Abstract: An air-fuel ratio correction coefficient calculating component is provided to an air-fuel ratio controller for an engine having the wide range air-fuel ratio sensor. The air-fuel ratio correction coefficient calculating component can cope with a time lag in detection of an air-fuel ratio detected by the wide range air-fuel ratio sensor from the time when a mixed gas of the air-fuel ratio is supplied to the engine.

Abstract: The present invention relates to a cathode ray tube having an inner magnetic shield and to a method for fixing the inner magnetic shield. The inner magnetic shield is fixed to a frame supporting a shadow mask simply with fixing members. First engagement holes are provided on each side of a first flange portion of the frame, and second engagement holes are provided on each side of a second flange portion of the inner magnetic shield. Each side of the second engagement hole is provided with a folding portion. The fixing member is inserted so as to put into the first engagement hole and the second engagement hole facing the first engagement hole from the side of the inner magnetic shield.

Abstract: A delay circuit based on gate delay enables precise adjustment of a delay value. The delay circuit is composed of a plurality of p-channel transistors and n-channel transistors connected in series which are provided with capabilities that differ, ranging from the transistors closer to a power supply to the transistors closer to an output end so as to change the output drive capability and the input capacity independently, thereby improving the adjustment accuracy of the delay value of the circuit.

Abstract: An alumina coated tool comprising a plurality of refractory layers and a substrate body. The refractory layers comprise a non-oxide layer on the surface of the substrate body, a bonding layer having a face-centered-cubic structure on the non-oxide layer, and an oxide layer on the bonding layer. The non-oxide layer is at least one of carbide, nitride and carbonitride of a metal selected from the group consisting of the Groups IVa, Va and VIa of the Periodic Table. The bonding layer is a single- or multi-coating of oxide, oxycarbide, oxynitride, oxycarbonitride of a metal selected from the group consisting of the Groups IVa, Va and VIa of the Periodic Table. The oxide layer is substantially .alpha.-Al.sub.2 O.sub.3. The epitaxial relationship between the non-oxide layer and the bonding layer enhances the bonding strength of the oxide layer to provide an alumina coated tool resistant to flaking of the oxide layer.

Abstract: There is disclosed a leakage diagnosis of an evaporative system in an internal combustion engine, and more particularly there is disclosed an evaporative system in which a more accurate leakage diagnosis can be effected using a change in the pressure in the evaporative system, and such a diagnosis method is also disclosed. The evaporative system includes a gauge line having a gauge valve, which gauge line branches off from an evaporative gas line or an evaporative gas purge line, and communicates with a point upstream of an engine throttle valve or with the ambient atmosphere, a pressure sensor for detecting the pressure in the evaporative system, and a purge valve. A leakage diagnosis of this system is effected based on detected values of the pressure sensor obtained by opening and closing the purge valve and the gauge valve. Therefore, accurate results of the diagnosis can be obtained.

Abstract: A method for hot-dip coating a steel strip comprises: (a) continuously annealing the steel strip in an annealing furnace; (b) introducing the annealed steel strip into a molten metal coating bath through a snout; (c) dipping the annealed steel strip into the molten metal coating bath; (d) controlling a pressure inside of the snout; and (e) discharging a gas containing a metal vapor from the snout to outside of the snout. An apparatus comprises an annealing furnace, a coating pot, a control device for controlling a pressure inside the snout and a gas discharging device.

Abstract: In a diagnostic system for an exhaust gas purifying apparatus in an internal combustion engine, such as a diagnostic system suitable for evaluating the exhaust gas purifying performance of a specific component, as an exhaust gas component concentration corresponding to an operating condition of the engine or an operating condition of the catalyst is detected using an exhaust gas component system, and the evaluation and diagnosis of the exhaust gas purifying apparatus are conducted on the basis of the thus-detected value directly or after subjecting it to an integral processing. With such a diagnostic system, it is not necessary to dispose a sensor upstream of the catalyst in the exhaust gas purifying apparatus, for diagnosis of the catalyst, thus permitting the system to be less expensive, highly durable and afford a high diagnostic accuracy according to operating conditions.

