioned at described air door (32) when opening on the formed air-flow path.

2, fuel supplying device as claimed in claim 1 is characterized in that: described catalysis material is with SiO ₂, Al ₂O ₃Or SiC etc. applies platinum, palladium, K on the material of carrier ₂O, Cr ₂O ₃, ThO ₂Fire and form Deng catalyzer, catalysis heap (22) is made described catalysis material sheet, is had the laminated construction of hole or porous clava to form.

3, fuel supplying device as claimed in claim 1, it is characterized in that: also have a heat recovery part (5) in this device, described heat recovery part (5) is surrounded the housing (21) of described catalysed partial (2), to utilize the engine exhaust heat heatable catalytic heap (22) that reclaims.

4, fuel supplying device as claimed in claim 3, it is characterized in that: described heat recovery part (5) is the heat recovery container (51) of box or tubular type, and the entrance point of this container (511) is with waste pipe and/or wait upon CWR and be connected.

5, fuel supplying device as claimed in claim 1 is characterized in that: described air door (32) is one, and fuel nozzle this moment (12) is arranged on cavity (31) wall on this air door (32) opposite.

6, fuel supplying device as claimed in claim 1 is characterized in that: described air door (32) is a pair of interior structure of cavity (31) that is arranged on induction part (3), and its relative opening and closing can change the air inlet area of cavity (31).

7, fuel supplying device as claimed in claim 1 is characterized in that: also comprise a starting fuel nozzle that is arranged on fuel nozzle (12) opposite in the cavity (31) of described induction part (3).

8, as the described fuel supplying device of one of claim 1 to 7, it is characterized in that, in the cavity (31) of described induction part (3), be provided with along airflow direction and the aeroscopic plate (35) parallel with air door (32).

9, fuel supplying device as claimed in claim 8 is characterized in that: described aeroscopic plate (35) is an one with described fuel nozzle (12).