摘要:
An absolute value transducer (1) for determining an absolute position (P) of a body (6), with a measured material element (5), as well as a process for determining the absolute position (P) of two bodies (3, 4, 6) in relation to one another. In order to be able to use the absolute value transducer (1) in as flexible a manner as possible and to detect mounting errors of the measured material element (5), provisions are made according to the present invention for a code (K) of the measured material element (5) to have a discontinuity (9) in its course and for the code (K) to be scanned outside the discontinuity for determining the absolute position (P) within the discontinuity (9), and for the scanned absolute values (W) to be combined with an offset value (A).
摘要:
An incremental transducer (1) as well as a process (D1) are provided for determining an actual position of a body (5) along a measuring path (W) and/or a change therein. A position code (7) of the incremental transducer (1) has a gap (10). To make it possible to use the incremental transducer (1) as flexibly as possible and to operate it despite dimensional tolerances of the body (5), provisions are made for converting an actual location frequency (Fi) of the position code (7) into a desired location frequency (Fs) that is independent from the length (L) of the gap (10) to generate a position signal (S) representative of the actual position or the change therein.
摘要:
The invention relates to a rotary encoder comprising internal error control with a monitoring unit comprising at least a computing module, a verification means, a memory unit and an alarm unit. The invention also relates to a method for checking a rotary encoder when said encoder is in operation, the rotary encoder generating at least one measuring signal pair representative of the amount of rotation. In order to be able to determine the functioning of the rotary encoder, even when said rotary encoder is stationary, it is provided according to the present invention that a characteristic value should be created in the monitoring unit from current amplitude values of the measuring signal pair, said characteristic value being used in a comparison with at least one quality value representative of the functional states of the rotary encoder.
摘要:
The invention relates to a rotary encoder comprising internal error control with a monitoring unit comprising at least a computing module, a verification means, a memory unit and an alarm unit. The invention also relates to a method for checking a rotary encoder when said encoder is in operation, the rotary encoder generating at least one measuring signal pair representative of the amount of rotation. In order to be able to determine the functioning of the rotary encoder, even when said rotary encoder is stationary, it is provided according to the present invention that a characteristic value should be created in the monitoring unit from current amplitude values of the measuring signal pair, said characteristic value being used in a comparison with at least one quality value representative of the functional states of the rotary encoder.
摘要:
A two-stroke internal combustion engine with at least one cylinder (1), comprising a crankcase (2) flow-connected to the cylinder (1) by at least one transfer passage (3) and provided with an air intake manifold (4) and comprising an injection device for optional introduction of a fuel into the cylinder (1) or the crankcase (2) is described. To achieve fuel-air mixing adapted to the operating state of the engine it is proposed that the injection device comprises at least one injection nozzle (11) which is oriented toward the inlet region (12) of the transfer passage (3) issuing from the air intake manifold (4) and can be controlled as a function of the direction of movement of the piston (5) and the controller of the transfer passage (3).
摘要:
A two-stroke internal combustion engine has at least one cylinder (1) receiving a piston (2) and having at least one injection nozzle (4) in the form of a multi-hole low-pressure nozzle inserted in a bore (5) in the cylinder jacket (6). The multi-hole low-pressure nozzle has a nozzle plate (15) with nozzle openings (16) arranged within an enveloping circle (17) to form a common nozzle jet (11) with an opening angle (α) dependent on the inclination of the nozzle axis (12) relative to the orifice surface of the bore and preventing the nozzle jet from being applied to the cylinder jacket. A resulting vector (14) from the velocity vector (13) of the nozzle jet in the direction of the nozzle axis (12) and the velocity vector (10) of the flushing air flow in the flow main direction defines with the cylinder jacket a maximum inclination angle (γ) of 20°.
摘要:
A piston and a reciprocating expansion engine with a piston having a piston head, a piston neck, and a piston shaft are described. The piston head has at least one groove which runs in a circumferential direction suitable for receiving a piston ring, and the piston shaft has a pin boss and, at its outer circumference, a guide surface which is suitable for guiding the piston along a cylinder inner wall. An outer diameter of the piston neck is smaller than an outer diameter of the piston head and/or of the piston shaft, and the length of the piston neck approximately corresponds to the travel of the piston in the installed state.
摘要:
A two-stroke internal combustion engine with at least one cylinder (1), comprising a crankcase (2) flow-connected to the cylinder (1) by at least one transfer passage (3) and provided with an air intake manifold (4) and comprising an injection device for optional introduction of a fuel into the cylinder (1) or the crankcase (2) is described. To achieve fuel-air mixing adapted to the operating state of the engine it is proposed that the injection device comprises at least one injection nozzle (11) which is oriented toward the inlet region (12) of the transfer passage (3) issuing from the air intake manifold (4) and can be controlled as a function of the direction of movement of the piston (5) and the controller of the transfer passage (3).
摘要:
Embodiments of the invention relate to a method for operating a steam cycle process performed in an apparatus having an evaporator or steam generator for the evaporation of a liquid working medium and an expander, which is lubricated by a lubricant, for the performance of mechanical work. The method comprises a) supplying the liquid working medium to the evaporator, in which it evaporates and is fed to the expander in the form of steam; b) supplying an ionic liquid, which at room temperature forms two liquid phases with the liquid working medium, to the expander as a lubricant; and c) separating the ionic liquid forming the lubricant for the expander from the working medium upstream of the evaporator.
摘要:
A four-stroke internal combustion engine is described, with at least one cylinder(9), a crankcase (3) which forms a crankcase pump and is connected via a valve (15, 18) each to an air manifold (16) for fresh air on the one hand and to an intake manifold (17) connecting the crankcase (3) with an intake port (11) of the cylinder (9) on the other hand, and with a reservoir (25) for lubricating oil arranged on a conveying device (26) for lubricating oil, with an oil circulation comprising the crankcase (3) as well as an oil separator (19) provided in the intake manifold (17) and with a device (23) for injecting fuel into the intake manifold (17) or into the combustion chamber (29) of the cylinder (9). In order to provide advantageous constructional conditions it is proposed that the conveying device (26) connected to the reservoir (25) comprises a duct (27) for injecting lubricating oil into the crankcase (3) and that the intake manifold leads to the oil separator (19) by circumventing the reservoir (25).