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Internal-pressure-adjusting fuel system and control method

A fuel system and internal pressure technology, applied in fuel injection control, charging system, electrical control, etc., can solve the problems of carbon canister not being desorbed, fuel tank weight, environmental pollution, etc. The effect of reducing and avoiding environmental pollution

Active Publication Date: 2015-12-02
YAPP AUTOMOTIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the fuel system in the prior art has the following problems: 1) The entire fuel system has a complex structure and needs to withstand relatively high pressure; 2) Compared with the weight of the entire fuel tank, the cost is relatively high; 3) The carbon tank cannot be desorbed for a long time, Causes great pollution to the environment and wastes energy

Method used

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  • Internal-pressure-adjusting fuel system and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 : see figure 1 , the fuel system for adjusting the internal pressure, the fuel system includes ECU1, engine 3, battery 6, carbon pump 8, lock cover 10 and fuel tank assembly 9, the ECU1 is connected to the battery 6, the engine 3 and the carbon pump 8 through lines, The carbon pump 8 is connected to the fuel tank assembly 9 through a pipeline, the lock cover 10 is connected to the fuel tank assembly 9 through a pipeline, and the fuel system further includes a semiconductor refrigeration / heater 7, which is provided with On the fuel tank assembly 9, it is connected to the battery 6 through a line, and is connected to the carbon pump 8 through a pipeline; the fuel system also includes an isolation valve 11, and the isolation valve 11 is arranged between the carbon tank 8 and the fuel tank assembly 9. A pressure sensor 12 is arranged on the oil tank assembly; an exhaust valve 13 is arranged on the oil tank assembly. The fuel system also includes a fueling signa...

Embodiment 2

[0019] Example 2 : see figure 1 , as an improvement of the present invention, the semiconductor refrigeration / heater 7 is composed of two ceramic sheets with N-type and P-type semiconductor materials in the middle, wherein the semiconductor material is bismuth telluride. The semiconductor refrigeration / heater can be used for both cooling and heating. The working operation uses DC current, and the car battery generates DC power. By changing the polarity of the DC current, it is decided to realize cooling or heating on the same refrigerator; A monolithic refrigerator consists of two ceramic sheets with N-type and P-type semiconductor materials in the middle. This semiconductor element is connected in series by a plurality of monolithic refrigerators in the circuit. When the current passes from the N-level to the P-level, the working end absorbs heat to achieve the cooling effect; when the current passes from the P-level to the N-level, the working end releases heat to achieve ...

Embodiment 3

[0020] Example 3 : see figure 1 , as an improvement of the present invention, the temperature range of the semiconductor refrigeration / heater 7 is -40~80 degrees, and its volume is 300mm*300mm*300mm. The highest temperature of the semiconductor refrigeration / heater can reach +80 degrees, and the lowest temperature can reach -40 degrees, which fully meets the desorption and adsorption performance of the carbon canister; Good cooling / heating effect. The thermal inertia of the semiconductor cooler is very small, and the cooling and heating time is very fast. Under the condition of good heat dissipation at the hot end and no load at the cold end, the refrigerator can reach the maximum temperature difference in less than one minute, which can reach about 40 degrees. . In addition, the semiconductor refrigeration / heater is small in size, light in weight, does not require any refrigerant, and has a long service life, which fully meets the working conditions of auto parts.

[002...

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PUM

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Abstract

The invention relates to an internal-pressure-adjusting fuel system. The internal-pressure-adjusting fuel system is characterized by comprising an ECU, an engine, a battery, a carbon pump, a lock cover and an oil tank assembly; the ECU is connected with the battery, the engine and the carbon pump through lines, the carbon pump is connected with the oil tank assembly through a pipe, and the lock cover is connected with the oil tank assembly through a pipe; the fuel system further comprises a semiconductor refrigerating / heating device, and the semiconductor refrigerating / heating device is arranged on the oil tank assembly, connected with the battery through a line and connected with the carbon pump through a pipe. According to the technical scheme, the pressure inside an oil tank can be adjusted, the whole structure is simple, design is ingenious, the oil tank is small in weight, cost is low, and outward emission of hydrocarbon steam is effectively suppressed.

Description

technical field [0001] The invention relates to a fuel system for regulating internal pressure, in particular to a fuel system for regulating internal pressure and a control method thereof, and belongs to the technical field of fuel tank manufacturing. Background technique [0002] With the continuous development of electric vehicles, there are more and more hybrid vehicles on the market. Hybrid vehicles are mainly driven by other energy sources such as batteries. , but the battery is usually repeatedly charged for driving the car. Therefore, the car engine usually does not work, and the fuel in the fuel tank is not used for a long time. The problem caused is that the fuel in the fuel tank, especially gasoline, continues to volatilize into carbon tank, and the engine has not been used for a long time, so the carbon tank cannot be desorbed for a long time. When the carbon tank absorbs a certain amount of hydrocarbon vapor, the hydrocarbon vapor will continue to overflow to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/00F02M37/20F02M25/08F02M31/00F02D41/00
Inventor 孙岩姜林刘亮朱志勇翁益明
Owner YAPP AUTOMOTIVE PARTS
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