摘要:
In an optoelectronic module (1) comprising a plastics material package (2) accommodating a base (8) fixed to the package (2) and supporting an optical component (9) coupled by an optical fiber (5) to an optical connector (4) of the package (2), fiber displacements associated with thermal stresses are avoided by mounting the base so that it floats on the package (2) and possibly the connector (4). The floating mounting of the base (8) is obtained by using for fixing the base one or more adhesives (13, 14) having a greater elasticity than the adhesives used to fix each of the two ends (6, 7) of the fiber (5) to the base (8) and the connector (4), respectively.
摘要:
A method of electronic engine control for a motor vehicle includes sensing an ignition voltage of a final ignition stage, effecting a performance check of the final ignition stage in response to a control signal generated in response to sensing the ignition voltage of a final ignition stage, and providing an error flag if the control signal deviates from a predetermined control signal. An apparatus for performing the foregoing method comprises an electric control circuit that includes a sensor for detecting the ignition voltage, and control means that effects a performance check in response to a sensor output signal and emits the error flag in response to an error control signal.
摘要:
An internal combustion engine 30 capable of operating on petrol an/or methanol has an adaptive control system responsive to a lambda-sensor (23), a limiter device (21) and a multiplier device (22) which, in response to the richness of the air/fuel mixture, produce a signal (FMCOR) for influencing the fuel injection times (t.sub.i).
摘要:
In a drawing device for presses with a mechanically driven drawing ram (24) and with a sheet metal holder (5) exerting its holding force, acting on the metal sheet (27) and counteracting the drawing direction, by way of a pressure plate (7) by means of a die cushion piston (10), supporting the pressure plate and being under the effect of a pressure medium, in a fixed die cushion cylinder (12), the objective consists in avoiding, or at least reducing, the noise-generating impact shock upon impingement of the drawing ram (24) on the sheet metal holder (5) with the metal sheet (27) lying thereon.This objective has been attained by mounting to the pressure plate (7) a piston (9) with a working surface exposable in the drawing direction, and by providing a control means (22, 23) operating in dependence on the ram stroke, this control means making it possible, before placing the drawing ram (24) on the sheet metal holder (5), to accelerate the latter, by exposing the working surface to a pressure medium, toward a movement in the drawing direction, the velocity of this movement being equal to or not much lower than the velocity of the drawing ram (24) upon impingement on the sheet metal holder (5).
摘要:
A hydraulic press which includes at least one cylinder piston unit for selectively displacing a punch. The cylinder piston unit includes at least one working chamber which communicates with a reversible continuously operating working pressure medium supplier having a variable output. At least one action stroke pressure unit is operatively connected to the punch and acts upon the same only during a segment of the motion of the punch in an action stroke direction. The action stroke pressure unit is temporarily connected to a pressure medium source having a higher pressure than the pressure produced by the pressure medium supplier.