摘要:
A rotary compressor includes housing means in which an impeller is rotatably mounted. The impeller carries a pair of abutting vanes engaging with outer ends the inner surface of the housing means extending along an endless cam curve to form, between this inner surface and the outer surface of the impeller and portions of the vanes projecting beyond the impeller, working spaces increasing and decreasing during rotation of the impeller so as to compress a gaseous medium passing through radially inward extending inlet passages into the working spaces, to pass from there through valves in the vanes into a central pressure space from where the compressed medium is discharged through an outlet passage communicating with the pressure space; and a method for operating the compressor in which oil for lubrication and sealing is fed together with the gaseous medium into the low pressure side of the compressor to be separated from the gaseous medium by centrifugal action and passed back over gaps between the elements of the compressor to the low-pressure side, whereby a separate oil circuit is created and the pressure medium is passed free of oil to a consumer.
摘要:
A hydraulic driven press for embossing, bending, stamping, especially fine or precision blanking, comprising a plunger or ram guided in an upright or stand. The plunger or ram is supported at the stand by means of pressure chambers and a piston, the pressure chambers comprising at least one actuation pressure compartment and a counter pressure compartment which are supplied by a pump or the like with a pressurized medium. Devices measure and determine the displacement path of the plunger or ram and the plunger or ram speed as well as the delivered quantity of pressurized medium. There is also provided a regulation device for regulating plunger or ram movement as a function of the aforementioned measurement values.
摘要:
A multicylinder, stratified charge, internal combustion engine in which the main combustion chamber of each cylinder is coupled, through a conduit with controllable flow cross section, to the precombustion chamber of the cylinder which precedes it in the firing order of the engine. A flutter valve controls the flow of gases into each precombustion chamber. Part of the fuel injected just ahead of the main engine inlet valve in the induction tube of each cylinder is thereby drawn off and delivered to the precombustion chamber of the preceding cylinder in the firing order of the engine.
摘要:
To supervise operational effectiveness of catalytic reactors included in exhaust emission detoxification systems, an oxygen sensor is located downstream of the reactor to determine oxygen content in the exhaust gases from the internal combustion engine, the oxygen sensor comprising an ion conductive solid electrolyte forming an ion concentration chain and having catalytically inactive contacts, connected to a detection circuit which provides an output signal in dependence on a signal from the sensor, the output signal operating an alarm, or a transducer which interferes with proper engine operation to force the operator to have the reactor repaired. Preferably, two ion conductive chains are used, in a single sensor, or in two sensors, one being exposed to exhaust gases upstream of the catalytic reactor and the other downstream of the catalytic reactor, the output signals being provided to a differentially connected operational amplifier, to balance out extraneous influences.
摘要:
A polarizer structure for a headlight includes an interference-type polarizer followed by an absorption-type polarizer. The interference-type polarizer in one form of the invention is constituted by rectangular plate polarizing sections in a zigzag arrangement, so that the apex angle formed by adjacent polarizing sections is always 90.degree. while the angle of each polarizing section to the optic axis is 45.degree.. In another form of the invention, the polarizer sections are arranged in a diverging louvre arrangement provided with reflecting layers between the polarizing sections, both the polarizing sections and the reflecting layers at an angle of 45.degree. with the optic axis.
摘要:
The adjustment device for continuously adjusting an angular orientation of a camshaft of an internal combustion engine relative in relation to a drive wheel of the engine, has a servomotor including a rotary piston nonrotatably attached to the camshaft and a plurality of adjusting segments between the rotary piston and the drive wheel equally spaced around the outer peripheral surface of the rotary piston and alternately attached to the rotary piston and the drive wheel so as to form a plurality of volume-adjustable working chambers connectable in pairs in operation; a pump located in the drive wheel and connected with the servomotor to receive an adjustably pressurized medium and to feed the adjustably pressurized medium to the servomotor means; a first control valve device connected to the pump for controlling supply of the adjustably pressurized medium to the pump to activate and deactivated the pump; and a second control valve device connected to the working chambers to select working chamber pairs and to connect the working chambers of the selected working chamber pairs to provide a flow of pressurized medium between those working chambers and thus to adjust the angular orientation of the camshaft relative to the drive element. Advantageously four pair of working chambers are provided including a third and fourth pair arranged diametrically opposed to each other on opposite sides of the rotary piston.
摘要:
A method and a system for adjusting the lambda value of an air/fuel mixture to be supplied to an internal combustion engine wherein a throttle flap is adjusted in each case in such a manner that lean operation is obtained in a lower load range and a stoichiometric operation (lambda=1) is obtained in an upper load range.
摘要:
A device for measuring particle emissions of an internal combustion engine, in particular the soot concentration in the exhaust gas, has a signal transmission route, located between a transmitter and a receiver, which traverses a flow of exhaust gas carried in an exhaust gas tube of the engine. To avoid soiling of the active elements of the transmitter and receiver that would cause inaccuracies in measurement, the signal transmission route is embodied as a beam of light, which passes through two diametrically opposed openings in the wall of the exhaust tube. The light-admitting openings are each closed with a respective transparent disk. The disks are heatable and are heated to a temperature above the burnoff temperature of the particles. Appropriate light emitting and receiving elements are used in combination with appropriate heating and evaluation circuits which indicate the soot concentration and which control fuel input to change the soot concentration.
摘要:
A device for the removal of solid particles, particularly soot particles, from exhaust gas discharged from an internal combustion engine includes an electrofilter comprised of a plurality of parallel filter tubes each having a separator tube connected to a positive terminal of a high voltage source and a corona discharge electrode connected to a negative terminal of the high voltage source, and a centrifugal separator formed as a multi-cyclone the cyclones of which are arranged in an axial extension of the electrofilter and are connected to the same.
摘要:
A valve control arrangement for internal combustion engines with reciprocating pistons, comprises a housing having a housing opening, a valve piston axially displaceable in the housing opening, a valve closing spring, a valve plunger on which the valve piston acts against the valve closing spring, a cam piston axially displaceable in the housing opening, a valve control cam, a pressing spring which presses the cam piston against the valve control cam, a working chamber formed between the valve piston and the cam piston and arranged to be filled with pressure medium which transmits a lifting movement of the cam piston to the valve piston, the pressing spring which acts on the cam piston being arranged outside of the working chamber and supported at the side of the housing.