EP3748145A1 - Moteur à taux de compression variable (vcr) - Google Patents

Moteur à taux de compression variable (vcr) Download PDF

Info

Publication number
EP3748145A1
EP3748145A1 EP19178942.9A EP19178942A EP3748145A1 EP 3748145 A1 EP3748145 A1 EP 3748145A1 EP 19178942 A EP19178942 A EP 19178942A EP 3748145 A1 EP3748145 A1 EP 3748145A1
Authority
EP
European Patent Office
Prior art keywords
piston
engine
vcr
compression ratio
clearance position
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.)
Granted
Application number
EP19178942.9A
Other languages
German (de)
English (en)
Other versions
EP3748145B1 (fr
Inventor
Cyril Huber
Ingemar Nylund
Konrad Räss
Marcel Ott
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.)
Winterthur Gas and Diesel AG
Original Assignee
Winterthur Gas and Diesel AG
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 Winterthur Gas and Diesel AG filed Critical Winterthur Gas and Diesel AG
Priority to EP19178942.9A priority Critical patent/EP3748145B1/fr
Priority to DK19178942.9T priority patent/DK3748145T3/da
Priority to JP2020059258A priority patent/JP2020200826A/ja
Priority to CN202010268116.9A priority patent/CN112049725B/zh
Priority to KR1020200062376A priority patent/KR20200141004A/ko
Publication of EP3748145A1 publication Critical patent/EP3748145A1/fr
Application granted granted Critical
Publication of EP3748145B1 publication Critical patent/EP3748145B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/044—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of an adjustable piston length
    • 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
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston 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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • 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
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length
    • 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
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D15/00—Varying compression ratio
    • F02D15/02—Varying compression ratio by alteration or displacement of piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • 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
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02B2075/1808—Number of cylinders two
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/03—Controlling by changing the compression ratio

