Thermal modeling in an engine cooling system to control coolant flow for fuel consumption improvement

Building an engine cooling system model by GT-cool to analyze the fuel consumption of vehicle cold start in the low temperature environment stage.Getting the relationship between fuel consumption of vehicle cold start and the temperature of cooling water by model calculation.Providing a basis for optimizing the design of the engine cooling system.

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Expected economic effect after installing variator for main engine cooling system pump

VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES MARINE ENGINEERING AND TECHNOLOGIES ◽

10.24143/2073-1574-2020-4-87-94 ◽

2020 ◽

Vol 2020 (4) ◽

pp. 87-94

Author(s):

Mikhail Nikolaevich Pokusaev ◽

Alexei Viktorovich Trifonov ◽

Elena Georgievna Ilyina

Keyword(s):

Fuel Consumption ◽

Power Efficiency ◽

Cooling System ◽

Economic Effect ◽

Seawater Temperature ◽

Experimental Studies ◽

Technical Solution ◽

Maximal Effect ◽

Marine Engine ◽

Engine Cooling

The article describes the process of increasing power efficiency of the ship’s main engines along with reducing power losses on the drive of auxiliary mechanisms. The most common ship cooling systems with two circuits of fresh water and seawater have a disadvantage: the power consumed by the external circuit pump drive does not change when the temperature of the cooling seawater changes. The amount of energy taken from the effective power of the engine by the pump is significant. The technical solution proposed allows to regulate the speed of the mounted pump and to reduce fuel consumption. The chart of the variator in the seawater pump drive of the engine 8ChSP13/14 has been shown. The variator with automatic control is installed between the pump and the engine power take-off shaft, which helps to regulate the speed of the impeller for normal engine cooling. The maximal effect of the proposed modernization can be obtained under the vessel's operation with the seawater temperature below the calculated one. The description of the experimental stand developed in the laboratory of Astrakhan State Technical University, which is simulating the cooling system of the marine engine 8ChSP13 / 14, has been given. The graph of the change in torque versus time is illustrated at the impeller speed of 1 800 rpm. It has been stated that the mechanical characteristics of the pump for different operating modes obtained as a result of experimental studies allow to assess the economic effect from reducing fuel consumption. The results of economic design of installing a variable speed drive in the cooling system of a marine engine are presented as a case study of the vessel Moscow-169 (Astrakhan passenger motor ship).

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Engine Cooling System Optimization for Fuel Consumption Reduction

2019 IEEE Vehicle Power and Propulsion Conference (VPPC) ◽

10.1109/vppc46532.2019.8952496 ◽

2019 ◽

Author(s):

Jef Philippine ◽

Alice Guille Des Buttes ◽

Bruno Jeanneret ◽

Rochdi Trigui ◽

Florian Deneve ◽

...

Keyword(s):

Fuel Consumption ◽

Cooling System ◽

System Optimization ◽

Engine Cooling ◽

Fuel Consumption Reduction ◽

Consumption Reduction

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Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification

Energies ◽

10.3390/en11082127 ◽

2018 ◽

Vol 11 (8) ◽

pp. 2127 ◽

Cited By ~ 4

Author(s):

Junhong Zhang ◽

Zhexuan Xu ◽

Jiewei Lin ◽

Zefeng Lin ◽

Jingchao Wang ◽

...

Keyword(s):

Cooling System ◽

Combustion Engine ◽

Coupling Effect ◽

Combustion Process ◽

Thermal Characteristics ◽

Engine Performance ◽

Operating Conditions ◽

Coolant Flow ◽

Coupled Modeling ◽

Engine Cooling

The engine cooling system must be able to match up with the stable operating conditions so as to guarantee the engine performance. On the working cycle level, however, the dynamic thermo-state of engines has not been considered in the cooling strategy. Besides, the frequent over-cooling boiling inside the gallery changes the cooling capacity constantly. It is necessary to study the coupling effect caused by the interaction of cooling flow and in-cylinder combustion so as to provide details of the dynamic control of cooling systems. To this end, this study develops a coupled modeling scheme of the cooling process considering the interaction of combustion and coolant flow. The global reaction mechanism is used for the combustion process and the multiphase flow method is employed to simulate the coolant flow considering the wall boiling and the interphase forces. The two sub-models exchange information of in-cylinder temperature, heat transfer coefficient, and wall temperature to achieve the coupled computation. The proposed modeling process is verified through the measured diesel engine power, in-cylinder pressure, and fire surface temperature of cylinder head. Then the effects of different cooling conditions on the cyclic engine performances are analyzed and discussed.

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Monitoring of Thermostat Performance In Heavy Equipment Diesel Engine Cooling System Using An Ultrasonic Flow Meter

Proceedings of The Conference on Management and Engineering in Industry ◽

10.33555/cmei.v2i1.39 ◽

2020 ◽

Vol 2 (1) ◽

pp. 26-30

Author(s):

Setyo Haryadi ◽

Dena Hendriana ◽

Henry Nasution ◽

Gembong Baskoro

Keyword(s):

Diesel Engine ◽

Monitoring System ◽

Flow Rate ◽

Cooling System ◽

Coolant Flow ◽

Coolant Flow Rate ◽

Flow Meter ◽

Engine Cooling ◽

Heavy Equipment ◽

Ultrasonic Flow Meter

Heavy equipment uses diesel engines as the main power source. Common problem in diesel engines is engine overheat condition and the cause of this problem can come from thermostat failure. Diagnosis of the thermostat when problem occurs in the diesel engine cooling system requires a long time. This study aims to determine the condition of the coolant flow and monitor thermostat performance while engine is running so thermostat failure can be detected earlier. In this study, an ultrasonic flow meter to measure coolant flow rate in the diesel engine cooling system was developed and the measurement is displayed for monitoring the condition of thermostat. The monitoring system has been installed and the results showed significant relationship between the coolant flow rate and the performance of the thermostat. This monitoring system can show that when the thermostat is in normal condition and when the coolant temperature reaches 80oC, it is detected that the coolant flow rate from the engine block to the radiator increases significantly.

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