Abstract
Automatic motor engine 4 stroke system uses a carburetor engine is still less than optimal performance. To overcome these problems it created tools that the air intake tube Turbulent Air Vent Tube (AVTT). AVTT is a tool that serves to improve the quality of air intake into the cylinder motor fuel, by changing the air flow laminar to turbulent flow so that the fuel combustion process is ideal close to perfect. AVTT tube designed using aluminum material types AVTT in 6069. Installation of the air filter duct size is adjusted to the motor air filter diameter hole. To determine the performance of a motorcycle engine can be made by automatic test engine performance using a dynamometer. Tests conducted to analyze the effect of the use of AVTT on engine performance includes the automatic motor torque, data, air fuel ratio and fuel consumption. The test results showed that the use AVTT able to increase the torque of 0.06 - 13.74%, power from 0.08 - 13.74%, and the air fuel ratio of 18: 1 - 10: 1, and can reduce fuel consumption 2 - 9 % in both engine variants automatic motor 4 stroke.
Highlights
LATAR BELAKANG Pada saat ini di indonesia harga bahan bakar minyak yang mahal dan keterbatasan persediaannya, para konsumen motor saat ini kebanyakan mulai memakai kendaraan bermotor menggunakan sitem Electrical Fuel Injection (EFI), yang lebih ramah lingkungan dan lebih ekonomis
Automatic motor engine 4 stroke system uses a carburetor engine is still less than optimal performance
a tool that serves to improve the quality of air intake into the cylinder motor fuel
Summary
Daya didefinisikan sebagai laju aliran kerja dan sama dengan perkalian antara gaya linear dengan torsi. Dalam pengujian unjuk kerja mesin dengan menggunakan chassis dynamometer, untuk pengukuran daya, yang diukur adalah torsi yang dihasilkan oleh roda, yang kemudian menjadi acuan dalam perhitungan daya, selanjutnya untuk mengetahui putaran mesin (rpm) menggunakan tachometer yang sudah ada didalam dynamometer tersebut dengan cara mengkalibrasi antara perputaran roda/ban dengan perputaran roller, selain itu dapat juga menggunakan tachometer manual. Pengujian dilakukan dengan mengukur laju aliran udara dan bahan bakar, perbandingan tersebut bertujuan mengetahui pengaturan dalam kondisi operasi motor bakar. Karakteristik unjuk kerja suatu motor bakar dinyatakan juga dalam beberapa parameter diantaranya konsumsi bahan bakar dan konsumsi bahan bakar spesifik
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