Browse Publications Technical Papers 2019-01-1478
2019-06-05

A Case Study on Golf Car Powertrain NVH Sources and Mitigation Methods 2019-01-1478

Throughout North America the golf market has remained nominally flat in recent history and has grown worldwide. With this growth a trend has been seen where the number of young adults as well as adults over the age of 65 years involved with the game has increased. The demographics in golf showing the most growth also have high standards for the operation of the golf car and have transcended their expectations to align with some of the qualities expected of automobiles. These shifts in consumer expectations along with market competition drive OEMs to deliver refined golf cars making noise and vibration a key aspect in development. This paper showcases a recent study to improve the powertrain N&V performance of an I.C. engine golf car. Primarily, a test-based approach was followed. Chassis rolls and on road testing were performed for vehicle benchmarking and target setting. System and component tests were completed to identify root cause and provide input to mitigation methods applied. Structural modifications were applied to reduce structure-borne noise and perceived vibration. Component modifications and additions were implemented to reduce air-borne noise, decrease the overall SPL, and improve sound quality for brand identity. The mitigation techniques applied were implemented on a vehicle and on road testing and jury evaluations were completed to benchmark the improvement golf car for both sound quantity and quality.

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