Abstract: A motor vehicle internal combustion engine has at least one combustion chamber delimited by at least one wall of the internal combustion engine, and at least one injector that is associated with the combustion chamber and that is at least partially accommodated in a receiving opening delimited by a first wall area of the wall extending at least essentially parallel to the axial direction of the injector The injector includes at least one injection opening that opens into the combustion chamber via the receiving opening, in the direction of the combustion chamber the first wall area being directly adjoined by a further wall area of the wall that extends at an angle to the axial direction and which delimits an at least essentially conical area of the receiving opening which expands toward the combustion chamber.

Abstract: In a fuel injection system of an internal combustion engine, having a combustion chamber with at least one intake valve at an intake side and with at least one exhaust valve at an exhaust side of the combustion chamber and a central injection nozzle for injecting fuel into the combustion chamber, the injection nozzle has injection orifices which are designed and oriented in such a way that a first quantity of fuel is injected into the intake side, a second quantity of fuel injected is into the exhaust side, and a third quantity of fuel which is about equal to the first quantity and greater than the second quantity is injected into a boundary area between the intake and the exhaust sides, providing for a low-emission operation of the internal combustion engine.

Abstract: A motor vehicle internal combustion engine has at least one combustion chamber delimited by at least one wall of the internal combustion engine, and at least one injector that is associated with the combustion chamber and that is at least partially accommodated in a receiving opening delimited by a first wall area of the wall extending at least essentially parallel to the axial direction of the injector The injector includes at least one injection opening that opens into the combustion chamber via the receiving opening, in the direction of the combustion chamber the first wall area being directly adjoined by a further wall area of the wall that extends at an angle to the axial direction and which delimits an at least essentially conical area of the receiving opening which expands toward the combustion chamber.

Abstract: In a fuel injection system of an internal combustion engine, having a combustion chamber with at least one intake valve at an intake side and with at least one exhaust valve at an exhaust side of the combustion chamber and a central injection nozzle for injecting fuel into the combustion chamber, the injection nozzle has injection orifices which are designed and oriented in such a way that a first quantity of fuel is injected into the intake side, a second quantity of fuel injected is into the exhaust side, and a third quantity of fuel which is about equal to the first quantity and greater than the second quantity is injected into a boundary area between the intake and the exhaust sides, providing for a low-emission operation of the internal combustion engine.

Abstract: In an injection nozzle for an internal combustion engine including a nozzle housing, a closure member disposed in a nozzle opening and connected to a nozzle needle for axially moving the closure member outwardly off its seat in the nozzle opening to open the nozzle by providing a gap to permit fuel to be discharged into a combustion chamber of an internal combustion engine so as to form a fuel injection cone, the nozzle seal and the closure member have seal surface areas provided with turbulence chambers for imparting turbulence to the fuel flowing through the gap in order to more finely atomize the fuel forming the fuel cone in the combustion chamber.

Abstract: In an intake system of an internal combustion engine, with an inlet duct which includes at least one inlet valve, and with a throttle member for swirling the gas flowing to the inlet valve, the throttle member is movable into the inlet duct in an introduction direction and can be moved into a position in which it bears annularly against a wall section of the inlet duct where the inlet duct has a recess accommodating the throttle member.

Abstract: In an injection nozzle for an internal combustion engine including a nozzle housing, a closure member disposed in a nozzle opening and connected to a nozzle needle for axially moving the closure member outwardly off its seat in the nozzle opening to open the nozzle by providing a gap to permit fuel to be discharged into a combustion chamber of an internal combustion engine so as to form a fuel injection cone, the nozzle seal and the closure member have seal surface areas provided with turbulence chambers for imparting turbulence to the fuel flowing through the gap in order to more finely atomize the fuel forming the fuel cone in the combustion chamber.

Abstract: An internal combustion engine with a piston arranged in a cylinder bore, a pair of intake passages to the cylinder bore, and having a piston crown provided with a crescent-shaped depression. The inlet passages are arranged symmetrically with respect to an axis of symmetry running through the center of the cylinder bore between the two intake passages. The crescent-shaped depression formed in the piston crown extends across and is symmetrical with respect to the axis of symmetry.

Abstract: A method for manufacturing a cast cylinder head for an internal combustion engine in a casting mold includes placing a sand core in a casting mold in a cavity between an upper part and a lower part of the mold to form a water chamber. Before casting, a displacement body is placed in the sand core, and the displacement body remains in the water chamber after casting.

Abstract: In a liquid-cooled cylinder block and crankcase in an open-deck construction, a displacement body is placed in the coolant space. The shape of the displacement body approaches the shape of the coolant space. The interior wall of the displacement body, together with the exterior surface of the cylinder block containing the cylinders, bound a narrow gap which is connected with the coolant inlet connection. As the result, the coolant is forced to flow along the cylinder block so that an intensive cooling is achieved with a reduced coolant quantity.