Abstract: A work vehicle limited in a mounting space is adapted to have an engine, which is provided with an exhaust gas cleaning device, easily arranged therein. An engine device, which is to be mounted on the work vehicle, is provided with the engine mounted on a machine body and covered with a hood, an air cleaner for cleaning air introduced into the engine, and an exhaust gas cleaning device for cleaning exhaust gas from the engine. The exhaust gas cleaning device is arranged on a flywheel housing fitted on one side portion of the engine.

Abstract: An exhaust manifold maintains the EGR ratio constant irrespective of a change in shape of the exhaust manifold and includes exhaust gas inlet sections connected to the exhaust ports of respective cylinders of the engine; a main pipe section configured so that exhaust gas entering from the exhaust gas inlet sections is collected inside the main pipe section; an EGR gas taking-out section for extracting, as EGR gas, a part of the exhaust gas; and an exhaust gas discharge section for discharging the exhaust gas. The main pipe section has formed thereon a curved section provided between the exhaust gas inlet sections and curved in a shape protruding to the side opposite the exhaust gas inlet sections. The curved section has a recess which is formed by causing a portion of the outer peripheral surface of the curved section to be recessed toward the inside of the main pipe section.

Abstract: An exhaust gas purifying catalyst which is disposed in an exhaust pipe of an internal combustion engine, includes: a substrate; and a catalyst layer, supported in the substrate and including: noble metals including platinum (Pt) and palladium (Pd); a heat-resistant inorganic oxide; and a NOx trapping material. The exhaust gas purifying catalyst adsorbs NOx in an exhaust gas when an exhaust air-fuel ratio is in a lean state and desorbs and reduces the adsorbed NOx when the exhaust air-fuel ratio is in a stoichiometric state or a rich state. (Pt/Pd) which is a ratio of amount of the platinum (Pt) to amount of the palladium (Pd) is 0.7 or more and less than 1.0.

Abstract: A work vehicle limited in a mounting space is adapted to have an engine, which is provided with an exhaust gas cleaning device, easily arranged therein. An engine device, which is to be mounted on the work vehicle, is provided with the engine mounted on a machine body and covered with a hood, an air cleaner for cleaning air introduced into the engine, and an exhaust gas cleaning device for cleaning exhaust gas from the engine. The exhaust gas cleaning device is arranged on a flywheel housing fitted on one side portion of the engine.

Abstract: There is provided an engine device in which a gas purifying filter can be disposed, with high rigidity, in an engine as one of constituent parts of the engine, the need of countermeasures against exhaust gas for each of devices such as vehicles is eliminated, and general versatility of the engine can be enhanced. The engine device includes an engine having an exhaust manifold, and a gas purifying filter which purifies exhaust gas discharged from the engine, front and rear engine leg mounting portions provided on one side surface of the engine include front and rear filter supporting bodies which support the gas purifying filter, the gas purifying filter includes the front and rear filter supporting bodies, and the front and rear filter supporting bodies are connected to the front and rear engine leg mounting portions.

Abstract: Disclosed is an engine device in which a diesel particulate filter is disposed, with high rigidity, in an engine as one constituent part of the engine, the need for countermeasures against exhaust gas for each of the devices of a vehicle is eliminated, and general versatility of the engine can be enhanced. The engine device includes an engine having an exhaust manifold, and an exhaust gas purifying device which purifies exhaust gas discharged from the engine. A plurality of filter supporting bodies which support the exhaust gas purifying device 1 are provided in a cylinder head of the engine. The diesel particulate filter is connected to the exhaust manifold, and is also connected to the cylinder head by the plurality of filter supporting bodies.

Abstract: An engine device is disclosed in which a gas purifying filter can be disposed, with high rigidity, in an engine as one constituent part of the engine and the need of countermeasures against exhaust gas for each of the devices of a vehicle is eliminated, and general versatility of the engine can be enhanced. The engine device includes a diesel engine having an exhaust manifold, and an exhaust gas purifying device which purifies exhaust gas discharged from the diesel engine. A plurality of filter supporting bodies which support the exhaust gas purifying device are provided on an upper portion of a flywheel housing in the diesel engine. The exhaust gas purifying device is connected to the exhaust manifold and connected to the flywheel housing through the plurality of filter supporting bodies.

Abstract: An exhaust gas purifying catalyst which is disposed in an exhaust pipe of an internal combustion engine, includes: a substrate; and a catalyst layer, supported in the substrate and including: noble metals including platinum (Pt) and palladium (Pd); a heat-resistant inorganic oxide; and a NOx trapping material. The exhaust gas purifying catalyst adsorbs NOx in an exhaust gase when an exhaust air-fuel ratio is in a lean state and desorbs and reduces the adsorbed NOx when the exhaust air-fuel ratio is in a stoichiometric state or a rich state. (Pt/Pd) which is a ratio of amount of the platinum (Pt) to amount of the palladium (Pd) is 0.7 or more and less than 1.0.

