Development of quietness for new compact SUV with third-generation e-POWER unit

Riku Sekine･Ryo Matsunaga･Takayuki Miyakawa･Masahiro Kanayama･Yukihiro Mori (Nissan Motor)

The first and second generation e-POWER systems already on the market have been gotten good reviews for EV-like quietness. We developed the third-generation e-POWER unit, achieving both high efficiency and quietness by combining a generator engine (HR14DDe engine) with a 5-in-1 system. This paper introduces Quietness development of the new compact SUV equipped with the third-generation e-POWER.

Quietness Improvement Technologies for New Generation MINIVAN equipped with fully electric drive system

Yuki Namai･Kazuhisa Okada･Yukihiro Mori (Nissan Motor)

This paper introduce the technology to improve the quietness of the next minivan, which is equipped with a third-generation e-POWER unit that achieves both high efficiency and low noise. The adoption of a high-rigidity platform and high-performance soundproofing materials achieves class-leading quietness.

Introduction of the next generation Active Noise Control for engine noise and road noise

Haruna Aimi･Wataru Ogose･Daisuke Ochi･Kazuhisa Okada･Yukihiro Mori (Nissan Motor)

Active Noise Control (ANC), which is adopted to Nissan ICE or e-POWER vehicles, is a system corresponding to a single frequency to reduce the engine rpm order. Otherwise the new ANC system is corresponding to a broadband frequency which deal with both engine generation noise and road noise, and adopted to the Nissan new minivan first in the world. In this lecture, we will present the concept for realizing high performance ANC.

Test Method for Unification and Luxury of Operating Interior Electric Curtain Noise

Sangkyun Ahn (Hyundai Motor)

Recently, the electrification of indoor parts has been rapidly progressing. In order to develop a sense of unity, luxury, and differentiation by utilizing statistical techniques, we intend to present new development criteria by matching noise measurement factors with emotional variables. Through this evaluation method, we intend to provide differentiated interior sound sensibility to our customers. This study was conducted in The order of developing emotional quantification factors and securing noise measurement and emotional data in Section 2.1, verifying significance factors through statistical analysis in Section 2.2, and establishing guidelines for differentiation, luxury, and uniformity in Section 2.3. Finally, the actual project verification was conducted through the Genesis large flagship SUV in Section 2.4

A Study on Vibration Devices for Vehicle Interior Applications

SeokHwan JI (KOMOS)

The automotive industry is developing technologies to improve driver convenience and safety through autonomous driving and in-vehicle interface systems. Interest in haptic systems using vibration motors has increased. This study investigates the structural and performance characteristics of vibration motors for vehicle interior applications. The motors must ensure stable vibration transmission, low noise, structural reliability, and proper thermal characteristics within limited spaces. Therefore, stiffness, noise, heat generation, strength, and sensitivity characteristics were analyzed and evaluated to verify the performance of vehicle interior vibration motors.