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Compressed air energy storage and recovery system and method with constant volume heating
The invention is a compressed gas energy storage and recovery system and method, of AACAES type. The system and the method according to the invention heats at constant volume stored compressed gas to increase the pressure of the stored compressed gas.... Ifp Energies Nouvelles
The invention concerns a catalyst comprising at least one zeolite with structure type MTW, a matrix, at least one metal from group VIII of the periodic classification of the elements, said catalyst having a mesopore volume increased by at least 10% compared with its initial mesopore volume, which is generally... Ifp Energies Nouvelles
Process for the treatment of a gasoline by separation into three cuts
e) carrying out a second step for desulphurization of the second heavy gasoline cut... Ifp Energies Nouvelles
Method for exploitation and/or monitoring of an aquifer comprising at least one dissolved gas
The invention is a method for the exploitation and/or monitoring of an underground formation having at least one reservoir comprising water, at least one gas species of interest and at least one atmospheric isotope of at least one rare gas present in dissolved form in the water of the reservoir.... Ifp Energies Nouvelles
Compact combined mixing and distribution device
characterised in that said mixing zone is disposed at the same level as the distribution zone, said mixing and distribution zones being delimited by at least one annular wall comprising at least one lateral passage section adapted for the passage of the fluids from said mixing zone to said distribution... Ifp Energies Nouvelles
Catalyst comprising gold homogeneously dispersed in a porous support
A catalyst comprising gold and a porous support containing at least one refractory oxide, in which the gold content is in the range 0.01% to 5% by weight with respect to the total weight of catalyst, and in which the particles of gold are distributed homogeneously through said porous support... Ifp Energies Nouvelles
Inclined bed reactor permitting a small quantity of catalyst to be employed
The present invention describes a type of inclined bed reactor which permits a small quantity of catalyst to be employed. Application of the reactor to a regenerative reforming process.... Ifp Energies Nouvelles
Catalyst comprising dispersed gold and palladium, and its use in selective hydrogenation
the gold/palladium molar ratio is more than 2.... Ifp Energies Nouvelles
Method for producing 1,3-butadiene from 1,4-butanediol
One step for pyrolysis of 1,4-butanediol diester, producing butadiene.... Ifp Energies Nouvelles
A catalyst is described comprising at least one IZM-2 zeolite containing silicon atoms and aluminium atoms, at least one matrix and at least one metal from group VIII of the periodic classification of the elements, the zeolite having a ratio between the number of moles of silicon and the number... Ifp Energies Nouvelles
Method for operating a hydrocarbon deposit by injection of a gas in foam form
Applicable notably to oil exploration and operation.... Ifp Energies Nouvelles
Method of segmenting the image of an object reconstructed by three-dimensional reconstruction
The invention is a method for the segmentation of an object's image obtained by three-dimensional reconstruction. as Based on an object's image represented by a finite number of intensity levels, the image is reconstructed based on projections acquired from different angles around the object, a distribution representative of the spread... Ifp Energies Nouvelles
Methods for the preparation of alumina beads formed by dewatering a highly dispersible gel
A process for the preparation of an alumina in the form of beads with a sulphur content in the range 0.001% to 1% by weight and a sodium content in the range 0.001% to 1% by weight with respect to the total mass of said beads is described, said beads... Ifp Energies Nouvelles
According to the invention, the method consists in blocking sun gear (72) and crown (86) of machine epicyclic gear train (68) to provide motion of the vehicle by machine (20) alone or in combination with engine (10).... Ifp Energies Nouvelles
Method for esterification of a diol using a reactive distillation
A water elimination step that is fed with distillate from the esterification step that comprises water and producing at least one water effluent.... Ifp Energies Nouvelles
Method for softening sulfide-type compounds of an olefinic gasoline
This invention relates to a method for reducing the content of sulfide-type compounds of formula R1-S—R2, with R1 and R2 selected from among the methyl (CH3) and ethyl (C2H5) radicals, of a gasoline that contains diolefins, monoolefins, and sulfur. The method implements a first catalytic step for selective hydrogenation of... Ifp Energies Nouvelles
Container for a system for storing and restoring heat, comprising a double wall formed from concrete
