JP3075514B2 - Ammonia gas introduction device for hydrocarbon fuel mixing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ammonia gas introducing device for mixing hydrocarbon gas with ammonia gas generated from solid ammonia in an internal combustion engine of an automobile or the like in order to improve the fuel consumption rate. About.

[0002]

2. Description of the Related Art As a method for improving the combustion efficiency of fuel for an internal combustion engine such as a gasoline engine or a diesel engine, it has been proposed to mix ammonia gas generated from aqueous ammonia into fuel. Since the generation of gas is so rapid and it is necessary to introduce it at a concentration outside the explosion limit, its use is very difficult in practice and has not been put to practical use.

Accordingly, the present applicant has proposed a method of improving the combustion efficiency of fuel of an internal combustion engine by using a solid ammonia compound such as ammonium carbonate or ammonium bicarbonate capable of generating ammonia gas instead of ammonia water. Ammonia gas is generated from, and the generated ammonia gas is mixed with air or alone in a small amount into a hydrocarbon gas as a fuel, thereby increasing the output of the internal combustion engine to achieve a reduction in fuel cost, and also harmful. A hydrocarbon fuel combustion method that is superior in safety without substantially increasing the content of nitrogen oxides has been proposed (Japanese Patent Publication No. 56-54465 (Patent No. 1113127)).
reference).

FIG. 3 is a schematic view of a conventional ammonia gas generator for carrying out the above method, and FIG. 4 is a partially enlarged view of the ammonia gas generator shown in FIG. 3, which is made of resin containing powdery ammonium carbonate. Container 1 is housed in an aluminum container 2 and an upright ammonia gas outflow passage 4 is provided in the container 1 and the lid 3 on the upper portion thereof, and the upper end of the passage 4 is connected to a lateral passage 5 having both ends open to communicate in three directions. To form a pipe joint 6
A flow control pipe 11 is provided inside a vinyl pipe 7 fitted to the lower end of the pipe joint 6, and is opened into the container 1.

[0005] One end of the lateral passage 5 having both ends opened of the pipe joint 6 is connected to a heat-resistant silicon pipe 12.
The other end is opened to the atmosphere by a flow control pipe 11 provided therein, and the other end is connected to an annular vinyl pipe 15 surrounding an air filter 14 in an air cleaner 13 by a heat-resistant silicon pipe 12 through the flow control pipe 11, Ammonia gas outlet holes 1 drilled on the upper and lower surfaces of vinyl tube 15
6 opens into the air cleaner 13.

In the drawing, reference numeral 17 denotes an internal stirring pipe of the container 2 having one end opened to the atmosphere and the other end opened to the inside of the container 2, 18 a flow control pipe, 19 a mounting plate of the container 2,
Reference numeral 20 denotes an air cleaner air intake, and reference numeral 21 denotes a vaporizer.

The container 2 containing the container 1 containing ammonium carbonate is fixed to an appropriate place in the hood of the automobile, which is well ventilated while avoiding high temperature, by the mounting plate 19, and the open end of the atmosphere is aligned with the traveling direction of the automobile. After setting, the other end is connected to an annular vinyl tube 15 arranged inside the air cleaner 13 for mounting.

When the engine is started and the vehicle is started after the ammonia gas generator is installed, the inside of the container 1 receives a wind pressure in proportion to the traveling speed of the vehicle due to the wind flowing from the flow control pipe 18 provided at the tip of the internal stirring pipe 17. Ventilation of the powdery ammonium carbonate is promoted to promote generation of ammonia gas. Ammonium carbonate utilizes the property of generating ammonia gas and turning into ammonium bicarbonate when left in the air. When the ammonia gas generated in this way is filled in the container 1, the flow rate of the ammonia gas is adjusted by the wind pressure from the flow adjustment pipe 11 provided at one end of the lateral passage 5 having both ends open and the suction force of the air cleaner 13 provided at the other end. The ammonia gas flows out through the pipe 11 and the ammonia gas outflow passage 4, further reaches the annular vinyl pipe 15 in the air cleaner 13 through the flow rate adjusting pipe 11 and the heat-resistant silicon pipe 12, and is formed on the upper and lower surfaces of the annular vinyl pipe 15. Ammonia gas outflow holes 16
Causes ammonia gas to flow out, passes through the filter 14, and is sent into the engine via the carburetor 21 together with the purified air.

