Zuhri, Abdi Afifuddin (2019) Pengaruh Variasi Konsentrasi H2 terhadap Performa Engine 4 Langkah dengan Sistem Injeksi Berbahan Bakar CNG. Sarjana thesis, Universitas Brawijaya.
Abstract
Penggunaan gas alam sebagai bahan bakar transportasi massal sudah banyak digunakan pada beberapa negara, selain itu penelitian tentang gas alam sebagai bahan bakar juga sudah dilakukan sebelumnya, salah satunya adalah tentang HCNG (Hydrogen Enriched Compressed Natural Gas). Penelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi H2 terhadap performa engine 4 langkah dengan sistem injeksi berbahan bakar CNG. Penelitian ini dilakukan dengan metode penilitian eksperimental dengan menggunakan engine 4 langkah yang sudah disesuaikan pada testbench untuk pengujian. Dengan parameter performa yang ingin diketahui berupa torsi, daya efektif, specific fuel consumption dan efisiensi termal efektif dari engine. Pengujian mengacu pada konsep dari dynotest dengan engine akan diuji performa pada setiap rpm yang berbeda pada bukaan throttle konstan dengan melakukan pengereman. Hasil penelitian menunjukkan bahwa semakin tinggi persentase H2 tidak berbanding lurus dengan peningkatan dari performa engine 4 langkah; semakin besar penambahan persentase H2 pada campuran gas alam akan meningkatkan performa engine 4 langkah sampai pada persentase yang tepat sesuai dengan parameter operasional engine; dan jika telah mencapai persentase optimalnya maka performa engine menjadi turun pada persentase H2 yanng semakin tinggi. Didapatkan persentase optimal sebesar 10% H2 dengan performa yang dihasilkan antara laim torsi 2.71 Kg.m pada putaran poros 670 rpm, daya efektif 3.28 Ps pada putaran poros 1055 rpm SFCe 0.17 Kg/Ps.Jam pada putaran poros 770 rpm dan efisiensi termal efektif 33.62% pada putaran poros 770 rpm.
English Abstract
The use of natural gas as a mass transportation fuel has been widely used in several countries, besides that research on natural gas as fuel also has been done before, one of which is about HCNG (Hydrogen Enriched Compressed Natural Gas). This study aims to determine the effect of H2 concentration variations on the 4-step engine performance with the CNG fuel injection system. This research was conducted with experimental research methods using a 4-step engine that has been adjusted to the testbench for testing. The performance parameters that we want to know in the form of torque, effective power, specific fuel consumption effective and effective thermal efficiency of the engine. testing refers to the concept of dynotest with the engine being tested for performance at each different rpm at constant throttle openings by braking. The results showed that the higher percentage of H2 is not directly proportional to the increase in the 4-step engine performance; the greater of percentage increase of H2 in the natural gas mixture will increase the 4-step engine performance to the appropriate percentage according to the engine operational parameters; and if it has reached its optimal percentage, the engine performance will decrease in the higher percentage of H2. Obtained an optimal percentage of 10% H2 with the resulting performance, among others, torque of 2.71 Kg.m at shaft speed of 670 rpm, effective power of 3.28 Ps at shaft speed of 1055 rpm, SFCe 0.17 Kg/Ps.hour at shaft speed 770 rpm and effective thermal efficiency 33.62% at shaft speed 770 rpm.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FT/2019/475/051905071 |
| Uncontrolled Keywords: | hydrogen enriched compressed natural gas (HCNG), hidrogen, compressed natural gas (CNG), performa engine. hydrogen enriched compressed natural gas (HCNG), hydrogen, compressed natural gas (CNG), engine performance |
| Subjects: | 600 Technology (Applied sciences) > 665 Technology of industrial oils, fats, waxes, gases > 665.7 Natural gas and manufactured gases |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 25 Oct 2020 14:53 |
| Last Modified: | 25 Oct 2020 14:53 |
| URI: | http://repository.ub.ac.id/id/eprint/172912 |
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