Abstract: The disclosure relates to an electrical plug connector, comprising two housing parts, which are connected in a sealing manner on flat contact surfaces. A first housing part is, on its contact surface, equipped with an annular sealing edge directed at the opposite housing part. A second housing part is, on its contact surface, equipped with an annular seal corresponding to the sealing edge. The housing parts may be unreleasably connected to one another at multiple locations radially outside the seal and the sealing edge.

Abstract: In an injector for an accumulator injection system comprising an injector having an injector housing with an injection nozzle and an actuator for operating the injection nozzle arranged in a fuel-filled pressure space of the injector housing wherein the actuator includes a piezoelectric element disposed between an actuator head and an actuator the base with a fuel-tight casing at least partially surrounding the actuator head and the actuator base, the casing is engaged in a sealing fashion by a first annular element with the actuator base and by a second annular element with the actuator head.

Abstract: In a balance shaft for a multi-cylinder in-line engine with at least two imbalance weight sections and at least one bearing structure wherein the balance shaft has imbalance weight sections being arranged symmetrically relative to the bearing position and at least one of the imbalance weight sections is connected to a further shaft section at an end facing away from the bearing position, a flexible coupling element that enables a deflection of the end of the connected imbalance weight section in the direction of the resulting centrifugal forces when the balance shaft rotates is provided between the end of the at least one imbalance weight section facing away from the bearing position and the further shaft section.

Abstract: In an internal combustion engine having a coolant circuit which comprises a first coolant line for the cylinder block and a second coolant line for the cylinder head of the engine, with the cylinder head having at least one inlet valve and at least one outlet valve per cylinder, an additional coolant duct provided in the cylinder head in close proximity to the valves is connected to the second coolant line for directly supplying coolant to the area of the cylinder outlet valves.

Abstract: A joint-site structure for a shaft/disk composite workpiece, in particular for joining a shaft 1 to a connection flange 2 of a hub part of the disk by means of friction welding. A respective defined gap 4, 4? is incorporated between shaft 1 and connection flange 2 of the hub part in front of and behind a joint site 3, this gap 4, 4? preventing the spread of the material softened during the friction welding. The joint-site structure is used, for example, during the joining of a crankshaft and a hub part of a drive wheel.

Abstract: In a balance shaft for a multi-cylinder in-line engine with at least two imbalance weight sections and at least one bearing structure wherein the balance shaft has imbalance weight sections being arranged symmetrically relative to the bearing position and at least one of the imbalance weight sections is connected to a further shaft section at an end facing away from the bearing position, a flexible coupling element that enables a deflection of the end of the connected imbalance weight section in the direction of the resulting centrifugal forces when the balance shaft rotates is provided between the end of the at least one imbalance weight section facing away from the bearing position and the further shaft section.

Abstract: In a method for controlling an inlet valve of an internal combustion engine having at least one cylinder with at least a first inlet valve and a second inlet valve, wherein the closing time of the first inlet valve is adjustable and the first inlet valve is so controlled that, at a first engine speed, the first inlet valve is closed before the closing of the second inlet valve and, at a second engine speed which is higher than the first engine speed, the first inlet valve is closed after the closing time of the second inlet valve.

Abstract: In an air compression internal combustion engine having at least one cylinder, a combustion chamber formed in the cylinder and delimited at its longitudinal ends by a piston and a cylinder head which covers the cylinder, two intake valves and two exhaust valves per cylinder are installed in the cylinder head so as to be inclined at a valve angle ? and ?, respectively, in the range of 2° to 9° relative to a cylinder head longitudinal central plane (10), the valves each have a valve diameter Dintake and Dexhaust which is 30% to 40% of the cylinder diameter Dcylinder, the valve heads are disposed at a distance from the cylinder wall which delimits the combustion chamber, and webs of a predefined width are provided between adjacent valves of a cylinder, and the valve heads have sections which protrude into the combustion by a predetermined limited amount.

Abstract: In a method for controlling an inlet valve of an internal combustion engine having at least one cylinder with at least a first inlet valve and a second inlet valve, wherein the closing time of the first inlet valve is adjustable and the first inlet valve is so controlled that, at a first engine speed, the first inlet valve is closed before the closing of the second inlet valve and, at a second engine speed which is higher than the first engine speed, the first inlet valve is closed after the closing time of the second inlet valve.

Abstract: In a motor vehicle engine and transmission support arrangement at the front end of a motor vehicle wherein the engine has a drive shaft with a drive wheel mounted thereon, and a torque converter unit with an input shaft and an input wheel mounted on the input shaft which is vertically displaced from the output shaft of the engine a power transmission structure is disposed between the drive wheel of the engine and the input wheel of the torque converter unit for transmitting the engine power to the torque converter unit.

Abstract: In an internal combustion engine having a coolant circuit which comprises a first coolant line for the cylinder block and a second coolant line for the cylinder head of the engine, with the cylinder head having at least one inlet valve and at least one outlet valve per cylinder, an additional coolant duct provided in the cylinder head in close proximity to the valves is connected to the second coolant line for directly supplying coolant to the area of the cylinder outlet valves.

Abstract: In a motor vehicle engine and transmission support arrangement at the front end of a motor vehicle wherein the engine has a drive shaft with a drive wheel mounted thereon, and a torque converter unit with an input shaft and an input wheel mounted on the input shaft which is vertically displaced from the output shaft of the engine a power transmission structure is disposed between the drive wheel of the engine and the input wheel of the torque converter unit for transmitting the engine power to the torque converter unit.

Abstract: In a cylinder head for a multi-cylinder internal combustion engine comprising a casting having bottom top and side walls delimiting a cooling water space and tubular cylinder head bolt columns extending along the side walls, and transverse walls extending between opposite cylinder head bolt columns, the tubular cylinder head bolt columns have, adjacent the bottom wall, separating wall sections which are relatively thin so that they do not transmit cylinder head clamping forces to an engine block to which the cylinder head is bolted.

Abstract: In a cylinder head of a multicylinder internal combustion engine comprising a casting having a bottom wall, a top wall and outer side walls delimiting together a cooling water space through which intake and exhaust passages extend to the side walls, cylinder head bolt-receiving tubular columns extend from the top walls toward the bottom walls only to a certain distance from the bottom wall and are joined to the side walls and transverse walls for uniformly transmitting bolting forces from the bolt receiving tubular columns to the bottom wall.