[0009]

In the ammonia gas introducing apparatus for mixing hydrocarbon fuel disclosed in the above publication, a resin container for accommodating powdered ammonium carbonate is accommodated in an aluminum container, and each passage is The number of parts is large due to the provision of a flow control pipe, and the need to provide an annular vinyl tube with an ammonia gas outlet in the air cleaner complicates the structure of the device, and introduces an introduction device for each model. There is a drawback that you have to prepare.

Furthermore, since powdery ammonium is used as solid ammonium, the concentration of generated ammonia gas is not uniform, and there is a drawback that ammonia gas of a constant concentration cannot be supplied.

The present invention eliminates the unevenness in the concentration of the generated ammonia gas, has a simple structure, can be used in various internal combustion engines, is versatile, and improves the fuel consumption rate. Is provided.

[0012]

The present invention SUMMARY OF THE INVENTION are Oite the internal combustion institutions for the hydrocarbon as fuel, ammonium carbonate between the air inlet of the air to the intake manifold, the ammonia gas from the solid ammonia such as ammonium bicarbonate A pineapple-shaped solid ammonia is stored in a hydrocarbon fuel mixing ammonia gas introduction device for generating and mixing the same gas in a small amount in a hydrocarbon gas together with air .
The outer surface is anti-oxidized and the inner surface is made of synthetic resin.
A solid ammonia storage container, an ammonia gas outflow passage communicating with the solid ammonia storage container internal space, an ammonia gas discharge passage and an air introduction passage communicating with the ammonia gas outflow passage, and a solid ammonia storage container
Stirring air introduction passage for introducing air into the inside and stirring
And the ammonia concentration provided in the ammonia gas discharge passage.
Concentration sensor and the concentration detected by the ammonia concentration sensor.
Temperature and preset optimum ammonia gas concentration range
So that the ammonia gas concentration falls within the aforementioned optimum concentration range.
And a control unit for controlling the solenoid valve .

[0013]

[0014]

FIG. 1 is a sectional view of an apparatus for introducing an ammonia gas for mixing hydrocarbon fuel according to the present invention, and FIGS. 1- (a) and 1- (b) respectively show A in FIG. 1- (c). -A and B
FIG. 1B is a cross-sectional view of the passage portion of the lid.

The container 1 for containing solid ammonium is made of a cylindrical aluminum can. The outer surface of the aluminum can can be improved in corrosion resistance by performing a well-known anti-oxidation process, and the inner surface is provided with corrosion resistance to ammonia gas by coating the inner surface with a synthetic resin having ammonia resistance.

The source of ammonia gas to be put into the container 1 is
It is preferable that the ammonia gas is formed in a pineapple shape so that the ammonia gas generated can be taken out without unevenness and can be stably taken out, and it is easy to handle and the vaporization area is almost constant.

The upper lid 3 of the solid ammonia container 1 is provided with an upright ammonia gas outflow passage 4 communicating with the inner space of the container 1, and the upper end of the passage 4 is connected to a lateral passage 5 having both ends open. To form a passage communicating with. One of the laterally open passages 5 at both ends is an ammonia gas discharge passage 5a, and the other is an air introduction passage 5b opening to the atmosphere. A heat-resistant silicon pipe 12 is connected to the ammonia gas discharge passage 5a of the both-end opening sideways passage 5, and the other end of the silicon pipe 12 is attached to the inside of the cylinder of the air cleaner. Note that an orifice may be provided in the air introduction passage 5b. The lid 3 is provided with an internal stirring pipe 17 for stirring the ammonia gas in the container 1.

Ammonia gas outflow passage 4 and lateral passage 5
An electromagnetic valve 8 is provided at a position where the intersection of the above, an ammonia concentration sensor 9 is provided in the ammonia gas discharge passage 5a, and a control unit 10 for controlling the electromagnetic valve 8 to be ON-OFF is provided.

As the ammonia concentration sensor 9, MO
A semiconductor gas sensor such as an SFET is used.

FIG. 2 is a block diagram of the control unit 10 shown in FIG. 1. The concentration signal detected by the ammonia concentration sensor 9 is subjected to pre-processing such as noise processing, waveform shaping, and voltage level adjustment in an input circuit 10a. Thereafter, it is led to the control circuit 10b. The control circuit 10b compares the ammonia gas concentration range with a preset optimal ammonia gas concentration range, outputs an ON-OFF signal, and converts the signal into a signal for driving an actuator 10d for turning on and off the electromagnetic valve 8 by an output circuit 10c. Turn on the solenoid valve 8 so that the concentration falls within the above concentration range.
OFF control is performed to adjust the ammonia concentration.