The invention relates to a container (200) for a heat storage and restitution system, comprising a vessel in which a gas is circulating in order to be cooled or heated. The vessel is limited by a first jacket formed from concrete (203) surrounded by a thermally insulating layer (206), which... Ifp Energies Nouvelles
The invention is a container (200) for a system for storing and restoring heat, comprising a vessel including means for injecting and withdrawing a gas to be cooled or reheated. The vessel is limited by a first jacket formed from concrete (203) surrounded by a thermally insulating layer (206), which... Ifp Energies Nouvelles
Method for preparing a nanometric zeolite y
Preparation of a FAU-structural-type nanometric zeolite Y having a crystal size of less than 100 nm and an Si/Al ratio that is greater than 2: mixing, in aqueous medium, of at least one AO2 source of at least one tetravalent element A that is silicon, germanium, and/or titanium, at least... Ifp Energies Nouvelles
Hybrid vehicle powertrain with a device for connecting/disconnecting the electric machine
The present invention is a powertrain for a hybrid vehicle, comprising a driving/receiving machine (20), a thermal engine (10) and engine shaft (12), a speed variation device (14) including an engine epicyclic gear train (24) with a sun gear (34) and a crown (42) which are each connected to the... Ifp Energies Nouvelles
The present invention describes a process for steam reforming natural gas, comprising a steam reforming exchanger-reactor (3000), a reactor for converting CO to CO2 (3100), and a PSA hydrogen purification unit (4300), with a view to producing a synthesis gas in which the heat necessary for the steam reforming reaction... Ifp Energies Nouvelles
Heavy metal capture mass with improved performances
it being understood that the ratio between the mesopore volume and the macropore volume (V6 nm-100 nm/V100 nm) is in the range 1 to 5.... Ifp Energies Nouvelles
The component introduced at step (a) can be chosen from the group consisting of thiols, sulfides, disulfides.... Ifp Energies Nouvelles
The invention concerns a process for the treatment of a hydrocarbon feed in order to obtain a heavy hydrocarbon fraction with a low sulphur content, said process comprising the following steps: a) an optional step for hydrodemetallization carried out in permutable reactors, b) a step for fixed bed hydrotreatment of... Ifp Energies Nouvelles
Process for the production of cellulolytic and/or hemicellulolytic enzymes
The process for the production of cellulolytic and/or hemicellulolytic enzymes by a cellulolytic and/or hemicellulolytic microorganism according to the present invention comprises at least one phase for growth in the presence of a source of carbon and at least one phase for production in the presence of an inducing substrate,... Ifp Energies Nouvelles
According to the invention, the product comprises a mixture of a reductant containing ammonia or a compound generating ammonia by decomposition, or a hydrocarbon from a hydrocarbon-containing substance, oxygenated or not, and of an additive for catalysing particle oxidation.... Ifp Energies Nouvelles
Isomerizing dehydration of feedstock containing a primary alcohol substituted in position 2 by an alkyl group in which the feedstock is heated to the reaction temperature by indirect heat exchange then vaporization by mixing with a diluent effluent, the diluted and vaporized feedstock being dehydrated in at least one dehydration... Ifp Energies Nouvelles
Method of exploitation of hydrocarbons of an underground formation by means of optimized scaling
The invention is a method for exploitation of a sedimentary basin containing hydrocarbons, including optimized scaling of the geological model. Based on categorical property measurements, a first meshed representation of a formation is constructed reflecting the categorical property measurements. At least one second meshed representation having a lower resolution is... Ifp Energies Nouvelles
Process for removing oxygenated contaminates from an ethylene stream
The present invention is, in a first embodiment, a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a... Ifp Energies Nouvelles
The present invention relates to a powertrain for a motor vehicle comprising a thermal engine (10), a variable-speed transmission device (14) including an engine epicyclic gear train (26) with a sun gear (36) carried by a hollow shaft (42) and a crown gear (56) carried by a hollow shaft (62)... Ifp Energies Nouvelles
FIG. 2 to be published.... Ifp Energies Nouvelles
System for compensating heaving for an element hooked onto movable equipment
The present invention relates to a motion compensation system for an element hanging from a mobile unit, the system comprising two blocks, at least two articulated arms, a compensation cylinder and a cable. According to the invention, at least one characteristic length of the articulated system (for example: the length... Ifp Energies Nouvelles
