Patent ID: 9704469
Date: 2017-07-11
CPC Classifications: F02D,G10K

Claim:
1. A vehicle combustion noise-masking control method, comprising: measuring a combustion pressure sensed by a combustion pressure sensor installed within a vehicle engine compartment; calculating a level of the combustion noise to be the numerical value of measured combustion pressure; determining whether the level of the combustion noise is equal to or greater than a predetermined level during a driving condition of a vehicle engine; receiving a frequency and an amplitude of the combustion pressure as measured by the combustion pressure sensor; determining a cylinder pressure level by converting the frequency and the amplitude of the combustion pressure through a fast Fourier transform (FFT); and calculating a combustion noise index based on the cylinder pressure level; determining the level of the combustion noise generated in the driving condition is within a predetermined range when the combustion noise index is within the predetermined range; and outputting a masking sound reducing the combustion noise to the inside of the vehicle when the level of the combustion noise is within the predetermined range.