Definitions

  • the invention relates to a variable compression ratio (VCR) engine and a method for driving a variable compression ratio (VCR) engine.
  • VCR variable compression ratio
  • the compression ratio is an important parameter for the combustion, the thermal efficiency and for the exhaust gas emissions.
  • the compression ratio of a combustion engine represents the ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity.
  • a piston engine it is the ratio between the volume of the cylinder and combustion chamber when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke.
  • the compression ratio may be calculated by the ratio between the sum of the displacement volume and the clearance volume and the clearance volume.
  • the displacement volume is the volume inside the cylinder displaced by the piston from the beginning of the compression stroke to the end of the stroke.
  • the clearance volume is the volume of the space in the cylinder left at the end of the compression stroke.
  • the compression ratio is usually chosen to yield the best engine performance. Often the high load engine performance is the most relevant point for the choice. For optimal performance over the whole operating range a variable compression ratio is desirable.
  • the compression ratio may be changed by allowing the gas to enter an additional volume outside the cylinder as disclosed for example in EP2677141 A1 or by a displaceable exit valve seat as disclosed in JPS61-197731 A .
  • Large reciprocating piston combustion engines regularly comprise one or more cylinders equipped with a cylinder liner respectively, one or more pistons movably arranged within the respective cylinder liner, and a crankshaft rotatably arranged in a crankshaft housing, with each piston being connected to a respective crosshead via a piston rod, and with each crosshead being connected to the crankshaft via a connecting rod to drive the crankshaft.
  • the piston rods are typically guided rectilinearly along their longitudinal axis, and the respective crosshead converts the rectilinear movement of the piston rod into a non-rectilinear movement of the connecting rod.
  • EP2687707 A2 discloses a large reciprocating piston combustion engine wherein the crosshead and/or the piston may be provided with a control apparatus for controlling the compression ratio of the reciprocating piston combustion engine.
  • the piston rod may be extended by a hydraulic cylinder sitting in the crosshead pin. Thereby the possible maximum and minimum positions of the piston are changed.
  • VCR variable compression ratio
  • VCR variable compression ratio
  • VCR variable compression ratio
  • variable compression ratio (VCR) engine and the method of operating a variable compression ratio (VCR) engine according to the independent claims.
  • variable compression ratio (VCR) engine comprising at least one cylinder with a piston movably arranged within the cylinder, adapted to perform a predefined piston stroke within the cylinder.
  • VCR variable compression ratio
  • the variable compression ratio (VCR) engine comprises a setting unit for setting a preset compression ratio by setting a preset clearance position.
  • the piston moves between the bottom dead center and the top dead center.
  • the distance between these bottom and top positions corresponds to the piston displacement length which may be determined by the length of the crankshaft and the length of the connection rod.
  • the preset clearance position is a preset top position of the piston, in particular the top position of the top ring, and corresponds to a respective clearance volume.
  • the top ring is a seal ring positioned in the upper most groove of the piston.
  • the setting of the clearance volume defines the compression ratio
  • the range of movement of the piston within the cylinder may be shifted such that a lower clearance position, a greater clearance volume and hence a smaller compression ratio may be achieved.
  • the VCR-engine further comprises a control unit for setting at least one temporal clearance position different from the preset clearance position and for inducing at least one piston movement with the temporal clearance position.
  • the temporal clearance position is above the preset clearance position, in other words closer to the highest possible top position as the preset clearance.
  • control unit is adapted for setting thereafter the preset clearance position again and inducing the piston movements with the preset clearance position.
  • a piston movement with the temporal clearance position is a movement between a bottom and top position, wherein the top position corresponds to the temporal clearance position.
  • a temporal clearance position is chosen which corresponds to the absolute maximum position of the piston and hence to the smallest clearance volume and to the biggest possible compression ratio.
  • a temporal clearance position corresponding to a smaller clearance volume as compared to the preset clearance position is achieved from time to time, carbon build ups may be reduced.
  • the piston cleans the inner wall of the cylinder while moving along the inner wall. Deposits of carbon material which may build up at the inner wall of the cylinder in a region above the clearance position of the piston may be removed when the piston, in particular the top ring, passes this area.
  • control unit is adapted for inducing at least one piston movement with a temporal clearance position according to at least one predetermined scheme.
  • the scheme preferably defines successive values of temporal clearance positions, time intervals or number of strokes for holding temporal clearance positions and/or setting cycles.
  • the scheme may induce a repeated setting of a piston movement with a temporal clearance position corresponding to a smaller clearance volume as compared to the preset clearance position after predetermined time intervals or after predetermined piston stroke movements.
  • the scheme may provide a curve defining the clearance positions over time or number of position strokes.
  • the temporal clearance position is changed according to this curve over time or over number of piston strokes.
  • the scheme may define a stepwise change of the temporal clearance positions.
  • the scheme may define the time or the number of piston strokes by which the temporal clearance value is held.
  • control unit is adapted for inducing a piston movement with the temporal clearance position on demand.
