EP4500000A1 - Brennkraftmaschine - Google Patents
BrennkraftmaschineInfo
- Publication number
- EP4500000A1 EP4500000A1 EP23717053.5A EP23717053A EP4500000A1 EP 4500000 A1 EP4500000 A1 EP 4500000A1 EP 23717053 A EP23717053 A EP 23717053A EP 4500000 A1 EP4500000 A1 EP 4500000A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- gas
- internal combustion
- combustion engine
- charge air
- 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.)
- Withdrawn
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus 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
- F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
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- 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
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
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- 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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0293—Safety devices; Fail-safe measures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/04—Gas-air mixing apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/04—Gas-air mixing apparatus
- F02M21/042—Mixer comprising a plurality of bores or flow passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
Definitions
- the invention relates to an internal combustion engine, preferably a dual-fuel internal combustion engine, and a vehicle, in particular a watercraft, or a stationary application with at least one internal combustion engine.
- Diesel engines are widely used in shipping due to their operational safety and the high energy content of diesel fuel.
- Fossil fuels in the shipping sector can hardly be replaced with electric drives.
- the amounts of energy required are usually too high and the energy storage densities are too low.
- Pure hydrogen-based solutions e.g. B. fuel cells or combustion engines are seen as disruptive in the traditional shipping sector because there is a lack of long-term experience.
- the lack of hydrogen infrastructure also creates high risks for the operation of pure hydrogen drives in ships.
- Another problem is the greater space and weight requirement of the tank systems for hydrogen as an energy source compared to the common diesel fuel. This means that only smaller amounts of hydrogen can be stored on board. As a result, the duration of the operation is inevitably limited. For example, in the event of unplanned changes in the operational profile (e.g. extreme weather conditions, route changes, relief operations such as firefighting or rescue) this could have fatal consequences and lead to the consumption of fuel and thus the failure of all drives.
- Dual-fuel internal combustion engines are known as an “intermediate solution”, in which part of the liquid fuel, usually diesel, is substituted by a gaseous fuel such as hydrogen.
- a gaseous fuel such as hydrogen.
- dual-fuel internal combustion engines can only be used with operated with liquid fuel.
- the dual-fuel internal combustion engines therefore offer the possibility of sizing large, expensive and heavy hydrogen tanks to a size that is required in normal conditions.
- Fuel reserves can be stored to the usual extent in the form of diesel. Both in the event of errors and when hydrogen is used up, the full drive power is still available in pure and familiar (and therefore tested) diesel operation.
- Known dual-fuel internal combustion engines are usually based on normal internal combustion engines that are designed only to operate using a liquid fuel, in particular diesel engines, with major modifications being necessary to enable operation in dual-fuel mode.
- an object of the invention to provide such a solution with which the disadvantages of previous solutions are at least partially avoided.
- an improved internal combustion engine preferably a dual-fuel internal combustion engine, which achieves the highest possible substitution rate and / or which requires as few modifications as possible to a known internal combustion engine, e.g. B. a diesel engine can be produced.
- an internal combustion engine preferably a dual-fuel internal combustion engine (e.g. a marine dual-fuel engine)
- the internal combustion engine includes a charge air compressor and a combustion chamber.
- the internal combustion engine further comprises a gas fuel supply device for supplying a gaseous fuel, preferably a hydrogen fuel.
- the gas fuel supply device opens into a (fluidic) charge air supply connection between the charge air compressor and the combustion chamber.
- the internal combustion engine is a dual-fuel internal combustion engine, it can expediently be operated with a liquid fuel, in particular a diesel fuel (corresponding to conventional internal combustion engines) or with a mixture of the liquid fuel and the gaseous fuel. During the mixture, part of the liquid fuel usually required is substituted by the gaseous fuel.
- the present disclosure thus provides an internal combustion engine, in particular a dual-fuel internal combustion engine, which ensures the most even distribution of the gaseous fuel, e.g. B. hydrogen, reached on all cylinders of the internal combustion engine.
