Abstract:
A high precision deterioration determination device for an exhaust gas purifier of an engine is provided. The engine includes an exhaust gas purifier disposed in an exhaust pipe of the engine, and a downstream exhaust gas sensor disposed in the exhaust pipe on the downstream of the purifier for generating outputs corresponding to components of an exhaust gas. The electronic control unit controls an air/fuel ratio of the engine to a predetermined value based on the outputs of the downstream exhaust gas sensor. The control unit is programmed to perform a non-linear filtering to extract rectangle-shaped waveform components from the outputs of the downstream exhaust gas sensor. The control unit subtracts the rectangle-shaped waveform components from the sensor outputs to extract noise components representing a degree of the catalyst deterioration.
Abstract:
A high precision deterioration determination device for an exhaust gas purifier of an engine is provided. The engine includes an exhaust gas purifier disposed in an exhaust pipe of the engine, and a downstream exhaust gas sensor disposed in the exhaust pipe on the downstream of the purifier for generating outputs corresponding to components of an exhaust gas. The electronic control unit controls an air/fuel ratio of the engine to a predetermined value based on the outputs of the downstream exhaust gas sensor. The control unit is programmed to perform a non-linear filtering to extract rectangle-shaped waveform components from the outputs of the downstream exhaust gas sensor. The control unit subtracts the rectangle-shaped waveform components from the sensor outputs to extract noise components representing a degree of the catalyst deterioration.
Abstract:
A control system for an internal combustion engine having at least one intake valve and at least one exhaust valve is disclosed. The control system includes a valve operating characteristic varying mechanism and a hydraulic control valve for controlling a hydraulic pressure to be supplied to the valve operating characteristic varying mechanism. The valve operating characteristic varying mechanism continuously varies an operating phase of the at least one intake valve and/or the at least one exhaust valve of the engine. A cleaning operation of the hydraulic control valve is performed in a predetermined operating condition of the engine. An intake air amount of the engine is controlled according to an operating condition of the valve operating characteristic varying mechanism when the cleaning operation of the hydraulic control valve is performed.
Abstract:
An air-applying device has an impeller having a center of rotation, and a case which contains the impeller. The case includes a first edge defining an inlet port of air which exposes the center of rotation, a second edge defining an outlet port of air, and a high-pressure region which presents upon operational rotation of said impeller. The high-pressure region is located within the case along a peripheral portion of the impeller. A distance between the center of rotation of the impeller and the first edge is shorter in the direction from the center of rotation to a center of the high-pressure region than from the center of rotation to region other than the high-pressure region.
Abstract:
A control device of a cooling device controls a fan based on a desired temperature around a CPU set by a target value setting unit and a temperature detected by a temperature detecting unit, so that the temperature around the CPU substantially coincides with the set desired temperature. When the detected temperature exceeds the desired temperature, the control device causes the fan to rotate. At this time, the control device monitors the level of a noise generated by the fan by means of the noise detecting unit. The control device increases the value of the voltage supplied to the fan within a range in which the detected noise does not vary abruptly. As a result, the rotation speed is gradually increased to a predetermined value without causing an abrupt rise of a noise, which may acutely irritate the user.
Abstract:
The liquid cargo transport ship according to the invention is complete with a double-hull structure comprising a side plating 2 and an internal plating 3 for constituting the bottom and side construction respectively surrounding cargo tanks 4 available for loading liquid cargo. Space domain 5 formed between the side plating 2 and the internal plating 3 is utilized for constituting a plurality of ballast tanks.A plurality of tanks 12R and 12L solely being available for ballasting purpose are provided in part of the interior of cargo tanks 4R and 4L which are disposed in the central domain of the ship 1 in the fore-and-aft direction.
Abstract:
A fuel quantity control apparatus of a supercharged diesel engine with safety measures comprises a fuel injection pump capable of increasing the fuel quantity according to the degree of supercharging, a detector for detecting the temperature in a combustion chamber or the temperature of the exhaust gas, a control circuit receiving an output of the detector, and a three-way valve driven by the control circuit to control the amount of the increase of the fuel quantity. Through the use of the apparatus when the detected temperature reaches a predetermined abnormal temperature, the amount of increase of the fuel quantity can be made zero or decreased and accidents such as melting or damage of the engine by abnormal rise of the temperature in the combustion chamber or of the temperature of the exhaust gas can be prevented.
Abstract:
Disclosed is a cutting tool, including: a cutting edge including a coating from a rake face to a flank face, and has a relief angle of not less than 15 degrees, a material of the coating having a higher wear resistance than a base material of the cutting edge, and during cutting of a work, an edge of the coating on the rake face at a top of the cutting edge is worn by friction with the work; with a progress of a wear inward in a radial direction, an edge of the coating on the flank face at the top of the cutting edge is removed by friction with the work to expose the base material thereunder; and the exposed base material is worn by friction with the work to retract the flank face inward in the radial direction.
Abstract:
A method for producing a patch including a support layer and an adhesive layer, comprising the step of forming the adhesive layer with use of an adhesive layer composition obtained by mixing an alkali metal diacetate, a drug, and a nonaqueous adhesive base such that the molar ratio between the drug and the alkali metal diacetate (the number of moles of the drug:the number of moles of the alkali metal diacetate) is from 1:0.5 to 1:15.
Abstract:
A sustained-release formulation is provided comprising a solid dispersion composition comprising a tricyclic compound or a pharmaceutically acceptable salt thereof in a mixture comprising a water-soluble polymer and a water-insoluble polymer, and an excipient.