Abstract: A method of purifying an exhaust gas, includes: disposing a NOx trapping catalyst in an exhaust pipe of an internal combustion engine, the NOx trapping catalyst including: a metal substrate including cells, a corner portion of each of cells having an acute angle; and a catalyst layer supported in the metal substrate and including a noble metal, a heat-resistant inorganic oxide and a NOx trapping material, the catalyst layer having pores formed by addition of a pore formation promoting material, and the NOx trapping catalyst: adsorbing NOx in the exhaust gas when an exhaust air-fuel ratio is in a lean state; and desorbing and reducing the adsorbed NOx when the exhaust air-fuel ratio is in a stoichiometric state or a rich state; and removing the NOx by the exhaust air-fuel ratio being shifted between the lean state and the rich state.

Abstract: A sheet feeding device capable of again feeding, when failed to feed a sheet, the sheet by retry control is disclosed. The sheet feeding device includes a sheet tray loaded with a stack of sheets and a feed roller for sequentially feeding the sheets from the sheet tray one by one. A leading edge sensor is positioned downstream of the feed roller in the direction of sheet feed for sensing the leading edge of the sheet fed from the sheet tray. A registration roller pair is positioned downstream of the leading edge sensor in the direction of sheet feed for conveying the sheet toward an image transfer station at a preselected timing. When the retry control is to be executed, control means varies the content of control in accordance with information output from the leading edge sensor.

Abstract: A stencil printer of the present invention includes a print drum implemented as a porous hollow cylinder rotatably supported and configured such that a perforated stencil is wrapped therearound. A pressing device forms a pressing portion when pressed against the print drum. A feeding device feeds a sheet toward the pressing portion. A registration roller pair conveys the sheet toward said pressing portion at preselected timing. One roller of the registration roller pair expected to contact, when the sheet carrying an image on its one surface is reversed and again fed by said feeding device, the one surface first is provided with a highly oil-repellent surface configuration.

Abstract: A sheet feeding device capable of again feeding, when failed to feed a sheet, the sheet by retry control is disclosed. The sheet feeding device includes a sheet tray loaded with a stack of sheets and a feed roller for sequentially feeding the sheets from the sheet tray one by one. A leading edge sensor is positioned downstream of the feed roller in the direction of sheet feed for sensing the leading edge of the sheet fed from the sheet tray. A registration roller pair is positioned downstream of the leading edge sensor in the direction of sheet feed for conveying the sheet toward an image transfer station at a preselected timing. When the retry control is to be executed, control means varies the content of control in accordance with information output from the leading edge sensor.

Abstract: A first lens and a second lens are used in an optical semiconductor module, an entrance plane of the second lens is formed in a cylindrical shape. Accordingly, an optical semiconductor module can be obtained by changing a mode field of an optical fiber to an elliptically-shaped apparent mode field by using the second lens so as to be possible to efficiently couple a laser beam radiated from an optical semiconductor element with the optical fiber.

Abstract: A sheet feeding device for a printer, e.g., a stencil printer including an ink drum with a master wrapped therearound and a press drum one of which is pressed against the other during printing is disclosed. The sheet feeding device is capable of feeding a sheet at a preselected speed without regard to a print speed varying every moment due to various factors particular to an ink drum driveline, i.e., whether a set print speed is higher than a standard print speed or lower than the same. This successfully obviates the short loop of a sheet which would result in a skew or a feed failure. In addition, the device reduces noise at print speeds lower than the standard print speed and used more often than the other print speeds.

Abstract: A stencil printer or similar printer and an ink viscosity sensing device therefor are disclosed. The viscosity of ink which is the root cause of the degradation of image equality ascribable to, e.g., temperature and down time is directly sensed. The viscosity is combined with other information including a set print speed and the kind of the ink in order to effect delicate print pressure control matching the actual conditions of the printer. Stable image quality with a minimum of fluctuation is achievable against the varying environment and without resorting to complicated control pattern tables or a number of sensors.

Abstract: Benzylidenethiazolidine compounds of formula (I): ##STR1## [in which R.sup.1, R.sup.2 and R.sup.5 are each hydrogen or alkyl; R.sup.3 and R.sup.4 are each hydrogen, alkyl, formyl, alkylcarbonyl, arylcarbonyl, carboxy, alkoxycarbonyl, aryloxycarbonyl, hydroxy, alkylcarbonyloxy, formyloxy, arylcarbonyloxy, optionally substituted alkoxy or halogen; W is methylene, carbonyl or a group of formula >C.dbd.N--OV, wherein V is hydrogen, alkylcarbonyl, arylcarbonyl or optionally substituted alkyl; and n is an integer of from 1 to 3] and salts thereof have the ability to inhibit the formation of lipid peroxide in the mammalian body, and can therefore be used for the treatment of arteriosclerosis and other diseases and disorders arising from an imbalance in the lipid peroxide level. They can also be used for the preparation of the corresponding benzylthiazolidine compounds, which have a generally greater hypoglycemic activity. Processes for the preparation of these compounds of formula (I) are also provided.

Abstract: An offset printer having a printing section and a plate making section in a unitary assembly. The plate making section is located above the printing section. The printing section includes a plate drum, a rubber drum, and a press drum. The press drum is disposed above and at a predetermined angle relative to the rubber drum. The diameter of the press drum is at least two times as great as the diameter of the rubber drum.