摘要:
A polyolefin resin composition is disclosed which comprises (a) a crystalline propylene polymer in an amount of 40% or more to less than 95% by weight, (b) an ethylene/.alpha.-olefin rubber in an amount of from 5 to 40% by weight, and (c) a linear or branched specified block copolymer in an amount of from 0.1 to 20% by weight containing a polyethylene block segment A having a melting temperature as measured with a differential scanning calorimeter of from 80.degree. to 120.degree. C. and an ethylene/.alpha.-olefin copolymer block segment B, the total content of components (a), (b), and (c) being 100% by weight, which composition has excellent dispersibility of the rubber used, so that moldings having an excellent balance between rigidity and impact resistance are obtained therefrom, and is hence suitable for use in the field of moldings required to have rigidity and impact resistance.
摘要:
In the system where multiple devices share one circuit by a sequential transmission system, each of the devices is adopted to monitor the transmission from a device one stage before the device which is immediately prior to the device and when a predetermined period of time passes after the transmission from the devices two stages before the device was made, the device is made to start its own transmission without waiting for the transmission from the device immediately therebefore. The transmission control system mentioned above does not fail and the sequential transmission continues even if a part of the devices fails.
摘要:
A flow control valve is provided for use in an exhaust gas recirculation system of an internal combustion engine, whereby a constant flow of the recirculating gas may be maintained. The valve comprises a first and second valve chamber separated by a flow orifice with a valve body being provided to effect opening and closing of the flow orifice. Exhaust gas entering the first chamber passes through the orifice into the second chamber and to the engine intake system. Located upon one side of the valve body is a diaphragm responsive to exhaust gas pressure in the first chamber and connected to move the valve body in response thereto. A pressure compensating piston located in the second valve chamber has the intake manifold pressure applied thereto and is configured to balance the effects of said intake manifold pressure upon the valve body. Throttling means in the form of a throttling orifice define the entrance of the exhaust gases into said first valve chamber and spring means apply, to the side of said diaphragm opposite the side to which the exhaust gas pressure is applied, a force tending to counterbalance an opposing force slightly higher the the force of atmospheric pressure acting upon the diaphragm. Atmospheric pressure is also applied to the pressure compensating piston in a direction opposite to the direction in which intake manifold pressure is applied.
摘要:
Calibration means are provided for a flow rate measuring system which includes a bridge circuit having four interconnected flow orifices and a first and a second pair of diagonally opposed flow points intermediate said orifices. The first pair of points are connected as input and output to said bridge circuit within a flow passage containing the fluid flow whose rate is to be measured. A constant capacity pump is connected across the second pair of points and a pressure converter adapted to be connected across said second pair of points is also provided. Calibration is effected by shutting fluid flow to and from said first pair of points while maintaining said constant capacity pump in operation and connecting the pressure converter across the second pair of points. The pressure converter which generates an output signal representative of the fluid flow to be measured may thus be calibrated by adjusting the output signal to represent one-half the flow rate through the constant capacity pump.
摘要:
Catalyst for purifying exhaust gas by removing nitrogen oxides, which is constituted by forming a diffused layer of copper on the surface of a metallic material of specified shape selected from a group of iron, iron alloys, nickel and nickel alloys; and its manufacturing process.
摘要:
A frequency meter for vehicle running speed versus fuel consumption rate adapted to calculate an instant value of fuel consumption rate at a predetermined time interval and to drive a particular counter in a counter matrix arranged in a co-ordinate of vehicle running speed and fuel consumption rate, said particular counter corresponding to a point in the co-ordinate corresponding to particular vehicle running speed and fuel consumption rate at a given moment. The frequency matrix thus obtained can favourably be used to draw frequency contour lines regarding occurance of various combinations of vehicle running speeds versus fuel consumption rates.
摘要:
A secondary air supply control system for internal combustion engine exhaust gas purification systems which comprises a first change-over valve for selectively supplying secondary air from the air pump either to the upstream side of the catalytic converter or to a second change-over valve, an on-off valve and control valve for controlling the switching of the first changeover valve, a second change-over valve for supplying the secondary air from the first change-over valve to the exhaust ports of the engine for discharging into the atmosphere, and a second control valve for controlling the switching action of the second change-over valve, part of the secondary air from the air pump being supplied to the downstream side of the catalytic converter.
摘要:
A method of and a device for controlling the output of an internal combustion engine, in which a mixture in an amount corresponding to the amount required for the full load operation of the engine is caused to flow into each cylinder in the suction stroke, even in the case of partial load operation, and, in the compression stroke, the amount of mixture required for the particular load of the engine is remained in the cylinder and the remaining part thereof is caused to flow back into the suction system from the cylinder.
摘要:
A method of producing a high-strength heat-insulating casting consisting of a flexible ceramic molded liner product onto which a metallic article has been cast from molten metal, after which said liner has been impregnated with a heat-resistant binder.
摘要:
Disclosed herein is a structure for preventing leakage of lubricating oil in rotary-piston internal combustion engines. The structure comprises passages formed in the side walls of a rotor to allow a rotary shaft to rotatably extend therethrough, each passage having a counter-tapered opening, which diverges toward a combustion chamber. Oil seal rings are interposed between the rotary shaft and the passages.