Gasoline metering and backflow device with gasoline blocking mechanism

Abstract

The invention discloses a gasoline metering and backflow device with a gasoline blocking mechanism. The gasoline metering and backflow device with the gasoline blocking mechanism comprises a metering mechanism and a backflow mechanism; the metering mechanism comprises a liquid inlet communicating with a gasoline tank, a liquid outlet communicating with an engine, a liquid conveying pipeline, and a flowmeter arranged in the liquid conveying pipeline; a gasoline return opening is formed in the engine; the backflow mechanism comprises a first cavity, a liquid return opening formed in the first cavity and communicating with the gasoline return opening, a through hole formed in the lower portion of the first cavity and communicating with the liquid conveying pipeline, a gas outlet formed in the upper portion of the first cavity, the gasoline blocking mechanism arranged in the first cavity and located below the liquid return opening, and a control mechanism arranged inside the first cavity; the control mechanism comprises a rotary shaft rotationally arranged in the first cavity, a floater arranged at one end of the rotary shaft and located in the first cavity, and a plug ball arranged at the other end of the rotary shaft and located in the liquid conveying pipeline; and the gasoline blocking mechanism is located above the floater. The gasoline blocking mechanism is arranged above the floater so as to buffer high-pressure gasoline flowing into the first cavity, and the backflow efficiency is high.

Description

technical field [0001] The invention relates to a gasoline metering return device with an oil retaining mechanism. Background technique [0002] Among the gasoline entering the engine, about 10% of the gasoline will be burned, and about 90% of the gasoline will flow back through the oil return port of the engine. The returned gasoline is high pressure and contains air, which is generally depressurized by equipment After the exhaust gas is treated, the remaining gasoline is sent to the engine. [0003] Because the control mechanism in the existing return cavity contains a float, the returned gasoline will raise the liquid level, and the float will rise to make the gasoline in the return cavity flow out; when the high-pressure gasoline is passed into the return cavity, it will directly impact On the float, it cannot float with the rise of the liquid level, affecting the outflow of gasoline in the return cavity. Contents of the invention [0004] The object of the present i...

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Problems solved by technology

[0003] Because the control mechanism in the existing return cavity contains a float, the returned gasoline will raise the liquid level, and the float will rise to make the gasoline in the return cavity flow out; when the high-pressure gasoline is passed into the return cavity, it will directly impact On the float, so that it cannot float with the rise of the liquid level, affecting the outflow of gasoline in the return cavity

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