The main inspection items of full-vehicle abnormal noise DMU review cover six dimensions, namely structural clearance, isolation partition, structural stiffness, secure fastening, material selection and elastic preload, collectively known in the industry as the "KISS ME" principle. Over 95% of design risks can be avoided by following the "KISS ME" principle during digital design:

■ K-Clearance (Structural Clearance): Sufficient clearance shall be reserved between components to eliminate abnormal noise induced by friction or collision.

■ I-Isolation: Isolation materials shall be added to parts with relative movement to prevent friction and impact noise.

■ S-Structure (Structural Stiffness): Large-size components shall be designed with adequate stiffness and strength to suppress excessive vibration response.

■ S-Secure (Secure Fastening): Wiring harnesses and panels shall be equipped with sufficient fixing points and reliable fastening methods for stable mounting.

■ M-Material (Material Selection): Self-lubricating or anti-rattle materials with excellent wear resistance shall be adopted, especially for decorative trims, to avoid friction abnormal noise.

■ E-Elastic (Elastic Preload): Buffering components shall be designed with sufficient compression (pre-deformation) to generate preload force and prevent impact abnormal noise.

Landtop Technology has provided full-vehicle abnormal noise DMU review services for dozens of projects of major OEMs over the years. We have accumulated abundant inspection experience and developed an efficient standardized workflow for DMU anti-rattle review.

Applicable Vehicle Types (All passenger vehicles + partial light commercial vehicles):

■ Sedans

■ SUVs

■ MPVs

■ Pickups

Scope of Application:

■ Newly-developed vehicles: 3 rounds of DMU inspection + 1 round of closed-loop verification

■ Facelift vehicles: 2 rounds of DMU inspection + 1 round of closed-loop verification

■ Design modification of a single subsystem or component