CPC F02D 19/0676 (2013.01) [F02M 21/0236 (2013.01); F02M 37/0064 (2013.01); F16K 27/0263 (2013.01); F16K 31/0603 (2013.01)] | 11 Claims |
1. A multi-fuel switching device, comprising a gas part, wherein the gas part comprises a switching valve, the switching valve comprises a housing having an air inlet and an air outlet, a valve core is rotatably set within the housing and located between the air inlet and the air outlet, the valve core is provided with a first airway and a second airway, cross-sectional sizes of the first airway and the second airway are different, and the first airway or the second airway is selected through rotating the valve core to connect the air inlet and the air outlet.
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