EP3111076A1 - Fuel supply system for internal combustion engines - Google Patents

Fuel supply system for internal combustion engines

Info

Publication number
EP3111076A1
EP3111076A1 EP15710607.1A EP15710607A EP3111076A1 EP 3111076 A1 EP3111076 A1 EP 3111076A1 EP 15710607 A EP15710607 A EP 15710607A EP 3111076 A1 EP3111076 A1 EP 3111076A1
Authority
EP
European Patent Office
Prior art keywords
fuel
supply system
internal combustion
combustion engines
lpg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP15710607.1A
Other languages
German (de)
French (fr)
Inventor
Krzysztof HANKE
Piotr CZEKALSKI
Pawel CZEKALSKI
Jacek Marenin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Certools Spolka Jawna Piotr Czekalski Krzysztof Hanke
Original Assignee
Certools Spolka Jawna Piotr Czekalski Krzysztof Hanke
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Certools Spolka Jawna Piotr Czekalski Krzysztof Hanke filed Critical Certools Spolka Jawna Piotr Czekalski Krzysztof Hanke
Publication of EP3111076A1 publication Critical patent/EP3111076A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F02D19/0694—Injectors operating with a plurality of fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0613—Switch-over from one fuel to another
    • F02D19/0621—Purging of the fuel system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0626—Measuring or estimating parameters related to the fuel supply system
    • F02D19/0628—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
    • F02D19/0647—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the fuel supply system for internal combustion engines remains the subject of the invention.
  • supplying LPG to engines is executed by means of the same electronic control unit as well as the same original petrol/Diesel oil supplying system by placing a connector pipe on the high pressure pump, which prevents an LPG powered engine from gasing through an excess fluid return line and closes the supply of petrol or Diesel oil to the high pressure pump while the engine operates on LPG , which is then supplied to the pump in liquid state.
  • the description of a Polish patent PL 210816 presents a solution in which electric energy is transferred from a liquid fuel injecting system controller to a gas fuel injector .
  • Engine fuel supply system possesses the fuel type switch (1), which enables an operator to make a choice between LPG and petrol/Diesel oil.
  • Switch number 1 is placed before a pump (2) which supplies a selected type of fuel to the high pressure pump (3), from where the engine is fed directly.
  • the return line extracts from the high pressure pump (3) and it houses a valve (4) placed directly behind the pump number 3.
  • the valve number 4 receives the controlling impulses from sensors number 8 and 9.
  • Sensor number 8 measures the fuel pressure inside the return line while sensor number 9 measures the fuel temperature there. When there is LPG fuel inside the supply system, the pressure value and the temperature are proper. The parameters are different in case of petrol/Diesel oil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The fuel supply system for internal combustion engines, feeding alternatively LPG and petrol/Diesel oil, is equipped with the fuel type switch (1) located before pump number 2. The controllable valve number 4 is placed behind the high pressure pump (3). It cuts off the fuel return to the tank once the fuel type has been switched.

Description

Fuel supply system for internal combustion engines
The fuel supply system for internal combustion engines remains the subject of the invention.
Due to high prices for methane-based fuels and the constantly increasing atmosphere pollution levels , especially affecting extensive urban areas, there appears the growing demand for such cars which can be powered not only with petrol/diesel oil but with LPG as well. The systems to feed the internal combustion engines with evaporated gas fuels, e.g. LPG, are widely known and used. Their task is to precisely measure and supply , inject, a doze of fuel into the engine intake system. This operation is executed through a high pressure pump , to which fuel is supplied from a fuel tank. The account of the invention EP 2250361 describes a way to supply LPG to petrol engines and Diesel engines with direct injection. According to the aforementioned invention, supplying LPG to engines is executed by means of the same electronic control unit as well as the same original petrol/Diesel oil supplying system by placing a connector pipe on the high pressure pump, which prevents an LPG powered engine from gasing through an excess fluid return line and closes the supply of petrol or Diesel oil to the high pressure pump while the engine operates on LPG , which is then supplied to the pump in liquid state. The description of a Polish patent PL 210816 presents a solution in which electric energy is transferred from a liquid fuel injecting system controller to a gas fuel injector . It is also common knowledge that one of the solutions enables to supply petrol/Diesel oil and LPG alternatively on a line coming out of an LPG tank which is characterised by a higher pressure value than the one in case of a petrol/Diesel oil tank which was possible through the application of an additional fuel pump. The pump was supposed to create higher pressure value for petrol/Diesel oil compared to working pressure for LPG at the pump outlet.
The aforementioned solutions are highly complex as far as their construction is concerned, which contributes to their high manufacturing costs. Complicated construction stems from the fact that high pressure occurs inside the fuel supply system, which remains a disadvantage of the solution.
According to the invention, the fuel supply system for internal combustion engines is equipped with a fuel type switch placed at least before one of the pumps supplying fuel to the high pressure pump, behind which a valve receiving the impulses from a fuel pressure sensor and a fuel temperature sensor is placed. The valve is mounted on a return line connecting the high pressure pump with a connecting pipe supplying fuel to a damping nozzle initiated by the valve.
In line with the invention the system solves the problem of supplying fuel with the pressure occurring inside the LPG tank , which is noticeably lower than applied so far and hence makes it possible to use one system to supply an engine with selected type of fuel ( LPG, petrol/ Diesel oil).
The subject of the invention has been presented in the figures to demonstrate exemplary manufacturing. The figure presents the schematic drawing of the engine fuel supply system (fig. 1) and the cross-section of the multivalve ( fig. 2).
Engine fuel supply system possesses the fuel type switch (1), which enables an operator to make a choice between LPG and petrol/Diesel oil. Switch number 1 is placed before a pump (2) which supplies a selected type of fuel to the high pressure pump (3), from where the engine is fed directly. The return line extracts from the high pressure pump (3) and it houses a valve (4) placed directly behind the pump number 3. The valve number 4 receives the controlling impulses from sensors number 8 and 9. Sensor number 8 measures the fuel pressure inside the return line while sensor number 9 measures the fuel temperature there. When there is LPG fuel inside the supply system, the pressure value and the temperature are proper. The parameters are different in case of petrol/Diesel oil. By selecting a proper damping nozzle (6) and controlling the capacity of pump number 2, we achieve the demanded pressure and flow rate. The return line is connected by means of connector pipe (5) supplying the fuel to the damping nozzle (6), activated by valve number 7. In case of supplying the engine with LPG fuel and switching into petrol/Diesel oil, valve number 7 opens the flow that circumvents the damping nozzle (6). LPG fuel inside the system is emptied in no time. Once petrol /Diesel oil has reached pump number 3, sensors number 8 and 9 read it and transfer the information to valve number 4 which closes the return line and cuts off the fuel return to LPG tank. When LPG fuel is reselected , valve number 4 opens the return line and valve number 7 forces the flow through the damping nozzle (6)

