An internal combustion engine is provided with a plurality of cylinders, air intake valves provided to each of the cylinders, and a variable valve actuation mechanism for varying the valve actuation of the air intake valves. A motor drives the variable valve actuation mechanism. A motor controller controls the motor. The internal combustion engine is capable of operating in a cylinder deactivation mode, in which the air intake valves of some of the cylinders are kept shut. When the internal combustion engine is reactivated from the cylinder deactivation mode, the motor controller executes an air intake amount correction process, in which the opening duration of the air intake valves is temporarily increased, thereby increasing the amount of air taken in by operating cylinder for which the air intake valves have been opened or closed even during the cylinder deactivation mode.

An internal combustion engine for use with hydrogen fuel, the engine having at least one cylinder assembly which includes a combustion chamber having a cylinder, a cylinder head and a reciprocating piston assembly, the cylinder defining a cylinder longitudinal axis; a fuel injector for injecting fuel into the combustion chamber, the fuel injector defining an injector longitudinal axis; and a fuel flow director, wherein the fuel flow director is located in the fuel flow path between an outlet of the fuel injector and the combustion chamber. The fuel injector is oriented such that the injector longitudinal axis extends at a first angle; and the fuel flow director is configured to direct fuel flow into the combustion chamber at a second angle, different to the first angle.

A multi-pump thermal system for a vehicle includes a coolant circuit having a first loop and a second loop, a first pump disposed on the coolant circuit, and a second pump disposed on the coolant circuit. A first component on the first loop is configured to be cooled by a first flow of coolant passing through the first loop. A second component on the second loop is configured to be cooled by a second flow of coolant passing through the second loop. A controller is in signal communication with the first and second pumps, and is programmed to (i) utilize a physics based model to determine speeds of the first and second pumps to generate predetermined coolant flow targets in the coolant circuit to meet predetermined cooling requirements of the first and second components, and (ii) operate the first and second pumps at the determined speeds.

A multi-pump thermal system for a vehicle includes a coolant circuit having a first loop and a second loop, a first pump disposed on the coolant circuit, and a second pump disposed on the coolant circuit. A first component on the first loop is configured to be cooled by a first flow of coolant passing through the first loop. A second component on the second loop is configured to be cooled by a second flow of coolant passing through the second loop. A controller is in signal communication with the first and second pumps, and is programmed to (i) utilize a physics based model to determine speeds of the first and second pumps to generate predetermined coolant flow targets in the coolant circuit to meet predetermined cooling requirements of the first and second components, and (ii) operate the first and second pumps at the determined speeds.

A method for operating an internal combustion engine of a motor vehicle. The internal combustion engine includes a combustion chamber, an intake tract, a compressor disposed in the intake tract, and a conduit element which is fluidly connected to the intake tract. The internal combustion engine is operable in a heating mode to heat at least a compressor housing of the compressor. In the heating mode a part of the air flowing through the intake tract and compressed by the compressor is returned to the intake tract by the conduit element. The method includes recording a temperature of the air in the intake tract upstream of the compressor by a sensor and comparing the temperature with a threshold value. When the temperature is lower than the threshold value, the internal combustion engine is operated in the heating mode.

A method for operating an internal combustion engine of a motor vehicle. The internal combustion engine includes a combustion chamber, an intake tract, a compressor disposed in the intake tract, and a conduit element which is fluidly connected to the intake tract. The internal combustion engine is operable in a heating mode to heat at least a compressor housing of the compressor. In the heating mode a part of the air flowing through the intake tract and compressed by the compressor is returned to the intake tract by the conduit element. The method includes recording a temperature of the air in the intake tract upstream of the compressor by a sensor and comparing the temperature with a threshold value. When the temperature is lower than the threshold value, the internal combustion engine is operated in the heating mode.

Methods and systems are provided for boosted engines. In one example, a method for a boosted engine method may include storing compressed air in a reservoir for supply to the engine during increased engine load operating conditions and replenishing the air in response to pressure dropping below a nominal threshold; and increasing the pressure beyond the nominal threshold in response to increased temperature of the stored air in the reservoir even when operating conditions include decreased engine load, and purging the increased temperature stored air to bring pressure back down toward the nominal threshold. In one example, increasing pressure to the reservoir may include supplying compressed air from an air suspension system. In one example, increasing pressure to the reservoir may include supplying compressed air from an air compressor separate from an engine turbocharger compressor. In one example, the method may include, in response to a vehicle operator tip-in during the increasing of the pressure beyond the nominal threshold, simultaneously supplying stored compressed air to the engine while replenishing the air.

The invention relates to a charged rotary internal combustion engine with intake air internal cooling (EM), characterized in that in the connection between components to be cooled and the inlet into the working area at least one shut-off device (V) is provided, through which charging pressure can escape.

The invention relates to a charged rotary internal combustion engine with intake air internal cooling (EM), characterized in that in the connection between components to be cooled and the inlet into the working area at least one shut-off device (V) is provided, through which charging pressure can escape.

Methods and systems are provided for boosted engines. In one example, a method for a boosted engine method may include storing compressed air in a reservoir for supply to the engine during increased engine load operating conditions and replenishing the air in response to pressure dropping below a nominal threshold; and increasing the pressure beyond the nominal threshold in response to increased temperature of the stored air in the reservoir even when operating conditions include decreased engine load, and purging the increased temperature stored air to bring pressure back down toward the nominal threshold. In one example, increasing pressure to the reservoir may include supplying compressed air from an air suspension system. In one example, increasing pressure to the reservoir may include supplying compressed air from an air compressor separate from an engine turbocharger compressor. In one example, the method may include, in response to a vehicle operator tip-in during the increasing of the pressure beyond the nominal threshold, simultaneously supplying stored compressed air to the engine while replenishing the air.