Fuel oil/gas control and switching system of dual-fuel internal combustion engine
A dual-fuel internal combustion engine and conversion system technology, applied in engine control, internal combustion piston engine, combustion engine and other directions, can solve problems such as the increase of dual-fuel engines, potential safety hazards, explosion of air intake boxes, etc., to achieve high fuel substitution rate and improve safety. performance, low cost
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Embodiment 1
[0034] Embodiment 1, the pneumatic control pipeline using compressed air as the power source of the present invention is further described in detail: In the embodiment, the system mainly consists of a fuel gas control valve 1, a gas automatic pressure regulating valve 2, a single cylinder gas control valve 5 and The single-cylinder gas nozzle consists of 4 main unit components and a control pipeline. The control pipeline is provided with compressed air by a compressed air pump, and the control pipeline includes a control main pipe 91 , a control branch pipe 92 and an intake and discharge control pipe 93 . From Figure 1 to Figure 3 It can be seen that one end of the control main pipe 91 is directly connected to the compressed air pump, and the other end of the control main pipe 91 is connected to the air inlet A of the fuel gas control valve 1 . One end of the control branch pipe 92 is connected to the control main pipe 91, and the other end is connected to the upper cavity a...
Embodiment 2
[0048] Embodiment 2. In the embodiment, the control pipeline is a hydraulic control pipeline using hydraulic pressure as the power source, and the control pipeline is equipped with a hydraulic pump to provide hydraulic pressure. Other principles are the same as in Embodiment 1.
[0049] The advantage of the present invention is that it can realize automatic switching between two fuels without shutting down for switching. When the gas fuel is disconnected, the governor will automatically push the fuel control lever 7 to move in the refueling direction to increase the fuel quantity. At this point the invention is in the figure 2 In the state shown, the compressed air opens the gas automatic pressure regulating valve 2 to the maximum. Since the gas has been disconnected, no gas enters the cylinder to participate in the combustion, and the dual-fuel engine can only burn pure liquid fuel. At this time, the dual-fuel engine becomes Pure diesel engine; when the gas supply resumes, ...
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