Claims

Patent reservations.
The fuel supply system for internal combustion engines equipped with pumps, multivalve and valves possesses the fuel type switch (1) placed before at least one pump (2) that supplies fuel to the high pressure pump (3), behind which valve number 4 is placed. It receives the fuel pressure measurements impulses from sensor number 8 as well as the fuel temperature impulses from sensor number 9. Valve number 4 is contained on the return line connecting the high pressure pump (3) and the connector pipe (5) supplying the fuel to the damping nozzle (6). The nozzle is activated by valve number 7
EP15710607.1A 2014-02-28 2015-02-13 Fuel supply system for internal combustion engines Ceased EP3111076A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL407361A PL222798B1 (en) 2014-02-28 2014-02-28 System feeding combustion engines with fuel
PCT/PL2015/000020 WO2015130182A1 (en) 2014-02-28 2015-02-13 Fuel supply system for internal combustion engines

Publications (1)

Publication Number Publication Date
EP3111076A1 true EP3111076A1 (en) 2017-01-04

Family

ID=52686432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15710607.1A Ceased EP3111076A1 (en) 2014-02-28 2015-02-13 Fuel supply system for internal combustion engines

Country Status (4)

Country Link
EP (1) EP3111076A1 (en)
KR (1) KR102202003B1 (en)
PL (1) PL222798B1 (en)
WO (1) WO2015130182A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL229707B1 (en) * 2016-09-08 2018-08-31 Lpgtech Spolka Z Ograniczona Odpowiedzialnoscia Bifuel direct injection feeding system of combustion engines
KR101938259B1 (en) * 2017-05-15 2019-01-14 김성훈 Direct injection apparatus of bi-fuel
PL425822A1 (en) * 2018-06-05 2019-12-16 Certools Spółka Jawna Piotr Czekalski, Krzysztof Hanke System feeding combustion engines with fuel, alternately with petrol/diesel oil or LPG gas
KR102196129B1 (en) 2019-12-27 2020-12-29 김성훈 Direct injection apparatus of bi-fuel having dual injector

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL125412B1 (en) 1978-11-09 1983-05-31 B St I P Przemyslowych Urzadze Remote measurement,signalling and control system
DE19539883B4 (en) * 1995-05-26 2011-06-01 Robert Bosch Gmbh Fuel supply system and method for operating an internal combustion engine
JP2007177697A (en) * 2005-12-28 2007-07-12 Nissan Diesel Motor Co Ltd Fuel device of liquefied gas engine
DE102006001616A1 (en) * 2006-01-11 2007-07-12 Winkelmann, Karlheinrich, Dipl.-Ing. (TH) Spark ignited piston internal combustion engine operating method for motor vehicle, involves pumping reserve fuel from fuel tank into gas tank, where fuel tank serves as reserve tank for petrol or normal pressure liquid fuel such as ethanol
ITRM20080065A1 (en) 2008-02-06 2009-08-07 Icomet S P A LPG / AMMONIA POWER SUPPLY FOR DIRECT FUEL INJECTION ENGINES OR DIESEL
ATE549498T1 (en) * 2008-07-07 2012-03-15 Impco Technologies B V DUAL FUEL INJECTION SYSTEM AND MOTOR VEHICLE HAVING SUCH AN INJECTION SYSTEM
NL2006992C2 (en) * 2011-06-24 2013-01-02 Indopar B V Method of switching from a liquefied gas fuel to a liquid fuel being provided to a direct injection combustion engine, and direct injection bi-fuel system for such an engine.
JP5838712B2 (en) * 2011-10-14 2016-01-06 いすゞ自動車株式会社 Method for starting engine using dimethyl ether fuel and engine using dimethyl ether fuel

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2015130182A1 *

Also Published As

Publication number Publication date
KR102202003B1 (en) 2021-01-13
PL222798B1 (en) 2016-09-30
WO2015130182A1 (en) 2015-09-03
PL407361A1 (en) 2015-08-31
KR20160130416A (en) 2016-11-11

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