摘要:
An apparatus is disclosed for venting a fuel tank of internal combustion engines or the like, wherein fuel vapors developing in the tank are received in an intermediate storage unit containing an activated carbon filter and are delivered to the induction area of the engine in dependence upon operating conditions. The delivery is accomplished by an electrically controlled tank venting valve having a pass-through opening the cross section of which is continuously changed. This is achieved by changing the pulse duty factor of the drive pulse train for this valve. The pulse duty factor may be determined in the sense of a pure control using a family of characteristic fields in dependence on rotational speed and load of the engine, or by taking into account preferably averaged Lambda values with a reduction in the cross section of the pass-through opening of the tank vent valve as the mixture becomes richer. Further, an adaptive anticipatory control is provided which enters into the calculation of the fuel quantity to be supplied or of the fuel injection signal with a correction value (ATE) and switches over to a limit control when predetermined mixture proportions are reached. The basic adaptation in the Lambda control system for calculating the fuel supply is released only if the fuel quantities originating from tank venting are negligible.
摘要:
The invention is directed to an arrangement for a fuel metering system for an internal combustion engine. The arrangement includes a computer unit for generating a fuel metering signal in dependence on the operating parameters of the internal combustion engine. The arrangement includes an oxygen sensor and a filter to which the sensor signal is applied, and a subsequent evaluation circuit for additionally influencing the fuel metering signal, preferably in a multiplicative manner. The filter output quantity and engine speed information are utilized together for an additional additive speed-dependent and an additive speed-independent influencing of the fuel metering signal via at least one control function. This arrangement permits a nearly ideal anticipatory control of the fuel metering signal which has an advantageous effect on the engine operating behavior and the exhaust gas quality, in particular with the internal combustion engine in a state of transition and the lambda control circuit deactivated.
摘要:
The invention is directed to a mixture metering arrangement for an internal combustion engine and includes an exhaust-gas sensor which is exposed to the exhaust gas of the internal combustion engine. The exhaust-gas sensor indicates the air ratio lambda and preferably has a two-level characteristic. The sensor output signals are acted upon by a follow-on controller which is preferably a PI-controller. The controller output quantity acts upon the mixture composition in a corrective fashion. In this arrangement, the control oscillation of the controller output quantity is adjusted to a predetermined amplitude by means of a superposed control. In particular, the integral component of the control oscillation is influenced in a manner causing it to have the same amplitude as the proportional component while in the steady operating condition. Thus, it is possible to maintain the maximum control frequency in any operating range of the internal combustion engine so that the controller always operates at its optimum. In addition, the effects of deviations occurring from one engine to another or from one exhaust-gas sensor to another as well as of long-term variations are suppressed.
摘要:
A composition comprising a source of metal ions and at least one polyaminoamide, said polyaminoamide comprising amide and amine functional groups in the polymeric backbone and aromatic moieties attached to or located within said polymeric backbone.
摘要:
Damper, in particular for washing machines with a spin cycle, with a housing having a central longitudinal axis and at least partially encompassing a housing interior by housing walls, a plunger displaceable in the housing along the central longitudinal axis, guided out of the housing and having at least one friction lining recess, fastening elements, arranged on open ends of the housing and the plunger, and at least one friction lining, arranged in the at least one friction lining recess and in frictional contact with opposite housing walls.
摘要:
A composition for filling submicrometer sized features having an aperture size of 30 nanometers or less comprising a source of copper ions, and at least one suppressing agent selected from compounds of formula (I) wherein the R1 radicals are each independently selected from a copolymer of ethylene oxide and at least one further C3 to C4 alkylene oxide, said copolymer being a random copolymer. the R2 radicals are each independently selected from R1 or alkyl. X and Y are spacer groups independently, and X for each repeating unit independently, selected from C1 to C6 alkylen and Z—(O—Z)m wherein the Z radicals are each independently selected from C2 to C6 alkylen, n is an integer equal to or greater than 0. m is an integer equal to or greater than 1.
摘要:
The invention relates to a coupling device (19) for coupling a frictional damper with a middle longitudinal axis (21), which is coupled to an oscillatory washing unit with a drum axis, to a machine frame of a washing machine with a spin gear. The coupling device has a first bending axis, which runs vertically to the central longitudinal axis (21) and parallel to the drum axis, a second bending axis (33) which runs vertically to the central longitudinal axis (21) and to the first bending axis and intersects both at one point, a first connecting element for connecting the coupling device (19) to the frictional damper, a second connecting element for connecting the coupling device (19) to the machine frame and a spring element (24) that is located between the first connecting element and the second connecting element and is connected to both, the flexural strength of the coupling device (19) about the second bending axis (33) being greater than the flexural strength about the first bending axis.
摘要:
A method of inhibiting lipoxygenase in a patient, for the prophylaxis and/or treatment of ischaemias and disorders in cardiac rhythm and of rheumatic, allergic and asthmatic diseases, oedemas, pulmonary embolisms, pulmonary hypertension, oxygen intoxications and ulcerations which comprises administering to such patient an effective amount of nafazatrom.
摘要:
A process for the manufacture of magnetic recording media by dispersing a mixture of particulate anisotropic magnetic material and additives in a solution of a polymeric binder in an organic solvent, compressing and then releasing the pressure on the dispersion, thereafter applying a layer of the dispersion to a non-magnetizable base, orienting the anisotropic magnetic material by means of a magnetic field, and drying the coating.
摘要:
The invention relates to an improved apparatus for the manufacture of magnetic discs carrying very thin magnetic layers, by applying a fluid dispersion of magnetic materials in a binder mixture to rigid base discs by the spin-coating process. Above the side of the base disc which is to be provided with the magnetic layer, there are arranged means which produce an aerodynamic boundary layer above the discs during rotation of the latter. This avoids the formation of surface irregularities and of coating streaks during production of the layer by spin-coating.