Measuring and testing – Test stand – For engine
Patent
1986-07-16
1987-12-22
Myracle, Jerry W.
Measuring and testing
Test stand
For engine
356439, G01M 1500
Patent
active
047139641
ABSTRACT:
A device for measuring the optical turbidity, i.e., the soot components in discharge gases of diesel engines, which is relatively simply constructed, operates safely and enables a simple handling even with differently structured measuring devices. This result is achieved in that a controller for controlling the light density of the measuring light beam is optically coupled with a light source. A sample and hold circuit is provided with the values of a measuring detector and the control detector fed to a sample and hold circuit in a time multiplex manner with the measuring values processed in a computer unit. Control values are fed to the light source by means of a control loop. In addition, the computer unit is capable of storing a plurality of measuring values or turbidity values and average value of the stored peak values, whereby the peak values are determined by a dynamic measuring of a defined number of measuring cycles. Moreover, a device is provided which feeds motor related parameter to the computer unit for triggering of measuring value determination and measuring value calculation.
REFERENCES:
patent: 3790289 (1974-02-01), Schmidt
patent: 4544273 (1985-10-01), Berndt
Grundig E.M.V. Elektro-Mechanische Versuchsantalt Max Grundig
Myracle Jerry W.
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