Systems and methods for implementing regeneration of an aftertreatment component using exhaust gas recirculation is described. According to various embodiments, an engine system comprises an engine, a turbocharger, a fluid control valve, and a lean NO.sub.x catalyst. The engine has a first set cylinders fluidly coupled to an intake manifold and a second set of cylinders having fluidly isolated from the intake manifold of the engine. The fluid control valve is disposed between the first exhaust outlet and the exhaust conduit and is structured to selectively fluidly couple the first exhaust outlet to the exhaust conduit. Also, the lean NO.sub.x catalyst has an inlet structured to receive exhaust gases from the exhaust conduit at a position downstream of the turbine outlet and the fluid control valve.

An internal combustion engine wherein at least two cylinders continuously communicate via the cylinder head and wherein the connecting rod in one cylinder is offset from the connecting rod in the second cylinder by a first angle between 8 and 12 degrees as measured from the crankshaft, and a camshaft having a second offset of one half of the first angle offset.

An internal combustion engine wherein at least two cylinders continuously communicate via the cylinder head and wherein the connecting rod in one cylinder is offset from the connecting rod in the second cylinder by a first angle between 8 and 12 degrees as measured from the crankshaft, and a camshaft having a second offset of one half of the first angle offset.

An engine system may include an engine including a plurality of combustion chambers generating driving torque by combustion of fuel, an intake line through which outside air supplied to the combustion chamber flows, an exhaust line for exhausting the exhaust gas from the combustion chamber to the outside, a turbocharger including a compressor mounted in the intake line and a turbine mounted in the exhaust line, an air supply passage through which a portion of the outside air branched from the intake line and supplied to the combustion chamber, an air supply nozzle connected to the air supply passage and supplying the part of the outside air to the combustion chamber, an air supply pump provided in the air supply passage and providing an injection pressure to the part of the outside air injected into the combustion chamber, and a controller for controlling the air supply nozzle and the air supply pump.

An engine system may include an engine including a plurality of combustion chambers generating driving torque by combustion of fuel, an intake line through which outside air supplied to the combustion chamber flows, an exhaust line for exhausting the exhaust gas from the combustion chamber to the outside, a turbocharger including a compressor mounted in the intake line and a turbine mounted in the exhaust line, an air supply passage through which a portion of the outside air branched from the intake line and supplied to the combustion chamber, an air supply nozzle connected to the air supply passage and supplying the part of the outside air to the combustion chamber, an air supply pump provided in the air supply passage and providing an injection pressure to the part of the outside air injected into the combustion chamber, and a controller for controlling the air supply nozzle and the air supply pump.

A compound engine assembly with an inlet duct, a compressor, an engine core including at least one internal combustion engine, and a turbine section including a turbine shaft configured to compound power with the engine shaft. The turbine section may include a first stage turbine and a second stage turbine. The turbine shaft and the engine shaft are parallel to each other. The turbine shaft, the engine shaft and at least part of the inlet duct are all radially offset from one another. A method of driving a rotatable load of an aircraft is also discussed.

A compound engine assembly with an inlet duct, a compressor, an engine core including at least one internal combustion engine, and a turbine section including a turbine shaft configured to compound power with the engine shaft. The turbine section may include a first stage turbine and a second stage turbine. The turbine shaft and the engine shaft are parallel to each other. The turbine shaft, the engine shaft and at least part of the inlet duct are all radially offset from one another. A method of driving a rotatable load of an aircraft is also discussed.

An otto-cycle engine is disclosed. The engine of the present disclosure consumes less work than a traditional engine for the following reasons: (1) the engine adopts constant volume exhaust and reduces the work consumed by forced exhaust and (2) in an intake stroke, the piston has a short stay at the top dead center and an intake valve has enough time to open to the maximum, thereby reducing negative pressure and reducing the work consumed by intake. By adopting otto-cycle technology, heat efficiency of the engine can be increased by more than 50%. And meanwhile, by adopting constant volume exhaust technology, power loss can be reduced, vibration of the engine can also be greatly reduced and an effect of a boxer engine is achieved.

An otto-cycle engine is disclosed. The engine of the present disclosure consumes less work than a traditional engine for the following reasons: (1) the engine adopts constant volume exhaust and reduces the work consumed by forced exhaust and (2) in an intake stroke, the piston has a short stay at the top dead center and an intake valve has enough time to open to the maximum, thereby reducing negative pressure and reducing the work consumed by intake. By adopting otto-cycle technology, heat efficiency of the engine can be increased by more than 50%. And meanwhile, by adopting constant volume exhaust technology, power loss can be reduced, vibration of the engine can also be greatly reduced and an effect of a boxer engine is achieved.

An apparatus, system and method for generating power, utilising a novel mono-block reciprocating piston engine with reduced or zero harmful emissions. The mono-block comprises a composite internal combustion IC section and Organic Rankine Cycle ORC section. The mono-block engine comprises two or more cylinders each having a piston housed therein; a composite internal combustion IC section controlling the displacement of at least one of the pistons and; an Organic Rankine Cycle ORC section controlling the displacement of at least one of the pistons; wherein the IC and ORC pistons connect to and drive a common crankshaft of the mono-block engine power plant; and wherein the Organic Rankine Cycle operates by the heat generated by the combustion in the internal combustion section, and the displacement of the pistons in the ORC section is achieved by injecting heated and pressurised ORC fluid.