Alternator Whining Noise-A Sound Quality Concern in Passenger Car

Prasanth, B. Venkata; Wagh, Sachin; Hudson, David M.

doi:10.4271/2011-26-0018

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…Umumnya kebisingan alternator merupakan kombinasi dari sumber mekanis, aerodinamis, dan elektromagnetik. Ketika alternator dibebani dengan beban listrik (seperti head lamp, tail lamp, wiper dan HVAC) level suara semakin meningkat [2]. Kerusakan Alternator disebabkan oleh adanya kerusakan bantalan yang diakibatkan adanya unbalance poros pada alternator.…”

Section: Pendahuluanunclassified

Identifikasi Kerusakan Altenator Daihatsu Luxio dengan Metoda Fungsi Respon Frekuensi

Subekti

Hidayat

Hamid

et al. 2021

JRM

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Gasoline engines should sound soft, even tend to be minimal. But when the symptom of a rough sound emerged from the engine room, it was even more like a diesel sound that was quite loud. So that many customers have complained about the rough sound of their vehicle's engine when the engine is started, from the results of the initial inspection that was carried out as a result of the rough noise coming from the bearings on the alternator which experienced wear due to reduced lubrication in the bearings. This requires that preventive maintenance checks on the alternator are a must in the automotive world. On the basis of the above, in this paper, we will discuss the damage to the Daihatsu Luxio alternator with the frequency response function (FRF) method. Damage to the alternator can be seen at point A and point D, seen with a frequency at 1500 Hz in a damaged condition, while in good condition there is no frequency at 1500 Hz. At points B, C, E, and F have the same vibration pattern between the damaged and undamaged conditions. Visually checking results show that the bearing component at point A, it is known that the ball bearing is peeling. This results in a rough spinning of the bearing and makes the alternator make a rough noise while working.

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Section: Pendahuluanunclassified

Identifikasi Kerusakan Altenator Daihatsu Luxio dengan Metoda Fungsi Respon Frekuensi

Subekti

Hidayat

Hamid

et al. 2021

JRM

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“…In general, alternator noise is a combination of mechanical, aerodynamic, and electromagnetic systems. When the alternator is loaded with electrical loads the sound level increases [2]. Alternator damage is caused by damage to the bearings due to the unbalance of the shaft on the alternator.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Vibration on The Alternator Due to The Influence of Rotation Speed

Subekti

Pranoto

Hidayat

et al. 2021

International Journal of Advanced Technology in Mechanical, Mec

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The alternator or dynamo ampere is a device that functions as a generator that produces alternating current (AC) and converts it to direct current (DC). Signs of damage that often occur due to damage to the Alternator are the smell of burning, squeaking, dim spotlights, indicator lights, malfunction of the battery, and the supply of electricity. These signs will cause the vehicle to stop in the middle of the trip the electricity supply is very lacking. This requires that preventive maintenance checks on the alternator are a must in the automotive world. In this paper we research measuring the vibration of the alternator due to the influence of rotation speed (750 rpm and 1800 rpm), to predict damage to the alternator of the Daihatsu Luxio vehicle. The results of this study indicate that at the rotational speed of 750 rpm and 1800 rpm, were found 1x rpm the condition of the vibration amplitude on the alternator is smaller than the alternator in poor condition, this is due to the presence of an unbalanced alternator. Also, vibration due to misalignment is obtained because it has characteristics, among others: vibrations with a frequency of 1xRPM and/or accompanied by a relatively large 2xRPM, and relatively high vibration in the axial direction.

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Pleasantness and magnitude of tonal content of electric vehicle interior sounds containing subharmonics

Doleschal

Verhey

2022

Applied Acoustics

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Alternator Whining Noise-A Sound Quality Concern in Passenger Car

Cited by 7 publications

References 2 publications

Identifikasi Kerusakan Altenator Daihatsu Luxio dengan Metoda Fungsi Respon Frekuensi

Identifikasi Kerusakan Altenator Daihatsu Luxio dengan Metoda Fungsi Respon Frekuensi

Measurement of Vibration on The Alternator Due to The Influence of Rotation Speed

Pleasantness and magnitude of tonal content of electric vehicle interior sounds containing subharmonics

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