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Fuel switching control method for bi-fuel vehicle

A dual-use fuel and control method technology, applied in liquid fuel feeder, electrical control, engine control and other directions, can solve problems such as engine flameout, and achieve the effect of improving sales and reducing costs

Inactive Publication Date: 2016-12-07
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the case of mono-fuel vehicles, the driver may continue to drive the vehicle even after the driver perceives the low fuel warning, so that there is a high risk of the engine stalling due to running out of fuel

Method used

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  • Fuel switching control method for bi-fuel vehicle

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Embodiment Construction

[0027] Hereinafter, a fuel switching control method for a dual-fuel vehicle according to an embodiment of the present inventive concept will be described with reference to the accompanying drawings.

[0028] figure 1 is a flowchart illustrating a fuel switching control method for a dual-fuel vehicle according to an embodiment of the present inventive concept. The fuel switching control method for a dual-fuel vehicle according to an embodiment of the present invention concept includes: a remaining fuel amount measuring step (S100), which measures when the first fuel mode is selected and the condition for using the first fuel is satisfied. The level of the first fuel. The fuel amount comparing step (S300) checks whether the amount of the first fuel measured in the remaining fuel amount measuring step (S100) is lower than a first reference value. After the fuel amount comparing step (S300), the fuel injection amount comparing step (S500) calculates the accumulated amount of the...

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Abstract

A fuel switching control method for a bi-fuel vehicle includes a residual fuel amount measurement step measuring a first fuel level. A fuel amount comparison step checks whether the measured first fuel amount is lower than a first reference value. A fuel injection amount comparison step checks whether an accumulated amount of injected fuel is lower than a second reference value. A mileage comparison step checks whether the accumulated mileage is lower than a third reference value. A pressure comparison step checks whether pressures in a first fuel supply rail and first fuel tank are higher than fourth and fifth reference values, respectively. A pressure variation comparison step checks whether pressure variations in the first fuel supply rail and first fuel tank are lower than sixth and seventh reference values, respectively. A second fuel mode drive step switches from a first fuel mode to a second fuel mode.

Description

technical field [0001] The present disclosure relates to a fuel switching control method for a dual-fuel vehicle that allows the vehicle to be driven using a lower-cost fuel among two or more fuels. Background technique [0002] In vehicles using more than two fuels, the driver can manually select the fuel, or the fuel being used can be automatically changed to another fuel depending on driving conditions. [0003] For example, in the case of a liquefied petroleum gas (LPG)-gasoline dual-fuel vehicle, parts such as a carburetor, a mixer, and an LPG cartridge are additionally installed to use the LPG. Thus, the driver can choose between using gasoline or LPG. [0004] In the case of mono-fuel vehicles, the driver may continue to drive the vehicle even after the driver perceives a low fuel warning, so that there is a high risk of the engine stalling due to running out of fuel. On the other hand, drivers of dual-fuel vehicles are able to fully consume the cheaper LPG fuel unt...

Claims

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Application Information

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IPC IPC(8): F02D19/06
CPCF02D41/0025F02D2200/0602F02D2200/0625F02D19/0615F02D19/0628F02D19/0647F02D19/0665Y02T10/30F02D19/06F02D41/30F02D45/00F02M37/00
Inventor 徐有珍
Owner HYUNDAI MOTOR CO LTD