JPS5830082Y2 - 2 cycle engine oil usage - Google Patents

Description

[Detailed explanation of the invention] Conventionally, the throttle valve has not been lubricated, and water droplets are likely to form on the back side of the throttle valve due to the dew point effect due to adiabatic expansion. The throttle valve may become oxidized, making it difficult for the throttle valve to return to its original position.Especially if the carburetor body and throttle valve are both made of aluminum to reduce weight, since they are sliding parts of the same metal. , there was a tendency for sliding to lack smoothness.

This idea provides an oil supply port at the top of the throttle valve sliding tube of a sliding carburetor, supplies lubricating oil from here, and after this lubricating oil lubricates the sliding parts of the carburetor, it joins the engine with gasoline and air. It was sent to the engine to lubricate the engine.

One embodiment of this invention will be explained with reference to the drawings. Reference numeral 1 denotes a carburetor main body, which includes a horizontal air passage 2 and a vertical sliding tube 3.
is formed.

A sliding tube cover 4 is provided at the top of the sliding tube 3, and a sliding valve 6 is fitted into the sliding tube 3 with an operating cable 5 passing vertically therethrough.
and displaces the jet needle 7 up and down.

8 is a return spring of the sliding valve 6, and 9 is an idle slow jet.

An oil supply port 10 is provided at the top of the sliding tube 3.
A fuel supply pipe 11 is connected from the outside.

Oil supply pipe 11. The lubricating oil supplied into the sliding tube 3 through the oil supply port 10 flows down through the inner surface of the sliding tube 3, the operating cable 5, and the return spring 8.

The lubricating oil flowing down the inner surface of the sliding tube 3 lubricates the sliding portion between the inner surface of the sliding tube 3 and the sliding valve 6, and then descends into the air passage 2.

In addition, the lubricating oil flowing down through the operating cable 5 provides lubricity to the operating cable 5, and together with the lubricating oil flowing down via the return spring 8, passes through the gap between the jet needle T and the sliding valve 6. It descends into the air passage 2.

The lubricating oil that has descended into the air passage 2 mixes with gasoline and air within the air passage 2, and is sent to the engine to lubricate the engine.

As mentioned above, in this invention, the oil supply port 10 is provided at the top of the sliding tube 3 of the sliding type carburetor, and lubricating oil is supplied from there, so that the sliding valve 6 can slide smoothly. In addition, abnormal wear of the operating cable 5 can be prevented.

[Brief explanation of the drawing]

The figure is a sectional view of one embodiment of this invention. 3...Sliding tube, 6...Sliding valve, 10.
...Oil supply port.

Claims (1)

[Scope of utility model registration request] 1. An oil supply device for a two-stroke engine, characterized in that a sliding carburetor has a sliding valve that slides up and down inside a sliding cylinder, and an oil supply port is provided at the top of the sliding cylinder.