Engine noise will increase the fatigue of drivers and passengers. Excessive noise will damage the hearing and nervous system, and the harm can not be ignored.Noise level is another important index of engine performance.
The application of active noise reduction technology (low excitation motion mechanism design, all-round active sound insulation / noise reduction technology and composite materials) in cnhtc-man engine has realized ultra-low noise.The sound pressure level noise of one meter of mc11 engine is less than 95dB (a), which has reached the international advanced level.
How to realize the ultra-low noise of man technology engine?
Through a series of active noise reduction measures and combustion calibration noise reduction technology, ultra-low noise is achieved.
Active noise reduction
Heat resistant nylon cylinder head cover
Installation structure of suspension decoupling cylinder head cover
Composite damping steel oil pan
Front end restraint damping acoustic panel
"Rubber spring" no backlash air compressor intermediate gear
Air compressor intake pipe adopts 1 / 4 wavelength pipe
Design of cylinder block skirt sphere
Timing gear train rear
MAP calibration
Optimizing pre injection to reduce combustion noise in cylinder
Ultra low NVH control technology of man power
Model of human-machine comfort in the industry
