Carburetor base of engine

Abstract

A carburetor base of an engine defines an axial through hole and a pulsation hole channel. An anti-blocking component is mounted inside the axial through hole and defines an air inlet channel. The air inlet channel communicates with the pulsation hole channel so as to avoid blocking of condensed fuel oil inside the pulsation hole channel.

Claims

1. A carburetor base assembly for an engine having a cylinder and a carburetor, the carburetor base assembly comprising: a carburetor base defining an axial through-hole having a surface and an axially extending pulsation hole channel defined in the surface; and an anti-blocking component, the anti-blocking component being a tubular member mounted in the axial through-hole and defining an air inlet channel therethrough, the tubular member defining an annular recess on an outer wall thereof, the annular recess communicating with the axially extending pulsation hole channel, a radial through-hole defined through the tubular member connecting the annular recess and the air inlet channel, the radial-through hole being located above the air inlet channel when the engine is held in an upright operating condition, whereby the air inlet channel communicates with the axially extending pulsation hole channel via the radial through-hole and the annular recess so that fuel oil vaporized by the carburetor passes through the air inlet channel and into the cylinder reducing the possibility of the pulsation hole channel being clogged by condensed fuel oil.

2. The carburetor base assembly for an engine according to claim 1, wherein the carburetor base is disposed between the cylinder and the carburetor.

3. The carburetor base assembly for an engine according to claim 2, wherein the carburetor base includes a first end portion and a second end portion opposite to the first end portion, the first end portion being matched with the cylinder, and the second end portion being matched with the carburetor.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a cross-sectional view of an engine corresponding to a preferred embodiment of the present invention.

(2) FIG. 2 is an isometric view of a carburetor base and anti-blocking component assembly of the engine in FIG. 1.

(3) FIG. 3 is an isometric view of the carburetor base in FIG. 2.

(4) FIG. 4 is an isometric view of an anti-blocking component in FIG. 2

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(5) Further not-limiting description will made on the technical solution of the present invention in detail below with reference to the preferred embodiments and drawings.

(6) Referring to FIG. 1, an engine corresponding to the preferred embodiment of the present invention is a four-stroke petrol (gasoline) engine, which includes a cylinder 1, a carburetor 3 and a carburetor base 5 disposed between the cylinder 1 and the carburetor 3. The carburetor base 5 includes a first end portion 50 and a second end portion 52 opposite to the first end portion 50, wherein the first end portion 50 is matched with the cylinder 1, while the second end portion 52 is matched with the carburetor 3.

(7) Further referring to FIG. 2 to FIG. 4, the foregoing carburetor base 5 is provided with an axial through hole 54, a pulsation hole channel 56 and an anti-blocking component 60. The pulsation hole channel 56 is disposed on the inner wall 51 of the axial through hole 54 and is provided with an anti-blocking gap 58. The anti-blocking gap 58 is communicated with the pulsation hole 32 of the carburetor 3.

(8) The foregoing anti-blocking component 60 is mounted in the axial through hole 54 and is provided with an air inlet channel 53, and the air inlet channel 53 can be communicated with the pulsation hole channel 56. The anti-blocking component 60 is a tubular article, and is tightly matched with the axial through hole 54. The outer wall 55 of the anti-blocking component 60 is provided with an annular recess 57, and the annular recess 57 is provided with a through hole 59. When the anti-blocking component 60 is mounted in the axial through hole 54, the through hole 59 is located above the air inlet channel 53 (see FIGS. 1 and 2). The annular recess 57 realizes more convenient manufacturing and assembling; and meanwhile, the position of the through hole 59 can be adjusted according to different use situations of the machine during manufacturing, so that the through hole is located above the air inlet channel 53, and blocking of the through hole 59 is prevented.

(9) In this way, the air inlet channel 53 communicates with the pulsation hole channel 56 through the foregoing through hole 59; moreover, by disposing the through hole 59 above the air inlet channel 53, the fuel oil vapourized by the carburetor 3 will smoothly pass through the air inlet channel 53 and then enter the cylinder 1, thus reducing and even avoiding the pulsation hole channel 56 or pulsation hole 32 from being blocked by the condensed fuel oil. The carburetor base 5 of the engine provided by the present invention has the advantages of novel structure and excellent running effect, and has excellent effects on the stable working of the engine.

(10) It should be noted that the foregoing preferred embodiments are merely to explain the technical concepts and features of the present invention, intended to enable those familiar with this technology to understand the contents of the present invention and implement accordingly, but cannot limit the protection scope of the present invention for this account. Any equivalent change or modification made according to the spirit of the present invention shall all fall within the scope of the present invention.