Abstract: A diagnosis apparatus for an evaporation system, and particularly, in an evaporation system having a gauge valve in the evaporation system without being affected by a change in internal pressure of the evaporation system, a residual amount of fuel in a fuel tank and an atmospheric density. The diagnosis apparatus is capable of precisely diagnosing the evaporation system even in the case where dirt or stain or the like adheres to the gauge valve and an air cleaner. A gauge pipe is branched between a fuel tank and a purge valve and opened to an intake pipe or atmosphere, and a gauge valve is arranged in the gauge pipe. A state detector is provided for detecting the state of a gauge system comprising the gauge valve and the gauge pipe, and a correcting feature corrects the results of diagnosis by abnormality determination apparatus on the basis of the results of detection by the state detector.

Abstract: A diagnostic and control system first checks the current operation status of the vehicle engine, when a malfunction or abnormal condition is detected by diagnostic sensors. A selection of optimum corrective measures is then made and carried out taking into account the safety of the vehicle, based on current operational status of the engine. For this purpose, a set of prioritized corrective measures is determined beforehand for each of the individual monitored items, according to detected changes in the engine operating status. The individual control measures are selected considering the safety of the vehicle, possible measures to correct the malfunction, assuring vehicle operability, and maintaining appropriate engine operating parameters such as exhaust gas mixture, fuel consumption and the like.

Abstract: A prescribed threshold level Dth for misfire judgment for each cylinder is recorded in a misfire judgment level retaining means 102 of a misfire judgment processing section 100. A combustion state parameter operation means 106 measures revolution speed of a multi-cylinder engine for each cylinder, and attains as a combustion state parameter a differential in revolution speed between a specific cylinder and other cylinders. In a misfire judgment level correction means 104, a plurality of combustion state parameters concerning the specific cylinder is attained, and the above-mentioned threshold level Dth is corrected as a function of the parameter. A misfire judgment processing means 108 compares the combustion state parameter with the threshold level Dth and diagnoses a combustion state in the specific cylinder. Namely, the corresponding cylinder is judged to be misfire when the combustion state parameter of the specific cylinder exceeds the prescribed parameter.

Abstract: A diagnosis apparatus for diagnosing a catalystic converter of a motor vehicle as to whether the catalyst suffers deterioration by estimating a temperature of the catalyst or that of the exhaust gas in the vicinity of the catalyst on the basis of a plurality of engine parameters to thereby decide deterioration of the catalyst by using as an index the estimated temperature. The apparatus includes a unit for estimating the temperature of the catalyst in a steady state by making use of an engine speed and an engine load which represent typical parameters employed in fuel injection control of the engine. The steady-state temperature facility is realized by storing the engine speeds and the engine loads obtained experimentally in the steady state operation of the engine in the form of a two-dimensional data map.

Abstract: With respect to a radiant tube burner to be used for heating a heating furnace or the like, to suppress the generation of NOx accompanying combustion, to make the structure thereof fit for a radiant tube burner equipment, to simplify the control of a fuel supply system and an air supply system, and to prevent the coking. Furthermore, to provide a combustion control scheme appropriate to a radiant tube burner. For these purposes, the present invention placed the respective tips of a fuel nozzle, e.g., pilot burner joint-use nozzle (11), and an air throat (13) in the end of a radiant tube (3) and moreover has a combustion air injection port (33) of the air throat (13) provided to be deviated in contact with or near to the inner circumferential wall surface of the radiant tube (3). In addition, a control device (307) for making a burner burn alternately.

Abstract: A diagnostic apparatus for exhaust gas clarification apparatus for internal combustion engine diagnoses the individual catalyst independently by an air/fuel ratio sensor mounted before and after the individual catalyst. The individual catalyst is diagnosed by estimating the correlation of the output signals from the air/fuel ratio sensors mounted before and after the individual catalyst. The individual diagnosis operation is performed at distinctive operation regions adequate for their corresponding diagnostic mode. A by-pass route is provided for by-passing the exhaust gas from the upstream catalyst, and a by-pass valve switches the exhaust gas flow into the upstream catalyst or into the by-pass routes. A cross-correlation function calculation valve based upon outputs from air/fuel ratio sensors permits diagnosis of degradation of the overall catalyst.

