The effect of titanium dioxide-coated copper catalytic converters to reduce noise level from four-stroke engines Warju Warju, Sudirman Rizki Ariyanto, Adam Cahya Putra, Muhammad Yandi Pratama
Universitas Negeri Surabaya
Abstract
This study aims to evaluate the ability of titanium dioxide-coated copper catalytic converters to reduce noise level from four-stroke engines. This experimental research uses Yamaha Vixion Lightning as the object of research. Research instruments used include chassis dynamometer, sound level meter, manometer, and tachometer. The noise level test was carried out in accordance with the SAE J1287 standard which then the results were compared with the noise threshold that has been regulated in the Regulation of the Minister of the Environment Number 7 of 2009. The findings of this study indicate that the average noise produced by each exhaust includes (1) standard without MCC Pt & Rh of 93.5 dB(A)- (2) standard with MCC Pt & Rh 90.8 dB(A)- (3) experiment 1 of 91.2 dB(A)- (4) experiment 2 of 91.1 dB(A)- (5) experiment 3 of 91.2 dB(A)- (6) experiment 4 of 91.5 dB(A)- (7) experiment 5 of 91.1 dB(A)- (8) experiment 6 of 91.5 dB(A)- (9) experiment 7 of 91.1 dB(A)- (10) experiment 8 of 91.2 dB(A)- (11) experiment 9 was 91 dB(A).
