WO2001063107A1 - Moteurs a combustion interne - Google Patents

Moteurs a combustion interne Download PDF

Info

Publication number
WO2001063107A1
WO2001063107A1 PCT/GB2001/000678 GB0100678W WO0163107A1 WO 2001063107 A1 WO2001063107 A1 WO 2001063107A1 GB 0100678 W GB0100678 W GB 0100678W WO 0163107 A1 WO0163107 A1 WO 0163107A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
combustion chamber
cylinder head
manifold
air
Prior art date
Application number
PCT/GB2001/000678
Other languages
English (en)
Inventor
Richard Alan Bastable
Original Assignee
Richard Alan Bastable
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 Richard Alan Bastable filed Critical Richard Alan Bastable
Priority to AU33887/01A priority Critical patent/AU3388701A/en
Publication of WO2001063107A1 publication Critical patent/WO2001063107A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B69/00—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/20—Multi-cylinder engines with cylinders all in one line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/16—Cylinder liners of wet type
    • F02F1/166—Spacer decks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1824—Number of cylinders six
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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

  • This invention is concerned with improvements in and relating to internal combustion engines, especially gas injection engincd, and is also concerned with a cylinder head for such engines.
  • Gas injection engines using liquid petroleum gas (LPG) or compressed natural gas (CNG) are not as thermally efficient as other internal combustion engines as they must have a lower compression ratio and the gas/air mixture in the combustion chamber bums more slowly than does the fuel/air mixture in a petrol or diesel engine.
  • gas powered engines have poor cold starting characteristics.
  • a major advantage of a gas powered engine is that it is environmentally clean with low pollution exhaust emissions.
  • the present invention is an internal combustion engine having an inlet air manifold, at least one cylinder having a combustion chamber, spark ignitor and a fuel injector, a cylinder head including an inlet valve connecting the inlet air manifold to the or each combustion chamber, and a pressure relief valve connecting the combustion chamber to the manifold and operable to pass to the manifold part of the air/fuel mixture in the combustion chamber if the pressure in the combustion chamber during compression exceeds a maximum desired pressure.
  • the engine may be a gas injection engine. -?-
  • the spark ignitor and the injector may be mounted in an injector plate intermediate the engine cylinder block and the cylinder head.
  • the present invention is also a cylinder head for use in an internal combustion engine as defined in either of the last two preceding paragraphs, the cylinder head partly defining at least one combustion chamber and including an inlet valve connecting an air inlet manifold to the or each combustion chamber, and a pressure relief valve connecting the combustion chamber to the manifold and operable to pass to the manifold part of the air/fuel mixture in the combustion chamber if the pressure in the cylinder during compression exceeds a maximum desired pressure.
  • Fig. 1 is a partially exploded perspective view of a cylinder head on a cylinder block of an engine according to the present invention
  • Fig. 2 is a cross sectional elevation of a gas injector/pressure relief valve.
  • a gas injection engine according to the present invention comprises a cylinder block 10 on which is mounted an intermediate injection plate 12 and a cylinder head 14.
  • the cylinder block 10 is conventional and defines six cylinders in line, though these are not visible in Fig.1. and the cylinder head 14 at least partly defines a combustion chamber at the -
  • the injection plate 12 has six holes 16 aligned with respect e cylinders in the cylinder block, the holes 16 lengthening or forming extensions of the combustion chambers.
  • valves 18 receive the pressurised liquid fuel, which may be either liquid petroleum gas (LPG) or compressed natural gas (CNG), from a line 19 and it passes from each valve 18 to a respective injector 20 for each combustion chamber at an appropriate point in the cycle of that cylinder.
  • LPG liquid petroleum gas
  • CNG compressed natural gas
  • the amount of gas injected into the cylinders and the timing of the injection is controlled by conventional engine control means in accordance with the required engine speed and power.
  • the cylinder head 14 has an inlet air manifold 24 which receives air through an inlet pipe
  • valve 22 is connected to the combustion chambers through conventional valves 26 which open under the control of the engine control means at the start of the induction stroke.
  • Each valve 26, as seen in Fig. 2, has a body 30 on which is mounted a head 31 and in which are defined an outlet passage 34.
  • the outlet passage 34 contains a relief valve 42 which is operated by electrical means to open during the compression stroke if the pressure in the cylinder exceeds a predetermined value corresponding to the maximum desired compression ratio in the cylinder, but is held shut during the ignition stroke.
  • a relief valve 42 which is operated by electrical means to open during the compression stroke if the pressure in the cylinder exceeds a predetermined value corresponding to the maximum desired compression ratio in the cylinder, but is held shut during the ignition stroke.
  • the cryocooler is effectively a heat exchanger in which the hot excess mixture from the combustion chamber is cooled by. and inturn heats, the fuel gas before it passes through the line 19 to the valves 18.
  • mechanical means could also be employed.
  • the compression ratio in the cylinders can be controlled by the engine control means operating the valves 42, and this control, in addition to the normal controls of mixture richness and timing allows the engine to be operated veiy efficiently.
  • the engine described may be a petrol engine, or more especially a diesel engine, modified to use gas as its fuel by having the cylinder head and the injection plate mounted on the original cylinder block; the added control of the compression ratio provided by the present invention allows the ratio to be reduced to the appropriate value without having to make to the engine more fundamental changes such as altering the stroke of the pistons.
  • Control of the compression ratio may be exercised continuously if the valves 42 are operated electrically, or may be fixed for a given set-up if the control of the valves is mechanical. This flexibility allows an engine to be modified for use with iiferent fueis requiring uinerent optimum compression ratios.
  • valve 26 of Fig. 2 has. in addition to the outlet passage 34 previously described, an inlet passage 32 through which fuel gas, which may be in a liquid or gaseous state, is passed to the combustion chamber through a valve 40 controlled, in this modification, by a solenoid 34.
  • the inlet passage 32 is surrounded by an annular insulating space 33 which is preferably a vacuum.
  • the engine may have any number of cylinders and the various valves may be of any suitable type and may be controlled by any appropriate control means or system. It should also be understood that references to fuel being "gas" include the petroleum or natural gas in a liquid state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Un moteur à combustion interne comprend un collecteur d'admission d'air (24), au moins un cylindre (16) doté d'une chambre à combustion, d'un allumeur (26) et d'un injecteur de combustible (21), une tête de cylindre (14) pourvue d'une soupape d'admission qui relie le collecteur d'admission d'air à la chambre à combustion ou à chacune des chambres, et une soupape de sûreté (26) qui relie la chambre à combustion au collecteur (24) et fonctionne pour amener au collecteur une partie du mélange air/combustible de la chambre à combustion, si la pression dans cette dernière excède une pression maximale souhaitée pendant la compression.
PCT/GB2001/000678 2000-02-23 2001-02-20 Moteurs a combustion interne WO2001063107A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU33887/01A AU3388701A (en) 2000-02-23 2001-02-20 Internal combustion engines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0004271.3 2000-02-23
GBGB0004271.3A GB0004271D0 (en) 2000-02-23 2000-02-23 Recirculated compression direct gas injection system