- This distribution which is as uniform as possible, advantageously leads to the highest possible substitution rates.
- the internal combustion engine may further comprise an intercooler.
- the gas fuel supply device can open into a connecting section of the charge air supply connection between the charge air compressor and the charge air cooler.
- the charge air compressor and the charge air cooler are expediently fluidly connected to supply charge air from the charge air compressor to the charge air cooler by means of the connecting section.
- the introduction, in particular injection, of the gaseous fuel into an intake tract in front of the intercooler leads to improved cooling by the gaseous fuel acting as a heat conductor, whereby the mixture temperature can be reduced even further. Since low temperature is a key factor in preventing the gaseous fuel from self-ignition with knocking combustion, the cooling rate is another essential aspect through which the highest possible substitution rates can be achieved.
- the gas fuel supply device can open into a (further) connecting section of the charge air supply connection between the charge air cooler and the combustion chamber.
- the intercooler and the combustion chamber are expediently fluidly connected to supply charge air from the intercooler to the combustion chamber by means of the (further) connecting section.
- the (further) connecting section can be designed as an intake manifold of the internal combustion engine and/or as a section of the intake manifold.
- the internal combustion engine may include the intake manifold.
- the charge air supply connection can preferably extend between the charge air compressor and the combustion chamber, in particular between the charge air compressor and the charge air cooler and / or between the charge air cooler and the combustion chamber.
- the charge air supply connection can be z. B. a connection section between the charge air compressor and the charge air cooler and / or a (further) connection section between the charge air cooler and the combustion chamber, in particular z. B. an intake manifold.
- the gas fuel supply device opens into a component which is arranged in the charge air supply connection between the charge air compressor and the combustion chamber, e.g. B. in the intercooler.
- the gas fuel supply device may comprise a gas introduction device.
- the gas introduction device can control the gas fuel supply Connect the device and the charge air supply connection fluidly.
- the gas fuel supply device can open into the fluidic connection via the gas introduction device.
- the charge air supply connection can be through one or more (charge air) channels, e.g. B. charge air pipes, and / or one or more (charge air) channels, e.g. B. charge air pipes.
- the charge air supply connection can be several, e.g. B. have two (charge air) channels that run essentially parallel to one another.
- the gas introduction device can be designed for essentially uniformly distributed gas introduction, preferably gas injection, into the charge air supply connection.
- the evenly distributed introduction of gas into the charge air has the advantage that a particularly good mixing of the gaseous fuel with the charge air is achieved.
- the gas introduction device can have at least one charge air passage which is arranged in the charge air supply connection and/or which forms a section of the charge air supply connection.
- a cross section of the at least one charge air passage can correspond to a cross section of the charge air supply connection.
- the cross section of the at least one charge air passage can be essentially circular.
- the gas introduction device can also be referred to as an injection ring and/or “injection ring”.
- the gas introduction device can be designed as an injection ring (and/or injection ring and/or “injection ring”) and/or have an annular space in order to divide the gaseous fuel, preferably in the direction of at least one charge air passage.
- each of the gas passages can have a gas nozzle, preferably a mixing nozzle. This means that the gaseous fuel can not only be distributed evenly, but also, for example, as desired. B. can also be supplied to the charge air in a finely distributed manner.
- the gas introduction device can have a gas inlet.
- the gas inlet can be arranged essentially parallel to the at least one charge air passage.
- the gas introduction device can be fastened, in particular screwed and/or flanged, in the area of the gas inlet with a connection via which the gaseous fuel can be supplied to the gas inlet.
- the gas introduction device can have a plurality of charge air passages, preferably arranged in parallel.
- the gas inlet can be arranged essentially centrally above the plurality of charge air passages.
- An interior space and/or the annular space of the gas introduction device can be designed to distribute the gaseous fuel admitted via a gas inlet among the multiple charge air passages.
