JPH0130606Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a kerosene vaporizer.

FIG. 1 shows a kerosene carburetor used in general-purpose engines. When kerosene is used as a fuel for an internal combustion engine, starting performance is poor at low or normal temperatures.Currently, gasoline is used for starting at normal temperatures, and the carburetor also has two fuel supply systems: kerosene and gasoline.

In the figure, 1 is the carburetor main body, and 2 is the main nozzle, which serves as the main passage for fuel. 3 is the float chamber, which serves as a fuel reservoir. A needle valve 4 controls the inflow of fuel (kerosene) into the float chamber 3. Reference numeral 5 denotes a float, which moves the needle valve 4 according to changes in the oil level in the float chamber 3 to control the fuel flow rate to the float chamber 3 to keep the oil level A in the float chamber 3 constant. 6 is the hinge,
It connects the float 5 and the main body. 7 is the main jet, which controls the fuel flow rate. 8 is at low temperature;
This is the gasoline chamber for the gasoline reservoir when starting the engine. The gasoline injected from below the gasoline chamber 8 has a lighter specific gravity than kerosene, so it accumulates here. A spring 9 fixes the gasoline chamber 8 within the float chamber 3. 10 is a gasoline supply passage, and the gasoline outlet 10b is directly above (vertically above)
It is open to 10a is a gasoline inlet.
11 is a needle valve, and when you pull it to the right in the figure, the needle valve tip 11
a moves, the passage 10 opens, and gasoline flows from the auxiliary gasoline tank to the outlet 1 through the inlet 10a.
It is injected into the float chamber 3 (gasoline chamber 8) from 0b. 12 is a spring, and the needle valve 11 is pulled.
Return it to its original position and cut off the gasoline supply. 13
is a discharge pipe for fuel overflow, which discharges fuel to the outside when gasoline is injected to a certain volume or more.

The above is the mechanism of a conventional kerosene vaporizer, but when kerosene is initially injected into the float chamber 3, the air in the gasoline chamber 8 often cannot be completely removed (space B in Figure 2). Above, gasoline outlet 10
Since b is open directly above, when gasoline is injected, as shown in Figure 2, the gasoline will forcefully spray out and collide with the inner wall of the gasoline chamber 8, and the gasoline will not be properly filled into the chamber 8, resulting in the gas being injected as shown in arrow A. It flows out of chamber 8.

If you start the engine in this state (for example, when only about half of gasoline chamber 8 is filled with gasoline), the engine will run out of gasoline and switch to kerosene before the engine is sufficiently warmed up after starting, resulting in hunting or, in the worst case scenario, There were times when the engine stalled. Conventional vaporizers have the above-mentioned drawbacks.

The purpose of the present invention is to focus on the above points and provide a carburetor that can increase the amount of gasoline filled.The main features of this device are the kerosene supply port provided at the top of the float chamber and the opening. It has a bowl-shaped gasoline chamber provided opposite to the bottom inner wall surface of the float chamber, and a gasoline outlet provided within the gasoline chamber to protrude from the bottom inner wall surface of the float chamber, and charges gasoline at the time of startup. In this type of kerosene vaporizer, a partition plate is provided through which the protrusion through which the gasoline outlet opens is connected in an arc shape along the inner wall of the opening edge of the gasoline chamber.

This increases the amount of gasoline charged and improves engine warm-up.

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

FIG. 3 is a sectional view showing essential parts of a carburetor according to an embodiment of the present invention, and FIG. 4 is a sectional view taken along the - arrow in FIG.

The carburetor main body mechanism is the same as the reference numerals 1 to 13 in FIG. 1, except for the gasoline chamber 8.

In FIG. 3, a partition plate 8a as shown is attached to the gasoline chamber 8. In addition, the partition plate 8a
Hole 81 where gasoline outlet 10b enters near the center of
(See Figure 4).

The operation in the case of the above configuration will be described.

While the needle valve 11 is being pulled, gasoline flows into the float chamber 3 from the auxiliary gasoline tank. Similar to the conventional carburetor, gasoline flows forcefully into the gasoline chamber 8, collides with the inner wall, and tries to flow out of the gasoline chamber 8, but the partition plate 8a is provided to prevent this. Since leakage to the outside is prevented, the amount of gasoline filled into the gasoline chamber 8a increases.

The above case has the following effects.

This increases the amount of gasoline charged for starting (warming up), improving starting performance and warming up performance at room temperature.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional carburetor, FIG. 2 is a sectional view showing a gasoline chamber of the carburetor shown in FIG. 1, and FIG. 3 is a sectional view of a gasoline chamber of an embodiment of the carburetor according to the present invention. FIG. 4 is a sectional view taken along the - arrow in FIG. 3. 8... Gasoline chamber, 8a... Partition plate.

Claims (1)

[Scope of Claim for Utility Model Registration] A kerosene supply port provided at the top of the float chamber, a bowl-shaped gasoline chamber with an opening facing the bottom inner wall surface of the float chamber, and a float chamber within the gasoline chamber. In a kerosene vaporizer having a gasoline outlet protruding from a bottom inner wall surface and charging gasoline at startup, the protrusion through which the gasoline outlet opens,
A carburetor characterized in that a partition plate is provided that connects in an arc shape along the inner wall of the opening edge of a gasoline chamber.