1results about "Multi-stage carburettors" patented technology

This application discloses a fuel supply system for a rock drill. The fuel supply system includes a housing body with a fuel tank inside; a carburetor including a fuel inlet, a fuel return, and an enrichment port, with the fuel inlet connected to the fuel tank; and an exhaust device having a first port, a second port, and a third port connected to a medium chamber. The first port is connected to the fuel tank pipeline, the second port to the enrichment port pipeline, and the third port to the fuel return pipeline. The exhaust device deforms and compresses in response to external pressure, creating a negative pressure state inside. After the external pressure is removed, it expands again. During the expansion process, air and residual fuel are drawn from the carburetor's internal fuel passage through the third port, creating a negative pressure inside the carburetor and drawing fuel from the fuel tank. When fuel is present in the exhaust device, it deforms in response to external pressure, and the fuel in the exhaust device can be compressed and sent to the carburetor through the second port for enrichment.