  • control unit is adapted for inducing at least one piston movement with a temporal clearance position every 100-5000000 piston strokes.
  • control unit is adapted for inducing at least one piston movement with a temporal clearance position every 1h - 2 months of operating time.
  • the VCR engine may comprise at least two cylinders, and the control unit may be adapted for inducing a piston movement with a temporal clearance position for a selected cylinder.
  • the other cylinders may perform predefined piston strokes with a preset clearance position for providing a predefined combustion, a predefined thermal efficiency and a predefined exhaust gas emission.
  • the control unit may be adapted for selecting a respective cylinder according to at least one predetermined scheme.
  • the VCR engine may comprise at least two cylinders, and the control unit may be adapted for inducing a piston movement with a temporal clearance position for all cylinder pistons simultaneously or for one cylinder after the other.
  • the VCR engine may comprise a number of installed cylinders, the number at least three, and the control unit may be adapted for simultaneously inducing a piston movement with a temporal clearance position for a number of the installed cylinders.
  • the number may be between two and the number of installed cylinders minus one.
  • control unit is adapted for inducing a piston movement with a maximum compression ratio at each start-up and/or shut down of the engine.
  • the VCR comprises a sensor unit for detecting a value that gives an indication of the presence and/or thickness of the deposits in the area above the piston.
  • Deposits may be responsible for a wear step which could cause damage of the position rings.
  • the sensor unit may comprise an ultrasound sensor.
  • an optical sensor or an electro-magnetically sensor for detecting a resistance or a capacity may be included.
  • the control unit may be adapted for inducing a piston movement with a temporal clearance position in dependence of the values detected by the sensor unit.
  • control unit may induce a change of the clearance position according to a scheme in order to reduce the deposits on the inside surface off the cylinder wall.
  • the piston is connected to a piston rod and the piston is provided with the setting unit for controlling the compression ratio.
  • the setting unit comprises or is coupled to a mechanism for displacing the top ring of the piston with respect to the piston rod.
  • the upper part of the piston wearing the top ring is moved with respect to the lower part of the piston and/or the piston rod.
  • the piston may comprise two or more parts which are moveable with respect to each other.
  • the control unit may comprise or may be coupled to the same mechanism for displacing the top ring of the piston with respect to the piston rod or to a different mechanism for adjusting the temporal clearance position.
  • the position of the top ring preferably together with the upper part of the piston, defines the clearance position and hence the clearance volume.
  • the lengths of the stroke and hence the displacement volume remains the same.
  • the piston is connected to a crosshead via a piston rod, and the crosshead is connected to a crankshaft via a connecting rod to drive the crankshaft.
  • the crosshead may be provided with a mechanism for controlling the compression ratio.
  • the setting unit comprises or is coupled to a mechanism for displacing the piston rod and/or the piston with respect to the crosshead, for example as disclosed in EP2687707A2 .
  • the control unit may comprise or be coupled to the same mechanism for displacing the piston rod and/or the piston with respect to the crosshead or to a different mechanism for adjusting the temporal clearance position.
  • the connecting rod is provided with a mechanism for controlling the compression ratio.
  • the setting unit comprises or is coupled to a mechanism for displacing the connecting rod with respect to the crankshaft, for example as disclosed in EP2801713 A1 .
  • the mechanism may comprise an eccentric tappet at the lower bearing of the at least one connecting rod.
  • the mechanism further may comprise a locking mechanism for locking the eccentric tappet either to the connecting rod or to a corresponding crank pin of the crankshaft to operate the reciprocating piston combustion engine changeably at a first or second compression ratio respectively.
  • the control unit may comprise or be coupled to the same mechanism for displacing the connecting rod with respect to the crankshaft or to a different mechanism for adjusting the temporal clearance position.
  • the whole piston drive unit may be moveable to change the clearance position of the piston.
  • the control unit and/or the setting unit may comprise or be coupled to a mechanism for moving the whole piston drive unit.
  • the present invention preferably relates to a VCR internal combustion engine like a large marine or ship engine or a stationary engine whose cylinders have an inner diameter of at least 200 mm.
  • the engine preferably is a two-stroke engine or a two-stroke cross head engine.
  • the engine can be a diesel or a gas engine, a dual fuel or a multi fuel engine. Burning of liquid and or gaseous fuels in such engines is possible as well as self-igniting or forced igniting.
  • the engine has at least one cylinder having a piston therein.
  • the piston is connected to a crankshaft.
  • the piston reciprocates between a top dead center (TDC) and a bottom dead center (BDC) during operation of the engine.
  • the cylinder typically has at least one air passage opening for intake, the air inlet in particular arranged in the liner of the cylinder, and at least one air passage opening for exhaust, the exhaust outlet in particular arranged in the cover of the cylinder.
  • the internal combustion engine can be a longitudinally flushed two-stroke engine.
  • internal combustion engine also refers to large engines which can be operated not only in diesel mode, which is characterized by the self-ignition of the fuel, but also in Otto mode, which is characterized by the positive ignition of the fuel, or in mixtures of the two. Furthermore, the term internal combustion engine includes in particular dual-fuel engines and large engines in which the self-ignition of the fuel is used for the positive ignition of another fuel.
