Abstract: An engine block (10) includes a cylinder liner (120) and a resin block (200). The cylinder liner (120) has a metal outer circumferential surface (122). The resin block (200) includes a first portion (210) and a gap (230). The first portion (210) covers the metal outer circumferential surface (122) of the cylinder liner (120). The gap (230) is positioned outside the first portion (210) and defines a water jacket (232).

Abstract: An ultra-low carbon steel slab having a carbon content of about 0.01 mass percent or less is produced by casting at a casting speed of more than about 2.0 m/min using a mold provided with a casting space having a short side length D of about 150 to about 240 mm and an immersion nozzle provided with discharge spouts each having a lateral width d, the ratio D/d being in the range of from about 1.5 to about 3.0. Accordingly, a ultra-low carbon steel slab can be obtained having superior surface quality without performing slab conditioning such as scarfing.

Abstract: The plasma display apparatus has a noise filter circuit with a noise filter connected to an AC supply disposed at the back side of a plasma display panel. The plasma display apparatus also has a back cover composed of a magnetic metal material disposed at the back side of the plasma display panel to cover the noise filter circuit, wherein magnetic lines of force in a core, made of magnetic material and including the noise filter direct approximately identical to the in-plane direction of the back cover. The configuration can eliminate audible noises because the amount of leakage flux passing through the back cover is reduced.

Abstract: A box-shaped electronic control unit for use in an automotive vehicle includes a pair of side stays for mounting the electronic control unit on a vehicle. The side stay integrally formed with a bottom cover is bent upward to form a bent portion. When electronic control units are carried by a conveyer, they are placed on a conveyer belt so that the bent portions face one another, thereby to avoid overlapping of the electronic control units on the conveyer belt. To form the side stay having a sufficient mechanical strength endurable against a high vibrating force of the vehicle, a pair of ribs extending from both sides of the bottom cover are formed on the side stays.

Abstract: An ultra-low carbon steel slab having a carbon content of about 0.01 mass percent or less is produced by casting at a casting speed of more than about 2.0 m/min using a mold provided with a casting space having a short side length D of about 150 to about 240 mm and an immersion nozzle provided with discharge spouts each having a lateral width d, the ratio D/d being in the range of from about 1.5 to about 3.0. Accordingly, a ultra-low carbon steel slab can be obtained having superior surface quality without performing slab conditioning such as scarfing.

Abstract: The plasma display apparatus disclosed comprises: a noise filter circuit, having noise filter (253), connected to an AC supply disposed at the back side of the plasma display panel; and a back cover (12) composed of a magnetic metal material disposed at the back side of the plasma display panel to cover the noise filter circuit, wherein magnetic lines of force in the core, made of magnetic material and consisting the noise filter (253), direct approximately identical to the in-plane direction of the back cover (12). The configuration can eliminate audible noises because the amount of leakage flux passing through the back cover is reduced.

Abstract: A box-shaped electronic control unit for use in an automotive vehicle includes a pair of side stays for mounting the electronic control unit on a vehicle. The side stay integrally formed with a bottom cover is bent upward to form a bent portion. When electronic control units are carried by a conveyer, they are placed on a conveyer belt so that the bent portions face one another, thereby to avoid overlapping of the electronic control units on the conveyer belt. To form the side stay having a sufficient mechanical strength endurable against a high vibrating force of the vehicle, a pair of ribs extending from both sides of the bottom cover are formed on the side stays.

Abstract: A box-shaped electronic control unit for use in an automotive vehicle includes a pair of side stays for mounting the electronic control unit on a vehicle. The side stay integrally formed with a bottom cover is bent upward to form a bent portion. When electronic control units are carried by a conveyer, they are placed on a conveyer belt so that the bent portions face one another, thereby to avoid overlapping of the electronic control units on the conveyer belt. To form the side stay having a sufficient mechanical strength endurable against a high vibrating force of the vehicle, a pair of ribs extending from both sides of the bottom cover are formed on the side stays.

Abstract: A casing for an electronic control device, by which a cover and a casing body are reliably sealed up while preventing the cover from warping or from being distorted, although the cover is made of a thin sheet material. The electronic control device casing comprises: a casing body having an opening in its upper face portion for casing a printed circuit board; a cover made of a sheet material for closing the opening of the casing body; a groove portion formed in the open edge portion of the casing body; a liquid sealing material fitted in the groove portion for sealing the open edge portion of the casing body and the flange portion of the cover; and a ridge portion having a generally U-shaped section and formed on the flange portion of the cover for being fitted in the groove portion of the casing body.

Abstract: A casing for an electronic control unit is composed of an upper case having a bottom opening and a bottom plate closing the bottom opening. The upper case is so formed that plural upper cases are easily stacked up and picked up one by one by an automated vacuum sucker. The sidewalls of the upper case facing each other are slanted, and a fringe portion is formed at a bottom end of each slanted sidewall. A U-shaped portion or a protrusion is formed on the fringe portion to prevent the upper case from sticking to another upper case when plural upper cases are vertically stacked up.