At the top of the lid, if necessary, a solenoid valve 8,
A protective cover 22 such as the control unit 10 is provided.

[0022]

EXAMPLE A test (equivalent to 1330 km at 60 km / h) was carried out by mounting the ammonia gas introducing apparatus for mixing hydrocarbon fuel of the present invention on a table for 16 hours under the following conditions.

Specifications of test test engine Test engine: Model EK23, manufactured by Fuji Heavy Industries Ltd. Total displacement: 544 cc Model: In-line water-cooled 2-cylinder, 4-cycle gasoline engine Test conditions Engine speed: constant at 3800 rpm Intake pipe pressure: -310 mmHg constant or shaft output 6.3 PS constant Ignition timing, A / F is set, cooling water and lubricating oil temperature are constant. Ammonia addition amount: 30 to 140 mg / l (pineapple shape) The test results are shown in Table 1. The improvement rate was calculated according to the following equation.

Improvement rate = 100− (fuel consumption rate without device / fuel consumption rate without device) × 100

[Table 1] The fuel consumption rate is improved by 10% or more by the ammonia gas introducing apparatus for mixing hydrocarbon fuel of the present invention.

[0025]

【The invention's effect】

(1) The number of parts is not small, the structure is simple, and mass production is possible.

(2) Since the density can be adjusted only by adjusting the set value of the control circuit, it is possible to cope with various types of vehicles.

(3) Since the source of ammonia gas to be put into the aluminum can is made of pineapple from powder, it is easy to handle, and since the vaporization area is almost constant, there is little unevenness in the generated ammonia gas concentration and stable. Ammonia gas can be taken out and combustion efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an ammonia gas introducing apparatus for mixing hydrocarbon fuel of the present invention, wherein FIGS. 1- (a) and 1- (b) are AA and BB of FIG. 1- (c), respectively. FIG. 1- (c) is a cross-sectional view of a passage portion of the lid.

FIG. 2 is a block diagram of a control unit shown in FIG.

FIG. 3 is a schematic diagram of a conventional ammonia gas generator.

FIG. 4 is a partially enlarged view of the ammonia gas generator shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Container 3 Cover 4 Ammonia gas outflow passage 5 Sideways opening sideways passage 5a Ammonia gas discharge passage 5b Air introduction passage 6 Fitting 7 Vinyl tube 8 Solenoid valve 9 Concentration sensor 10 Control unit 10a Input circuit 10b Control circuit 10c Output circuit 10d Actuator 11 Flow control pipe 12 Silicon pipe 13 Air cleaner 14 Air filter 15 Annular vinyl pipe 16 Ammonia gas outlet 17 Internal stirring pipe 18 Flow control pipe 19 Mounting plate 20 Air cleaner air inlet 21 Vaporizer 22 Protective cover

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-86020 (JP, A) JP-A-58-162248 (JP, A) Fully open 49-130222 (JP, U) Really open 6935 (JP, U) Japanese Utility Model 63-73521 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F02M 25/00

Claims (1)

(57) [Claims] In an internal combustion engine using hydrocarbon as fuel, ammonia gas is generated from solid ammonia such as ammonium carbonate and ammonium bicarbonate between an air intake port and an intake manifold, and the gas is combined with air to form a hydrocarbon gas. Pine-up in an ammonia gas introduction device for mixing hydrocarbon fuel to mix a small amount in gas
The outer surface that holds solid ammonia
A solid ammonia storage container whose inner surface is coated with a synthetic resin material, an ammonia gas outflow passage communicating with the solid ammonia storage container inner space, an ammonia gas discharge passage and an air introduction passage communicating with the ammonia gas outflow passage , Air was introduced into the solid ammonia container and stirred.
And an ammonia concentration chamber provided in the ammonia gas exhaust passage.
Sensor, ammonia gas outflow passage, ammonia gas discharge passage, and
The solenoid valve provided at the position where the air introduction passage intersects, and the concentration detected by the ammonia concentration sensor
Compared with the optimal ammonia gas concentration range
Control the solenoid valve so that the gas concentration is within the above optimum concentration range
An ammonia gas introduction device for mixing hydrocarbon fuel, wherein a cover having a control unit for performing the above operation is covered.