WO2009020353A1 - Système de moteur à refroidisseur intermédiaire et turbocompresseur utilisant du gaz naturel - Google Patents

Système de moteur à refroidisseur intermédiaire et turbocompresseur utilisant du gaz naturel Download PDF

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Publication number
WO2009020353A1
WO2009020353A1 PCT/KR2008/004578 KR2008004578W WO2009020353A1 WO 2009020353 A1 WO2009020353 A1 WO 2009020353A1 KR 2008004578 W KR2008004578 W KR 2008004578W WO 2009020353 A1 WO2009020353 A1 WO 2009020353A1
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WO
WIPO (PCT)
Prior art keywords
engine
pressure
air
gas
turbo charger
Prior art date
Application number
PCT/KR2008/004578
Other languages
English (en)
Inventor
Jason Young Cho
Jung Pil Lee
Sang Jin Park
Original Assignee
Nevico Co., Ltd.
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 Nevico Co., Ltd. filed Critical Nevico Co., Ltd.
Publication of WO2009020353A1 publication Critical patent/WO2009020353A1/fr

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/029Arrangement on engines or vehicle bodies; Conversion to gaseous fuel supply systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04Cooling of air intake supply
    • F02B29/0406Layout of the intake air cooling or coolant circuit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239Pressure or flow regulators therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0215Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248Injectors
    • F02M21/0278Port fuel injectors for single or multipoint injection into the air intake system
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/30Use of alternative fuels, e.g. biofuels