The invention relates to a plant and to a method for chemical looping oxidation-reduction combustion of a gaseous hydrocarbon feed, for example natural gas essentially containing methane. According to the invention, catalytic pre-reforming of the feed is performed in a pre-reforming zone comprising a fixed reforming catalyst, while benefiting from... Ifp Energies Nouvelles
The invention relates to a method and to a plant for chemical looping oxidation-reduction combustion (CLC) of a gaseous hydrocarbon feed, for example natural gas essentially containing methane. According to the invention, catalytic reforming of the feed is performed within the reduction zone where combustion of the feed is conducted... Ifp Energies Nouvelles
Process and chemical looping redox combustion with control of the heat exchanges
The invention relates to a process and to a unit for chemical looping oxidation-reduction combustion of a hydrocarbon feed, wherein heat exchanges are controlled through a level variation of a dense fluidized bed of active mass particles in an external heat exchanger (E1, E2), positioned on a transport line carrying... Ifp Energies Nouvelles
The present invention describes a device for supplying the catalytic zone of a reactive distillation column using a liquid stream as the reaction stream, the flow of liquid in the reactive zone being of the upflow type and gas not encountering the liquid in the reactive zone.... Ifp Energies Nouvelles
A fluid mixing and distribution device for a catalytic downflow reactor, said device comprising a collection zone (A), a mixing zone (B) comprising a mixing chamber (15) for fluids and an exchange chamber (16) for fluids, a distribution zone (C), said exchange chamber (16) comprising at least one upper lateral... Ifp Energies Nouvelles
The present invention describes a type of radial bed reactor which can allow a small quantity of catalyst to be used. Application to a regenerative reforming process reactor.... Ifp Energies Nouvelles
The invention also relates to a process for preparing the said adsorbent and to the uses thereof, especially for separating xylene isomers.... Ifp Energies Nouvelles
The present invention relates to a zeolite-based adsorbent comprising at least one zeolite of FAU structure of LSX type and comprising barium and/or potassium, in which the outer surface area of said zeolite-based adsorbent, measured by nitrogen adsorption, is between 20 m2·g−1 and 100 m2·g−1, limits inclusive. The present invention... Ifp Energies Nouvelles
A treatment under water vapor of the solid that is obtained in step b) is carried out at a temperature of between 110 and 195° C. for a length of time of between 30 minutes and 4 hours, in the presence of an air/vapor mixture that comprises between 2 and... Ifp Energies Nouvelles
The present invention relates to a catalyst composition comprising a modified crystalline aluminosilicate of the Framework Type FER having Si/Al framework molar ratio greater than 20 characterized in that in said modified crystalline aluminosilicate the ratio between the strong acid sites and the weak acid sites, S/W, is lower than... Ifp Energies Nouvelles
The invention concerns a process for the production of butadiene from an ethanol feed comprising at least 80% by weight of ethanol, comprising at least one step A) for the conversion of ethanol into acetaldehyde A), a step B) for converting an ethanol/acetaldehyde mixture into butadiene, a step C1) for... Ifp Energies Nouvelles
c) fractionating, in a splitter, the at least partially desulphurized intermediate gasoline cut MCN which has not undergone catalytic treatment subsequent to step b), in a manner such as to recover an intermediate gasoline with low sulphur and mercaptans contents from the column head and a cut of hydrocarbons containing... Ifp Energies Nouvelles
the section of said mixing chamber (9) is a parallelogram and has at least one means (15) deflecting over at least one of the four internal walls of mixing chamber (9) with a parallelogram section.... Ifp Energies Nouvelles
The invention concerns a process for the production of butadiene from an ethanol feed comprising at least 80% by weight of ethanol, comprising a step for conversion of ethanol to acetaldehyde, a step for the extraction of butadiene, a step for scrubbing gaseous by-products with water, a step for eliminating... Ifp Energies Nouvelles
A supported catalyst having a calcined, predominantly aluminium, oxide support and an active phase of 5 to 65% by weight nickel with respect to the total mass of the catalyst, said active phase having no group VIB metal, the nickel particles having a diameter less than or equal to 20... Ifp Energies Nouvelles
The invention concerns a process for preparing a catalyst comprising at least one metal M from the platinum group, tin, a phosphorus promoter, a halogenated compound, a porous support and at least one promoter X1 selected from the group constituted by gallium, indium, thallium, arsenic, antimony and bismuth. The promoter... Ifp Energies Nouvelles
