Abstract: A tire having an axis of rotation and a median plane (CP) perpendicular to the axis of rotation, and comprising: a crown reinforcement, a tread positioned radially on the outside of the crown reinforcement and axially between two shoulders, comprising a contact face intended to come into contact with the roadway while the tire is being driven on, wherein the tread is primarily made up of at least one rubber compound of given dynamic shear modulus M and comprises a plurality of furrows oriented substantially circumferentially, each furrow having a furrow bottom, and a sub-layer disposed radially on the outside of the crown reinforcement and radially on the inside of the tread, wherein the sub-layer is made up of at least one rubber compound of given dynamic shear modulus A is flush with each furrow bottom.

Abstract: A method of operating an electronic control system of a vehicle includes determining a first braking distance to achieve a first speed of a first vehicle, receiving a second vehicle braking distance to achieve a second vehicle speed of a second vehicle forward of the first vehicle, determining a minimum following distance between the first vehicle and the second vehicle in response to the first braking distance and the second braking distance, and controlling operation of the vehicle with an autonomous control system using the minimum following distance. A computer-implemented fleet management system is configured to receive logistics objectives including load, timeline, and cost information for a freight delivery, receive fleet information including tire parameters of a plurality of vehicles of a fleet, and determine a plurality of trips and a corresponding vehicle selection in response to the logistics objectives and the fleet information.

Abstract: A curved support structure for a non-pneumatic tire and a tire incorporating such support structure. A support membrane extends continuously between a radially-inner end and a radially-outer end and defines opposing sides. A radially-outer joint may be provided on one of the opposing sides while a radially-inner joint may be provided on the other side of the membrane. An annular band may be incorporated with the radially-outer joint. A wheel, hub, or other structure may be incorporated with the radially-inner joint.

Abstract: A tire having a tread with a plurality of blocks 12 provided with at least one sipe 22 extending from the contact face of said block, and having a width that can vary in the direction of its depth, and known as a complex sipe. The tread has a first layer of material 38 and at least one second layer of material 40 radially on the inside of the first layer, the first layer being formed in a first rubber composition and the second layer being formed in a second rubber composition different from the first composition. The complex sipe 22 and the grooves separating the blocks are formed entirely in the first layer of material 38. Laterally on each side of the complex sipe, the second layer of material 40 extends, when viewed in transverse section in the block, beyond the bottom 30 of the complex sipe in the direction of the contact face of the block.

Abstract: An elastomeric laminate comprises at least two adjacent cohesive layers, the first layer consisting of a composition based on 10 to 100 phr of a copolymer of ethylene and of a 1,3-diene of formula CH2?CR—CH?CH2, the ethylene units in the copolymer representing more than 50 mol % of the monomer units of the copolymer, the symbol R representing a hydrocarbon chain having 3 to 20 carbon atoms, from 0 to 90 phr of a diene elastomer having a content by weight of diene unit of greater than 50%, and a crosslinking system; the second layer consisting of a composition based on a diene elastomer having a content by weight of diene unit of greater than 50% and a crosslinking system. Also disclosed is a tire, in particular a tire provided with a sidewall, comprising this composition.

Abstract: The present invention relates to a process for producing butadiene from ethanol, in two reaction steps, comprising a step a) of converting ethanol into acetaldehyde and a step b) of conversion into butadiene, said step b) simultaneously implementing a reaction step and a regeneration step in (n+n/2) fixed-bed reactors, n being equal to 4 or a multiple thereof, comprising a catalyst, said regeneration step comprising four successive regeneration phases, said step b) also implementing three regeneration loops.

Abstract: A heavy truck tire is provided that has a plurality of tread zones located at different locations in a lateral direction of the tread and configured for engaging a road. The first tread zone has a first max tan(?), and a second tread zone located next to the first tread zone in the lateral direction has a second max tan(?) is different than the first max tan(?). The second tread zone is between the first tread zone and a third tread zone. The third tread zone has a third max tan(?) that is the same as or close to the first max tan(?). The first, second and third max tan(?) are all within the range from 0.01-0.30. Also, either the first max tan(?) is at least 0.05 greater than the second max tan(?) or the second max tan(?) is at least 0.05 greater than the first max tan(?).

