«применение современных информационно коммуникационных технологий в проведении реформ в новом узбекистане»


«Yangi O‘zbekistonda islohotlarni amalga oshirishda zamonaviy axborot-kommunikatsiya



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«Yangi O‘zbekistonda islohotlarni amalga oshirishda zamonaviy axborot-kommunikatsiya 
texnologiyalaridan foydalanish» mavzusida Xalqaro ilmiy-amaliy konferentsiya 
Andijon 
 
27-29 oktabr 2021 yil 
584 
consumes a portion of the crankshaft power, so it is important to develop an 
optimization control method for minimum power consumption by the thermal 
system actuators. An interesting cooling system configuration is a radiator fan array 
with distributed actuators under real time computer control. A number of research 
studies have been conducted to investigate. The optimization of multiple radiator 
fan(s) speeds to minimize energy usage for certain efficiency gains can impact 
engine performance. This chapter presents a detailed mathematical model to 
accurately describe the forced convection heat transfer process in internal 
combustion engines using multiple variable speed radiator fans. Based on this 
lumped parameter system model, a nonlinear optimization algorithm has been 
developed to identify the best combination of the electric motor fan operation. Smart 
thermal management systems can positively impact the performance, fuel economy, 
and reliability of internal combustion engines. Advanced cooling systems typically 
feature multiple computer controlled actuators: a three-way smart valve, a variable 
speed pump, and a variable speed electric radiator fan(s). To investigate the 
contributions of these electro-mechanical devices, a scale multifunction test bench 
was constructed which integrated these actuators, accompanying system sensors, 
and a controllable engine thermal load with real time data acquisition and control 
hardware/software. This chapter presents a series of experimental studies that focus 
on the engine’s thermal transient response to various actuators input control 
combinations. An optimal thermal management for Internal Combustion Engines 
constitutes one of the most promising and low-cost solutions for the reduction of 
fuel consumption and for increasing engine efficiency. The requirements of 
regulatory agencies are, in fact, more and more severe and innovative technological 
solutions, aimed to reduce vehicle pollutant and CO2 emissions, were proposed. 
Fuel efficiency is one of the most important factors regarding the performance 
of ground vehicles. Many innovative technologies have been integrated into modern 
automobiles to improve the fuel economy. Among these technologies, updating the 
engine cooling system has the greatest short term potential and has not been widely 
adopted. This article comprehensively investigates advanced engine cooling systems 
from a dynamic analysis perspective and the program to control strategies design.

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