The invention is a system for controlling the relative movement of a load P, comprising at least one main damper having a longitudinal action of stroke C and two ends with one end being connected to a frame and the other being connected to the load. A compensation device is... Ifp Energies Nouvelles
The present invention relates to a zeolite absorbent comprising at least one FAU zeolite with hierarchical porosity and comprising barium or barium and potassium, and the external surface area of which is greater than 20 m2·g−1, and the non-zeolite phase content being between 6% and 12% by weight with respect... Ifp Energies Nouvelles
The invention relates to a composition that contains a first semiconductor SC1, particles that comprise one or more element(s) M in the metal state selected from among an element of groups IVB, VB, VIB, VIIB, VIIIB, IB, IIB, IIIA, IVA and VA of the periodic table, and a second semiconductor... Ifp Energies Nouvelles
The present invention relates to an adsorbent comprising an alumina support and at least one alkali element, said adsorbent being obtained by introducing at least one alkali element, identical to or different from sodium, onto an alumina support the sodium content of which, expressed as Na2O equivalent, before the introduction... Ifp Energies Nouvelles
The invention relates to a method for separating meta-xylene from C8 aromatic fractions, using a zeolitic adsorbent based on sodium-exchanged or sodium-and-lithium-exchanged agglomerated crystals of zeolite Y, with a large external surface area.... Ifp Energies Nouvelles
The invention comprises at least one gas compressor, at least one compressed gas storage, at least one expander for expanding the compressed gas for generating energy, and at least one heat storage, wherein the heat storage comprises a staged arrangement at least two fixed beds of heat storage particles and... Ifp Energies Nouvelles
The invention relates to a composition that contains a first semiconductor SC1, particles that comprise one or more element(s) M in the metal state selected from among an element of groups IVB, VB, VIB, VIIB, VIIIB, IB, IIB, IIIA, IVA and VA of the periodic table, and a second semiconductor... Ifp Energies Nouvelles
The invention relates to zeolitic absorbents based on at least one zeolite with hierarchical porosity, containing barium or barium and potassium, to the uses thereof for separating para-xylene from aromatic fractions containing 8 carbon atoms, and to the method for separating para-xylene from aromatic fractions containing 8 carbon atoms.... Ifp Energies Nouvelles
The invention is a method for processing seismic data to eliminate the coherent noise arising from multiple seismic reflections. A decomposition procedure is applied to decompose along N directions of decomposition seismic data into a set of N components. At least one model of multiple reflections is decomposed according to... Ifp Energies Nouvelles
The present invention describes a process for the production of high-purity paraxylene from a xylenes cut capable of containing ethylbenzene and C9 compounds, said process using two simulated moving bed separation units operating in series and two isomerization units.... Ifp Energies Nouvelles
The present invention describes a process for the production of high-purity paraxylene from a xylenes cut containing xylenes and ethylbenzene, a process using two simulated moving bed separation units and two isomerization units.... Ifp Energies Nouvelles
The invention concerns a process for fractionating hydrocarbon feeds employing at least one fractionation zone provided with separation contact means, and at least two switchable bottom zones which can be connected to the bottom of the fractionation zone in a manner such that at least a first of the bottom... Ifp Energies Nouvelles
a step of cooling said must to a temperature below the temperature of the enzyme production step and for a time such that the beta-glucosidase concentration of the liquid originating from the cooling step is greater than that of the liquid originating from the enzyme production step, and/or the solid... Ifp Energies Nouvelles
The present invention is a device for controlling a quantity of air introduced into an inlet of a boosted internal combustion engine with the engine having exhaust gas outlets each connected to an exhaust manifold of at least one cylinder. The device includes a boosting device comprising a turbocharger having... Ifp Energies Nouvelles
Application notably to oil exploration and exploitation.... Ifp Energies Nouvelles
The present invention relates to a method for optimizing a fluid deposit traversed by a fracture network. For this method, the deposit is discretized in a meshed representation, a “dual medium” approach is used, and the exchange flows are determined between the meshes, together with corrective factors. The corrective factors... Ifp Energies Nouvelles