Abstract: A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being a blocked mercaptosilane of formula (I), as described in the claims; a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.

Abstract: A tire having a tread comprising at least two radially superposed portions which comprise a radially external portion being made of a first rubber composition (FC), and a radially internal portion being made of a second rubber composition (SC); the tread comprising a plurality of tread pattern elements (1) delimited by cut-outs (3, 4); the tread pattern elements (1) respectively comprising at least one lateral face (13, 14, 15, 16) and a contact surface (2) intended to come into contact with the ground during rolling; the external portion of the tread pattern elements (1) being at least partially covered on at least one of the lateral face(s) (13, 14, 15, 16) with a layer of a third rubber composition (TC).

Abstract: A tire comprises a fluorescent rubber composition based on at least an elastomer matrix, a reinforcing filler comprising between 0 and 50 phr of carbon black and between 2.5 and 15 phr of a fluorescent pigment.

Abstract: A copolymer of ethylene and of a 1,3-diene of formula CH2?CR—CH?CH2 is provided. The ethylene units represent between 50 mol % and 95 mol % of the ethylene units and of the units of the 1,3-diene, and the units of the 1,3-diene of 1,2 and 3,4 configuration represent more than 50 mol % of the units of the 1,3-diene. The symbol R represents a hydrocarbon chain having from 3 to 20 carbon atoms. Such a copolymer exhibits an improved compromise between the degree of crystallinity and the stiffness and makes it possible to widen the field of application of ethylene-rich diene copolymers in rubber compositions.

Abstract: Tread (1) for a heavy-duty vehicle tire having a total thickness corresponding to the thickness of material to be worn away during running, this tread having, in the new state, a tread surface (10) intended to come into contact with a roadway when running. The tread comprises at least one hidden cavity (2) forming a new groove opening onto the tread surface after a predetermined amount of partial wear. Cavity (2) comprises two opposite lateral walls (21, 22) connected together by bottom (23) radially towards the inside and by crown part (24) radially towards the outside. Crown part (24) is provided with a plurality of fine grooves (25) extending radially towards the outside from crown part (24) delimiting the cavity and extending in a direction that makes an angle at least equal to 40 degrees with the main direction of cavity (2).

Abstract: A rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising a filler covered at least partially by silica and a crosslinking system. The dispersion of the filler in the elastomeric matrix has a Z score greater than or equal to 70, and the composition is devoid of agent for coupling the filler with the elastomer.

Abstract: A metallic or metallized reinforcer has at least a surface of which is at least partially metallic, the at least partially metallic surface being coated with a polybenzoxazine sulfide whose repeating units include at least one unit corresponding to formula (I) or (II): in which the two oxazine rings are connected together via a central aromatic group, the benzene ring of which bears one, two, three or four groups of formula —Sx—R in which “x” is an integer from 1 to 8 and R represents hydrogen or a hydrocarbon-based group including 1 to 10 carbon atoms and optionally a heteroatom chosen from O, S, N and P. Such a reinforcement can be used for the reinforcement of a rubber article, in particular a motor vehicle tire.

Abstract: A fastening system for fastening an electronic device (2) in a measurement housing (1), comprising: an electronic-device holder (10) designed to accommodate an electronic measurement device (2); and a prestressing ring (20) that is able to cooperate with said holder (10) for assembly and comprises a plurality of prestressing beams (22, 25) designed to bear on said electronic device (2) when said ring is assembled together with the holder, said electronic device (2) being inserted into said holder (10).

Abstract: A method for testing the wear of tires running on a rolling road comprises the following steps: using the construction data of the vehicle and a dynamic equilibrium model, determining the relationship between the speed and the accelerations at the centre of gravity of the vehicle, and the angles and directional forces applied on a given axle; continuously recording the speed and the accelerations of a vehicle travelling on a predetermined route; and disposing the two tires belonging to a same axle on the rolling road and, depending on the recorded speed and acceleration values, the values of the angle of camber, load and longitudinal forces are applied, at all times, on each of the wheels of the axle.

Abstract: A non-pneumatic wheel having a hub, an outer tread band and a plurality of spokes connecting the hub with the outer tread band, each of the plurality of spokes having first and second spoke elements joined by a body comprised of an elastomer connecting the first spoke element to the second spoke element.