JPH033963A - Driving system for two-cycle spark ignition engine by ultrasonic atomizer - Google Patents

Abstract

PURPOSE:To burn light oil heavier than kerosene, reduce the fuel cost, and secure safety by feeding the starting fuel to an ultrasonic atomizer when an engine is started, feeding light oil after starting, and atomizing light oil and spraying it into an intake pipe. CONSTITUTION:A small quantity of gasoline is fed to a ultrasonic atomizer 2 from a fuel feed pipe 23 when an engine is started, and the gasified gasoline is fed to a combustion chamber 7 via reed valves 12 and 13. Light oil is fed to a horn 21 from the fuel feed pipe 23 after the engine is started, and the light oil is atomized and sprayed into an intake pipe 14. When a carburetor 15 is provided, the starting fuel is fed to the carburetor 15 and atomized when the engine is started. Combustibility is improved via the atomization by the ultrasonic atomizer 2, light oil heavier than kerosine is burnt in a two-cycle spark ignition engine, the fuel cost is reduced, and safety can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a system for driving a two-cycle spark ignition engine using an ultrasonic atomizer that enables the two-cycle spark ignition engine to be driven with light oil.

[Conventional technology]

Conventionally, various applications of ultrasonic injection valves to spark ignition engines using gasoline as fuel have been proposed.

Spark ignition engines have the advantage of being lighter and less noisy than diesel engines, but because they use gasoline as fuel, they have the disadvantages of high fuel costs and inferior safety.

On the other hand, the use of fuels other than gasoline is limited to outboard motors and two-cycle spark ignition engines for agriculture. An ultrasonic atomizer using a plate is used to atomize fuel only during startup, and during steady operation, fuel is supplied by a vaporizer.

[Problem to be solved by the invention]

However, in the conventional method described above, since the ultrasonic atomization device uses a diaphragm, the spray flow rate is low and the ultrasonic atomization device can only be used at startup, and it uses light oil, which is heavier than kerosene, as fuel. I couldn't.

The purpose of the present invention is to solve the above problems, and to
In a cycle spark ignition engine, the injection amount by an ultrasonic atomizer is increased to enable the use of light oil as fuel.

[Means to solve the problem]

To this end, the driving method of the two-cycle spark ignition engine using the ultrasonic atomizer of the present invention is to arrange the ultrasonic atomizer 2 in the intake pipe 14 of the two-cycle spark ignition engine 1, and supply starting fuel when starting the engine. The light oil is supplied to the ultrasonic atomizer 2, and after the engine is started, the light oil is supplied to the ultrasonic atomizer 2, and the light oil is atomized and sprayed into the intake pipe 14.

Examples of starting fuels include gasoline fractions and highly flammable chemical products such as naphtha, thinner, and ether, which are normally liquid substances having a flash point equivalent to gasoline fractions.

The present invention is characterized in that an ultrasonic atomizer is disposed in the intake pipe to atomize and atomize the fuel.In addition to the ultrasonic atomizer, a carburetor is disposed, and when starting the engine, the fuel is atomized and atomized. Supplying starting fuel to the carburetor and atomizing it, then
It is also possible to supply light oil to an ultrasonic atomizer and atomize it.

Note that the numbers added to the above configurations are for comparison with the drawings, and the configurations of the present invention are not limited thereby.

[Effect]

In the present invention, for example, as shown in FIG. 1, when starting the engine, a small amount of gasoline is supplied to the ultrasonic atomizer 2 from the fuel supply pipe 23, and the vaporized gasoline is passed through the reed valve 12, 13 to the combustion chamber. Supply to 7. After the engine is started, light oil is supplied from the fuel supply pipe 23 to an ultrasonic atomization value W2, and the light oil is atomized and sprayed into the intake pipe 14.

〔Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a cross-sectional view of an embodiment in which an ultrasonic atomizer according to the present invention is attached to a two-cycle spark ignition engine 1. As shown in FIG.

The two-cycle spark ignition engine 1 has an upper cylinder 3 and a lower cylinder 4. A piston 6 connected to a connecting rod 5 is disposed in the cylinder to form a combustion chamber 7, and ignition is performed by facing the combustion chamber 7. A plug 8 is arranged.

In addition, a crankshaft 9 on which the connecting rod 5 slides;
Upper crankcase 10 and lower crankcase 11
is located. The upper crankcase 10 and the lower crankcase 11 are connected to an intake pipe 14 via reed valves 12.13, respectively. An ultrasonic atomizer 2 is disposed in the intake pipe 14, and a carburetor 15 is disposed as necessary. Note that 17 is a recoil type starter.

The ultrasonic atomizer 2 includes a horn 21 disposed within a sleeve 20, and the sleeve 20 is installed in the intake pipe I4 so as to be inclined toward the engine side, and includes an ultrasonic oscillator (not shown).
The electrical/acoustic transducer 22 converts the signal output from the fuel supply pipe 23 into an ultrasonic vibration, and atomizes the fuel supplied from the fuel supply pipe 23 to the atomization region of the horn 21 to atomize the fuel supplied from the fuel supply pipe 23 to the intake pipe 14.
It is configured to spray inside.

To explain the operation of the present invention having the above configuration, first, when starting the engine, a small amount of gasoline is supplied to the ultrasonic atomizer 2 from the fuel supply pipe 23, and the vaporized gasoline is combusted via the reed valves 12 and 13. Supply to chamber 7. After the engine is started, light oil is supplied from the fuel supply pipe 23 to the horn 21, and the light oil is atomized and sprayed into the intake pipe 14. In addition, when a carburetor 15 is provided,
The starting fuel may be supplied to the carburetor 15 and atomized when the engine is started.

Note that the present invention is not limited to the above embodiments, and various modifications are possible.For example, in the above embodiments,
Although an example in which the present invention is applied to a two-cylinder engine is shown, the present invention is not limited to this.

[Effects of the Invention] As described above, according to the present invention, by improving combustibility through atomization of the ultrasonic atomizer, it is possible to achieve combustion of diesel oil, which is heavier than kerosene, in a two-cycle spark ignition engine, and to reduce fuel costs. It is possible to achieve reduction and ensure safety.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of an ultrasonic atomizer according to the present invention installed in a two-stroke spark ignition engine. Fig. 1...2-cycle spark ignition engine, 2...Ultrasonic 7 atomizer, 14...Intake pipe. Applicant Toa Fuel Industries Co., Ltd. (1 other person)

Claims (1)

[Claims] (1) An ultrasonic atomizer is installed in the intake pipe of a two-cycle spark ignition engine, and when the engine is started, starting fuel is supplied to the ultrasonic atomizer, and after the engine is started, light oil is atomized by the ultrasonic atomizer. A drive system for a two-cycle spark ignition engine using an ultrasonic atomizer, which is characterized by supplying light oil to the device, atomizing light oil, and spraying it into an intake pipe.