- the interior and/or the annular space can split into the multiple charge air passages and preferably form a gas guide to one of the charge air passages.
- the gaseous fuel can advantageously be distributed evenly among the plurality of charge air passages and thus a substantially equal amount of gaseous fuel can be introduced into each of the plurality of charge air passages.
- the gas fuel supply device may comprise a gas fuel metering device for controllably metering the gaseous fuel.
- the gas fuel metering device and the gas introduction device in particular the gas inlet of the gas introduction device, can expediently be fluidly connected to one another.
- the gas fuel metering device and the gas introduction device can be connected via a connection, in particular through one or more channels, e.g. B. pipes are formed, be fluidly connected.
- the connection can be double-walled.
- the gas fuel metering device can be fluidly connected to a source for the gaseous fuel, preferably a gas fuel tank, e.g. B. via a gas supply connection.
- the gas supply connection can be through one or more channels, e.g. B. pipes can be formed.
- the gas fuel metering device may have a sealed and/or double-walled wall construction.
- the wall construction can form a cover or housing.
- the gaseous fuel can have a gas pressure of less than 10 bar, e.g. B. 7 bar, can be introduced into the gas fuel metering device.
- a double-walled gas supply connection may be provided to supply the gaseous fuel to the gas fuel metering device.
- the gaseous fuel can be introduced into the gas fuel metering device via the double-walled gas supply connection, preferably from the gas fuel tank.
- the double-walled connection and the double-walled gas supply connection can be arranged coaxially with one another.
- the double-walled design has the advantage that in the event of a leak in an inner wall through which the gaseous fuel escapes, the gaseous fuel is collected by an outer wall and safely released to the outside, e.g. B. can be dissipated overboard.
- intermediate spaces which are each formed by an inner wall and an outer wall surrounding the inner wall of the double-walled connection, the double-walled wall construction and/or the double-walled gas supply connection, can be fluidly connected to one another in order to remove the gaseous fuel in the event of a leak.
- the spaces can each be designed as an annular volume.
- the double-walled connection can have a first gap formed by an inner wall and an outer wall surrounding the inner wall
- the double-walled wall construction can have a second gap formed by an inner wall and an outer wall surrounding the inner wall
- / or the double-walled gas supply connection may have a third gap formed by an inner wall and an outer wall surrounding the inner wall.
- the first gap, the second gap and/or the third gap can be fluidly connected so that the gaseous fuel can be removed in the event of a leak (in an inner wall).
- the gaseous fuel can advantageously be released via the gaps to the outside, e.g. B. overboard, discharged (or vented).
- this protection can be used in the event of a leak throughout Gas fuel supply device or along the entire supply of the gaseous fuel within the gas fuel supply device can be ensured.
- the double-walled connection, the double-walled wall construction and/or the double-walled gas supply connection can have a sensor system for detecting a leak.
- the sensor system can be arranged in at least one of the spaces.
- the sensor system can preferably be arranged on an end region of the double-walled gas supply connection facing away from the double-walled wall construction.
- the sensor system can be connected to a control device of the internal combustion engine for signaling purposes, whereby the control device can be designed to switch off the supply of the internal combustion engine with the gaseous fuel in the event of a leak, and at the same time to switch over to (mono-fuel) operation with the liquid fuel, so that the internal combustion engine remains operable without interruption.
- the sensor system can be used in an advantageous manner if, for example, B. the gaseous fuel flows around, a leak is detected and the safety of the internal combustion engine is thereby guaranteed.
- the gas fuel metering device can comprise at least one controllable valve, preferably at least one metering valve, for controllable metering of the gaseous fuel.
- the gas fuel metering device can include a plurality of controllable valves that are arranged next to one another.
- the at least one controllable valve can be controllable, in particular openable and closable, by means of the control device of the internal combustion engine.
- the control device can be designed to cause the at least one controllable valve to allow a predetermined amount of gaseous fuel (from a distributor volume) to pass through for an operating point of the internal combustion engine.
