摘要:
A device for controlling the idling speed of an internal combustion engine by controlling a quantity of operating medium which can be fed to the internal combustion engine from an operating medium source via at least two flow lines. A first valve operating area is controlled at a first valve opening by a first valve closing element, and a second valve opening area is controlled at a second valve opening by a second valve closing element. The first and the second valve closing elements can be adjusted by an actuator in such a way that the first valve opening and the second valve opening are arranged in series one behind the other between the operating medium source and the intake port of the internal combustion engine. The valve closing elements are coupled to one another in such a way that when they are actuated the first valve closing element always firstly clears a flow area at the first valve opening (34) and only then does the second valve closing element clear a flow area at the second valve opening (36).
摘要:
A rotary actuator for setting the rotation angle of control elements, especially of a throttle device which determines the flow cross-section in a line through which flow passes, for internal-combustion engines, having an electric actuating motor with a two-pole stator, stator winding and two-pole permanent-magnet rotor. In order to achieve a compact construction and manufacture which is easy in production-engineering terms, the stator poles are constructed as claw poles which are connected on opposite end sides in each case to an annular jacket for the magnetic return path, which jacket surrounds the claw poles with a radial gap. The stator winding is located as an annular coil in the annular space between the annular jacket and the claw poles. In order to produce latching of the permanent-magnet rotor outside the claw pole gaps when no current is flowing in the stator winding, the claw poles are designed asymmetrically in such a manner that, on the one hand, the radial air gap width in the central claw pole region is greater than in the two claw pole edge regions and the radial widths of the claw pole edge regions are a different size.
摘要:
A device, in particular for controlling a throttle cross-section in an operating fluid carrying line of an internal combustion engine, has a housing provided with a bore and a throttle aperture, an inlet connecting piece associated with the housing, a rotary valve acting as a throttling organ and being centrally arranged so as to be rotatable in the housing and closing the throttle aperture to a greater or a lesser extent, so that a fluid to be controlled passes through the inlet connection piece directly via the throttle opening. The rotary valve has a shaft with an axis, and also has a control edge and a rear edge which is opposite to the control edge. The control edge and the rear edge both extend obliquely relative to the axis of the shaft of the rotary valve.
摘要:
An electromagnetic rotating adjuster that has a servomotor with a can-shaped rotor, which is supported by means of a shaft via a first roller bearing and a second roller bearing, in which the disposition of the roller bearings in the one piece housing is inaccessible. For axial fixation of one second roller bearing, a spring washer is disposed in a second bearing opening and the second roller bearing is pressed against it, the outer race of the bearing having a detent groove on its circumference which groove is engaged by resilient detent tongues of a detent ring, supported in an annular groove of the housing. This assures secure fixation of the second roller bearing in the axial direction in a way that both suits the needs of large-scale mass production and is economical. The electromagnetic rotating adjuster may be used in control of the idling air in internal combustion engines. The resilient tongues and washer facilitate removal, as well as installation, of the rotor assembly.
摘要:
A final control element for a control unit, for a throttle body located in a conduit carrying a gaseous medium in an internal combustion engine, is disclosed which has a control shaft, supporting the control unit in a manner fixed against relative rotation; a power takeoff member of a final control element gear, the power takeoff member being seated on the control shaft in a manner fixed against relative rotation; and an error sensor, detecting the rotary position of the control shaft, with a rotor part that is connected to the control shaft in a manner fixed against relative rotation. The error sensor is a contactless measurement rotary angle sensor, whose rotor part is integrated by material and positive engagement with the drive member. Preferably, the rotor part is made of sheet metal, and the positive engagement is established by spraying the power takeoff member, made of plastic, onto it. The rotor part is welded to the control shaft.
摘要:
An electronic circuit for detecting measured quantities has a sensor unit for generating an analog measurement signal and a signal detecting unit (120) with a first analog/digital converter for digitizing the analog measurement signal. Differences in the fluctuations of the supply voltages that are supplied to the sensor unit and the signal detecting unit essentially result in the generation of undesirable fluctuations in the measurement signal. To minimize these effects or compensate for them, the digitized measurement signal is corrected In response to a voltage signal (U) that represents the imprecision x1 of the first supply voltage (VS1).
摘要:
An impulse turbocharger for an internal combustion engine. The impulse turbocharger is adapted to be used for controlling the air flow of an air supply conduit on the intake side of an internal combustion engine. The impulse turbocharger has a rotary valve which is connected by an elastic coupling to a rotary actuator.
摘要:
An impulse turbocharger for an internal combustion engine. The impulse turbocharger is adapted to be used for controlling the air flow of an air supply conduit on the intake side of an internal combustion engine. The impulse turbocharger has a rotary valve which is connected by an elastic coupling to a rotary actuator.
摘要:
The present invention relates to a process for delaying the deactivation of glutaryl amidase during enzyme catalysis. The enzyme catalyst is, after maximum conversion of the substrate, separated off by filtration and can be reused in a subsequent reaction batch. In each reaction cycle, the enzyme catalyst loses activity. The inactivation of the enzyme catalyst can be delayed by bringing it into contact with a thiol during the reaction.
摘要:
A process is described to specifically hydrolyze the amino acid chain of preproinsulin analogs to give the corresponding insulins. The hydrolysis is catalyzed by clostripain and, if necessary, carboxypeptidase B.