Abstract: A centrifugal compressor includes a rotary blade that is rotatable around an axis. The centrifugal compressor includes an inlet part that extends in the axial direction, that forms an inlet passage to introduce gas to the rotary blade, and that includes a circular cross section. The centrifugal compressor includes a projecting part that projects from a part of a circumferential wall surface of the inlet passage. A top end of the projecting part is located within an inflow region through which gas flows to the rotary blade. An inclined surface of the projecting part is formed to be inclined so that the top end of the projecting part is located downstream in a rotation direction of the rotary blade relative to a base end of the projecting part.

Abstract: An electronic circuit module includes a circuit board on which electronic components are mounted, and a metal cover covering the circuit board. The metal cover includes a top plate disposed so as to face the circuit board, side plates, and mounting legs. The circuit board has lands to which the mounting legs are joined. The mounting legs each have a bent portion located on the outer periphery of the top plate of the metal cover, and a mounting leg fixing portion in contact with the lands of the circuit board. When seen from the upper surface of the circuit board, the position of the bent portion is on the inner side of the position of the mounting leg fixing portion, and the width of the bent portion is greater than the width of the mounting leg fixing portion.

Abstract: An electronic circuit module includes a circuit board on which electronic components are mounted, and a metal cover covering the circuit board. The metal cover includes a top plate disposed so as to face the circuit board, side plates, and mounting legs. The circuit board has lands to which the mounting legs are joined. The mounting legs each have a bent portion located on the outer periphery of the top plate of the metal cover, and a mounting leg fixing portion in contact with the lands of the circuit board. When seen from the upper surface of the circuit board, the position of the bent portion is on the inner side of the position of the mounting leg fixing portion, and the width of the bent portion is greater than the width of the mounting leg fixing portion.

Abstract: An electronic circuit module includes a circuit substrate whose two opposite side surfaces are provided with cutout portions; and a box-shaped cover body made of a metallic plate and having two claw segments individually disposed within the cutout portions, the cover body being attached to the circuit substrate so as to cover the top surface thereof. The circuit substrate has notches extending linearly inward beyond the opposite ends of each cutout portion from the corresponding side surface of the circuit substrate. The opposite ends of each claw segment in the width direction thereof are disposed facing linear sections of the corresponding notches within the corresponding cutout portion.

Abstract: The present invention provides an antenna-integrated module capable of decreasing the size thereof, facilitating prevention of arbitrary alternation to the circuit, effectively performing a reflow process, and being manufactured at low cost. Circuit elements 3 are mounted on a circuit board 1 with a wiring pattern and a ground conductive layer 2 and a sheet-metal covering antenna element 4 mounted on the circuit board 1 covers the circuit elements 3. The covering antenna element 4 includes a rectangular top plate 5 with openings 5a, a power feeding leg piece 6 connected to a feeding line of the wiring pattern, short-circuited leg pieces 7 and 8 connected to the ground conductive layer 2, support leg pieces 9 to 11 electrically opened, side plates 12 to 15 with openings 12a to 15a and the pieces 6 to 11 are soldered on the circuit board 1.

Abstract: A compressor active surge control system that includes an air recirculation line that has a first end connected downstream of a compressor outlet and a second end connected upstream of a compressor inlet. The gas recirculation line recirculates compressed air from the compressor outlet to the compressor inlet. Also included in the system is a mixer positioned to receive both ambient air and recirculated air. Mixing of the air homogenizes the air prior to its introduction into the compressor. An air cooler may be included that cools the recirculated air prior to its introduction into the compressor. Cooling and mixing of the recirculated air expands the operating range of the compressor by reducing the incidence of surge. Various existing components, such as intercoolers and filters, may serve the additional duty of cooling or mixing the recirculated air.

