Abstract: A direct injection ignition engine includes a piston with a cavity on a top surface thereof, an injector arranged at a peripheral portion of a combustion chamber to be faced to the combustion chamber for injecting a fuel directly into the combustion chamber, an ignition plug arranged to be projected to the combustion chamber for igniting the fuel introduced into the combustion chamber, an intake passage connected to the combustion chamber for introducing an intake air to the combustion chamber, intake air flow control valve arranged in the intake passage for controlling an intake air flow of an inclined vortex including a tumble component and swirl component produced in the combustion chamber, an actuator for driving the control valve, engine load detecting sensor for detecting an engine load, engine speed detecting sensor for detecting an engine speed, fuel supply controller, based on the output signals from the engine load detecting sensor and the engine speed detecting sensor, for producing control signals

Abstract: An electrophotographic member which can give printed images of high quality and is markedly high in photoresponsiveness can be provided without using halogen solvents by using a composition for charge transport layer which contains a polycarbonate resin having a recurring structural unit represented by the following formula (I) and, if necessary, a specific styryl compound, a specific hydrazone compound and the like: ##STR1## wherein R.sub.1 and R.sub.2 =alkyl, etc.R.sub.3 through R.sub.18 =H, alkyl, etc.k/m=1/1-10/1.

Abstract: A V-type two cycle, supercharged engine having scavenging ports for said cylinders includes a mechanical supercharger and a surge tank. A pair of rotors of the supercharger are horizontally arranged in parallel with each other with one positioned directly below the other and them supercharger is offset laterally toward one of the left and right banks from the center of the V-shaped space defined between the left and right banks. An air expulsion opening is formed in the supercharger housing on its side nearest to the other bank. The surge tank is disposed below the supercharger and is partly expanded upward on the side nearest the other bank.

Abstract: A novel enamine derivative is effective as a charge transport material and can provide an electrophotographic plate excellent in sensitivity, photoresponse and durability.

Abstract: A photosensitive element for electrophotography has an electrically conductive substrate and a layer structure thereon comprising a charge generating substance and a charge transport substance. An improved charge transport substance is a derivative of triphenylamine in which at least 80% of the electrons in the highest occupied molecular orbital are located on the triphenylamine skeleton. Examples of such compounds have the following formula: ##STR1## wherein X is a an optionally substituted heterocyclic radical containing at least one ring nitrogen, Q is a single bond or --C.dbd.C--, and Z.sub.1, Z.sub.2 and Z.sub.3 are H, lower alkyl or alkoxy, aryl, NO.sub.2, CF.sub.3, --N(R').sub.2, --S--C.sub.6 H.sub.5 or --S(R').sub.2.

Abstract: In an electrophotographic plate, that having an undercoating layer with smooth surface when observed by using a scanning electron microscope and an electric conductivity of at least 2.times.10.sup.-14 .OMEGA..sup.-1 .multidot.cm.sup.-1 between an electroconductive substrate and a photosensitive layer is improved in electrophotographic properties which are hardly changed by changes of circumstances.

Abstract: The block construction of an engine and more particularly the passage construction of the cooling water in an engine having the block integrally cast, the block being provided with a head portion and a cylinder portion. The cooling operation with respect to the peripheral portion of the combustion chamber is properly performed to improve the knocking resistance and the heat load resistance of the engine, the uniform cooling effect for each cylinder in the multiple cylinder engine is retained and the cooling property with respect to the portion between the adjacent cylinders is improved.

Abstract: In a four-valve engine having a pair of intake ports and a pair of exhaust ports, the hole for inserting the spark plug or the fuel injection nozzle is obliquely formed between the exhaust ports so that one end of the hole opens in the lower surface of the cylinder head at the center of the combustion chamber and the other end of the hole opens between the spring seat portions for the exhaust valve springs and the opening of the exhaust ports in the side face of the cylinder head.

Abstract: An electrophotographic plate having a protective layer comprising a fluorine-containing copolymer having monomer units of a fluoroolefin, and an alkyl vinyl ether and/or cycloalkyl vinyl ether on an organic photoconductive layer formed on the electroconductive layer is excellent in electrophotographic properties and durability.