  • Engine speed is preferably below 800 RPM (4-stroke) and more preferably below 200 RPM (2-stroke) which indicates the designation of low speed engines.
  • Fuel can be diesel or marine diesel oils or heavy fuel oils or emulsions or slurries or methanol or ethanol as well as gases like liquid natural gas (LNG) liquid petrol gas (LPG) and so on.
  • LNG liquid natural gas
  • LPG liquid petrol gas
  • LBG Liquified Biogas
  • biological Fuels e. g. Algae fuel or Seaweed Oil
  • hydrogen e. g. made by Power-To-Gas or Power-To-Liquid.
  • VCR variable compression ratio
  • the object is also achieved by a method for driving a variable compression ratio (VCR) engine, comprising at least one cylinder with a moveable piston, adapted to perform a predefined piston stroke within the cylinder.
  • the method comprises the steps of setting a preset compression ratio by setting a preset clearance position, preferably by a setting unit, setting at least one temporal clearance position different from the preset clearance position, preferably by a control unit, and inducing at least one piston movement with the temporal clearance position.
  • the piston movement with the temporal clearance position is induced according to at least one predetermined scheme.
  • the scheme preferably defines successive values of temporal clearance positions, time intervals or numbers of strokes for holding temporal clearance positions and/or setting cycles.
  • the scheme defines a stepwise rising and/or lowering of temporal clearance positions.
  • a piston movement with the temporal clearance position may be induced on demand and/or after a predetermined number of piston strokes and/or after a predetermined operation time.
  • At least one piston movement with a temporal clearance position may be induced every 100-5000000 piston strokes and/or every 1h - 2 months of operating time.
  • the piston movement with a temporal compression ratio may be induced for all cylinder pistons simultaneously or for one cylinder after the other or simultaneously for a part of the cylinders.
  • a piston movement with a temporal clearance position is induced at each start-up and/or shut down of the engine.
  • the clearance position may be adapted by displacing the top ring of the piston, preferable the upper part of the piston comprising the top ring, of the piston with respect to the lower part of the piston and/or the piston rod.
  • the clearance position may be adapted by displacing a piston rod and/or the piston with respect to a crosshead.
  • the clearance position may be adapted by displacing a connecting rod with respect to a crankshaft.
  • a value giving an indication of the thickness of the deposits is detected, for example by an ultrasound sensor.
  • a piston movement with a temporal clearance position is induced in dependence of values detected by the sensor unit.
  • the object is achieved by a computer program product directly loadable into the internal memory of a digital computer comprising software code portions for performing the steps of a method according as described above, when said product is run on a computer.
  • the scheme according to which the piston movement is induced may also be digitally stored in a memory.
  • Figure 1 shows a variable compression ratio (VCR) engine 1 comprising a cylinder 2 with a piston 3 movably arranged within the cylinder 2.
  • the piston 3 is adapted to perform a predefined piston stroke within the cylinder 2 between a top dead center and a bottom dead center (not shown in the figure). In the figure the piston 3 is shown in an intermediate position.
  • VCR variable compression ratio
  • the piston 3 is connected to a crosshead 7 via a piston rod 6 and the crosshead 7 is connected to a crankshaft 8 via a connecting rod 9 to drive the crankshaft 8.
  • the crosshead 7 is provided with the setting unit 4 setting a preset compression ratio.
  • the setting unit 4 comprises a mechanism for displacing the piston rod 6 and the piston 3 with respect to the crosshead 7.
  • the VCR-engine 1 further comprises a control unit 5 for setting at least one temporal clearance position (see figure 3 ) different from the preset clearance position 11 and for inducing at least one piston movement with the temporal clearance position 15.
  • the control unit 5 is coupled to the setting unit 4.
  • the mechanism 10 is used for adjusting the preset clearance position and the temporal clearance position.
  • control unit 5 may be coupled to a different mechanism (not shown in the figure) for adapting the temporal clearance position.
  • Figure 2 shows a schematic view of a VCR engine 1 with a piston 3 in a preset clearance position 11.
  • the VCR engine 1 may comprise a sensor unit 16 for detecting the thickness of the deposits, for example an ultrasound sensor.
  • control unit 5 may induce the setting of a temporal clearance position.
  • the clearance position may be changed by the control unit 5 for example to a temporal clearance position 15 as for example shown in Figure 3 .
  • control unit 5 may put back the clearance position to the originally preset clearance position 11.
  • Figure 4a shows a first typical curve of a clearance position (CP) over time (t), wherein the clearance position is changed from a preset clearance position (PCP) to temporal clearance position (TCP) linearly.
  • Figure 4b shows a second typical curve of a clearance position (CP) over time (t), wherein the clearance position is changed stepwise.
  • the time (t) may be measured in time units or in number of piston strokes.
  • the temporal clearance position may be held constant for a time span t c .
  • the clearance position may return to the preset clearance position (PCP) it held before the increase or to a different value, as indicated in Figure 4a with dotted lines. Thus a new preset clearance position can be chosen.
  • PCP preset clearance position
  • the clearance position typically may be changed in a range of 20 to 200mm.
EP19178942.9A 2019-06-07 2019-06-07 Moteur à taux de compression variable (vcr) Active EP3748145B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19178942.9A EP3748145B1 (fr) 2019-06-07 2019-06-07 Moteur à taux de compression variable (vcr)
DK19178942.9T DK3748145T3 (da) 2019-06-07 2019-06-07 Motor med variabelt kompressionsforhold (VCR)
JP2020059258A JP2020200826A (ja) 2019-06-07 2020-03-30 可変圧縮比（ｖｃｒ）機関
CN202010268116.9A CN112049725B (zh) 2019-06-07 2020-04-08 可变压缩比发动机
KR1020200062376A KR20200141004A (ko) 2019-06-07 2020-05-25 가변 압축비(ｖｃｒ) 엔진