Abstract: A double side grinding apparatus for thin disklike work comprises a pair of rotatable grinding wheels having opposed circular grinding faces provided by respective end faces and so arranged as to be movable relative to each other axially thereof, and work rotating means for rotating the thin disklike work about its own axis while supporting the work in a grinding position between the grinding faces so that opposite surfaces of the work to be worked on face the respective grinding faces of the pair of the wheels, with an outer periphery of the work intersecting an outer periphery of each grinding face and with the center of the work positioned inwardly of the grinding faces.

Abstract: The present invention relates to a cathode ray tube having an inner magnetic shield and to a method for fixing the inner magnetic shield. The inner magnetic shield is fixed to a frame supporting a shadow mask simply with fixing members. First engagement holes are provided on each side of a first flange portion of the frame, and second engagement holes are provided on each side of a second flange portion of the inner magnetic shield. Each side of the second engagement hole is provided with a folding portion. The fixing member is inserted so as to put into the first engagement hole and the second engagement hole facing the first engagement hole from the side of the inner magnetic shield.

Abstract: An alumina coated tool comprising a plurality of refractory layers and a substrate body. The refractory layers comprise a non-oxide layer on the surface of the substrate body, a bonding layer having a face-centered-cubic structure on the non-oxide layer, and an oxide layer on the bonding layer. The non-oxide layer is at least one of carbide, nitride and carbonitride of a metal selected from the group consisting of the Groups IVa, Va and VIa of the Periodic Table. The bonding layer is a single- or multi-coating of oxide, oxycarbide, oxynitride, oxycarbonitride of a metal selected from the group consisting of the Groups IVa, Va and VIa of the Periodic Table. The oxide layer is substantially .alpha.-Al.sub.2 O.sub.3. The epitaxial relationship between the non-oxide layer and the bonding layer enhances the bonding strength of the oxide layer to provide an alumina coated tool resistant to flaking of the oxide layer.

Abstract: A diagnostic and control system first checks the current operation status of the vehicle engine, when a malfunction or abnormal condition is detected by diagnostic sensors. A selection of optimum corrective measures is then made and carried out taking into account the safety of the vehicle, based on current operational status of the engine. For this purpose, a set of prioritized corrective measures is determined beforehand for each of the individual monitored items, according to detected changes in the engine operating status. The individual control measures are selected considering the safety of the vehicle, possible measures to correct the malfunction, assuring vehicle operability, and maintaining appropriate engine operating parameters such as exhaust gas mixture, fuel consumption and the like.

Abstract: It is intended to detect combustion state of an internal combustion engine over the entire range where positive torque is generated. Time required from a predetermined first crank angle to a second crank angle is measured by detecting a rotation angle of a ring gear or plate with engine speed detecting means 101. Then, a combustion state parameter is calculated from said required time by combustion state detecting means 102 with an established calculation method, and combustion state is determined by combustion state judging means 103. Engine speed correction means 104 determines and feeds back a correction value for the combustion state detecting value to correct the engine speed. At the moment, the correction quantity for correcting the required time is varied so that the normal combustion value of said combustion state parameter is at a predetermined value or less, or within a predetermined range.

Abstract: A failure of a detecting circuit such as an ion current detecting circuit for detecting a combustion condition of an engine can be diagnosed at a stage for detecting a combustion condition by a combustion condition detecting apparatus equipped with a malfunction diagnosing apparatus. The engine combustion condition detecting apparatus equipped with the malfunction diagnosing apparatus is arranged by a sensing circuit for sensing an ion current flowing through a combustion chamber, a misfire judging means for judging misfire occurred in the engine in response to the detection signal derived from the sensing circuit, and a malfunction judging means for judging malfunction of the sensing circuit.

Abstract: A diagnostic equipment for an exhaust gas cleaning apparatus installed for an engine, comprising a misfire detector which detects the misfire of the engine, and a secondary-air-system failure detector which detects the failure of a secondary air system. An index corrector corrects a deterioration index calculated by a deterioration-index calculator, in accordance with the detected result of the detector. A deterioration decision unit decides if the diagnostic equipment has failed, by the use of the corrected deterioration index. In a case where the extent of the misfire or the like is severe, a decision interrupter interrupts the decision of the deterioration decision unit. Thus, even when the misfire of the engine or the failure of the secondary air system has occurred, the detection of the deterioration of a catalyst does not err. It is therefore avoided to erroneously replace the catalyst which has not deteriorated yet, or to run the engine in spite of the deterioration of the catalyst.