Definitions

  • the present invention relates to a turbo charger intercooler engine system using natural gas capable of naturally supplying fuel according to an air-fuel ratio of an air- fuel mixture supplied into the combustion chamber.
  • a turbo charger is an apparatus which collects pressure and heat energy of exhaust gas of an internal combustion engine (hereinafter, simply referred to as an "engine") and compresses air introduced into the engine using the collected pressure and heat energy to improve performance of the engine.
  • engine an internal combustion engine
  • a general turbo charger includes a turbine wheel 1, a compressor wheel 2 and a waste gate valve Ia.
  • the turbine wheel 1 of the turbo charger is rotated by exhaust gas discharged through an exhaust manifold 3 of an engine E.
  • the compressor wheel 2 connected to the turbine wheel 1 through a connection shaft, is rotated.
  • the compressor wheel 2 is installed in an intake manifold 4 of the engine E. Air introduced into the engine E is compressed by the rotation of the compressor wheel 2.
  • high-density air can be supplied into a combustion chamber of the engine without directly using power of the engine. Since the high-density air can be supplied into the combustion chamber by the turbo charger, the amount of air supplied into the combustion chamber increases and a fuel injection rate also increases. Consequently, power output increases by the increased fuel injection rate.
  • the turbo charger is mounted in a vehicle, there are effects of reducing fuel, reducing smoke and noise, increasing power output per weight, improving cooling performance of the engine, and increasing power output in a high mountain.
  • the turbo charger sends fresh air having a relatively high temperature (about 150 0 C or more, 200 0 C or more in a small size) than an atmospheric temperature of 25 0 C into the combustion chamber of the engine.
  • an intercooler 5 is installed in a line connecting the compressor wheel 2 and the intake manifold 4.
  • air should be supplied to burn the fuel pumped by a fuel pump.
  • the air is purified while passing through an air purifier and is mixed with the fuel into a mixed gas.
  • the mixed gas is burned to generate power.
  • the air and fuel should be mixed at an appropriate ratio to burn the fuel. If the fuel or air is excessive or sufficient, that is, if an air-fuel mixture is rich or lean, incomplete combustion occurs.
  • a vaporizer is employed to supply a mixed gas at an appropriate ratio according to the operation state of the engine.
  • the turbine wheel 1 and the compressor wheel 2 are connected to each other by the same shaft.
  • inlet air is compressed and a supercharged mixture is supplied into the combustion chamber by a throttle valve to be described later through the intake manifold 4. Consequently, higher power output occurs in an explosion process.
  • MAP Electronic Control Mtdule
  • a naturally-aspirated engine increases the amount of a mixture to increase a total exhaust amount, thereby increasing power output.
  • the turbo charger increases the amount of a mixture and power output without changing the total exhaust amount.
  • the Electronic Control Mtdule controls an entire operation of the vehicle including an operation of the engine.
  • the ECM also controls an injector 17 according to an operation time preset by a program so as to supply fuel for optimal combustion based on the amount of air applied from the intake manifold 4.
  • CNG Compressed Natural Gas
  • a charged gas is stored in a gas tank 12 through a receptacle 11.
  • the ECM opens a high-pressure cut-off valve 14 connected thereto.
  • the high- pressure gas is discharged from the gas tank 12 and impurities included in the gas are filtered through a fuel filter 15.
  • the gas flows into a gas pressure regulator 16 through the high-pressure cut-off valve 14.
  • the high-pressure gas is converted into a low-pressure gas by the gas pressure regulator 16.
  • the low-pressure gas flows into the injector 17 to be sprayed into a mixer 18 in the intake manifold 4.
  • the mixer 18 the gas is mixed with air compressed by the compressor wheel 2 and cooled by an in- tercooler 5. Then, the mixed gas flows into the combustion chamber of the engine through a throttle valve 19.
  • a non-described reference numeral ICM denotes an ignition control module which ignites an ignition plug 20.
  • the Electronic Control Mtdule (ECM) is connected to the high-pressure cut-off valve 14, the gas pressure regulator 16, the injector 17 and the like to control them.
  • the Electronic Control Mtdule (ECM) controls an entire operation of the vehicle including an operation of the engine.
  • the ECM also controls the injector 17 according to an operation time preset by a program so as to supply fuel for optimal combustion based on the amount of air applied from the intake manifold 4.
  • fuel that is, gas is supplied in the engine
  • the fuel is com- pulsorily sprayed through the injector 17 at a high pressure under control of the Electronic Control Mtdule (ECM).
  • the Electronic Control Mtdule controls a fuel spray amount to adjust a mixture ratio. Since the fuel is sprayed by the ECM, there are too many parts, input sensors and output devices, thereby increasing the manufacturing costs.
  • the conventional Turbo Charger (TC) and Turbo Charger In- tercooler (TCI) diesel vehicle are retrofitted in the above-mentioned way. Accordingly, high-priced parts and a lot of cost are required and a remodeling process is complicated. Disclosure of Invention Technical Problem
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a turbo charger intercooler engine system using natural gas capable of naturally supplying fuel according to an air-fuel ratio of an air-fuel mixture supplied into the combustion chamber and applicable to both Compressed Natural Gas (CNG) and Liquefied Natural Gas (LNG) fuel supply systems.
  • CNG Compressed Natural Gas
  • LNG Liquefied Natural Gas
  • a turbo charger intercooler engine system using natural gas comprising: a naturally- aspirated pressure regulator installed between an intake manifold of an engine and a mixer such that boost-pressure air introduced from the intake manifold is mixed with gas controlled to have a low pressure from a high pressure to be sprayed into the mixer.
  • inlet air introduced into the combustion chamber from the turbo charger intercooler engine is introduced into the naturally- aspirated pressure regulator.
  • a high-pressure air is introduced into the naturally- aspirated pressure regulator is controlled at a low pressure to naturally flow into the mixer. Accordingly, compared to a conventional case wherein fuel is compulsorily sprayed through the injector under control of the electronic control module, a turbo intercooler engine can be simply remodeled into a turbo charger intercooler engine using natural gas at low cost without parts such as input and output devices.
  • FIG. 1 illustrates a conventional turbo charger intercooler engine system using natural gas
  • FIG. 2 illustrates a turbo charger intercooler engine system using natural gas according to the present invention
  • FIG. 3 is a cross-sectional view showing a naturally-aspirated pressure regulator according to the present invention. Best Mode for Carrying Out the Invention
  • FIG. 2 illustrates a turbo charger intercooler engine system using natural gas according to the present invention.
  • Fig. 3 is a cross-sectional view showing a naturally- aspirated pressure regulator according to the present invention.
  • the turbo charger intercooler engine system using natural gas is obtained by retrofitting a diesel engine, i.e., a turbo charger intercooler engine using diesel oil, into a natural gas engine using compressed natural gas.
  • a compression ratio of the engine should be adjusted.
  • the compression ratio of the diesel engine is 18:1 and the compression ratio of the natural gas engine ranges from 10.5:1 to 11:1. Accordingly, a piston is cut off to enlarge the volume of the combustion chamber and a compression ignition method of the diesel engine should be changed to a flame ignition method.
  • an ignition plug is inserted therein.
  • a diesel injection pump is removed and a wheel sprocket capable of reading a rotation number is installed at that position and an RPM sensor is attached thereto.
  • a Manifold Air Pressure (MAP) sensor capable of detecting the amount of air is installed at an intake manifold 4.
  • MAP Manifold Air Pressure
  • the turbo charger intercooler engine system using natural gas includes a turbine wheel 1 which is rotated by exhaust gas discharged through an exhaust manifold 3 connected to an exhaust port of the combustion chamber of an engine E, and a compressor wheel 2 which is connectedly rotated by a connection shaft of the turbine wheel 1 and is installed in the intake manifold 4 of the engine E to compress air introduced into the engine E by the rotation.
  • the high-density air compressed by the rotation of the compressor wheel 2 can be supplied into the combustion chamber of the engine though the intake manifold 4 with low power of the engine.
  • An intercooler 5 is installed in a line connecting the compressor wheel 2 and the intake manifold 4. In this case, fresh air having a relatively high temperature (about 150 0 C or more, 200 0 C or more in a small size) than an atmospheric temperature of 25 0C is supplied into the combustion chamber of the engine. Accordingly, the intercooler 5 is installed to prevent the supply of high-temperature air.
  • a mixer 18 is installed at the intake manifold 4 to mix cooled air supplied from the intercooler 5 with &el, that is, gas.
  • a naturally-aspirated pressure regulator 50 is installed between the intake manifold 4 and the mixer IS
  • a boost-pressure inlet 62 is formed at one side of the naturally- aspirated pressure regulator 50 to introduce boost- pressure air in the intake manifold 4 through a boost-pressure inlet pipe 61.
  • a gas discharge pipe 63 is connected between the naturally-aspirated pressure regulator 50 and the mixer 18.
  • a gas inlet pipe 64 is connected to the other side of the naturally- aspirated pressure regulator 50 to introduce gas from a gas tank 12 through a high-pressure cut-off valve 14.
  • the boost-pressure inlet pipe 61 is manufactured to have an inner diameter of 3 to 5 mm. It is preferable to manufacture the gas discharge pipe 63 such that a distance between the gas discharge port and the mixer 18 is 200 to 500 mm.
  • the gas introduced through the high- pressure cut-off valve 14 has a pressure of about 200 bar.
  • the gas is introduced into a gas inlet port 64a through the gas inlet pipe 64 and is stored in a high-pressure space H.
  • the high-pressure gas is controlled to have a low pressure (4 - 6 bar) by a first pressure controller 52 and is stored in an intermediate-pressure space M
  • the gas of 4 ⁇ 6 bar in the intermediate-pressure space M is controlled again at a pressure of about 1 bar by a second pressure controller 53 and is stored in a low-pressure space L.
  • the pressure of air flowing in the intake manifold 4 is a boost pressure, that is, a positive pressure.
  • boost pressure is supplied into the boost-pressure inlet 62, the diaphragm 51 is pushed and a plunger 51a connected thereto is moved down. Accordingly, the gas in the low-pressure space L is discharged through the gas discharge pipe 63 connected to the gas discharge port.

