Abstract: There is provided a water cooled engine including a cylinder head with minimized thermal strain. A head water jacket includes an inter-exhaust-port-wall water channel between a first exhaust entrance port wall and a second exhaust entrance port wall. A cylinder head includes a cooling water injection passage provided at a bottom wall of the cylinder head. The cooling water injection passage is positioned on the exhaust end side, and includes a passage entrance provided on the exhaust end side, and a passage exit directed toward the inter-exhaust-port-wall water channel. An exhaust port wall includes a heat dissipation fin extending from a first exhaust entrance port wall toward an exhaust end. The space between the heat dissipation fin and a second exhaust entrance port wall forms a water channel entrance of the inter-exhaust-port-wall water channel.

Abstract: An exhaust gas-conducting section of an exhaust turbocharger comprises a duct with a through-flow opening which can be fully or at least partially blocked or released by a closure element of a control device. The closure element is designed as a poppet valve. The closure element can be moved by an actuator can be disposed in a wall of the exhaust gas-conducting section. The closure element has a closure body with an annular section surface on its bottom surface which faces the through-flow opening. The section surface corresponds to an element seat formed in the wall. Its top surface faces away from the bottom surface and is designed in a profiled manner in order to produce a top surface at least partially corresponding to another element seat and/or to achieve flow-optimized circulation.

Abstract: A system includes an engine head that mounts to an engine block of a reciprocating engine, and the engine head includes an intake flow path, an exhaust flow path, a coolant flow path, and first and second sealing registers disposed on opposite sides of the coolant flow path. In addition, the first and second sealing registers are configured to receive a valve guide that supports a valve stem of an exhaust valve. Moreover, the first sealing register is disposed in a wall separating the exhaust flow path and the coolant flow path. Also, a first wall portion of the wall extends between the first sealing register and an exhaust valve seat configured to receive a valve head of the exhaust valve, and a second wall portion of the wall extends from the first sealing register away from the first wall portion.

Abstract: Components for reducing oil sticking on surfaces of an internal combustion engine are disclosed. The engine may include an engine block with a piston cylinder, a piston moveable in reciprocal motion within the piston cylinder, and a cylinder head mounted on the engine block. The engine block, the cylinder head, and the piston may define a combustion chamber. The engine may include an intake conduit mounted to the cylinder head, an intake valve port defined by the cylinder head, and an intake valve mounted in reciprocally movable fashion to the cylinder head for placing the intake valve port in fluid communication with the combustion chamber. The engine may include a first oleophobic coating provided on portions of the intake valve, and a valve seat insert secured to the cylinder head. The valve seat insert may define an oil passage in fluid communication with the intake valve port.

Abstract: A gas exchange valve in an internal combustion engine includes a valve head having a sealing face structured to contact a valve seat and defining a face angle. The valve head further includes an under-head fillet transitioning from the inner sealing face to a valve stem, and defining a chordal stress zone within the under-head fillet. The under-head fillet is formed by a material distributed according to a stress-diffusing contour within the chordal stress zone, and is blended with the inner sealing face at a blend angle that is less than the face angle and is in a range of about 18° to about 35°. The valve head contour is associated with resistance to chordal stress-induced fatigue failure.

Abstract: A cylinder head for an internal combustion engine, the cylinder head including a region for covering a combustion cylinder, the region including one or more ports for communicating with the cylinder, and the cylinder head including a coolant channel that embraces at least one of the ports for cooling the zone of the cylinder head adjacent the port.

Abstract: A temperature control valve 10 for regulating the flow of coolant 15 in an automotive cooling system 11 that includes an engine 12 and a radiator 14. The temperature control valve 10 includes a valve body 40 having an inlet 42 and an outlet 46, a first valve assembly 100 that is movable between a closed position and an open position, and a chamber 74 that is adjacent to the first valve assembly 100. In the closed position of the first valve assembly 100, the inlet 42 of the valve body 100 is not in fluid communication with the outlet 46 of the valve body 100. In the open position of the first valve assembly 100, the inlet 42 of the first valve assembly 100 is in fluid communication with the outlet 46 of the first valve assembly 100. Fluid pressure within the chamber 74 is operable to move the first valve assembly 100 between the open position and the closed position.

Abstract: A reciprocating device which may be operated either as a compressor or an engine. Each cylinder has a reciprocating piston connected to a piston rod. Dual cylinder chambers are located in each cylinder on opposite sides of the piston. The pistons are connected to a scotch yoke which translates the reciprocating motion of the pistons to rotary motion at a shaft in the engine mode. In the compressor mode, the shaft is connected to a power source. The engine components such as the pistons, rods, bushings and cylinder lines may be high quality steel or a ceramic.

Abstract: In an internal combustion engine having a coolant circuit which comprises a first coolant line for the cylinder block and a second coolant line for the cylinder head of the engine, with the cylinder head having at least one inlet valve and at least one outlet valve per cylinder, an additional coolant duct provided in the cylinder head in close proximity to the valves is connected to the second coolant line for directly supplying coolant to the area of the cylinder outlet valves.

Abstract: An improvement to a diesel engine cylinder head disclosed in U.S. Pat. No. 4,860,700, wherein the improvement comprises any of: a by-pass opening formed in partition walls thereof; a spine density of less than about five spines per square inch; spacing an inner chamber wall surface thereof with respect to an inner fire-face wall surface thereof between about 0.75 inches and 0.25 inches; coolant by-pass ports thereof having a cross-section of between about 0.1875 inches and 0.0625 inches; and a radial rib thereof extending complete and free of any rib opening.

Abstract: An internal combustion engine is provided in which an exhaust port communicating with a combustion chamber formed in a cylinder head is formed from independent exhaust ports, which are positioned on the upstream side, and a grouped exhaust port, in which the plurality of independent exhaust ports are combined. Water supplied from a supply pump passes through a water passage of the grouped exhaust port and a water passage of the independent exhaust ports while cooling the exhaust port, and a valve seat and valve guide on the periphery of the exhaust port, which have high temperatures, thus heating the water itself and thereby recovering waste heat of the internal combustion engine. The heated water carries out heat exchange with exhaust gas in an evaporator provided in an exhaust passage and turns into high temperature, high pressure steam, which drives an expander of a Rankine cycle system.

Abstract: A waste heat recovering device for an internal combustion engine includes: an internal combustion engine; and an evaporator into which an exhaust gas of the internal combustion engine is introduced as a high temperature fluid. An exhaust gas inlet of the evaporator is placed adjacent to an exhaust valve of the internal combustion engine. Thus, there can be provided a waste heat recovering device having a high waste heat recovery rate.