The invention is an improved wave energy conversion system (1, 2) including a model predictive control method for an energy conversion machine (1) that maximizes the power output by accounting for the energy conversion efficiency and a wave motion prediction (3).... Ifp Energies Nouvelles
The present invention describes a process for the production of high-purity paraxylene based on a xylene cut, a process using one simulated mobile bed separation unit and two isomerization units, one in gas phase and the other in liquid phase.... Ifp Energies Nouvelles
The present invention relates to a production method for hydrocarbons contained in an underground formation penetrated by at least one well. The method is based on the determination of at least one productivity index IP dependent on the temperature and pressure.... Ifp Energies Nouvelles
The invention relates to an absorbent solution for absorbing acid compounds, such as hydrogen sulfide and carbon dioxide, in a gaseous effluent, containing water and a mixture of amines comprising 1,2-bis-(2-dimethylaminoethoxy)-ethane and 2-[2-(2-dimethylaminoethoxy)-ethoxy]-ethanol, of respective formulas (I) and (II) below, and to a method of removing acid compounds contained in... Ifp Energies Nouvelles
Two motion transmission tracks (T1, T2) are found between drive shaft (12) and driven shaft (38) comprising a toothed wheel (14, 42) carried by the drive shaft. The driven shaft through a one-way clutch (20, 46), a toothed wheel (34, 36) fixedly carried by the intermediate motion transmission shaft and... Ifp Energies Nouvelles
This invention describes a moving-bed catalyst reactor having radial flow of the feedstock called moving-bed radial reactor, consisting of 3 zones called upper hemispheric body (III), lateral zone (II), and lower hemispheric body (I), the three zones being connected together by means of flanges.... Ifp Energies Nouvelles
The present invention relates to a process for the selective hydrogenation of a feed of hydrocarbons containing polyunsaturated molecules comprising at least 3 carbon atoms, using a single principal fixed bed reactor R1 containing at least two catalytic beds A1 and A2 and a fixed bed guard reactor which is... Ifp Energies Nouvelles
Application in particular to the exploration and exploitation of hydrocarbon deposits.... Ifp Energies Nouvelles
The invention relates to anchoring systems for floating bases for the production of energy at sea (floating wind turbine, wave energy, floating hydraulic turbines, ETM platform, etc.) and/or for petroleum exploitation at sea, constituted by at least one anchoring line which comprises at least one portion which is constituted by... Ifp Energies Nouvelles
The present invention relates to a method for exploitation of a sedimentary basin. Exploitation of the sedimentary basin is permitted by the choice of zones of interest within the basin, the zones being determined by means of maps of total organic carbon TOC and of hydrogen index HI of at... Ifp Energies Nouvelles
The injection feeds fuel into the combustion chamber with a different flow rate for each sheet for dedicated targeting in the mixing zones of the combustion chamber.... Ifp Energies Nouvelles
The present invention relates to a process for the production of a mixture of ethylene and propylene from a mixture containing ethanol and n-propanol and having a water content comprised between 30 and 75% by weight with respect to the total weight of the mixture.... Ifp Energies Nouvelles
The present invention relates to a system and a method for exchanging heat between a fluid (F) and heat storage particles (3). The exchange system comprises an exchange zone (2) in which the fluid (F) and the heat storage particles in a fluidized bed flow as a countercurrent flow and... Ifp Energies Nouvelles
The present invention relates to an AACAES system and method in which balls make it possible to store heat. The heat exchanges are produced by means of at least one radial heat exchanger, in which the balls and a first fluid circulate, the first fluid passing radially through means for... Ifp Energies Nouvelles
a) to c) being performed within an extruder.... Ifp Energies Nouvelles
and in which, said vacuum residue fraction is supplied to a deasphalting step, resulting in a deasphalted vacuum residue fraction, at least a portion thereof being mixed with at least a portion of said filtrate from the filtration step 2) to form said composition.... Ifp Energies Nouvelles
The present invention relates to the expression and optimisation of enzymes involved in the breakdown of lignocellulosic biomass. The present invention specifically relates to variants of the exoglucanase 1 of Trichoderma reesei, as well as to the use of said variants with improved efficiency in methods for breaking down cellulose... Ifp Energies Nouvelles
