Cassava biogasoline was tested on electronic fuel injection vehicles in urban traffic conditions with varying engine load. Biogasoline tested includes B0, B10, B20, and B30. The engine speed was operated within 750 to 1800 rpm (low-speed range) to simulate urban traffic condition. The engine load was varied through the operation of air conditioner (AC). Fuel consumption was measured in real terms (ml/s) and CO emissions were measured with the Hesbon HG 520 Engine Gas Analyzer (EGA) in the percentage of total exhaust gas. The results showed that B10 has the lowest fuel consumption of 0.24 ml/s in conditions without AC and 0.41 ml/s with AC. Meanwhile, CO emissions tend to be constant with change in the proportion of cassava biogasoline and increased with additional AC load.
The purpose of this research are: 1) Knowing the exhaust gas emission test result from Honda Brio Satya with variation of fuel 2) Knowing the type of fuel that produces the lowest exhaust gas emission value. This research is using experimental method. This research was conducted in the automotive workshop of SMKN Udanawu Blitar Regency. Test media is a Honda Brio Satya type E 2017. The emission test used QROTEC QRO 402 gas analyzer. The results show that: 1) There is influence of fuel type to vehicle exhaust emissions, both at idle and intermediate rotation; 2) The average of CO gas emissions at idle rotation with fuel of each premium, pertalite and pertamax are 0.026%, 0.023% and 0.003%. The average of HC gas emission at idle rotation in each fuel type are 87 ppm, 86.3 ppm and 30 ppm. Thus, pertamax fuel produces the lowest level of exhaust emissions. The third fuel type still meets the threshold of motor vehicle emissions threshold in accordance with PERMEN LH No. 5 of 2010 so it is worthy to be used as an environmentally friendly learning media.
<p>Karbon deposit merupakan karbon hasil proses pembakaran <em>internal combustion engine</em> yang tertinggal di <em>combustion chamber</em> atau ruang bakar. Ada pengaruh negatif dari adanya karbon deposit terhadap penurunan daya, torsi dan peningkatan kadar gas buang pada motor pembakaran dalam. Upaya pembersihan terhadap karbon deposit mampu memperbaiki nilai daya, torsi dan kadar gas buang. Dimungkinkan upaya tersebut juga mampu memperbaiki efisiensi konsumsi bahan bakar. Tujuan dari peneltian ini adalah mengetahui perubahan konsumsi bahan bakar pada mesin K3DE 1300 CC pada setiap kecepatan putaran mesin setelah dilakukan proses pembersihan karbon deposit dari <em>combustion chamber</em>. Perubahan tingkat konsumsi bahan bakar diukur berdasarkan nilai AFR (<em>Air Fuel Ratio</em>) pada setiap kecepatan putaran mesin dengan menggunakan data hasil pengukuran yang termonitor dari alat ukur <em>chassis dyno test</em>. Hasil penelitian menunjukkan bahwa AFR uji dibanding pra uji pada kecepatan menengah (50 kph), tinggi (100 kph) dan sangat tinggi (130 kph) masing-masing bernilai (15,8:14,0);(12,8:12,4) dan (12:11,9). Dengan demikian, terjadi perubahan efisiensi konsumsi bahan bakar setelah dilakukan proses pembersihan karbon deposit dari <em>combustion chamber</em>.</p>
The increase in NOx levels produced by CNG-fueled engines occurs when the fuel switches from gasoline to gas fuel (CNG). The author changed the otto 4 stroke gasoline engine, into a CNG-fueled motorbike and provided additional cooling in the form of a burst of air to the cylinder block. Changes in engine block temperature are detected using a temperature sensor placed on the engine oil. Bursts of air cooling result in temperature changes in engine oil. Changes in engine oil temperature are accompanied by changes in the resulting NOx emissions. This study shows that with a decrease in engine oil temperature in the combustion engine, NOx emission levels also decrease. From the research results it can be ignored that by providing additional air bursts will be able to reduce NOx emissions by up to 18%
The efficiency of the production process in the home industry 'Tahu Taqwa Bintang Al Qomar' is a major issue, particularly in the soybean milling process. According to the owner, this procedure should be carried out elsewhere. The purpose of this program is to improve the efficiency of the soybean milling process, which is the primary source of tofu. Methods of this program include: 1) design of soybean grinding machine; 2) manufacture of design for soybean grinding machine with a capacity of 10 kg; 3) machine testing; and 4) training and assistance in operating the equipment to partners. The result of this community service activity is a soybean grinding machine product as a solution to partner problems, as well as increasing partner skills, especially in operating machines. This is to support the soybean milling process independently, so as to achieve the efficiency of the soybean milling process as a raw material for tofu.
Sambal pecel merupakan salah satu produk makanan khas nusantara. Home industry Dapoer Wima termasuk salah satu produsen makanan khas tersebut yang berasal dari Kediri. Kebutuhan pasar yang menjanjikan, namun di home industry tersebut belum didukung oleh peralatan produksi yang memadai. Proses penggilingan sambel pecel dilakukan di luar area produksi sehingga tidak efisien serta tidak terjaminnya higienitas produk. Tujuan dari program ini adalah untuk mendesiminasikan mesin penggiling pada home industry Sambel Pecel Dapoer Wima sehingga lebih efektif dan higienis produknya. Metode pelaksanaan program meliputi pengumpulan data, pembuatan desain mesin, perhitungan perancangan mesin, manufaktur mesin, pengujian mesin, dan bimbingan teknis pengoperasian serta penyerahan mesin ke pengguna. Hasil program yaitu mesin penggiling sambel pecel berkapasitas 10 kg/jam dengan sepesifikasi penggerak berupa motor listrik AC 1 phasa berdaya 0,5 hp, menggunakan transmisi berjenis pulley berdiamater 7,62 cm dan 25,4 cm dan v-belt tipe A, penggiling menggunakan screw conveyor dengan kapasitas pemindah 0,0257 m3/menit, dan material rangka menggunakan besi siku.
b2t to bppt gd. 620-625 serpong puspiptek area in the southern city of Tangerang province of Banten
Opak Gambir, or better known as the "semprong cake" community, is one of the leading commodities in the City of Small and Medium Enterprises (IKM) of Kediri. This community service program is a processed business "Opak Gambir" which is made from tapioca flour which is one of the household industries in Kediri City. The purpose of this community service program is as an effort to overcome the problems faced by partners with the following stages: 1) Making a semi-automatic production machine does not need to flip through the Opak Gambir dough and there are many molds in the machine. At present the production that is carried out still uses manual labor so that in producing it is still less efficient it requires a long time and a lot of costs, 2) Providing training and assistance to find out the efficiency of the production used. The result of this service program was to produce a semi-automatic Opak Gambir machine with an electric dynamo for production efficiency so that the business would get optimal profits. Keywords—: Production Machines; Opak Gambir; Production Efficiency.
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