Abstract: An internal combustion engine is provided in which fuel pressure is changed and fuel injection is controlled in accordance with engine operating conditions. The internal combustion engine comprises a cylinder, a direct injection injector, a detection unit, and a control unit. The control unit includes two maps describing two factors of a fuel injection characteristic coefficient and an invalid injection period with respect to the fuel pressure of the direct injection injector. A first calculating section calculates a required fuel injection quantity. A second calculating section calculates a required fuel injection period in accordance with the required fuel injection quantity and the two factors of the fuel injection characteristic coefficient and the invalid injection period with respect to the fuel pressure. A controlling section controls the fuel injection such that the fuel is injected for the required fuel injection period.

Abstract: There is provided an internal combustion engine, in which a fuel pressure is changed and a fuel injection quantity is controlled in accordance with an engine operating condition when fuel is injected. The internal combustion engine comprises a cylinder, a direct injection injector arranged so as to supply the fuel to the cylinder, a detection unit for detecting an operating condition of the internal combustion engine, and a control unit for controlling the fuel injection.

Abstract: A number of embodiments of internal combustion engines that embody a variable valve timing mechanism for varying the valve timing during engine operation. The variable valve timing mechanism includes at least one VVT device that is located at a position that is remote from the cam shaft and in each embodiment is mounted in the cylinder block.

Abstract: A tape-like recording medium travelling and driving apparatus includes a pair of flywheels respectively rotated and driven, a first reel turntable, and a second reel turntable, a first reel gear unit provided on the first reel turntable and rotated together with the first reel turntable, a second reel gear unit provided on the second reel turntable and rotated together with the second reel turntable, and a transmission mechanism for, transmitting a rotational drive force from any one flywheel by engaging with one of the first and second reel gear units of the pair of flywheels. The transmission mechanism comprises a mid gear to which the rotational drive force is transmitted from any one flywheel of the pair of flywheels and a rotation detecting mechanism for detecting rotation of the mid gear.

Abstract: An automatic transfer apparatus includes a plurality of transfer units which are disposed to face machining units aligned with spacing. Each transfer unit comprises a support base having a workpiece supporting surface and a workpiece positioning mechanism provided on the workpiece supporting surface, an elevation member supported by the support base for vertical movement, an elevating mechanism for lifting and lowering the elevation member between first and second positions, a transfer member supported on the elevation member for movement in a transfer direction and having a workpiece supporting portion, and a reciprocating mechanism for reciprocating the transfer member.

Abstract: A rubber composition obtained by curing with a peroxide a blend comprising 100 parts by weight of an acrylic elastomer and from 20 to 100 parts by weight of a polyvinylidene fluoride resin relative to 100 parts by weight of the acrylic elastomer.

Abstract: An induction system for an internal combustion engine wherein each cylinder is served by a pair of intake pasasges having significantly different lengths for tuning them for different engine running requirements. A throttle valve arrangement controls the flow through the intake passages and the selection of the appropriate length for a given running condition.

Abstract: This protected MOS transistor circuit has a p-type semiconductor substrate, VSS terminal, input MOS transistor, first resistor connected to the gate electrode of transistor, and MOS transistor which has a gate electrode connected to the VSS terminal and a current path connected between the VSS terminal and a junction of the first resistor and the gate electrode of the input MOS transistor. This protected MOS transistor circuit further has a second resistor connected in series with the first resistor, and pn-junction diode connected reversely between the VSS terminal and the junction of the first and second resistors.

Abstract: A silhouette cutting apparatus includes a two-dimensional image scanner for reading a color separation film, a frame memory for storing a read image signal, a CRT display for displaying an image of any color separation film selectively output from the frame memory, a pointer for displaying a cross mark at one point in a desired figure in a displayed image, a latch for latching color or brightness of a displayed point of the cross mark, a comparator for comparing the data from the latch with color or brightness of all other points of image signals of any separation film selectively output from the frame memory and detecting silhouette image information of the desired figure in accordance with whether or not their difference exceeds a predetermined value, and a cutting plotter for cutting a peel-off film in accordance with the detected silhouette image information.

Abstract: An input protection device for a C-MOS device having an n-type semiconductor substrate and a p-type well region. The device comprises a diode consisting of the p-type well region and an n.sup.+ -type layer diffusion formed in the p-type well region and connected between a gate of a C-MOS FET and ground. The n.sup.+ -type layer of the diode has a higher impurity concentration and a greater diffusion depth than those of n.sup.+ -type layers formed in the p-type well region and constitute the source and drain of an n-channel MOSFET.

Abstract: A rubber composition comprising a crosslinked blend containing a mixture of from 50 to 95% by weight of an acrylic elastomer and from 5 to 50% by weight of polyethylene is disclosed. The composition has improved resistance to fuel oil, particularly alcohol-added gasoline, as well as cold temperature resistance and heat resistance, and is, therefore, useful as a fuel oil resistant material.

