An engine includes a block defining at least one cylinder and a cylinder head received on the block. The cylinder includes a casting defining an exhaust port in fluid communication with the cylinder and an integrated exhaust manifold. The integrated exhaust manifold has an exhaust runner defined by the casting and extending from the exhaust port to an outlet defined on an outer surface of the casting. The casting includes a protrusion extending into the exhaust runner such that a raised dimple is disposed on a sidewall of the exhaust runner. The casting further defines a sensor bore extending towards the protrusion such that the sensor bore and the protrusion have a common centerline. A temperature sensor is disposed in the sensor bore and has a sensing element arranged in proximity to the protrusion such that the sensing element reads a temperature of the protrusion.

Systems for an integrated exhaust manifold cylinder head are provided. In one example, an exhaust manifold for a vehicle includes a plurality of exhaust runners coupling a plurality of cylinder exhaust gas outlet ports to an exhaust exit port, the plurality of exhaust runners forming at least a first exhaust passage and a second exhaust passage at the exhaust exit port; an upper cooling jacket positioned vertically above the first exhaust passage; a lower cooling jacket positioned vertically below the second exhaust passage; and a central cooling jacket positioned vertically below the first exhaust passage and vertically above the second passage.

An engine is provided, which includes an engine body including a plurality of cylinders, each of the cylinders being provided with an intake port, an exhaust port, an intake valve, and an exhaust valve, an intake passage and an exhaust passage connected to the engine body, and a turbocharger including a turbine provided to the exhaust passage and a compressor provided to the intake passage. A geometric compression ratio of the cylinder is 11:1 or higher. An open period of the intake valve is a range of 270° or larger by a crank angle. The exhaust passage includes a plurality of independent exhaust passages, each communicating with the exhaust port of one cylinder or with the exhaust ports of two or more cylinders of which timings of exhaust strokes are discontinuous from each other, and connecting the engine body to the turbine.

An engine exhaust manifold including exhaust inlet parts at four locations corresponding to a plurality of exhaust ports, one exhaust outlet part, and an exhaust confluence part to collect exhaust gas from each of the exhaust inlet parts and send to the exhaust outlet part. An EGR passage part to send EGR gas toward an intake passage is formed.

A cylinder head configured for dividing coolant introduced thereinto to a combustion chamber side and an exhaust manifold side to increase the amount of coolant introduced to the combustion chamber side, improving cooling performance, may include a head water jacket having a combustion chamber coolant inlet, through which coolant is introduced from a cylinder block to a combustion chamber side, and an exhaust coolant inlet, through which the coolant is introduced from the cylinder block to an exhaust manifold side, the combustion chamber coolant inlet and the exhaust coolant inlet being separated from each other such that the coolant introduced through the combustion chamber coolant inlet flows to the combustion chamber side in an expanded state.

A cylinder head assembly includes a cast cylinder head and a turbocharger housing integrally cast with the cylinder head. The integrated cylinder head and turbocharger housing includes: (i) a compact low wetted area to provide an uninterrupted flow path pointed directly at a catalyst face to facilitate achieving cold start emissions targets, (ii) a casting core assembly with specific core geometry and steps for assembly to enable core assembly while meeting all cylinder head and integrated turbine housing functional requirements, (iii) an oxygen sensor disposed pre-turbine in an integrated exhaust manifold, and (iv) a fully integrated PCV make-up air system.

A cylinder head configured for dividing coolant introduced thereinto to a combustion chamber side and an exhaust manifold side to increase the amount of coolant introduced to the combustion chamber side, improving cooling performance, may include a head water jacket having a combustion chamber coolant inlet, through which coolant is introduced from a cylinder block to a combustion chamber side, and an exhaust coolant inlet, through which the coolant is introduced from the cylinder block to an exhaust manifold side, the combustion chamber coolant inlet and the exhaust coolant inlet being separated from each other such that the coolant introduced through the combustion chamber coolant inlet flows to the combustion chamber side in an expanded state.

An exhaust structure of an internal combustion engine having an exhaust passage communicating between an exhaust port and an exhaust pipe. The exhaust structure includes a heat insulating component covering an inner wall of the exhaust port, the heat insulating component includes a first abutting portion disposed at a first side of the heat insulating component at a combustion chamber side and abutting an inner wall of the exhaust port, a second abutting portion disposed at a second side of the heat insulating component at an exhaust pipe side and abutting the inner wall, and a middle section disposed between the first side and the second side. A gap is formed between the middle section and the inner wall, and a bent portion connecting the middle section and the first abutting portion is bending toward the inner wall of the exhaust port from the middle section.

An automobile vehicle engine exhaust system with integrated exhaust gas recirculation portion includes a cylinder head having a first exhaust passage internal to the cylinder head. The first exhaust passage is split within the cylinder head into a dedicated exhaust passage opening out of the cylinder head via a dedicated exhaust port, and an exhaust gas recirculation (EGR) exhaust passage opening out of the cylinder head via an EGR exhaust port. A valve assembly is operated to open one of the dedicated exhaust port or the EGR exhaust port while closing the other one of the dedicated exhaust port or the EGR exhaust port.

A cylinder head includes: an exhaust port configured to lead out exhaust gas from combustion chamber; an intake port configured to introduce fresh air into the combustion chamber; an intake air aggregate part configured to aggregate the intake port; and a second EGR pipe in which EGR gas flows, wherein exhaust outlets of the exhaust port and an EGR gas inlet of the second EGR pipe are arranged side-by-side on a flat left side surface, and a fresh air inlet of the intake air aggregate part and an EGR gas outlet of the second EGR pipe are arranged side-by-side on a flat right side surface.