Abstract: A piston for an internal combustion engine may include a piston skirt extending in a piston longitudinal direction and defined in the piston longitudinal direction by a piston head. The piston skirt may include a boxed interior space defined by two box walls and two substantially opposing skirt walls. A boss having a through-opening may be arranged on each of the two box walls, the two through-openings being oriented so that they align with one another. The two box walls may each include a boss portion oriented perpendicularly to the boss, and at least one intermediate portion extending between the respective boss portion and one of the skirt walls. The intermediate portion may merge via a bend into the associated boss portion. A radial extent of the boss portion may be greater than a diameter of the through-opening and at least 50% of a diameter of the piston.

Abstract: A piston for an internal combustion engine including a piston crown and a combustion chamber recess recessed therein, the combustion chamber recess including a recess edge. The piston may also include a ring groove for receiving a piston ring. The piston may further include a cooling duct having a smaller spacing from the piston crown than that of a flank of the ring groove, the cooling duct defining a minimum spacing from the piston crown at a first location, and a minimum spacing from the combustion chamber recess at a second location. The cooling duct may have a rounded portion between the first location and the second location. The cooling duct may have a maximum spacing from the recess edge at a third location. The rounded portion may have a rounding radius defined at least at the third location that is greater than 4% of a piston diameter.

Abstract: A piston for an internal combustion engine may include a piston skirt extending in a piston longitudinal direction and defined in the piston longitudinal direction by a piston head. The piston skirt may include a boxed interior space defined by two box walls and two substantially opposing skirt walls. A boss having a through-opening may be arranged on each of the two box walls, the two through-openings being oriented so that they align with one another. The two box walls may each include a boss portion oriented perpendicularly to the boss, and at least one intermediate portion extending between the respective boss portion and one of the skirt walls. The intermediate portion may merge via a bend into the associated boss portion. A radial extent of the boss portion may be greater than a diameter of the through-opening and at least 50% of a diameter of the piston.

Abstract: A piston for an internal combustion engine including a piston crown and a combustion chamber recess recessed therein, the combustion chamber recess including a recess edge. The piston may also include a ring groove for receiving a piston ring. The piston may further include a cooling duct having a smaller spacing from the piston crown than that of a flank of the ring groove, the cooling duct defining a minimum spacing from the piston crown at a first location, and a minimum spacing from the combustion chamber recess at a second location. The cooling duct may have a rounded portion between the first location and the second location. The cooling duct may have a maximum spacing from the recess edge at a third location. The rounded portion may have a rounding radius defined at least at the third location that is greater than 4% of a piston diameter.

Abstract: A piston for an internal combustion engine may include a piston head and a piston shaft. The piston shaft may have two shaft walls, one arranged on a pressure side and the other arranged on a counter-pressure side. Two box walls may have pin bosses and connect the shaft walls. Each of the box walls may have a first partial wall section and a second partial wall section. The first partial wall section may extend between the pin boss and the shaft wall arranged on the pressure side. The second partial wall section may extend between the pin boss and the shaft wall arranged on the counter-pressure side. A first longitudinal center line of the first partial wall section is may be convergent to a second longitudinal center line of the second partial wall section, wherein the first and second longitudinal center lines—intersect each other outside the piston.

Abstract: A soluble and substantially ring-shaped casting core may include a cooling channel in a piston having at least one inflow and at least one outflow. The casting core may form a closed ring and the inflow may be arranged directly adjacent to the outflow. The casting core may have a cross-sectional taper for forming a choke in the circumferential direction between the inflow and the outflow.

Abstract: A piston for an internal combustion engine may include a piston head and a piston shaft. The piston shaft may have two shaft walls, one arranged on a pressure side and the other arranged on a counter-pressure side. Two box walls may have pin bosses and connect the shaft walls. Each of the box walls may have a first partial wall section and a second partial wall section. The first partial wall section may extend between the pin boss and the shaft wall arranged on the pressure side. The second partial wall section may extend between the pin boss and the shaft wall arranged on the counter-pressure side. A first longitudinal centre line of the first partial wall section is may be convergent to a second longitudinal centre line of the second partial wall section, wherein the first and second longitudinal centre lines—intersect each other outside the piston.

Abstract: A soluble and substantially ring-shaped casting core may include a cooling channel in a piston having at least one inflow and at least one outflow. The casting core may form a closed ring and the inflow may be arranged directly adjacent to the outflow. The casting core may have a cross-sectional taper for forming a choke in the circumferential direction between the inflow and the outflow.

Abstract: The invention proposes a piston (10) for an internal combustion engine, having a piston crown (11), having a fire land (12), having an encircling ring section (13) which has annular grooves (14), and having a piston shank (15) which has two shank walls (16, 17) arranged on the pressure side (DS) and on the counterpressure side (GDS) and two box walls (18, 19) which connect the shank walls (16, 17) to one another, wherein the box walls (18, 19) are provided with pin hubs (21) which have hub bores (22), and wherein the shank wall (16) arranged on the pressure side (DS) is shorter, as viewed in the circumferential direction of the piston (10), than the shank wall (17) arranged on the counterpressure side (GDS). To reduce the loading of the piston, the pressure-side box walls (18) run rectilinearly and obliquely, wherein the spacing of the box walls (18) is greater in the region of the pin hubs (21) than in the region of the pressure-side shank wall (16).

Abstract: A hydraulically damping elastomeric bearing is suitable for mountings in a motor vehicle. The elastomeric bearing includes an elastic bearing part which is arranged between a sleeve-shaped outer part and an inner part coaxial thereto and which connects these elastically to one another. At least two chambers, which are filled with a liquid damping medium, communicate with one another via at least one throttle duct. Four chambers are provided, which are arranged in one plane, the four chambers each being arranged in one of four quadrants which are formed by two intersecting axes arranged in the plane, and at least two throttle ducts being provided.

Abstract: A hydraulically damping elastomeric bearing, which is suitable for mountings in a motor vehicle, includes an elastic connecting body which is arranged between a first bearing component and a second bearing component and connects these elastically to one another. Two chambers which are filled with a liquid damping medium communicate with one another via at least one throttle duct. To generate a specific damping characteristic, at least two throttle ducts are provided, which connect the two chambers to one another, the first throttle duct containing an absorber which is adjusted as a function of pressure differences between the chambers in the first throttle duct, the absorber controlling the opening cross-section of the second throttle duct as a function of its adjusting movements.

Abstract: A hydraulically damping elastomeric bearing, which is suitable for mountings in a motor vehicle, includes an elastic connecting body which is arranged between a first bearing component and a second bearing component and connects these elastically to one another. Two chambers which are filled with a liquid damping medium communicate with one another via at least one throttle duct. To generate a specific damping characteristic, at least two throttle ducts are provided, which connect the two chambers to one another, the first throttle duct containing an absorber which is adjusted as a function of pressure differences between the chambers in the first throttle duct, the absorber controlling the opening cross-section of the second throttle duct as a function of its adjusting movements.

Abstract: A hydraulically damping elastomeric bearing is suitable for mountings in a motor vehicle. The elastomeric bearing includes an elastic bearing part which is arranged between a sleeve-shaped outer part and an inner part coaxial thereto and which connects these elastically to one another. At least two chambers, which are filled with a liquid damping medium, communicate with one another via at least one throttle duct.