Verifying Environmental Impact and Acoustic Performance
Vehicle manufacturers must meet increasingly stringent international standards for exhaust emissions and acoustic performance (Noise, Vibration, and Harshness – NVH). Emissions testing ensures compliance with regulatory limits, while NVH testing safeguards comfort, perceived quality, and brand reputation.
BQCIS operates accredited laboratories equipped with advanced chassis dynamometers, climatic chambers, and acoustic facilities. We execute **emissions certification tests** under WLTP, EPA, and GB/T cycles, measuring CO, NOx, hydrocarbons, and particulates for all fuel types, including hybrids.
Our **NVH engineering** services analyze interior and exterior noise and vibration using multi-channel microphones and laser vibrometers. These diagnostics support homologation under UNECE R41/R51 and help manufacturers refine vehicle comfort and acoustic performance.
Key Testing & Verification Activities
Key Benefits of NVH & Emissions Testing
Regulatory Compliance
Ensures full conformity with WLTP, EPA, and UNECE regulations for emissions and external noise certification.
Enhanced Vehicle Quality
Optimized noise and vibration control improve driver comfort and perceived product quality, especially for EVs and hybrids.
Accelerated Type Approval
Streamlined emissions and NVH validation shortens certification timelines and speeds up global market entry.
Independent Verification
Third-party testing by BQCIS demonstrates compliance credibility with regulators and industry partners.
Success Story
NVH Testing Resolves Brake Squeal Issue for OEM
A leading OEM faced launch delays after pre-production vehicles exhibited high-frequency brake squeal, impacting quality perception.
BQCIS performed acoustic vibration mapping in a semi-anechoic chamber. Data revealed caliper resonance coupled with pad material stiffness as the root cause.
A targeted damping solution eliminated the noise, achieving full NVH compliance and preserving the OEM’s brand reputation before global release.