Parallel spreadsheet evaluation and dynamic cycle detection

2021 ◽  
Author(s):  
Alexander Asp Bock
Keyword(s):  
Dynamic Cycle ◽  
Cycle Detection

Dynamic cycle detection

1983 ◽  
Vol 17 (4) ◽  
pp. 185-188 ◽  
Author(s):  
Oded Shmueli
Keyword(s):  
Dynamic Cycle ◽  
Cycle Detection

DEVELOPMENT OF THE COMBUSTION CHAMBER OF GAS ENGINE, CONVERTED ON THE BASIS OF DIESELS D-120 OR D-144 ENGINES TO WORK FOR ON LIQUEFIED PETROLEUM GAS

2019 ◽  
pp. 2-8
Author(s):  
Serhii Kovalov
Keyword(s):  
Combustion Chamber ◽  
Compression Ratio ◽  
Diesel Engines ◽  
Combustion Engine ◽  
Motor Fuel ◽  
Liquefied Petroleum Gas ◽  
Gas Engine ◽  
Chamber Volume ◽  
Motor Fuels ◽  
Dynamic Cycle

The expediency of using vehicles of liquefied petroleum gas as a motor fuel, as com-pared with traditional liquid motor fuels, in particular with diesel fuel, is shown. The advantages of converting diesel engines into gas ICEs with forced ignition with respect to conversion into gas diesel engines are substantiated. The analysis of methods for reducing the compression ratio in diesel engines when converting them into gas ICEs with forced ignition has been carried out. It is shown that for converting diesel engines into gas ICEs with forced ignition, it is advisable to use the Otto thermo-dynamic cycle with a decrease in the geometric degree of compression. The choice is grounded and an open combustion chamber in the form of an inverted axisymmetric “truncated cone” is developed. The proposed shape of the combustion chamber of a gas internal combustion engine for operation in the LPG reduces the geometric compression ratio of D-120 and D-144 diesel engines with an unseparated spherical combustion chamber, which reduces the geometric compression ratio from ε = 16,5 to ε = 9,4. The developed form of the combustion chamber allows the new diesel pistons or diesel pistons which are in operation to be in operation to be refined, instead of making special new gas pistons and to reduce the geometric compression ratio of diesel engines only by increasing the combustion chamber volume in the piston. This method of reducing the geometric degree of compression using conventional lathes is the most technologically advanced and cheap, as well as the least time consuming. Keywords: self-propelled chassis SSh-2540, wheeled tractors, diesel engines D-120 and D-144, gas engine with forced ignition, liquefied petroleum gas (LPG), compression ratio of the internal com-bustion engine, vehicles operating in the LPG.

scholarly journals In-Cylinder Pressure Based Engine Knock Classification Model for High-Compression Ratio, Automotive Spark-Ignition Engines Using Various Signal Decomposition Methods

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3117
Author(s):  
Junghwan Kim
Keyword(s):  
Learning Algorithm ◽  
Wavelet Packet ◽  
Decomposition Methods ◽  
Classification Model ◽  
Misclassification Rate ◽  
Cylinder Pressure ◽  
Intrinsic Mode Functions ◽  
Normal Cycle ◽  
Engine Knock ◽  
Cycle Detection

Engine knock determination has been conducted in various ways for spark timing calibration. In the present study, a knock classification model was developed using a machine learning algorithm. Wavelet packet decomposition (WPD) and ensemble empirical mode decomposition (EEMD) were employed for the characterization of the in-cylinder pressure signals from the experimental engine. The WPD was used to calculate 255 features from seven decomposition levels. EEMD provided total 70 features from their intrinsic mode functions (IMF). The experimental engine was operated at advanced spark timings to induce knocking under various engine speeds and load conditions. Three knock intensity metrics were employed to determine that the dataset included 4158 knock cycles out of a total of 66,000 cycles. The classification model trained with 66,000 cycles achieved an accuracy of 99.26% accuracy in the knock cycle detection. The neighborhood component analysis revealed that seven features contributed significantly to the classification. The classification model retrained with the seven significant features achieved an accuracy of 99.02%. Although the misclassification rate increased in the normal cycle detection, the feature selection decreased the model size from 253 to 8.25 MB. Finally, the compact classification model achieved an accuracy of 99.95% with the second dataset obtained at the knock borderline (KBL) timings, which validates that the model is sufficient for the KBL timing determination.

Oxidative decomposition properties of cationic exchange resins producing SO42− in power plants

2015 ◽  
Vol 71 (10) ◽  
pp. 1478-1484
Author(s):  
Zhiping Zhu ◽  
Chenlin Dai ◽  
Sen Liu ◽  
Ye Tian
Keyword(s):  
Data Analysis ◽  
Organic Carbon ◽  
Power Plants ◽  
Strong Acid ◽  
Residual Chlorine ◽  
Sulphate Content ◽  
Cationic Exchange ◽  
Exchange Resins ◽  
Dynamic Cycle ◽  
Decomposition Properties

The sulphate content of a system increases when strong-acid cationic exchange resins leak into a system or when sulphonic acid groups on the resin organic chain detach. To solve this problem, a dynamic cycle method was used in dissolution experiments of several resins under H2O2 or residual chlorine conditions. Results show that after performing dynamic cycle experiments for 120 hours under oxidizing environments, the SO42− and total organic carbon (TOC) released by four kinds of resins increased with time, contrary to their release velocity. The quantity of released SO42− increased as the oxidizing ability of oxidants was enhanced. Results showed that the quantity and velocity of released SO42− under residual chlorine condition were larger than those under H2O2 condition. Data analysis of SO42− and TOC released from the four kinds of resins by the dynamic cycle experiment revealed that the strength of oxidation resistance of the four resins were as follows: 650C > 1500H > S200 > SP112H.

Wearable PVDF transducer for biomechanical energy harvesting and gait cycle detection

2016 ◽  
Author(s):  
Antonino Proto ◽  
Benish Fida ◽  
Ivan Bernabucci ◽  
Daniele Bibbo ◽  
Silvia Conforto ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Gait Cycle ◽  
Cycle Detection

The Dynamic Cycle of the Human Heart During Insulin Hypoglycemia and after Injection of Glucose II

Cardiology ◽  
1958 ◽  
Vol 33 (5) ◽  
pp. 365-370 ◽  
Author(s):  
Paulo De Paula E Silva ◽  
W. Raab ◽  
Yvonne K. Starcheska
Keyword(s):  
Human Heart ◽  
Insulin Hypoglycemia ◽  
Dynamic Cycle

scholarly journals Proses Administrasi Kurikulum

2019 ◽  
Author(s):  
ANNISA
Keyword(s):  
Central Government ◽  
Educational Programs ◽  
Regional Government ◽  
Administrative Authority ◽  
Quality Requirements ◽  
Decentralized System ◽  
The Republic ◽  
The Government ◽  
Dynamic Cycle ◽  
Centralized System

Considering that the Government of the Republic of Indonesia consists of the central government and regional governments, the administrative system also "adjusts so that a centralized system and a decentralized system are subjected. The system of centralized centralization is a system that refers to the administrative authority that is in the central government. Whereas the decentralized system is a system referring to the administrative authority that is in the regional government The implementation of the two administrative systems is a dynamic cycle and administrative mechanism, one related to each other and supporting each other In relation to the administration of educational programs (administration of curriculum), in Indonesia both systems have been applied The application is intended to support the integration and harmony in the implementation of education or curriculum that is realized through the quality requirements and management authority.

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