JP2554373Y2 - Spark ignition engine for fire pumps - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spark-ignition engine for a fire pump that mainly burns light oil as a fuel for continuous operation.

[0002]

2. Description of the Related Art At present, gasoline-fired engines are mainly used as power for emergency fire pumps mounted on special ships in Japan and other ships. Not only was there a problem, but there was also a problem that operating costs were high.

[0003] Accordingly, there is a demand for using a light oil combustion engine that uses light oil that is safer than gasoline. In response to this, for example, an engine capable of burning light oil using various means such as an ultrasonic fuel atomizer has been studied, but adopting an ultrasonic fuel atomizer or the like increases the cost and increases the engine cost. This is contrary to the compact size and light weight of the camera, making it difficult to carry.

[0004] In order to solve the above problems, a method has been found in which each cylinder is equipped with a carburetor to burn light oil (Japanese Patent Application No. 3-249469). The present invention is obtained by further studying and improving the content of the above-mentioned patent (a fuel supply device for a two-cycle spark ignition engine). Specifically, each cylinder is supplied with an air-fuel mixture from one carburetor. Items such as providing a valve for completely shutting off the starting gasoline after the start have been added.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and has as its object to provide a light oil combustion type spark ignition engine which is relatively inexpensive and easy to carry. Is to provide.

[0006]

Means for Solving the Problems A spark ignition engine for a fire pump according to the present invention, which can achieve the above object, is a gasoline which supplies gasoline as starting fuel via a shutoff device.
A supply passage, a continuous operation for a fuel which is interposed the fuel pump
Connected to the light oil supply path for supplying all light oils , and
The cab <br/> letter for vaporizing fuel supplied from the supply path is provided on the intake pipe, it is characterized in that it has provided the heating device and the said diesel fuel supply path carburetor.

With the above configuration, the starting fuel (gas
Sorin), it can be operated continuously using light oil.
So you can engage in fire fighting safely. Also a normal vaporizer
Conventional device using an ultrasonic fuel spray device
Lighter , more compact and easier to carry
You. Also, the cost is low. Furthermore, the light oil supply route
By operating the heating device provided on the carburetor
It is possible to vaporize even light oil with poor fluidity.
Extinguish fires using light oil even on the ground or in cold weather.
You.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 1, reference numeral 1 denotes a spark ignition engine, which is an emergency fire pump 2 mounted on various types of ships.
Is a two-cylinder two-cycle engine for driving the engine. As in this embodiment, in the case of two cylinders, it is preferable that the cylinders 1A are arranged vertically and the crankshafts 1B are arranged horizontally so that the vaporized fuel is evenly drawn into each cylinder.

Further, as in the case of a conventionally used kerosene-burning engine, the compression ratio is set so as to prevent knocking of the engine.
For example, it is desirable to lower it to about 5 to 6. The spark ignition engine 1 includes a starting fuel supply system 5 connected to a gasoline tank 4 for supplying gasoline to the carburetor 3 as starting fuel, and a continuous operating fuel used during continuous operation, for example, light oil. And a fuel supply line 7 for continuous operation to which a fuel tank 6 for supplying the same to the carburetor 3 is connected.

The above carburetor 3 is provided with
The carburetor 3 is provided in an intake pipe 9 of the spark ignition engine 1 and can be used to vaporize two types of fuel, a starting fuel from the engine and a fuel for continuous operation from a supply system path 7. In conventional kerosene combustion engines, each cylinder was equipped with a carburetor, but for carburetors that atomize finely, one carburetor can be used by supplying air to each cylinder in a balanced manner. The result became clear. By using only one, there are advantages such as weight reduction, reduction of mounting space, and simplification of the system.

On the other hand, in the spark ignition engine 1, a shutoff device 10 which can be opened and closed is provided in the supply line 5 so that the starting fuel does not enter the carburetor 3 during continuous operation. With this device, the starting fuel required for the restart can be secured. Further, in order to improve the fluidity of the fuel in a cold region or in a cold season, a fuel heating device 11 is attached to the fuel supply system 7 for continuous motion, and the function of the fuel heating device 11 is poor or the fuel fluidity is low. A fuel pump 12 is provided in the supply system 7 so that fuel can be supplied to the carburetor 3 even in a bad state. Further, the fuel heating device 11 is attached not only to the fuel tank 6 and the supply system path 7 but also to the carburetor 3 so that the carburetor 3 can heat the fuel for continuous operation.

[0012]

As described above, according to the present invention, starting is performed.
Starting with fuel for fuel (gasoline), and running continuously using light oil
It is safe to engage in fire fighting because it can be turned over Also,
Since an ordinary vaporizer is used, an ultrasonic fuel spray device was used.
Lighter, more compact and more portable than conventional equipment
Easy. Also, the cost is low. Furthermore, light oil supply
Activate the heating devices provided in the supply path and carburetor
This makes it possible to vaporize even light oil with poor fluidity
Firefighting activities using light oil even in cold regions or in cold weather
Can be.

[Brief description of the drawings]

FIG. 1 is a schematic fuel system diagram of a spark ignition engine according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spark ignition engine 3 Carburetor 4 Gasoline tank 5 Starting fuel supply system 6 Fuel tank 7 Continuous operation fuel supply system 9 Intake pipe 10 Shutoff device 11 Fuel heating device 12 Fuel pump

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location F02M 31/125 F02M 31/12 321B 321D 321F

Claims (1)

(57) [Scope of request for utility model registration] 1. A starting fuel having a shut-off device
A gasoline supply path for supplying gasoline and a light oil supply for supplying light oil as fuel for continuous operation with a fuel pump interposed
A spark igniter for a fire-extinguishing pump , wherein a carburetor for connecting a supply path and for vaporizing fuel supplied from each supply path is provided in an intake pipe, and a heating device is disposed in the light oil supply path and the carburetor. organ.