Abstract

La présente invention concerne un système de moteur à refroidisseur intermédiaire et turbocompresseur utilisant du gaz naturel qui est capable de fournir naturellement une carburant selon un rapport air/carburant d'un mélange air/carburant alimenté dans la chambre à combustion. Dans ce système, un régulateur de pression aspirée naturellement est installé entre un collecteur d'admission d'un moteur et un mélangeur de telle sorte que l'air de la pression de suralimentation provenant du collecteur d'admission est mélangé au gaz, régulé de manière à obtenir une pression faible à partir d'une pression élevée, qui sera pulvérisé dans le mélangeur. L'air introduit dans la chambre à combustion et provenant du moteur est introduit dans le régulateur de pression aspirée naturellement. De l'air à pression élevée est régulé à basse pression pour s'écouler naturellement dans le mélangeur. Ainsi, par comparaison avec un moteur classique où le carburant est obligatoirement pulvérisé au moyen de l'injecteur sous la commande du module de commande électronique, un moteur à refroidisseur intermédiaire et turbocompresseur peut être remodelé facilement en un moteur à refroidisseur intermédiaire et turbocompresseur utilisant un gaz naturel à faible coût et sans éléments tels des dispositifs d'entrée et de sortie.
PCT/KR2008/004578 2007-08-08 2008-08-07 Système de moteur à refroidisseur intermédiaire et turbocompresseur utilisant du gaz naturel WO2009020353A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0079592 2007-08-08
KR1020070079592 2007-08-08

Publications (1)

Publication Number Publication Date
WO2009020353A1 true WO2009020353A1 (fr) 2009-02-12

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KR (1) KR20090016010A (fr)
WO (1) WO2009020353A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2214462A2 (fr) 2009-01-30 2010-08-04 SANYO Electric Co., Ltd. Appareil d'affichage et système d'affichage
WO2023064445A1 (fr) * 2021-10-14 2023-04-20 Icom North America Llc Système d'injection de vortex air/carburant en ligne à haut débit pour moteurs à combustion interne

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000009481U (ko) * 1998-11-05 2000-06-05 황한규 차량의 인터쿨러 와류장치
KR20030039009A (ko) * 2001-11-09 2003-05-17 현대자동차주식회사 디젤 엔진의 흡기 시스템

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000009481U (ko) * 1998-11-05 2000-06-05 황한규 차량의 인터쿨러 와류장치
KR20030039009A (ko) * 2001-11-09 2003-05-17 현대자동차주식회사 디젤 엔진의 흡기 시스템

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2214462A2 (fr) 2009-01-30 2010-08-04 SANYO Electric Co., Ltd. Appareil d'affichage et système d'affichage
WO2023064445A1 (fr) * 2021-10-14 2023-04-20 Icom North America Llc Système d'injection de vortex air/carburant en ligne à haut débit pour moteurs à combustion interne

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Publication number Publication date
KR20090016010A (ko) 2009-02-12

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