Reduction of vibration forces transmitted from a radiator cooling fan to a vehicle body

Lim, Jong‐Hyuk; Sim, Woojeong; Yun, Seen; Lee, Dongkon; Chung, Jintai

doi:10.1016/j.jsv.2018.01.016

Cited by 8 publications

(9 citation statements)

References 10 publications

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“…The hot coolant flowing through the cooler is cooled by a forced air or fan. The main function of the fan is to ensure sufficient cooling air flow at low vehicle speeds through the various cross-sections in the cooler [23,24].…”

Section: Introductionmentioning

confidence: 99%

The Effect of a New Approach to Cooling the External Heat Exchange Surfaces of a Car Cooler with Air Nozzles on the Cooling Process

Lipnický,

Brodnianská

2024

Applied Sciences

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The paper deals with an experimental investigation of a new approach for cooling the external heat exchange surfaces of a cooler using an air pressure nozzle system. The G12+ coolant (50:50 ethylene glycol/water concentrate) is heated to an operating temperature of 80 °C and cooled by a cooler. Three ways of forced cooling of the external heat exchange surfaces of the cooler are experimentally compared—fan, nozzles, and a combination of nozzles and fan. The spacing between the nozzles and the cooler is variable from 60 to 170 mm in inline and staggered nozzle arrangements. Coolant temperatures in the cooler inlet and outlet pipes are recorded by thermistors. The air pressure nozzle system achieved an improvement in the cooling process compared to a conventional fan. At a spacing of 160 mm, the heat exchange surface is completely covered by the air flow, which leads to a reduction in cooling time and an increase in the temperature difference. The maximum temperature difference of 28.84 °C and 16.90 °C for staggered arrangement of nozzles at a spacing of 160 mm are achieved for the combination of nozzles with fan and nozzles, respectively. When comparing 60 mm and 160 mm spacing, there was an increase in thermal performance of 70.3%, 55.99%, 6.20%, and 1.83% for inline nozzles, staggered nozzles, fan with inline nozzles, and fan with staggered nozzles, respectively. The air nozzle system fully replaces the fan in the cooling process and achieves improved heat dissipation, making the cooling process significantly shorter and more efficient. In addition, the air nozzle system can also be used as an additional equipment for intensification of heat dissipation in combination with the fan.

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Section: Introductionmentioning

confidence: 99%

The Effect of a New Approach to Cooling the External Heat Exchange Surfaces of a Car Cooler with Air Nozzles on the Cooling Process

Lipnický,

Brodnianská

2024

Applied Sciences

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“…Baniasadi et al [3] carried out computational aerodynamics study on cooling fan of an engine and concluded that the pressure loss depends on blockage distances and vehicle speed. The article published by Lim et al [4] presents the importance of mass unbalance of a radiator cooling fan for its vibration during vehicle idling condition. Vibration signals of the fan blades were experimentally measured both with and without an added mass in their study.…”

Section: Introductionmentioning

confidence: 99%

Experimental Modal Analysis of Radiator Fan Module to Predict its Influence of Structural Characteristics on Vibration and Noise Contribution

Venugopal

Halder

Susarla

et al. 2022

IJE

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“…In addition, myriad researchers have attempted to reduce vibrations of vehicle parts other than engine mounts during engine idling. Lim et al [13] proposed methods for reducing the transmitted vibration forces caused by the mass unbalance of the radiator cooling fan that occurs during vehicle idling. They demonstrated that the force of vibration of the cooling fan can be reduced by increasing the stiffness of the shroud stators and decreasing the stiffness of the rubber mountings.…”

Section: Introductionmentioning

confidence: 99%

Idle Vibration Reduction of a Diesel Sport Utility Vehicle

Ryu¹,

Kim²,

Lee³

et al. 2022

Preprint

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This paper presents a study on the idle vibration reduction of a diesel sport utility vehicle (SUV). To reduce idle vibration, the transmission paths of vibration from the engine to the driver seat floor were investigated with the vehicle components related to idle vibration. Furthermore, operational deflection shape (ODS) tests were conducted to visualize the vibration shapes during engine idling. Experimental modal analyses were performed to obtain the natural frequencies and mode shapes. Through the ODS and modal tests, the vibration characteristics of the diesel SUV during idling were identified. Considering these vibration characteristics, a multi-body dynamic model for the diesel SUV described by differential equations of motion was established to evaluate the idle vibration. To implement the dynamic model effectively, the equivalent stiffnesses and damping coefficients included in the model were determined experimentally or analytically. The established dynamic model was verified by comparing the natural frequencies and idle vibration levels between simulations. Using this dynamic model, we analyzed the effects of various design variables on idle vibration and obtained an optimal design for reducing the idle vibration level. Finally, we present a design guide to reduce the idle vibration for diesel SUVs.

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Reduction of vibration forces transmitted from a radiator cooling fan to a vehicle body

Cited by 8 publications

References 10 publications

The Effect of a New Approach to Cooling the External Heat Exchange Surfaces of a Car Cooler with Air Nozzles on the Cooling Process

The Effect of a New Approach to Cooling the External Heat Exchange Surfaces of a Car Cooler with Air Nozzles on the Cooling Process

Experimental Modal Analysis of Radiator Fan Module to Predict its Influence of Structural Characteristics on Vibration and Noise Contribution

Idle Vibration Reduction of a Diesel Sport Utility Vehicle

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