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19178942.9A EP3748145B1 (fr) 2019-06-07 2019-06-07 Moteur à taux de compression variable (vcr)

Publications (2)

Publication Number Publication Date
EP3748145A1 true EP3748145A1 (fr) 2020-12-09
EP3748145B1 EP3748145B1 (fr) 2023-12-06

Family

ID=66793806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19178942.9A Active EP3748145B1 (fr) 2019-06-07 2019-06-07 Moteur à taux de compression variable (vcr)

Country Status (5)

Country Link
EP (1) EP3748145B1 (fr)
JP (1) JP2020200826A (fr)
KR (1) KR20200141004A (fr)
CN (1) CN112049725B (fr)
DK (1) DK3748145T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113818970B (zh) * 2021-08-10 2022-12-23 浙江吉利控股集团有限公司 一种发动机气缸盖、发动机、车辆及沉积物处理方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB288790A (en) * 1927-03-11 1928-04-19 Napier & Son Ltd Improvements in or relating to the cylinder heads of internal combustion engines
JPS61197731A (ja) 1985-02-25 1986-09-02 Susumu Nagai 可変圧縮比デイ−ゼル機関
EP2677141A1 (fr) 2012-06-21 2013-12-25 Wärtsilä Schweiz AG Procédé de fonctionnement dýun grand moteur diesel deux temps, ainsi que grand moteur diesel deux temps
EP2687707A2 (fr) 2012-07-17 2014-01-22 Wärtsilä Schweiz AG Moteur à combustion à piston alternatif important, appareil de commande et procédé de commande d'un tel moteur
EP2801713A1 (fr) 2013-05-07 2014-11-12 Wärtsilä Schweiz AG Moteur à combustion interne à piston alternatif et appareil et procédé de commande d'un tel moteur
DE102014220424A1 (de) * 2014-10-08 2016-04-14 Robert Bosch Gmbh Verfahren zum Betreiben eines Kraftfahrzeugs
US20180058314A1 (en) * 2015-03-05 2018-03-01 Hitachi Automotive Systems, Ltd. Control Device and Control Method for Vehicle Drive Mechanism
EP3296597A1 (fr) * 2015-05-11 2018-03-21 IHI Corporation Moteur à crosse
US20180187594A1 (en) * 2015-06-25 2018-07-05 Nissan Motor Co., Ltd. Variable compression ratio internal combustion engine and learning method therefor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042953B (de) * 1955-11-03 1958-11-06 Eisen & Stahlind Ag Brennkraftmaschine mit Vollschaftkolben
JP4239813B2 (ja) * 2003-12-19 2009-03-18 日産自動車株式会社 内燃機関の圧縮比制御装置及び圧縮比制御方法
GB2475068B (en) * 2009-11-04 2014-06-25 Lotus Car A two-stroke internal combustion engine with variable compression ratio and an exhaust port shutter
DE102010032486A1 (de) * 2010-07-28 2012-02-02 Daimler Ag Verfahren zum Betreiben einer Hubkolbenmaschine
WO2015108178A1 (fr) * 2014-01-20 2015-07-23 株式会社Ihi Moteur à crosse
KR20160012683A (ko) * 2014-07-25 2016-02-03 명광록 사이드 크로스헤드 엔진
US10428863B2 (en) * 2017-06-21 2019-10-01 GM Global Technology Operations LLC Variable compression ratio engine
JP6870499B2 (ja) * 2017-06-26 2021-05-12 株式会社Ihi 可変圧縮装置及びエンジンシステム

