Carburetor and choke valve control mechanism thereof

Abstract

The invention relates to a carburetor and a choke valve control mechanism thereof. The carburetor comprises a carburetor body, a throttle valve arranged on the carburetor body, a throttle valve rocker arm connected with the throttle valve, a choke valve, a choke valve shaft connected with the choke valve and a choke valve control mechanism, wherein the choke valve control mechanism comprises a choke valve rocker arm, a slide connecting rod, a return spring and a metal temperature control device for controlling the position of the choke valve rocker arm; the slide connecting rod is connected with the throttle valve rocker arm and the choke valve shaft of the carburetor; the return spring is arranged on the choke valve shaft and connected with the carburetor body; the choke valve rocker arm is rotatably connected to the choke valve shaft; a rocker arm working surface used for pushing the choke valve shaft to rotate is arranged on the choke valve rocker arm; and the metal temperature control device is connected with the choke valve rocker arm and arranged on a heating component of an engine. The invention has the advantages of convenient use, simple structure, stability and reliability.

Description

technical field [0001] The invention relates to a carburetor of an engine, in particular to a carburetor and a fully automatic choke valve thereof. Background technique [0002] With the improvement of the level of science and technology, people's requirements for automatic control of products are also getting higher and higher. Generally, the carburetor choke valve needs to be closed manually when starting the engine, and the choke valve needs to be opened manually after starting. The choke valve is manually controlled, which is extremely inconvenient. see figure 1 , figure 1 It is a structural schematic diagram of a carburetor and its choke valve in the prior art. As shown in the figure, it is a conventional carburetor. When the engine is started, the choke valve 100 is fully closed. After starting, the choke valve needs to be manually driven by turning the shift fork 200 The shaft 300 rotates and opens the choke valve 100. After the engine is shut down, the next time t...

AI Technical Summary

Problems solved by technology

[0003] The carburetor disclosed in the Chinese Utility Model Patent No. "ZL200820078655.0" and named "A Carburetor" can improve the reliability of engine starting To avoid difficulty in starting and idling flameout after the choke valve is opened, but the choke valve of the carburetor needs to be manually controlled, which affects the convenience of operation to a certain extent

The patent number is "ZL200510055078.4" and the Chinese invention patent named "automatic choke device". The automatic choke device disclosed by it can carry out precise choke control adapted to the running state of the engine, but its structure is complicated ,higher cost

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