Search Results

As efficient and low-pollution alternative fuel, dimethyl ether (DME) has shown its excellent performance of combustion and emissions. There is a phenomenon of DME gasification in the in-line fuel pump of DME-diesel engine. DME gasification can result in “vapor lock” and serious inequality of the fuel supply in DME-diesel fuel system. This paper presents a simple solution to improve DME gasification in DME-diesel fuel system. The key feature of the solution is just a bypass check valve, which is assembled between the intake fuel supply and the plunger chamber of the in-line pump. DME gasification in the in-line pump can be effectively eliminated by means of the bypass valve design.