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB288790A (en) * 1927-03-11 1928-04-19 Napier & Son Ltd Improvements in or relating to the cylinder heads of internal combustion engines
JPS61197731A (ja) 1985-02-25 1986-09-02 Susumu Nagai 可変圧縮比デイ−ゼル機関
EP2677141A1 (fr) 2012-06-21 2013-12-25 Wärtsilä Schweiz AG Procédé de fonctionnement dýun grand moteur diesel deux temps, ainsi que grand moteur diesel deux temps
EP2687707A2 (fr) 2012-07-17 2014-01-22 Wärtsilä Schweiz AG Moteur à combustion à piston alternatif important, appareil de commande et procédé de commande d'un tel moteur
EP2801713A1 (fr) 2013-05-07 2014-11-12 Wärtsilä Schweiz AG Moteur à combustion interne à piston alternatif et appareil et procédé de commande d'un tel moteur
DE102014220424A1 (de) * 2014-10-08 2016-04-14 Robert Bosch Gmbh Verfahren zum Betreiben eines Kraftfahrzeugs
US20180058314A1 (en) * 2015-03-05 2018-03-01 Hitachi Automotive Systems, Ltd. Control Device and Control Method for Vehicle Drive Mechanism
EP3296597A1 (fr) * 2015-05-11 2018-03-21 IHI Corporation Moteur à crosse
US20180187594A1 (en) * 2015-06-25 2018-07-05 Nissan Motor Co., Ltd. Variable compression ratio internal combustion engine and learning method therefor

Also Published As

Publication number Publication date
EP3748145B1 (fr) 2023-12-06
JP2020200826A (ja) 2020-12-17
DK3748145T3 (da) 2024-01-29
KR20200141004A (ko) 2020-12-17
CN112049725B (zh) 2024-05-03
CN112049725A (zh) 2020-12-08

Similar Documents

Publication Publication Date Title
CN1085782C (zh) 内燃机
JP2004278536A (ja) 往復内燃エンジン、その作動方法および充填物交換バルブのストローク機能調整装置
JP6137340B2 (ja) クロスヘッド型エンジン
WO2013054772A1 (fr) Moteur à deux temps et procédé de lubrification d'un moteur à deux temps
JP2013510261A (ja) 可変圧縮比および排気ポートシャッターを有する２ストローク内燃機関およびそのようなエンジンを動作させる方法
EP3748145B1 (fr) Moteur à taux de compression variable (vcr)
JP4944131B2 (ja) 可変圧縮比及び排気口シャッタを有する２サイクル内燃機関
DK177695B1 (en) A large slow running turbocharged two-stoke uniflow internal combustion engine with crosshead and a cam driven exhaust valve actuation system
US20030097997A1 (en) Kit and method for converting a diesel engine to natural gas engine
GB2273327A (en) A mechanism for converting reciprocatory to rotary motion
EP2801713A1 (fr) Moteur à combustion interne à piston alternatif et appareil et procédé de commande d'un tel moteur
EP3889472A1 (fr) Boîtier de segment de piston
EP2336521A1 (fr) Agencement de cylindre d'un moteur à combustion interne
JP7381191B2 (ja) 圧縮比制御装置及びエンジンシステム
EP4166769A1 (fr) Moteur à combustion interne doté d'un dispositif à taux de compression variable
GB2261025A (en) Four-stroke engine inlet and exhaust valving
JP2023059836A (ja) 長手方向掃気式大型ディーゼル・エンジン
JP7236221B2 (ja) 舶用ディーゼルエンジン
JP7263811B2 (ja) エンジンシステム
JP7309111B2 (ja) エンジンシステム
RU2231657C2 (ru) Двухтактный двигатель внутреннего сгорания каменева
KR20220091372A (ko) 대형 디젤 엔진을 작동시키기 위한 방법 및 대형 디젤 엔진
JP2020197215A (ja) 大型エンジンの動作方法及び大型エンジン
JP6521095B2 (ja) ガスエンジン
RU2141045C1 (ru) Крейцкопфный двигатель внутреннего сгорания

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210304

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210805

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230823

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019042677

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20240122

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240307

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20231206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231206

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240307

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231206

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240306