Abstract: Several embodiments of induction systems for an internal combustion engine wherein each cylinder is served by a pair of intake passages having significantly different lengths for tuning them for different engine running requirements. A throttle valve arrangement controls the flow through the intake passages and the selection of the appropriate length for a given running condition. Each intake passage is supplied with air from a respective plenum chamber and the plenum chambers are located at different locations within the engine compartment. In all embodiments, one plenum chamber is positioned adjacent the engine and in the embodiments, the other plenum chamber is positioned either at the end of the engine or at the opposite side. Both plenum chambers are supplied with filtered air from a common air cleaner.

Abstract: A semiconductor device comprises a semiconductor substrate of N conductivity, a semiconductor well of P conductivity type, a first semiconductor region of P conductivity type formed in the substrate, the first semiconductor region forming a source region or a drain region in a first MOS transistor of P channel type, a second semiconductor region of N conductivity type formed in the well, the second semiconductor region forming a source region or a drain region in a second MOS transistor of N channel type, and a third semiconductor region of P conductivity type for partially covering the peripheral and bottom surfaces of said second region, which are in the proximity of a boundary defined between the substrate and the well, the third semiconductor region having an impurity concentration higher than that of the well.

Abstract: A positive feedback amplifier circuit for possible use with a semiconductor memory device includes first and second MOS transistors whose current paths are connected together between two power source terminals, the gate of the first MOS transistor being connected to a clock. A third MOS transistor has a current path connected between one of the power source terminals and the gate of the second MOS transistor and also has a gate connected to the junction between the first and second MOS transistors and to a resistive means whose other end is connected to one of the power source terminals.

Abstract: A method is provided by the present invention for manufacturing a semiconductor device which includes supplying an impurity for forming an impurity area in a semiconductor substrate wherein the amount of the impurity defining the corners of said area is adjusted so that the shape of said corners is controlled. In this method, adjustment of the amount of the impurity may be accomplished by supplying the impurity to said substrate by using a mask whose corners are enlarged or reduced for increasing or reducing the opening area of the mask. The adjustment of the amount of the impurity may alternatively be accomplished by supplying an impurity of conductivity type opposite to that of said impurity to the places where the corners are to be formed.

Abstract: A semiconductor memory device includes a plurality of memory cells arranged in a matrix fashion, word lines each connected commonly to the memory cells arranged on the same row, plural pairs of data lines each pair connected commonly to the memory cells on the same column line, and a row decoder connected to the word lines. The semiconductor memory device further includes positive feedback amplifiers connected to the work lines, which respond to voltages on the word lines at a preset or higher level to pull up the potential on the word lines to a higher level.

Abstract: A trailing arm suspension for a vehicle includes a suspension arm connected at its inner and outer connecting portions to a suspension member. The outer connecting portion of the arm has a bush designed to cause a greater deflection than the bush provided in the inner connecting portion upon application of an equal radial load to both of the bushes.

Abstract: A suspension ball joint mounting mechanism in which a steering knuckle arranged swivelably in the steering operation is forked at its end by a slit. A stud portion of a ball joint stud assembly is passed through the forked portion of the steering knuckle and fastened in position by bolting, the ball portion of the ball joint stud assembly being pivotally supported to a support seat of a suspension arm so that said both portions are able to make a relative movement to each other. A dust cover is provided to sheath the support seat and steering knuckle. A plate washer is disposed between the entire area of the edge ring face of the lip portion of the dust cover and the corresponding face of the steering knuckle to allow smooth relative sliding movements thereof. Thus, the sealing performance of the joint mechanism is improved, while ensuring wear resistance thereof.

Abstract: An attachment for a cup shaped ornamental hub cap comprises a resilient clip ring assembled with the hub cap. The clip ring comprises an annular dish spring part clamped to the open inner-end of the hub cap to be axially tiltable and a plurality of spring legs extending radially and inwardly from the inner peripheral edge of the dish spring part adapted to engage with an annular recess on a cylindrical flange of a wheel body, whereby in attaching the hub cap onto the cylindrical flange of the wheel body, the spring legs of the clip are resiliently engaged with the annular recess due to tilting movement of the dish spring part.

Abstract: A shock absorbing type steering device for use in a motor vehicle, comprising a shaft adapted to transmit a torque from a steering wheel to a steering gear, which shaft consists of a first solid shaft portion and a second hollow or cylindrical shaft portion. The second cylindrical shaft portion includes a small diameter portion and a large diameter portion. Part of the first solid shaft portion is rigidly fitted in the aforesaid small diameter portion of the second cylindrical shaft portion with the aid of shear pins, while a shock-absorbing resilient material is contained in the aforesaid large diameter portion of the second cylindrical shaft portion. The shock absorbing material is of such a property that it is ruptured due to stresses exceeding a given level. A passage leading from the interior of the aforesaid large diameter portion of the second cylindrical shaft portion to atmosphere runs either through the first solid shaft portion or through the second cylindrical shaft portion.