Abstract: Methods and systems are provided for cleaning a water-cooled charge-air cooler. In one example, a method may include condensing water present in the supplied charge-air and exhaust gas which may exist in gaseous and droplet form, and purging the condensate along with the exhaust gas. A system for carrying out the above mentioned method is also provided.

Abstract: A system and methods are described for a turbocharged engine, comprising powering the engine using a first operating cylinder, supplementing the power using a second switchable cylinder, deactivating the second switchable cylinder responsive to a load below a first threshold, and closing a first shut-off element downstream of a compressor during the partial deactivation to prevent a first turbocharger from imparting a delivery action into a second compressor during the partial deactivation. Embodiments are further described wherein a bypass line in a second exhaust line further serves as a short-circuit line to prevent the second compressor from imparting a delivery action against the closed first shut-off element. A variable valve timing is then included to further optimize the combustion process during the partial deactivation.

Abstract: A system and method is provided for an at least partially variable valve drive in an internal combustion engine. In one example, the at least partially variable valve drive comprises a hydraulically adjustable actuating device which may be charged with pressurized oil via an oil pressure line which branches off from an oil circuit.

Abstract: Embodiments for an engine system are provided. One example internal combustion engine having at least one cylinder head and at least two cylinders, in which each cylinder has at least one inlet opening for the supply of combustion air into the cylinder, comprises an intake line leading to each inlet opening, an overall intake line where the intake lines of at least two cylinders merge, such that a distributor junction point is formed, and a heating device arranged in the overall intake line which has at least one strip-like heating element, a first narrow side of a cross section of which faces toward intake combustion air flow, wherein the heating device is arranged adjacent to the distributor junction point at which the intake lines merge to form the overall intake line, a spacing between the heating device and the distributor junction point being smaller than the diameter of a cylinder.

Abstract: Methods and systems are provided for separately providing liquid-cooling to a cylinder head and a cylinder block. In one example, a method includes selectively pumping coolant with a single pump to each of a first cylinder head coolant jacket and a cylinder block coolant jacket based on engine temperatures. The method further includes discharging coolant from the first cylinder head coolant jacket to a heating circuit line including a vehicle interior heater and discharging coolant from the cylinder block cooling jacket and back to the single pump.

Abstract: Systems and methods are provided for operating an internal combustion engine in a two-stroke mode or a four-stroke mode to achieve greater fuel efficiency and minimize emissions. The system comprises a mode-adaptable valve; a valve rocker arm to actuate opening and closing of the mode adaptable valve; a cam follower of a first cam for carrying out a two-stroke mode; a cam follower of a second cam for carrying out a four-stroke mode; and a pin to mechanically couple the valve rocker arm to the cam follower of the first cam or the cam follower of the second cam. Coupling the valve rocker arm to the cam follower of the first cam enables a two-stroke mode and coupling the valve rocker arm to the cam follower of the second cam enables a four-stroke mode.

Abstract: Embodiments for an engine system are provided. One example internal combustion engine having at least one cylinder head and at least two cylinders, in which each cylinder has at least one inlet opening for the supply of combustion air into the cylinder, comprises an intake line leading to each inlet opening, an overall intake line where the intake lines of at least two cylinders merge, such that a distributor junction point is formed, and a heating device arranged in the overall intake line which has at least one strip-like heating element, a first narrow side of a cross section of which faces toward intake combustion air flow, wherein the heating device is arranged adjacent to the distributor junction point at which the intake lines merge to form the overall intake line, a spacing between the heating device and the distributor junction point being smaller than the diameter of a cylinder.