- the predetermined quantity can be stored (e.g. in a memory of the control device) and/or can be calculated by the control device.
- the gas fuel metering device may include a distribution volume and a collection volume.
- the at least one controllable valve can be designed for controllable metering of the gaseous fuel from the distribution volume into the collection volume.
- the collecting volume can comprise a, preferably single, chamber and/or be designed to bring together the gaseous fuel after the controllable metering through the at least one controllable valve.
- the gas fuel metering device can be designed so that the gaseous fuel can only pass from the distribution volume into the collection volume via the at least one controllable valve.
- the distribution volume and the collecting volume can, preferably exclusively, be fluidly connected to one another via the at least one controllable valve.
- the distributor volume can be referred to as a rail.
- the gas fuel supply device can be designed to be fixed to the internal combustion engine, attached to a main component of the internal combustion engine, preferably load-bearing, and/or an integral part of the internal combustion engine.
- a main component of the internal combustion engine preferably load-bearing, and/or an integral part of the internal combustion engine.
- no additional support structure is therefore necessary for the gas fuel supply device.
- the internal combustion engine can further comprise at least one cylinder, which has at least one inlet channel with an inlet valve and/or at least one outlet channel with an outlet valve for fluidly connecting to the combustion chamber of the internal combustion engine, and/or a turbine.
- the at least one inlet channel with the inlet valve and/or the at least one outlet channel with the exhaust valve can be formed in a cylinder head of the at least one cylinder.
- the internal combustion engine may further include an exhaust gas aftertreatment system.
- the exhaust gas aftertreatment system can have a particle filter and/or an SCR catalytic converter (e.g. for compliance with the EU Stage V emissions standard).
- the internal combustion engine can include an intake tract which has the charge air compressor, the charge air cooler, the intake manifold and the at least one inlet channel with the inlet valve (connected in series).
- the internal combustion engine can further comprise an exhaust tract which has the at least one outlet channel with the exhaust valve, the turbine and preferably the exhaust gas aftertreatment system (connected in series).
- the charge air cooler can be fluidly connected to the inlet manifold, the at least one inlet channel with the inlet valve and the combustion chamber by means of the charge air supply connection, preferably for supplying a mixture of charge air guided in the charge air supply connection and the gaseous fuel supplied by the gas fuel supply device.
- the fluidic connection of the intercooler with the inlet manifold, the at least one inlet channel with the inlet valve and the combustion chamber can be formed at least in sections by the charge air supply connection.
- the charge air supply connection can expediently be part of the intake tract.
- the at least one outlet channel with the outlet valve can be fluidly connected to the turbine and preferably to the exhaust gas aftertreatment system, in particular for discharging an exhaust gas from the combustion chamber and for driving the turbine through the exhaust gas.
- the turbine and the charge air compressor can form a turbocharger.
- the internal combustion engine can have several charge air compressors (and thus turbochargers) and several charge air coolers.
- the several charge air compressors are expediently connected upstream of the gas introduction device. In other words, preferably no charge air compressors are arranged between the gas introduction device and the inlet manifold.
- the internal combustion engine can further comprise a liquid fuel metering device, in particular a (common rail) injection system.
- a liquid fuel in particular diesel, can be introduced into a combustion chamber via controllable injectors of the injection system.
- the injectors can be controllable, in particular openable and closable, by means of the control device of the internal combustion engine.
- the control device can be designed to cause the injectors to introduce a predetermined amount of liquid fuel into the combustion chamber for an operating point of the internal combustion engine.
- a metering start time i.e. an injection time
- a metering pressure of the liquid fuel i.e. a rail pressure
- the predetermined metering amount of the liquid fuel can depend on the predetermined metering amount of the gaseous fuel that is passed through the at least one controllable valve of the gas fuel metering device (and vice versa).
