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Fuel supply device and fuel supply method for dual fuel engine

A fuel supply device and a fuel supply technology, which are applied to fuel injection devices, liquid fuel feeders, fuel injection pumps, etc., can solve problems such as difficulty in dealing with changes in liquefied gas fuel pressure

Active Publication Date: 2016-08-17
KEFICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Of course, in order to increase the supply pressure of liquid fuel, additional devices can also be provided, but there is a problem that the structure of supplying liquid fuel at a constant pressure is difficult to deal with pressure changes of liquefied gas fuel with variable pressure

Method used

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  • Fuel supply device and fuel supply method for dual fuel engine
  • Fuel supply device and fuel supply method for dual fuel engine
  • Fuel supply device and fuel supply method for dual fuel engine

Examples

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Embodiment Construction

[0024] A fuel supply device for a dual-fuel engine according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0025] figure 1 is a schematic diagram showing a fuel supply device for a dual-fuel engine according to an embodiment of the present invention, figure 2 is expressed in figure 1 In the fuel supply device shown in , a schematic diagram of the state where the fuel supply is switched from liquefied gas fuel to liquid fuel, image 3 is expressed in figure 1 A schematic diagram of the process of preparing liquid fuel for pressurization of the fuel supply device shown in .

[0026] like Figure 1 to Figure 3 As shown, the fuel supply device 1 for a dual-fuel engine according to an embodiment of the present invention includes: a fuel supply flow path 101, which is connected to the engine 901; a liquefied gas fuel supply flow path 203, which is connected to the fuel supply flow path 101, so that The liquefied gas fue...

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PUM

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Abstract

An apparatus and method for supplying fuels of a bi-fuel engine, whereby a supply pressure of a liquid fuel is increased by using a high pressure of a supplied liquefied gas fuel so that the liquid fuel can be smoothly supplied to the bi-fuel engine, the apparatus including: a liquefied gas fuel supply flow passage connected to a fuel supply flow passage; a liquid fuel supply flow passage connected to the fuel supply flow passage; a fuel selection valve that allows the liquefied gas fuel supply flow passage or the liquid fuel supply flow passage to be selectively open; a first chamber in which the liquid fuel supplied to the liquid fuel supply flow passage is stored; and a pressurizing unit that operates so that a volume of an internal space of the first chamber can be reduced and that pressurizes the liquid fuel.

Description

technical field [0001] The present invention relates to a fuel supply device and fuel supply method for a dual-fuel engine that smoothly supplies the liquid fuel to the engine by increasing the supply pressure of the liquid fuel by utilizing the high pressure of the liquefied gas fuel. Background technique [0002] The types of engines that use dual fuel include gasoline-liquefied petroleum gas (Gasoline-LPG) or gasoline-compressed natural gas (Gasoline-CNG) dual-fuel (Bi-fuel) engines. [0003] A vehicle equipped with a dual-fuel engine is provided with a fuel supply device that switches the supply of fuel to the engine under the control of a control unit that diagnoses the driver's operation or the state of the vehicle. [0004] As an example of such a fuel supply device, there can be mentioned "dual fuel device for direct injection internal combustion engine" disclosed in Korean Laid-Open Patent No. 10-2010-0128319. [0005] The device disclosed in the above-mentioned pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D19/06F02D41/04F02M37/00F02M59/44
CPCF02D19/0676F02D41/0025F02D41/0027F02D41/3094Y02T10/30
Inventor 柳升铉田炳春
Owner KEFICO
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