The present invention relates to the expression and optimisation of enzymes involved in the breakdown of lignocellulosic biomass. The present invention specially relates to variants of the exoglucanase 2 of Trichoderma reesei, as well as to the use of said variants with improved efficiency in methods for breaking down cellulose... Ifp Energies Nouvelles
There is described a hydroprocessing process of at least one gas oil cut having a weighted mean temperature (TMP) between 240° C. and 350° C. using a catalyst comprising at least one metal of the group VIB and/or at least one metal of the group VIII of the periodic classification... Ifp Energies Nouvelles
Use of the catalyst in hydrotreating processes, in particular hydrotreating of heavy feedstocks.... Ifp Energies Nouvelles
The present invention concerns a process for the production of an aqueous mixture comprising isopropanol, n-butanol and ethanol, comprising a step in which an aqueous solution containing C5 and/or C6 sugars and acetate is fermented under strict anaerobic conditions in the presence of a fermenting microorganism of the genus Clostridium... Ifp Energies Nouvelles
The present invention relates to an AACAES system and method in which a heat transfer fluid makes it possible to store heat. The heat transfer fluid, which comprises balls of heat storage material, circulates between two tanks: a hot tank and a cold tank, and passes through at least one... Ifp Energies Nouvelles
The invention relates to a supported catalyst that comprises an oxide substrate that is for the most part calcined aluminum and an active phase that comprises nickel, with the nickel content being between 5 and 65% by weight of said element in relation to the total mass of the catalyst,... Ifp Energies Nouvelles
and a total pore volume, as measured by mercury porosimetry, of 0.8 mL/g or more.... Ifp Energies Nouvelles
A description is given of a process for hydrotreatment of at least one hydrocarbon feedstock having a weighted average temperature (WAT) of more than 380° C. using at least one catalyst containing at least one metal from Group VIB and/or at least one metal from Group VIII of the periodic... Ifp Energies Nouvelles
The invention concerns a catalyst comprising a calcined oxide matrix which is mainly alumina and an active phase comprising nickel, said active phase being at least partially co-mixed within said calcined oxide matrix which is mainly alumina, the nickel content being in the range 5% to 65% by weight of... Ifp Energies Nouvelles
h) an impregnation step of the hydro-dehydrogenating active phase on the support obtained in the step g).... Ifp Energies Nouvelles
the use of the catalyst in hydroproces sing, including hydroproces sing heavy feeds.... Ifp Energies Nouvelles
An amorphous mesoporous alumina having a connectivity (Z) greater than 2.7 is described. The present invention also relates to the process for preparing the said alumina, comprising at least one precipitation step of at least one aluminium salt, at least one heating step of the suspension obtained, a thermal treatment... Ifp Energies Nouvelles
The present invention also discloses the method for preparing said gel comprising at least one step of precipitating at least one aluminium salt, at least one step of heating the suspension obtained and a final heat treatment step for forming the alumina gel.... Ifp Energies Nouvelles
h) impregnating of the hydrogenating-dehydrogenating active phase on the alumina oxide support. Catalyst prepared by this process and use of this catalyst for hydrotreating or hydroconverting heavy hydrocarbon feedstocks.... Ifp Energies Nouvelles
The present invention is a fuel injection method for a compression-ignition internal-combustion engine running in single-fuel or multi-fuel mode. The engine has at least a cylinder (10), a piston (16) sliding in the cylinder, a combustion chamber (34) comprising two mixing zones (Z1, Z2) which are defined on one side... Ifp Energies Nouvelles
1,1′-oxybis[3-(dimethylamino)-2-propanol]... Ifp Energies Nouvelles
a) precipitating a basic precursor and an acidic precursor, at least one of which comprises aluminium, at a pH of 8.5 to 10.5, a temperature of 20° C. to 90° C. and for 2 minutes to 30 minutes, with a state of advance of 5% to 13%; b) heating the... Ifp Energies Nouvelles
The process further comprises a step of providing heat to the distillation column by an intermediate reboiler powered with a heat source having a temperature lower than that one of the bottom reboiler.... Ifp Energies Nouvelles
Disclosed are a catalyst, its preparation and use in selective hydrogenation, which catalyst has a porous support grain on which are deposited palladium and silver, and at least one alkali and/or alkaline earth metal; the porous support contains a refractory silica, alumina and/or silica-alumina oxide, where at least 80 wt.... Ifp Energies Nouvelles
According to the invention, the cooling means comprise at least one circumferential gallery (78, 82) concentric to piston bowl (46) and arranged opposite at least one mixing zone (Z1, Z2).... Ifp Energies Nouvelles