Pengaruh Naphtalene Terhadap Perubahan Angka Oktan Bensin Unjuk Kerja Motor Dan Gas Buangnya

Octane number is a reference to measure quality of gasoline as the fuel of gasoline engine. Gasoline with higher octane number gives less tendency to knocking. Naphtalene is a chemical solution that gives positive effect to rise the octane number. Octane number of gasoline can be measured by CFR engine. Using a motor Daihatsu CB-23, the best power obtained by using a grain of naphtalene (3,75 grams) for 3 litres of gasoline and ignition timing is 12° before TDC. Using this ratio, CO & CO2 that are produced in the exhaust gas is nearly the ame with pure gasoline usge but less HC and O2 are produced

Pemanfaatan Energi Gas Buang Motor Diesel Stasioner Untuk Pemanas Air

Exhaust gas from a diesel engine is having a big deal of energy. In a stationer diesel engine, the enthalpy of water will be increased by flowing the water in a spiral pipe which is located in the exhaust manifold of the engine. Using copper pipes in this heat exchanger, it's efficiency is found up to 69,5 %

Peningkatan Performance Motor Bensin 4 Tak 3 Silinder Yang Menggunakan Bahan Bakar Gas Dengan Penambahan Blower Dan Sistem Injeksi

Replacing from gasoline to gas fuel (BBG) for automotive, in fact, decreases the motorâs power. By adding some equipments such as blower (+ inverter) and BBG injection, the pressure and density of BBG and air mixture into combustion chamber will be higher. This can make the power of combustion engine be equal even bigger than using gasoline

Peningkatan Unjuk Kerja Motor Diesel Dengan Penambahan Pemanas Solar

The imperfect combustion process will be a problem in the development effort of diesel engine's performance. Nonhomogen air-fuel mixing process is one of the factors which cause the imperfect combustion. By heating up the diesel fuel up to a certain temperature before it goes through the high pressure injection pump will lower its density and viscosity. Therefore, when injected in the combustion chamber, it will formed smaller droplets of fuel spray which result in a more homogenious air-fuel mixture. Also by using higher temperature will make the diesel fuel easier to ignite in order to compensate the limited time which is available in high speed operating conditions. Diesel fuel heating can improve the combustion process to increase the power and decrease the fuel consumption optimally

Unjuk Kerja Pemanas Air Jenis Kolektor Surya Plat Datar Dengan Satu Dan Dua Kaca Penutup

Warm water is needed by humanbeing to take a bath, wash their clothes, their dishes etc. By the photothermal conversion, the solar energy can be used to heat the water. Flat solar collector is a tool which is used to capture energy of sun radiation then convert it into heat to heat up water in collector's pipe. The number of glass cover used effects the performance and efficiency of the collector. From this research, it is found that the efficiency of the collector is better when the cover used are two glasses than one glass. The temperature difference of incoming and outgoing water in the collector using 2 glasses 17oC higher than that of 1 glass

Pengaruh Suhu Dan Tekanan Udara Masuk Terhadap Kinerja Motor Diesel Tipe 4 Ja 1

One of the factor that influences optimation of performance of diesel engine is an imperfect combustion in the combustion chamber. To optimize performance of this engine it is necessary to do modification by increasing air temperature and air pressure into combustion chamber. A change of inlet air temperature in the combustion chamber will effect the air density, so will influence the amount of air in the combustion chamber. The increasing air pressure into the combustion chamber will help the mixture to reach its combustion condition faster. So that combustion deceleration, specially in the high rotation speed condition can be avoided. The result of the research showed that the optimal condition can be achieved at the temperature 50°C and the pressure 3 bars

Pengaruh Temperatur Air Pendingin Terhadap Konsumsi Bahan Bakar Motor Diesel Stasioner Di Sebuah Huller

A diesel engine that is used widely in a rice mill needs to be cooled by water that is circulated. One way to reduce the fuel used is to find the optimum cooling water entering the engine. A research is done in a rice mill in Lumajang. It is found that the optimum temperature to get the rice milled both for IR64 and IR70 is 65oC. The fuel is reduced as much as 13.6% for IR64 if the water enters the engine at 65oC compared to 40oC. Meanwhile, it is 14.3% for IR70. The temperature of the cooling water entering the engine is maintained at the optimum temperature by controlling the volume (or the height) of the water in the cooling pond, i.e. 220 liters for IR64 and 230.6 liters for IR70

Peningkatan Performance Dengan Pendingin Udara Masuk Pada Motor Diesel 4ja1

A combustion process could be complete or incomplete depends on how much air available in the combustion chamber. An intercooler used to cool the air entering a combustion chamber increase the mass flowrate of air. Doing so could increase the possibility of reaction between fuel & air. When the air is cooled to 15°C, the increase of output power using the intercoole is about 1,8 %

Pengaruh Temperatur Air Pendingin Terhadap Konsumsi Bahan Bakar Motor Diesel Stasioner Di Sebuah Huller

A diesel engine that is used widely in a rice mill needs to be cooled by water that is circulated. One way to reduce the fuel used is to find the optimum cooling water entering the engine. A research is done in a rice mill in Lumajang. It is found that the optimum temperature to get the rice milled both for IR64 and IR70 is 65oC. The fuel is reduced as much as 13.6% for IR64 if the water enters the engine at 65oC compared to 40oC. Meanwhile, it is 14.3% for IR70. The temperature of the cooling water entering the engine is maintained at the optimum temperature by controlling the volume (or the height) of the water in the cooling pond, i.e. 220 liters for IR64 and 230.6 liters for IR70

Peningkatan Unjuk Kerja Motor Bensin Empat Langkah Dengan Penggunaan Busi Dua Elektrode Dan Busi Tiga Elektrode

One of supporting components in the ignition system of Spark Ignition Engine is spark plug. Ignition occurs caused by the existence of electric source energy which generates activation energy to ignite the air fuel mixture until produces power. Spark plug is a component generating the spark highly effected the completeness process in combustion chamber. The completeness of combustion process shall affects the performance of the engine. By using double electrode spark plug and multi electrode spark plug can increase the performance on optimal condition, particularly increasing of the thermal efficiency each is 2.9% and 3.7%