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Vehicle fuel oil evaporation control system and method thereof

A control system and control method technology, applied in the direction of charging system, adding non-fuel substances to fuel, engine components, etc., can solve the problem of unsolved fuel vapor control and recycling, technical solution applicability limitations, technical solution imperfections, etc. problems, to achieve and control the pollution of the environment, the structure is simple, and the design is reasonable

Active Publication Date: 2012-10-24
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this patent does not solve the problem related to the control and recycling of fuel vapor generated by different fuels for automobile engines using multiple fuels, nor does it solve the conditions under which the fuel vapor collection oil circuit is opened, and at what Putting the recovered fuel oil into use under such conditions, and what kind of devices are used to carry out the above-mentioned control and other issues
Thereby, the applicability of its technical solution is limited, and its technical solution is also imperfect

Method used

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  • Vehicle fuel oil evaporation control system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The fuel vapor pipe 7 communicates with the methanol fuel tank 2 through the methanol tank gravity valve 8 and the methanol tank gravity valve 9; the fuel vapor pipe 7 communicates with the gasoline fuel tank 2 through the gasoline tank gravity valve 6 .

[0031] This embodiment has solved under what condition, the problem that fuel vapor begins to flow to gac canister 10, namely at higher temperature, make the pressure of the fuel vapor of gasoline fuel tank 1 and methanol fuel tank 2 exceed methanol tank gravity valve 8, The setting value of methanol tank gravity valve 9 and gasoline tank gravity valve 6, these gravity valves can be opened automatically, and high-pressure fuel vapor flows to activated carbon canister 10 through fuel vapor pipe 7. Therefore, the opening pressure of the above-mentioned gravity valve can be set according to the needs of different fuels and different vehicle models.

Embodiment 2

[0033] The pipeline between the activated carbon canister 10 and the engine intake pipe 12 of the vehicle fuel evaporation control system is the canister output pipeline 13, and the canister solenoid valve 4 is arranged on the pipeline, and the canister solenoid valve 4 communicates with the engine through the signal line. The electronic control unit 11 (ECU) is connected, and the engine electronic control unit 11 (ECU) sends an open or close signal to the canister solenoid valve 4 .

[0034] The setting of the above structure makes the fuel evaporation control system coordinate with the overall working state of the engine, and its work is more reliable, its performance is better, and its efficiency is higher. Whether the canister output pipeline 13 is open or not is controlled by the ECU of the engine and implemented by the opening and closing of the canister solenoid valve 4 .

Embodiment 3

[0036]The activated carbon canister 10 is provided with a canister atmospheric through hole 3 .

[0037] This structure enables the adsorption and recovery of vapor to form different circuits according to different conditions:

[0038] If the canister solenoid valve 4 is closed and each gravity valve is opened, the high-pressure oil vapor is filtered and the clean gas is discharged from the canister atmospheric hole 3;

[0039] If the canister solenoid valve 4 is opened and the gravity valves are closed, the air will be sucked from the atmospheric hole 3 of the canister, and the fuel adsorbed on the activated carbon particles will be washed away, and will be sucked into the engine through the canister output pipeline 13 in the form of oil and gas. combustion in the cylinder;

[0040] If the canister electromagnetic valve 4 and each gravity valve are both open, the gas flow direction at the canister atmospheric hole 3 is determined according to the difference in the flow rate ...

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Abstract

The invention belongs to the automobile structure field and discloses an automobile fuel evaporation control system; a gasoline fuel tank (1) and a methanol fuel tank (2) are connected with an active carbon tank (10) through a fuel vapor tube (7); the fuel vapor tube (7) is communicated with the methanol fuel tank (2) through methanol tank gravity valves (8, 9) and communicated with the gasoline fuel tank (1) through a gasoline tank gravity valve (6). The invention also provides a fuel evaporation control method adopted by the control system. When the technical proposal is adopted, the gasoline vapor and the methanol vapor are effectively avoided from polluting the environment; the oil vapor is recovered to have the oil-saving effect and reduce the oil consumption. The automobile fuel evaporation control system and the control method have the advantages of simple structure, reasonable design, less pipeline connection, low cost, convenient application, mounting and being applicable to the fuel evaporation discharge control of the flexible fuel automobiles.

Description

technical field [0001] The invention belongs to the technical field of automobile structure, and relates to its engine fuel supply system, more specifically, the invention relates to a vehicle fuel evaporation control system. In addition, the present invention also relates to the control method adopted by the system. Background technique [0002] With the depletion of petroleum energy reserves and the increase in oil prices, the automotive industry faces enormous challenges. It has become a trend to look for alternative energy sources and adopt highly economical, renewable and clean energy sources while meeting emission and performance requirements. Major auto companies have already started to take action. Methanol has the advantages of wide sources of raw materials, high fuel safety factor, high octane number, good anti-knock performance, and low emission pollution, etc., and is gradually being promoted. [0003] Fuel evaporation pollutants refer to the total amount of h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M25/08
Inventor 申定杰黄波
Owner CHERY AUTOMOBILE CO LTD
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