Local Hot Spots of Electric Water Pump Casing Over Various Pumping Loads

2021 ◽  
Author(s):  
Younghyeon Kim ◽  
Yoora Choi ◽  
Sangseok Yu
Keyword(s):  
Hot Spots ◽  
Water Pump ◽  
Electric Water Pump

Local Hot Spots of Electric Water Pump Casing Over Various Pumping Loads

2020 ◽  
Author(s):  
Younghyeon Kim ◽  
Yoora Choi ◽  
Sangseok Yu
Keyword(s):  
Temperature Distribution ◽  
Joule Heating ◽  
Hot Spots ◽  
Cooling System ◽  
Hot Spot ◽  
Maximum Temperature ◽  
Water Pump ◽  
Ir Camera ◽  
Heat Rejection ◽  
Electric Water Pump

Abstract The cooling system of an electric vehicle adopts an electric water pump. Since the lifespan of the battery is very sensitive to a very narrow temperature band, the cooling system provides key solutions. The electric water pump is a core component of the cooling system which satisfies performance and durability criteria. Since, a local hot spot of motor casing results in the degradation of motor lifespan, it is necessary to design the motor casing for effective heat rejection. In this study, two different motor casing designs are applied to reject the joule heating of the motor efficiently. The temperature distribution of each casing is investigated with an IR camera. The IR camera was used to identify the local hot spot where the heat was most generated in the pump. Since the joule heating is proportional to pump power, it is necessary to understand the operating characteristics of the electric water pump. The experimental apparatus includes a water reservoir, a bypass valve, pressure and temperature sensors, DAQ, and IR camera. The operating temperature is ranged from atmospheric temperature to 50°C. When the pump is operated with 25°C coolant, each experiment takes 1 hour for the steady-state conditions and maximum temperature up to 55 °C. Three different pump performance are investigated with two different pump casing. The coolant temperature is also changed from 25 °C to 50 °C. As a result, the local hot spot is strongly dependent to pump load and it is mainly observed near the cable connector. Since temperature distribution on the casing surface is also affected by local hot spots, it is necessary to optimize heat rejection by extended surface.

820 Development of DLC-Si coated shaft for electric water pump

2012 ◽  
Vol 2012.20 (0) ◽  
pp. _820-1_-_820-5_
Author(s):  
Hiroyuki MORI ◽  
Shintarou IGARASHI ◽  
Fumio SHIMIZU ◽  
Toshio HORIE ◽  
Naoki KAMIYA ◽  
...  
Keyword(s):  
Water Pump ◽  
Electric Water Pump

scholarly journals Heat Distribution of Micro Turbocharger Cooling System for Motorcycle Application

2019 ◽  
Vol 8 (3) ◽  
pp. 308-314
Keyword(s):  
Experimental Research ◽  
Piston Ring ◽  
Cooling System ◽  
Heat Distribution ◽  
Water Pump ◽  
The Past ◽  
Electric Water Pump ◽  
Air Blower ◽  
Turbine Bearing ◽  
The Impact

The heat produced in turbocharger has the potential to destroy the bearing system and the oil piston ring. For the past years, the researchers have focused on heat transfer of micro turbocharger. The lack of research on the cooling system of the turbocharger has motivated the author to publish this paper. In this paper, the electrical water pump with air blower is used to reduce the heat effect. The impact of adding electric water pump o heat distribution on turbocharger has been discovered by conducting experimental research. The experimental research was conducted on one cylinder, two-stroke with Lifan engine 160 cc equipped with the turbocharger. The temperatures of the turbine, bearing housing, coolant inlet and outlet are measured and analyzed in this turbocharged engine test rig.

scholarly journals Characteristic Analysis of Underwater Bearing for Canned-Type Electric Water Pump

2014 ◽  
Vol 23 (2) ◽  
pp. 186-193
Author(s):  
In Kyum Park ◽  
Hyung Jin Kim ◽  
Nam Pyo Hong ◽  
Young Ho Seo ◽  
Byeong Hee Kim
Keyword(s):  
Water Pump ◽  
Characteristic Analysis ◽  
Electric Water Pump

Small Engine Cooling and the Electric Water Pump

2004 ◽  
Author(s):  
Badih Jawad ◽  
Kerry Zellner ◽  
Chris Riedel
Keyword(s):  
Water Pump ◽  
Engine Cooling ◽  
Electric Water Pump
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