Publications (1)

Publication Number Publication Date
WO2001063107A1 true WO2001063107A1 (fr) 2001-08-30

Family

ID=9886247

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/000678 WO2001063107A1 (fr) 2000-02-23 2001-02-20 Moteurs a combustion interne

Country Status (3)

Country Link
AU (1) AU3388701A (fr)
GB (2) GB0004271D0 (fr)
WO (1) WO2001063107A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2432192A (en) * 2005-11-10 2007-05-16 Roger Kennedy Manifold block for improving the efficiency of an internal combustion engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20032616A1 (it) * 2003-12-30 2005-06-30 Iveco Spa Motore a gas, testa cilindri per motore a gas, metodo di produzione di detta testa cilindri, e metodo di alimentazione del gas a detto motore a gas

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB968342A (en) * 1961-03-01 1964-09-02 Ruston & Hornsby Ltd Improvements in internal combustion engine cylinder heads
US3155084A (en) * 1962-03-28 1964-11-03 Caterpillar Tractor Co Cooling means for internal combustion engines
DE19509239A1 (de) * 1995-03-12 1996-11-28 Norbert Dipl Ing Seebeck Steuerbare Selbstzündung bei Verbrennungsmotoren
EP0805266A1 (fr) * 1996-05-03 1997-11-05 Automobiles Peugeot Moteur à combustion interne, à injection pilotée de carburant
EP0945606A2 (fr) * 1998-03-27 1999-09-29 Isuzu Ceramics Research Institute Co., Ltd. Moteur à combustion interne à gaz avec turbo surchargeur et moto-générateur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB577698A (en) * 1944-06-01 1946-05-28 Morris Motors Ltd Improvements in or relating to means for relieving excessive compression pressure inthe combustion chambers of internal combustion engines
GB745714A (en) * 1953-12-30 1956-02-29 North Eastern Marine Engineeri Improvements in and relating to the control of internal combustion engines
DE19743061A1 (de) * 1997-09-30 1999-04-01 Bosch Gmbh Robert Verfahren zum Betrieb einer Brennkraftmaschine und Kraftstoffeinspritzsystem zur Durchführung des Verfahrens

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB968342A (en) * 1961-03-01 1964-09-02 Ruston & Hornsby Ltd Improvements in internal combustion engine cylinder heads
US3155084A (en) * 1962-03-28 1964-11-03 Caterpillar Tractor Co Cooling means for internal combustion engines
DE19509239A1 (de) * 1995-03-12 1996-11-28 Norbert Dipl Ing Seebeck Steuerbare Selbstzündung bei Verbrennungsmotoren
EP0805266A1 (fr) * 1996-05-03 1997-11-05 Automobiles Peugeot Moteur à combustion interne, à injection pilotée de carburant
EP0945606A2 (fr) * 1998-03-27 1999-09-29 Isuzu Ceramics Research Institute Co., Ltd. Moteur à combustion interne à gaz avec turbo surchargeur et moto-générateur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2432192A (en) * 2005-11-10 2007-05-16 Roger Kennedy Manifold block for improving the efficiency of an internal combustion engine
GB2432192B (en) * 2005-11-10 2010-11-03 Roger Kennedy Induction regulator block
EP2362088A1 (fr) 2005-11-10 2011-08-31 Roger Hal Kennedy Bloc regulateur à induction
US8181630B2 (en) 2005-11-10 2012-05-22 Roger Kennedy Induction regulator block

Also Published As

Publication number Publication date
GB2359589B (en) 2004-03-17
GB2359589B8 (en) 2018-01-17
GB0004271D0 (en) 2000-04-12
GB0104104D0 (en) 2001-04-04
GB2359589A8 (en) 2018-01-17
GB2359589A (en) 2001-08-29
AU3388701A (en) 2001-09-03

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