- a well-dosed, reduced dosage amount of e.g. B. diesel fuel enters the combustion chamber and ignites a cylinder filling, whereby the metering quantity, the metering start time and / or the metering pressure can be advantageously adapted and optimized for the combustion.
- the internal combustion engine can be operable with a liquid fuel, preferably a diesel fuel, and/or the gaseous fuel, preferably a hydrogen fuel.
- the internal combustion engine may be a dual-fuel internal combustion engine which, preferably optionally, operates in a mono-fuel mode with a liquid fuel, preferably a Diesel fuel, or in a dual fuel mode with the liquid fuel and the gaseous fuel, preferably a hydrogen fuel, is operable.
- a liquid fuel preferably a Diesel fuel
- the gaseous fuel preferably a hydrogen fuel
- the internal combustion engine may include the control device.
- the control device may be part of a vehicle or stationary application (i.e., the vehicle or stationary application may include the control device).
- the control device can have a liquid fuel control device for regulating and/or controlling a dosage of the liquid fuel in mono-fuel mode and/or dual-fuel mode, and a gas fuel control device for regulating and/or controlling a dosage of the gaseous Fuel in dual fuel mode.
- the gas fuel control device can also be designed to regulate and/or control a metering of the gaseous fuel in a mode in which the internal combustion engine is operated only with the gaseous fuel (and not with the liquid fuel).
- the liquid fuel control device can be designed to repeatedly check whether at least one switching condition for switching between the mono-fuel mode and the dual-fuel mode is met, and preferably to initiate the switch if the at least one switching condition is fulfilled.
- the at least one switching condition for switching from the mono-fuel mode to the dual-fuel mode can be a threshold value exceeding and/or a threshold value falling below the threshold value of at least one predetermined threshold value of at least one physical quantity of the dual-fuel internal combustion engine, preferably a pressure and/or a temperature, include error-free operation of the liquid fuel control device and/or error-free operation of the gas fuel control device.
- a switch from mono-fuel mode to dual-fuel mode can be initiated by the following sequence if the at least one switching condition is met: a) sending a release message by the liquid fuel control unit to the gas fuel control unit that is in the dual -Fuel mode may be switched, b) sending a request message, preferably in response to the release message, by the gas fuel control device to the liquid fuel control device to request a switch from mono-fuel mode to dual-fuel mode, and c) sending a feedback message, preferably in response to the request message, by the liquid fuel control device to the gas fuel control device that a switch from mono-fuel mode to dual-fuel mode is initiated.
- the liquid fuel control device can be designed to carry out a check of a data content of the request message using a checksum check for integrity and using a rolling counter for timeliness, and to send the feedback message if the check is successful.
- the gas fuel control device can be designed to check at least one gas fuel-specific switching condition and/or a content of the release message and to send the request message if the at least one gas fuel-specific switching condition is met and/or the content of the release message meets at least one predetermined criterion Fulfills.
- the liquid fuel control device and/or the gas fuel control device can be designed to initiate a switchover from the dual-fuel mode to the mono-fuel mode if and/or as soon as at least one of the following switching conditions exists: a faulty and/or interrupted communication connection between the liquid fuel control device and the gas fuel control device, incorrect operation of the liquid fuel control device, incorrect operation of the gas fuel control device, a limit violation of at least one predetermined limit value of at least one physical quantity of the dual-fuel internal combustion engine, preferably a pressure and /or a temperature, e.g. B.
- a boost pressure of a charge air below a predetermined limit boost pressure and / or a pressure in a gas fuel metering device outside a predetermined pressure range an insufficient amount of gaseous fuel in a gas fuel tank, a leak through which the gaseous fuel escapes , and/or a faulty sensor system for detecting a leak through which the gaseous fuel escapes.
- the switch from dual-fuel mode to mono-fuel mode can be initiated by a) a withdrawal of at least one of the release message, the request message and / or the feedback message, preferably directly and / or without a further message, b) a same sequence as the sequence for switching from mono-fuel mode to dual-fuel mode , and / or c) a withdrawal of the release message, the request message and the feedback message in a different sequence to the sequence for switching from mono-fuel mode to dual-fuel mode.
