An exhaust-gas recirculation device is configured to be attached to a cylinder block including cylinders individually including built-in pistons and cause a portion of exhaust gas flowing through an exhaust system to recirculate to an intake system. The exhaust-gas recirculation device includes an intake manifold, a recirculation pipe, and a recirculation manifold. The intake manifold includes intake branches each including an intake passage communicating with an intake port and is configured to be disposed at the cylinder block. The recirculation pipe is coupled to an exhaust manifold capable of guiding the exhaust gas outward. The recirculation manifold includes recirculation branches each provided with a recirculation passage communicating with the intake passage via an introduction hole and is coupled to the recirculation pipe. The introduction hole has an inner diameter at a recirculation-passage side that is larger than an inner diameter at an intake-passage side.

An exhaust gas control apparatus of an internal combustion engine includes a turbocharger including a turbine in an exhaust passage of the internal combustion engine, a post-processing device configured to control exhaust gas, the post-processing device being disposed in the exhaust passage downstream of the turbine, an EGR passage configured to connect the exhaust passage downstream of the turbine and upstream of the post-processing device with a cylinder of the internal combustion engine, and an EGR device including an EGR valve which is disposed in an end portion on the cylinder side of the EGR passage and opens or closes the EGR passage in the cylinder.

An exhaust gas recirculation arrangement is provided for a power system, the power system including an internal combustion engine, an exhaust gas system and an intake system including an inlet air compressor, the exhaust gas recirculation arrangement including a first exhaust gas recirculation path and a second exhaust gas recirculation path for recirculating exhaust gas from the exhaust gas system to the intake system. The first and second exhaust gas recirculation paths are adapted to recirculate exhaust gas to the same side of the inlet air compressor, in an intended direction of flow of inlet air in the power system, wherein the exhaust gas recirculation arrangement includes a flow controller, preferably the flow controller includes a valve connected to the second exhaust gas recirculation path, for controlling the flow volume through at least one of the first and second exhaust gas recirculation paths.

An exhaust gas recirculation arrangement is provided for a power system, the power system including an internal combustion engine, an exhaust gas system and an intake system including an inlet air compressor, the exhaust gas recirculation arrangement including a first exhaust gas recirculation path and a second exhaust gas recirculation path for recirculating exhaust gas from the exhaust gas system to the intake system. The first and second exhaust gas recirculation paths are adapted to recirculate exhaust gas to the same side of the inlet air compressor, in an intended direction of flow of inlet air in the power system, wherein the exhaust gas recirculation arrangement includes a flow controller, preferably the flow controller includes a valve connected to the second exhaust gas recirculation path, for controlling the flow volume through at least one of the first and second exhaust gas recirculation paths.

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, exhaust from a first set of exhaust valves coupled to the first exhaust manifold may be selectively routed to the intake passage via each of a first EGR passage coupled to the intake passage upstream of a compressor driven by a turbine and a second EGR passage coupled downstream of an outlet of the compressor. A decision of whether to route exhaust gas to the intake passage via the first EGR passage, second EGR passage, or both passages may be based on engine operating conditions.

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, during a cold start, a method may include adjusting a position of a first valve disposed in an exhaust gas recirculation (EGR) passage based on an engine operating condition, the EGR passage coupled between the first exhaust manifold coupled to a first set of exhaust valves and the intake passage, upstream of a compressor. As one example, the engine operating condition may include an engine temperature or a temperature of a catalyst disposed in the exhaust passage.

The invention relates to an exhaust gas conducting system for a gasoline engine, comprising an exhaust gas line which can be connected to an exhaust manifold of the gasoline engine, an inlet line which can be connected to an intake manifold of the gasoline engine, and a turbine which is arranged in the exhaust gas line. At least one exhaust gas recirculation line is provided which opens into the inlet line, and the exhaust gas line has a bypass line which opens into the exhaust gas line downstream of the turbine, wherein a) the exhaust gas recirculation line branches off upstream of the turbine, and the bypass line branches off to the exhaust gas recirculation line or b) the bypass line branches off upstream of the turbine, and the exhaust gas recirculation line branches off to the bypass line, wherein c) at least one particle filter is arranged in the exhaust gas recirculation line or in the bypass line upstream of the exhaust gas recirculation line or in the exhaust gas line upstream of the exhaust gas recirculation line.

The invention relates to an exhaust gas conducting system for a gasoline engine, comprising an exhaust gas line which can be connected to an exhaust manifold of the gasoline engine, an inlet line which can be connected to an intake manifold of the gasoline engine, and a turbine which is arranged in the exhaust gas line. At least one exhaust gas recirculation line is provided which opens into the inlet line, and the exhaust gas line has a bypass line which opens into the exhaust gas line downstream of the turbine, wherein a) the exhaust gas recirculation line branches off upstream of the turbine, and the bypass line branches off to the exhaust gas recirculation line or b) the bypass line branches off upstream of the turbine, and the exhaust gas recirculation line branches off to the bypass line, wherein c) at least one particle filter is arranged in the exhaust gas recirculation line or in the bypass line upstream of the exhaust gas recirculation line or in the exhaust gas line upstream of the exhaust gas recirculation line.

An internal combustion engine includes a combustion chamber, a fuel injector injecting fuel into the combustion chamber, a cylinder, a piston having a crown and reciprocating in the cylinder, the crown being exposed to the combustion chamber, and an ignition delay enhancer prolonging an ignition delay of a fuel-air mixture in the combustion chamber. A ceramic member is disposed on at least a fuel injection port, to which fuel is injected from the fuel injector, of the crown of the piston.

A system is provided. The system includes a controller communicatively coupled to an industrial combustion engine and an exhaust gas recirculation (EGR) system, wherein the EGR system is configured to route exhaust gas generated by the industrial combustion engine from at least one exhaust system to at least one intake system, the EGR system includes multiple EGR circuits, each EGR circuit of the multiple EGR circuits includes an EGR cooler unit including at least two of a high temperature non-condensing cooler, a low temperature condensing cooler, an adiabatic gas/liquid separator, and a reheater. The controller includes a processor and a non-transitory memory encoding one or more processor-executable routines, wherein the one or more routines, when executed by the processor, cause the controller to control operations of both the industrial combustion engine and the EGR system.