Abstract: An exhaust gas purifier for a diesel engine is positioned in the middle of an inlet system for supplying air to a combustion chamber. The exhaust gas purifier includes an HC (hydrocarbon) supply source, and a zeolite catalyst converter, which is activated by the hydrocarbon as a reduction agent to crack NOx (oxides of nitrogen) in the exhaust gas, for thereby purifying the exhaust gas.

Abstract: The disclosure relates to a novel arrangement of a combustion chamber for diesel engines, which is defined by an inner wall including a fuel-impinging area formed of a metallic material, and a remaining area which at least partly is formed of a ceramic material or a like heat-resisting material. The arrangement serves to achieve an effective exhaust gas clarification, including the minimization of NOx emission, and to realize increased power output and reduced fuel consumption of the engine.

Abstract: A direct injection-type diesel engine includes a piston head formed with a novel piston combustion chamber, with an inner wall surface composed essentially of ceramic material having a low thermal conductivity. The combustion chamber has a reduced opening diameter to enhance a squish air flow out of the clearance space between the piston and the cylinder head, and allows significant reduction of smoke, unburnt hydrocarbon and particulates in the exhaust gas, as well as minimization of thermal loss of the engine.

Abstract: A fuel injection pump device comprising a plunger (8) facing a pressurizing chamber (20) and actuated by a cam (12), a control sleeve (14) mounted on the plunger (8) in a fuel chamber (15) , an inclined groove (8d) and longitudinal groove (8c) provided on one of the plunger (8) or the control sleeve (14) for controlling the communication of the pressurizing chamber (20) and the fuel chamber (15) by way of an oil passage (8a) formed in the plunger (8), and control ports (14a) provided on the other of the plunger (8) or the control sleeve (14), which cooperates with both of the grooves (8c) and (8d). The effective stroke of the plunger (8) can be controlled by turning the plunger (8) around its axis to change the relative position of the inclined groove (8d) and longitudinal groove (8c) and the control ports ( 14a), and the prestroke thereof, this is a fuel injection timing, can be easily controlled only by moving the control sleeve (14) in the direction of the plunger axis.

Abstract: A heartbeat rate indicator has a detection electrode on the surface of the housing such as a wristwatch case and the element of a circuit-input portion in which the existence of a switch connected to the detection electrode prevents the element from destroying with electrostatic charge produced at the moment of touching the detection electrode with the human body, the clothes or the like.Because in the non-depression state of the detection electrode, the detection electrode is connected elastically through the switch to one terminal of a power source so that the electrostatic charge produced at the moment of touching the detection electrode with the human body discharges to the one terminal of the power source.

Abstract: A novel compound, 5-(2,5-dioxotetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic anhydride, of the following formula is provided. ##STR1## This novel tetracarboxylic acid dianhydride is useful as a curing agent for epoxy resins.

Abstract: Compositions and methods for the control of coccidiosis using antibiotic K-41 and its non-toxic salts as the active anti-coccidial agent.

Abstract: A photocurable resin composition comprising (I) an unsaturated polyester resin obtained by reacting (B) an epoxy compound containing at least about 2 epoxy groups per molecule obtained by reacting metylidene diphenol with .beta.-methylepichlorohydrin or epichlorohydrin, with (C) an unsaturated monobasic acid in the presence or absence of (A) a dicarboxylic acid containing at least 4 methylene groups interposed between the two carboxyl groups, or a carboxyl-terminated oligopolyester obtained by esterifying a saturated or unsaturated dibasic acid with a polyhydric alcohol, (II) a polymerizable vinyl monomer capable of addition polymerization with the unsaturated polyester resin (I), and (III) a photopolymerization initiator having an action of promoting radical polymerization by the irradiation of light.