Bypass one-way valve of double-fuel supply system of DME/diesel engine
A technology of supply system and one-way valve, which is applied in charging system, fuel injection pump, fuel injection device, etc., can solve the problems of insufficient fuel supply and severe pressure fluctuation, and achieve smooth fuel supply, stable pressure, and avoidance of gas. blocking effect
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[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] The DME / diesel engine dual fuel supply system bypass check valve shown in the figure is installed between the pump body 1 and the oil outlet valve 2 of the plunger type fuel injection pump. The inner cavity of the pump body 1 is provided with a plunger sleeve 3, The plunger sleeve 3 is provided with a plunger 4 that slides with it, and the side wall of the pump body 1 is provided with an oil return hole 5 penetrating through its inner wall, and the oil return hole 5 is connected to the fuel tank through the first outer pipeline 6 7, the plunger 4 is provided with a chute 19 for controlling the fuel supply; it includes an upper valve body 8, a lower valve body 9 integrally formed with the upper valve body 8, an upper valve body 8 and A valve cavity 11 for installing the one-way valve assembly 10 is provided between the lower val...
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