- a speed and/or a torque of the internal combustion engine can be regulated and/or controllable by the liquid fuel control unit in mono-fuel mode and in dual-fuel mode.
- the liquid fuel control device can be designed to determine a target torque for operating the internal combustion engine in mono-fuel mode and in dual-fuel mode for a predetermined target speed and/or a predetermined pedal value.
- the liquid fuel control device can be connected via signaling to the liquid fuel metering device of the internal combustion engine, preferably a common rail injection system, for metering the liquid fuel.
- the gas fuel control device can be connected via signaling to the gas fuel metering device of the internal combustion engine for metering the gaseous fuel.
- the liquid fuel control device can be designed to regulate and/or control at least one parameter of the liquid fuel metering device, preferably wherein the at least one parameter has at least a metering start time, a metering duration, a metering pressure, a metering number and/or a metering quantity of the liquid to be metered Fuel includes.
- the gas fuel control device can be designed to regulate and/or control at least one parameter of the gas fuel metering device, preferably wherein the at least one parameter has at least a metering start time, a metering duration, a metering pressure, a metering number and/or a metering quantity of the gaseous substance to be metered Fuel includes.
- the at least one parameter of the liquid fuel metering device can be dependent on at least one stored map dependent on an operating point of the internal combustion engine and preferably an actual speed, an actual torque and/or an Actual dosage quantity can be determined, regulated and/or controlled by the liquid fuel control unit.
- the at least one stored map can include at least one map for the mono-fuel mode and at least one map for the dual-fuel mode.
- a switch can be made between the at least one map for the mono-fuel mode and the at least one map for the dual-fuel mode to determine the at least one parameter take place.
- the at least one parameter can be switched successively, preferably along a transfer curve.
- the liquid fuel control device can be designed to regulate and/or control the at least one parameter of the liquid fuel metering device in order to release heat from the metered, gaseous fuel during combustion of the metered, liquid fuel and the metered, gaseous fuel to achieve a predetermined To increase or limit a target speed and/or a target torque in dual-fuel mode so that a smaller amount of nitrogen oxide is produced during combustion than in mono-fuel mode and/or a knocking combustion is avoided.
- the gas fuel control device can be designed to regulate and/or control the at least one parameter of the gas fuel metering device in dual-fuel mode depending on an operating point of the internal combustion engine.
- the gas fuel control device can further be designed to receive a message that includes the operating point from the liquid fuel control device.
- the control device can also be designed to detect a leak through which the gaseous fuel escapes.
- the control device can be connected to the sensor system for detecting the leak in terms of signals.
- a leak can be detected if a detected leak gas mass flow is above a threshold.
- the threshold can e.g. B. between 40 g/min and 60 g/min, in particular 48 g/min.
- a leak may be detectable when a pressure in a gas fuel metering device is below a predetermined pressure threshold. The detection of a leak can be carried out for the internal combustion engine during operation and when the internal combustion engine is switched off.
- the internal combustion engine can be used not only as a drive machine, but also for a motor-generator arrangement (“marine genset”) to provide a combination of a drive, in particular a dual-fuel drive, and an electric drive .
- a motor-generator arrangement (“marine genset”) to provide a combination of a drive, in particular a dual-fuel drive, and an electric drive .
- a vehicle in particular a watercraft, or a stationary application is provided with at least one internal combustion engine as disclosed herein.
- Figure 1 shows a schematic view of a section of an internal combustion engine according to an exemplary embodiment of the present disclosure
- Figure 2 shows a schematic view of a gas introduction device for an internal combustion engine according to an exemplary embodiment of the present disclosure.
- Figure 1 shows schematically a section of an internal combustion engine, preferably a dual-fuel internal combustion engine.