Abstract: A box-shaped electronic control unit for use in an automotive vehicle includes a pair of side stays for mounting the electronic control unit on a vehicle. The side stay integrally formed with a bottom cover is bent upward to form a bent portion. When electronic control units are carried by a conveyer, they are placed on a conveyer belt so that the bent portions face one another, thereby to avoid overlapping of the electronic control units on the conveyer belt. To form the side stay having a sufficient mechanical strength endurable against a high vibrating force of the vehicle, a pair of ribs extending from both sides of the bottom cover are formed on the side stays.

Abstract: A casing for an electronic control device, by which a cover and a casing body are reliably sealed up while preventing the cover from warping or from being distorted, although the cover is made of a thin sheet material. The electronic control device casing comprises: a casing body having an opening in its upper face portion for casing a printed circuit board; a cover made of a sheet material for closing the opening of the casing body; a groove portion formed in the open edge portion of the casing body; a liquid sealing material fitted in the groove portion for sealing the open edge portion of the casing body and the flange portion of the cover; and a ridge portion having a generally U-shaped section and formed on the flange portion of the cover for being fitted in the groove portion of the casing body.

Abstract: A casing for an electronic control unit is composed of an upper case having a bottom opening and a bottom plate closing the bottom opening. The upper case is so formed that plural upper cases are easily stacked up and picked up one by one by an automated vacuum sucker. The sidewalls of the upper case facing each other are slanted, and a fringe portion is formed at a bottom end of each slanted sidewall. A U-shaped portion or a protrusion is formed on the fringe portion to prevent the upper case from sticking to another upper case when plural upper cases are vertically stacked up.

Abstract: A casing for an electronic control device, by which a cover and a casing body are reliably sealed up while preventing the cover from warping or from being distorted, although the cover is made of a thin sheet material. The electronic control device casing comprises: a casing body having an opening in its upper face portion for casing a printed circuit board; a cover made of a sheet material for closing the opening of the casing body; a groove portion formed in the open edge portion of the casing body; a liquid sealing material fitted in the groove portion for sealing the open edge portion of the casing body and the flange portion of the cover; and a ridge portion having a generally U-shaped section and formed on the flange portion of the cover for being fitted in the groove portion of the casing body.

Abstract: Ribs are unitarily formed on an outer wall surface of a casing to compensate for an inclination of an inner wall surface corresponding to a draw angle provided for molding the inner wall surface. The direction of pins of a casing connector which connects an electronic control circuit of a printed circuit board accommodated within the casing to external wiring coincides with the direction of insertion of a checker connector. Alternatively, a protrusion or recess may be formed on a jig device on which the casing is placed for connection to an operation checking apparatus.

Abstract: A pyroelectric infrared ray sensor is constituted with a current-voltage converting circuit utilizing an impedance of feedback capacity, obtained by adding the feedback capacity to an operational amplifier receiving as an input an element current from a pyroelectric element, whereby the current-voltage converting circuit can be improved in S/N ratio without altering characteristics of the pyroelectric element.

Abstract: A pyroelectric infrared ray sensor includes a voltage amplifying circuit provided with a signal amplifying part having a non-inverting amplifier, with an integrating circuit, and with voltage dividing resistors connected at a position where an input V.sub.IN to the voltage amplifying circuit and an output V.sub.B of the integrating circuit are resistance-divided to a non-inverting input terminal of the signal amplifying part which is practically formed by an operating amplifier, wherein the signal amplifying part includes a low-pass filter formed by a resistor and a capacitor, whereby the electrostatic capacity of the required capacitor can be minimized, and the entire circuit can be minimized in size and also in manufacturing costs.

Abstract: Steel having excellent workability and deep drawability is produced by an electric furnace-vacuum degassing process. The steel has a composition which comprises about:C: 0.0050 wt % or lessSi: 1.5 wt % or lessMn: 1.5 wt % or lessP: 0.10 wt % or lessAl: 0.10 wt % or lessS: 0.020 wt % or lessO: 0.01 wt % or lessCu: 0.02-1.5 wt %Ni: 0.02-2.0 wt %Ti and/or Nb: from 0.001 to 0.10 wt %N: from 0.0040 to 0.0090 wt %.

Abstract: According to the present invention, in case of continuously forging a cast strand in its final solidification region, in order to forge the cast strand with uniform reduction amounts on front and rear sides of the strand notwithstanding the cast strand is wrapped or floated during movement of the cast strand being drawn from molds, the head end oil chamber and the rod end oil chamber of each of positioning cylinders for adjusting the positions of anvils are connected by means of hydraulic oil passages having a selector valve, and further the hydraulic oil passages connected to the head end oil chambers of the positioning cylinders are connected to each other by means of a first bypass line.

Abstract: A pilot injection device for a fuel injection pump has an accumulate piston movable in response to a fuel pressure from a pressurizing chamber of the fuel injection pump to cause a pilot injection prior to a main injection by the pump. The device is provided with a back-pressure chamber filled with fuel and having a volume variable by the movement of the accumulate piston. Air trapped in the back-pressure chamber can be removed therefrom through a hole to improve the operation characteristic of the pilot injection device.