Abstract: A turbocharger (2) mounted on an engine (1) has an EGR pipe (11) through which part of exhaust gas (8) is extracted from an exhaust manifold (9) to be recirculated to a suction pipe (4), the exhaust manifold (9) being internally divided by a partition (14) for prevention of exhaust interference between cylinders (7). A turbine scroll (15) is internally divided, for continuity with an outlet flow path of the exhaust manifold (9), by a partition (16) such that one of the divided flow paths (A, B) by the partition (16) which served for extraction of the exhaust gas (8) to be recirculated is smaller in cross-sectional area than the other flow path which does not serve for extraction of the exhaust gas (8) to be recirculated.

Abstract: A compressor active surge control system that includes an air recirculation line that has a first end connected downstream of a compressor outlet and a second end connected upstream of a compressor inlet. The gas recirculation line recirculates compressed air from the compressor outlet to the compressor inlet. Also included in the system is a mixer positioned to receive both ambient air and recirculated air. Mixing of the air homogenizes the air prior to its introduction into the compressor. An air cooler may be included that cools the recirculated air prior to its introduction into the compressor. Cooling and mixing of the recirculated air expands the operating range of the compressor by reducing the incidence of surge. Various existing components, such as intercoolers and filters, may serve the additional duty of cooling or mixing the recirculated air.

Abstract: In a shielding structure according to the present invention, a first cover for a first circuit and a second cover for a second circuit have lower ends of two opposing side plates connected by a connecting section, the connecting section and the lower ends of the side plates being soldered to a circuit board. Accordingly, the covers may be integrated with the circuit board only once, thus providing an easy assembly and reducing cost.

Abstract: A transmitter-receiver unit is disclosed wherein a frame is provided with solder-rise preventing means between a circuit board and retaining portions, thereby preventing solder from rising up to the retaining portions. Thus, the engagement between engaging holes and the retaining portions is ensured in comparison with the prior art. The transmitter-receiver unit permits a cover to be mounted positively to the frame and is suitable for the reduction of size and weight.

Abstract: A terminal mounting structure for a printed circuit board according to the present invention comprises a printed circuit board having a wiring pattern and a slit formed in an end face of the board and a terminal connected to the wiring pattern on the board, the terminal being provided with a holding portion having first and second clamp pieces and a connection piece for connection between both clamp pieces, the connection piece being inserted into the slit formed in the printed circuit board to position the terminal with respect to the printed circuit board, and the first and second clamp pieces being connected to the wiring pattern.

Abstract: According to the electronic device of the invention, the convex parts formed on the case is inserted into the engagement holes provided on the thermal conduction member, and the front ends of the convex parts are caulked to eliminate the plays. Further, the tongue-form pieces are formed on each of the two sides parallel to each other, the clasps are formed upright on the case, and the tongue-form pieces are hooked by the lower sides of the clasps. Further, the two sides where the tongue-form pieces of the thermal conduction member are formed are provided with slits that make it easy to deflect the tongue-form pieces, which facilitates the work to hook by slanting the upper sides of the clasps on the case, and further eliminates the plays.

Abstract: In a box-shaped molded resin body having side walls and a flat plate part in which a heat discharging plate made of a metal is embedded, a part of the heat discharging plate is exposed from a through hole in the flat plate part and the side walls, and an electronic part mounted on a printed board assembled in the molded resin body is come into contact with the heat discharging plate exposed from the through hole, thereby discharging the heat generated from the electronic part by the heat discharging plate.

Abstract: The electronic device of the present invention includes a printed wiring board having wiring patterns, a heat generating component connected to the wiring patterns, a heat radiating member formed of a metal, the heat radiating member having a base portion, a tongue piece formed by cutting the base portion and raising the cut portion, and a pair of mounting legs, and a frame for mounting the printed wiring board, the mounting legs of the heat radiating member being positioned at both opposed sides of the printed wiring board so that the base portion of the heat radiating member is located above the printed wiring board and so that the heat radiating member straddles the printed wiring board, and the tongue piece of the heat radiating member being in elastic contact with the heat generating component.