Combustion noise development:
- Ricardo uses a 24bit multi-channel noise analyser for cylinder pressure based combustion noise assessment with a user-programmable structural attenuation
- Advanced Design of Experiment (DoE) methods and processes for the optimization of combustion noise while achieving emissions and performance targets when developing calibrations
- Powertrain Combustion Mechanical Breakdown (CMB) analysis techniques have been developed to provide detailed understanding of combustion noise improvement opportunities
Noise source identification:
- Microflown probes for direct measurement of acoustic intensity and noise source ranking
- Acoustic camera for rapid concern identification
Sound quality engineering:
- Quiet vehicles are now taken as a given by the car buying public, and Ricardo routinely develops NVH characteristics that make products more appealing, reinforcing their brand values and enhancing their market position
- Ricardo WAVE software used for development of intake and exhaust acoustics
- Ricardo ENGDYN for systemic development of engine structural acoustics
- ADAMS multibody dynamic simulation for powertrain mount development
Transfer Path Analysis (TPA):
- TPA is a key tool enabling NVH engineers to quantify the noise paths from various sources and target development effort efficiently and effectively
- Ricardo NVH department routinely use time domain and matrix inversion TPA techniques to separate interior noise into airborne and structureborne components derived from vibration and noise sources