Gas idling transition passage structure for oil and gas dual-purpose carburetor

Abstract

The utility model provides a gas idling transition passage structure for oil and gas dual-purpose carburetor, comprising a carburetor body 1 and a mixing chamber 4; a choke valve 5 and a throttle valve 9 are disposed in the mixing chamber 4 in the order of the air flow direction; a gas intake pipe 2 for supplying gas to the mixing chamber 4 is disposed on the carburetor body 1; a first air inlet pipe 7 and a second air inlet pipe 8 are disposed in the carburetor body 1 in parallel; an opening of an outlet end of the second air inlet pipe 8 is located in the mixing chamber 4 and the position of the outlet end of the second air inlet pipe 8 is at the intersection of an outer circle and the mixing chamber 4 when the throttle valve 9 is closed.

Claims

1. A gas idling transition passage structure for oil and gas dual-purpose carburetor comprises a carburetor body 1 and a mixing chamber 4; a choke valve 5 and a throttle valve 9 disposed in the mixing chamber 4 in the order of the air flow direction; a gas intake pipe 2 for supplying gas to the mixing chamber 4 disposed on the carburetor body 1; a first air inlet pipe 7 and a second air inlet pipe 8 disposed in the carburetor body 1 in parallel; when in use, an opening of an outlet end of the second air inlet pipe 8 is located in the mixing chamber 4 and the position of the outlet end of the second air inlet pipe 8 is at the intersection of an outer circle and the mixing chamber 4 when the throttle valve 9 is closed; an outlet opening of the first air inlet pipe 7 located in front of the second air inlet pipe 8 in the mixing chamber 4; the first air inlet pipe 7 and the second air inlet pipe 8 communicated with the gas intake pipe 2 through a bypass passage 3.

2. The gas idling transition passage structure for oil and gas dual-purpose carburetor as defined in claim 1, wherein a distribution chamber 6 is disposed between the bypass passage 3 and the first air inlet pipe 7 and the second air inlet pipe 8.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a Schematic diagram of the utility model;

(2) FIG. 2 is a is a schematic diagram of the structure of the utility model when the throttle valve is fully closed;

(3) FIG. 3 is a schematic diagram of the structure of the utility model when the throttle valve is in an idling state;

(4) FIG. 4 is a schematic diagram of the structure of the utility model when the throttle valve is in the idle to high-speed transition state.

DETAILED DESCRIPTION OF THE INVENTION

(5) Referring to FIGS. 1-4, a gas idling transition passage structure for oil and gas dual-purpose carburetor comprises a carburetor body 1 and a mixing chamber 4; a choke valve 5 and a throttle valve 9 are disposed in the mixing chamber 4 in the order of the air flow direction; a gas intake pipe 2 for supplying gas to the mixing chamber 4 is disposed on the carburetor body 1; a first air inlet pipe 7 and a second air inlet pipe 8 are disposed in the carburetor body 1 in parallel; an opening of an outlet end of the second air inlet pipe 8 is located in the mixing chamber 4 and the position of the outlet end of the second air inlet pipe 8 is at the intersection of an outer circle and the mixing chamber 4 when the throttle valve 9 is closed; an outlet opening of the first air inlet pipe 7 is located in front of the second air inlet pipe 8 in the mixing chamber 4; the first air inlet pipe 7 and the second air inlet pipe 8 are communicated with the gas intake pipe 2 through a bypass passage 3.

(6) Preferably, a distribution chamber 6 is disposed between the bypass passage 3 and the first air inlet pipe 7 and the second air inlet pipe 8.

(7) The utility model provides a gas idling transition passage structure for oil and gas dual-purpose carburetor. When the engine is working in idling speed and transitional conditions, sufficient gas is supplied to the mixing chamber 4 through the first air inlet pipe 7 and the second air inlet pipe 8 disposed in parallel and mixed with air to provide to the engine to ensure the stable operation of the engine during idling and transitional conditions;

(8) as an embodiment and showed in FIG. 2, the opening of the outlet end of the second intake pipe 8 is, disposed in the mixing chamber 4 and the position of the outlet end of the second air inlet pipe 8 is at the intersection of the outer circle and the mixing chamber 4 when the throttle valve 9 is closed;

(9) as an embodiment and showed in FIG. 3, when the throttle valve 9 is opened to the idle state, the air outlet opening of the second air inlet pipe 8 is communicated with the mixing chamber 4 to supply gas into the mixing chamber 4, which has high sensitivity and improves the controllability of the engine;

(10) as an embodiment and showed in FIG. 4, when the throttle valve 9 continues to open and air goes cross the first air inlet pipe 7, the first air inlet pipe 7 and the second air inlet pipe 8 supply enough gas to the mixing chamber 4 at the same time, so as to ensure the fuel gas demand of the engine in the transient condition and improve the stability of the engine; through the distribution chamber 6, the gas is able to be better supplied to the first inlet pipe 7 and the second air inlet pipe 8; meanwhile, the manufacturing process of the first inlet pipe 7 and the second air inlet pipe 8 is simple, and the machining accuracy of the two pipes is easier to be guaranteed.

(11) It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply one of these entities or operations. There is any such actual relationship or order between. Moreover, the terms “comprise” or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes those that are not explicitly listed other elements of, or also include elements inherent to this process, method, article or equipment.

(12) Although the embodiments of the present utility model have been shown and described, for those skilled in the art, it will be understood that various changes, modifications and replacements can be made to these embodiments without departing from the principle and spirit of the present utility model, the scope of the present utility model is defined by the appended claims and their equivalents.