Abstract: In a spark-ignited engine in which a spark plug is supported so that its igniting tip is centrally located in the combustion chamber, a bore for forming a coolant passage is provided in the wall of the cylinder head defining the combustion chamber to extend between an exhaust port and a threaded bore into which the spark plug is screwed. The bore is formed to extend from a cooland inlet formed in the lower side of the cylinder head through which coolant from the cylinder block enters the cylinder head to the water jacket formed in the cylinder head so that the coolant from the cylinder block flows through the bore under the pressure difference between the coolant inlet and the water jacket.

Abstract: Good adhesion to cases or bobbins of flyback transformers is realized in the flyback transformers produced by insulation treatment with an unsaturated polyester resin adhesive.

Abstract: A setting resin composition, comprising:(A) an unsaturated polyester having at least 30% of all the terminal groups thereof sealed each with a group represented by the general formula (I): ##STR1## wherein, n stands for an integer of 0 to 8, and (B) a dicyclopentadiene type resin containing 50 to 100% by weight of polymerized dicyclopentadiene units.

Abstract: Flyback transformers having good adhesiveness, crack resistance, arc resistance, without producing corona discharge can be produced by insulation treating flyback transformers with a low-shrinkage resin composition comprising (a) an unsaturated polyester produced by reacting partially esterified dicyclopentadiene carboxylic acid, which has been obtained by reacting dicyclopentadiene or hydroxylated dicyclopentadiene, and maleic acid or anhydride, with one or more polyhydric alcohols, (b) a monomer having a vinyl group and (c) a low-shrinkage agent.

Abstract: An oligomer having, as the constitutional component thereof, (dihydrodicyclopentadienyl)-maleates or -fumarates of the general formula I: ##STR1## (I)wherein, R is H or ##STR2## and possessing a softening point in the range of from 50.degree. to 180.degree. C. and solubility in organic solvents. It is obtained by polymerizing the compound having the above general formula I under heating at a temperature of 220.degree. to 300.degree. C. in the absence of a catalyst.

Abstract: A thermosetting resin composition comprising (I) a polybutadiene derivative obtained by conducting reaction of (A) a compound having active hydrogen obtained by reacting dicyclopentadiene or hydroxylated dicyclopentadiene with maleic anhydride or acid to yield partially esterified dicyclopentadienecarboxylic acid, which is further reacted with monoglycidyl ether or ester, (B) a butadiene homopolymer or copolymer having one or more hydroxyl groups and number average molecular weight of 1000 to 5000, and (C) a diisocyanate in ratios in terms of functional group equivalent ratio of (A)/(B)/(C) being 0.6-1.0/1.0/1.2-2.0, and (II) a polymerizable monomer having at least one polymerizable double bond in the molecule can be handled easily and cured at normal temperatures to give cured articles having good properties without losing excellent properties of polybutadiene as elastomer.

Abstract: A resinous composition comprising(1) 40-90 parts by weight of one or more oligomers obtained by reacting a polyhydric alcohol or its derivative with a monobasic acid of the formula, ##STR1## wherein X is an .alpha.,.beta.-unsaturated hydrocarbon group having 2 or 3 carbon atoms, and(2) 10-60 parts by weight of one or more polymerizable monomers having at least one polymerizable double bond in the molecule, has high solid content and gives molded articles excellent in water resistance, chemical resistance and hardness rise in addition to excellent properties of conventional unsaturated polyester resins.

Abstract: Percent take-up feed of a yarn, which is taken up onto a pirn by rotary surface contact with a take-up roller via delivery rollers, is time-functionally and continuously changed by a speed converter which is inserted into a rotation transmission mechanism between both rollers and whose speed conversion ratio is adjusted by a pilot shaft in accordance with a programme which is designed on the basis of the take-up feed characteristic curve in order to obtain a yarn of uniform stretch property, the characteristic curve being in practice approximated by a combination of three or fewer straight lines.