ENGINE TEST STAND FOR VIBROACOUSTICAL DIESEL ENGINES

摘要

The invention relates to the monitoring equipment, in particular to engine test bench for testing vibroacoustic internal combustion engine (hereinafter - DIC). Engine test bench for testing vibroacoustic ICE contains in particular an acoustic anechoic chamber engine mount system at stand mounted on the stand investigated ICE stand drive elements, kinematically linking the crank shaft of the internal combustion engine to the drive shaft brake equalizer asynchronous machine stand. The distinguishing feature is that the motor stand comprises a laser device centering, consisting of self-contained modules provisional "rough" and the final "fine" centering axes of the mating rolls (drive shaft brake equalizer of the asynchronous machine and the crankshaft of the test DIC), each of which comprises a laser diode fixedly mounted in the housing with a base integrated with the permanent magnet in the form of a "magnetic sucker"; flat panel display of rigid thin-walled sheet material (metallic or polymer sheet) fixedly mounted on the free end portion of the rotating shaft, such as a drive shaft brake equalizer asynchronous machine or crankshaft mounted on the test stand ICE; mounting pad of a ferromagnetic substance to install autonomous modules alignment laser device capable of changing its location on a surface mounting pad thereon and fixing a predetermined location of the magnetic holding force; thus, the screen surface and the mounting pad are parallel, vertically arranged, comprise deposited, e.g., colorant visually stand out centering line as deposited visible (visually discernable) centers of circles and visible (visually discernable) trajectory circles set equal radii, and the center predetermined circumferential centering line deposited at the installation site, located on the rotational axis of the drive shaft brake equalizer of the asynchronous machine, and the projection decree Foot center on the screen surface coincides (aligned) with the center of the circle centering line of the screen; in the center; circle centering line deposited at the installation site, perpendicular to the surface of the mounting pad installed module provisional "rough" laser device alignment so that a luminous diode laser of said module beam of the beam is directed to the center (rotation axis) of the end portion of the drive shaft brake equalizer of the asynchronous machine; module final laser device "accurate" centering on the centering line is circumferentially coated on the surface of the mounting pad so that the luminous beam of the laser diode is directed toward the centering line of the screen the circle coincides with said centering line. The practical implementation of the proposed engine stand construction for the internal combustion engine vibro-acoustic testing allowed, ultimately, improve the accuracy and objectivity of the results of bench ICE vibro-acoustic research. 1N. 1 and ZP f-ly, 15 yl.