DIGITAP-An On-Line Acquisition and Processing System for Instantaneous Engine Data-Applications 770218
A versatile data acquisition system for engine pressure-time history is described. The on-line system utilizes a 12-bit sample-and-hold A/D converter in conjunction with a mini-computer. The computer controls the acquisition process and performs data processing to generate the desired results. The time base for the system is generated by a shaft mounted disk and photoelectric sensors. On-line selection based on predefined criteria of particular interest is software implemented. Statistical data are available such as the standard deviation and the histogram of maximum pressure. Teletype print, XY plot and punched paper tape are standard outputs.
Among the wide variety of potential applications of this system, some actual examples in such areas as cyclic variation, knock, friction losses and heat transfer are given.
Citation: Douaud, A. and Eyzat, P., "DIGITAP-An On-Line Acquisition and Processing System for Instantaneous Engine Data-Applications," SAE Technical Paper 770218, 1977, https://doi.org/10.4271/770218. Download Citation
Author(s):
A. Douaud, P. Eyzat
Affiliated:
Institut Francais du Pétrole (France)
Pages: 16
Event:
1977 International Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Data acquisition and handling
Heat transfer
Production control
Computer software and hardware
Sensors and actuators
Knock
Historical reference
Technical review
Statistical analysis
Pressure
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