Oil supply system of saddle-shaped gasoline tank

Abstract

The invention provides an oil supply system of a saddle-shaped gasoline tank. The oil supply system comprises the saddle-shaped gasoline tank, a fuel pump, a siphoning mechanism and a siphon. A main gasoline tank body is arranged on one side of the gasoline tank, and an auxiliary gasoline tank body is arranged on other side of the gasoline tank. The fuel pump is arranged in the main gasoline tank body and conveys gasoline in the main gasoline tank body to an engine. The siphoning mechanism is arranged in the auxiliary gasoline tank body. One end of the siphon is communicated with the siphoning mechanism, the other end of the siphon is communicated with the main gasoline tank body, and therefore gasoline in the auxiliary gasoline tank body can be conveyed to the main gasoline tank body. The oil supply system further comprises an oil return pipe. One end of the oil return pipe is communicated with a high-pressure oil rail of the engine, and the other end of the oil return pipe is communicated with the siphoning mechanism. The oil supply system of the saddle-shaped gasoline tank is simple in structure, low in cost and high in stability.

Description

technical field [0001] The invention relates to an engine fuel supply system, in particular to a system for supplying fuel to an engine from a saddle-shaped gasoline fuel tank. Background technique [0002] At present, the "saddle-shaped" fuel tank design is becoming more and more common. In order to ensure that the oil in the main and auxiliary fuel tanks in the saddle-shaped fuel tank can participate in the engine fuel supply system, many designs use the siphon principle to absorb the fuel in the auxiliary fuel tank. into the main fuel tank. [0003] In the U.S. invention patent with the authorization announcement number: US6,871,640B2, application date: March 18, 2003, and the invention name "SADDLE TANK SIPHON PRIMER", the fuel pump is used to pump the siphon mechanism (pick-up mechanism) in the engine and auxiliary fuel tank at the same time. ) to supply oil, and then use the siphon pipe to connect the siphon mechanism and the main oil tank, and suck the oil in the aux...

AI Technical Summary

Problems solved by technology

This device does not need to add oil pipes for the fuel pump, but this device needs to set up a mixing zone, which still has the problems of complex structure and high cost, and the oil supply mechanism still has the problem of simultaneously supplying pressure for the gasoline injection system and the injection pump

[0005] The above inventions all considered the siphon pressure problem of gasoline and diesel oil at the same time, but because gasoline and diesel oil have many differences in physical properties such as viscosity coefficient, and as the application of direct injection engines becomes more and more common, gasoline will also go through The high-pressure oil pump enters the high-pressure oil rail after being pressurized, so there is still room for further improvement for the oil supply system of the gasoline engine

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