- the internal combustion engine includes a charge air compressor 22, a combustion chamber 50, and a gas fuel supply device 10 for supplying a gaseous fuel, preferably a hydrogen fuel.
- the internal combustion engine can have the usual structure of an internal combustion engine, e.g. B. an intake tract 20, which has the charge air compressor 22, a charge air cooler 26 and an intake manifold 28 connected in series.
- the charge air compressor 22 can be part of a turbocharger, with a turbine 42 of the turbocharger being arranged in an exhaust tract 40 of the internal combustion engine.
- the gas fuel supply device 10 opens into a charge air supply connection between the charge air compressor 22 and the combustion chamber 50.
- the gas fuel supply device 10 can in particular comprise a gas introduction device 18, via which the gas fuel supply device 10 opens into the charge air supply connection.
- the gas fuel supply device 10 can preferably open into a connecting section 24 of the charge air supply connection between the charge air compressor 22 and the charge air cooler 26.
- gas fuel supply device 10 can open into a charge air supply section of the charge air supply connection between the charge air cooler 26 and the combustion chamber 50, e.g. B. in the inlet manifold 28.
- a quantity of the gaseous fuel, e.g. B. a hydrogen stream can thus be introduced into the charge air supply connection by means of the gas fuel supply device 10, where the gaseous fuel is mixed with the charge air.
- This mixture of charge air and the gaseous fuel, e.g. B. a charge air-hydrogen mixture can then flow into the charge air cooler 26, the intake manifold 28 and finally into at least one inlet channel with an inlet valve 32 in at least one cylinder 30.
- an exhaust gas generated in the process can flow out of the at least one cylinder 30 through at least one outlet channel with an exhaust valve 34 and drive the turbine 42 of the turbocharger 40, which in turn can drive the charge air compressor 22 of the turbocharger in order to maintain a boost pressure of the charge air .
- the gas fuel supply device 10 may include a gas fuel metering device 14 for controllably metering the gaseous fuel.
- the gas fuel metering device 14 can include at least one controllable valve 14-2, preferably at least one metering valve, for controllably metering the gaseous fuel.
- the gas fuel metering device 14 may include a distribution volume 14-1 and a collection volume 14-3.
- the distribution volume 14-1 and the collecting volume 14-3 can be fluidly connected exclusively via the at least one controllable valve 14-2. Accordingly, the at least one controllable valve 14-2 can be designed for controllable metering of the gaseous fuel from the distribution volume 14-1 into the collection volume 14-3.
- the gas fuel supply device 10 includes the gas introduction device 18 and the gas fuel metering device 14, the gas introduction device 18 and the gas fuel metering device 14 are expediently fluidly connected, in particular via a double-walled connection 16. Furthermore, the gas fuel metering device 14 may have a double-walled wall construction. Furthermore, a double-walled gas supply connection 12 may be provided in order to supply the gaseous fuel to the gas fuel metering device 14.
- the double-walled wall construction of the gas fuel metering device 14 and / or the double-walled gas supply connection 12 can be fluidly connected to one another in order to remove the gaseous fuel in the event of a leak be connected.
- the double-walled connection 16, the double-walled wall construction of the gas fuel metering device 14 and/or the double-walled gas supply connection 12 can also have a sensor system 60.
- the sensor system 60 can preferably be arranged on an end region of the double-walled gas supply connection 12 facing away from the double-walled wall construction.
- Figure 2 shows the gas introduction device 18 according to an exemplary embodiment, wherein the gas introduction device 18 can be designed in particular for essentially uniformly distributed gas introduction, preferably gas injection, into the charge air supply connection, in particular the connecting section 24.
- the gas introduction device 18 can be designed in particular for essentially uniformly distributed gas introduction, preferably gas injection, into the charge air supply connection, in particular the connecting section 24.
- the gas introduction device 18 can have a gas inlet 18-1, which can in particular be arranged essentially parallel to the at least one charge air passage 18-4.
