Tire provided with a protuberance for deflecting lateral sprays

A heavy-vehicle tire, comprising:

• two beads intended to be in contact with a mounting rim,
• a crown provided with a tread having a running surface intended to come into contact with the ground during travel,
• two sidewalls providing the connection between this tread and the beads,
• a carcass reinforcement extending from one bead to the other,
• a reinforcement armature for the crown, located radially to the outside of the carcass reinforcement, this crown reinforcement comprising at least two working plies provided with reinforcements,
• a circumferentially extending protuberance projecting from at least one of the sidewalls, this protuberance being limited by a radially outer upper wall and a radially inner lower wall, said upper and lower walls having upper and lower profiles, respectively, the intersection of said walls occurring along a circumferentially extending line joining a point C, on a respective sectional plane of the tire, which is located axially farthest to the outside of said protuberance, the angle α between the axial direction and a straight line tangent both to the edge of the tread and to the protuberance being less than 45°,
• the tire, viewed in meridian section, is characterized in that:
• the point of intersection C of the profiles of the upper and lower walls of the protuberance is located at a distance from the equatorial plane XX which is at most equal to half the distance L between the points M of the sidewalls which are axially farthest when the tire is subjected to its rated conditions of pressure and of load, and the distance of the point C or the axis of rotation is greater than the distance of said points M relative to the same axis,
• the upper profile of the protuberance extends from the point C and joins the sidewall profile at a point K, defined as the intersection of the outer profile of the tire with the extension of the average profile of the radially outermost ply of the crown reinforcement, at least a portion of the upper profile of the protuberance adjacent to the point K extending radially to the inside of the average profile of the radially outermost ply of the crown reinforcement,
• the angle δ between a first straight line D1 and a second straight line D2 is greater than or equal to 60°, the first straight line D1 being defined as the straight line passing through the point K and tangent to the upper profile of the protuberance and the second straight line D2 being defined as the straight line passing through the point K and tangent to the profile of the sidewall which extends radially to the outside of the upper profile of the protuberance from said point K.