- the gas introduction device 18 can have at least one charge air passage 18-4, which is arranged in the charge air supply connection and/or which forms a section of the charge air supply connection.
- the gas introduction device 18 can be designed as an injection ring (and/or injection ring and/or “injection ring”) and/or have an interior space and/or annular space 18-2 for feeding the gaseous fuel, preferably in the direction of the at least one charge air passage 18-4 , to divide.
- the gas introduction device 18 can also have several, preferably parallel, charge air passages 18-4, e.g. B. have two charge air passages 18-4.
- the interior and/or annular space 18-2 of the gas introduction device 18 can be designed over the Gaseous fuel admitted to gas inlet 18-1 is divided into the multiple charge air passages 18-4.
- a plurality of gas passages 18-3 can be arranged in a circumferential surface of the at least one charge air passage 18-4, preferably evenly distributed in the circumferential direction of the at least one charge air passage 18-4. Furthermore, each of the gas passages 18-3 can each have a gas nozzle.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022107550.8A DE102022107550A1 (de) | 2022-03-30 | 2022-03-30 | Brennkraftmaschine |
| PCT/EP2023/058122 WO2023186973A1 (de) | 2022-03-30 | 2023-03-29 | Brennkraftmaschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4500000A1 true EP4500000A1 (de) | 2025-02-05 |
Family
ID=86007295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23717053.5A Withdrawn EP4500000A1 (de) | 2022-03-30 | 2023-03-29 | Brennkraftmaschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4500000A1 (de) |
| DE (1) | DE102022107550A1 (de) |
| WO (1) | WO2023186973A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5595163A (en) * | 1995-06-06 | 1997-01-21 | Hitachi America, Ltd. | Apparatus and method for controlling the fuel supply of a gas-fueled engine |
| DE19754354C1 (de) | 1997-12-08 | 1999-07-01 | Man B & W Diesel Ag | Diesel-Gasmotor |
| AU2001261245A1 (en) | 2000-05-08 | 2001-11-20 | Cummins, Inc. | Multiple operating mode engine and method of operation |
| JP2002371917A (ja) * | 2001-04-13 | 2002-12-26 | Mitsubishi Heavy Ind Ltd | ガスエンジンのガス噴射装置 |
| EP1400670B1 (de) * | 2002-09-23 | 2005-12-21 | ABB Turbo Systems AG | Verfahren und Vorrichtung zum Betreiben eines Abgasturboladers |
| US8640456B2 (en) * | 2011-11-30 | 2014-02-04 | Cummins Intellectual Property, Inc. | Charge air cooler assembly |
| FI124874B (fi) * | 2012-11-13 | 2015-02-27 | Wärtsilä Finland Oy | Kaasunsyöttöjärjestelmä mäntämoottorille ja asennusmenetelmä |
| DE102014222419A1 (de) | 2014-08-04 | 2016-02-04 | Volkswagen Aktiengesellschaft | Verfahren zum Betreiben einer selbstzündenden Brennkraftmaschine und selbstzündende Brennkraftmaschine |
| US9518516B2 (en) * | 2015-01-13 | 2016-12-13 | Southwest Research Institute | State-based diesel fueling for improved transient response in dual-fuel engine |
| EP3256713B1 (de) * | 2015-02-09 | 2019-04-03 | Wärtsilä Finland Oy | Zur verwendung in einem kraftstoffversorgungsleitungssystem eines kolbenverbrennungsmotors konfiguriertes kraftstoffversorgungselement und kraftstoffversorgungsleitungssystem |
-
2022
- 2022-03-30 DE DE102022107550.8A patent/DE102022107550A1/de active Pending
-
2023
- 2023-03-29 EP EP23717053.5A patent/EP4500000A1/de not_active Withdrawn
- 2023-03-29 WO PCT/EP2023/058122 patent/WO2023186973A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022107550A1 (de) | 2023-10-05 |
| WO2023186973A1 (de) | 2023-10-05 |
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