Oksigenat Methyl Tertiary Buthyl Ether Sebagai Aditif Octane Booster Bahan Bakar Motor Bensin

Oxygenates Methyl Tertiary Buthyl Ether (MTBE), as an alternative substance for Tetra Ethyl Lead (TEL), which is used as substance to increase octane number gasoline fuel. However, need to be tested how its concentration influence about octane number, volatility fuel and engine performance. For engines with carburettor, the liquid fuel must be volatile enough to produce a combustible fuel vapour air mixture at intake temperature and to produce completely fuel vapour air mixture inside the cylinder before combustion

Sistem Injeksi Hidrogen Untuk Mengurangi Emisi Hidrokarbon

Motor vehicles are one of the source emissions of hidrocarbon to atmosphere because of incomplete combustion in combustion chamber, so there are more emissions hidrocarbon from exchaust pipe. One of the method can be used to reduce hidrocarbon emissions from exchaust manifold are injecting hidrogen after combustion process for burning hidrocarbon in exchaust pipe

Kolektor Surya Prismatik

Solar collector is the essential item of equipment which transforms solar radiation energy to some other useful energy form, for example as the water heater. One of the shape solar collector, is prismatic which have ability to receive solar radiation intensity from all the sun's position, so that using solar energy as water heater can more effective. Solar collector can absorb solar radiation intensity and convert it to useful calor for heating the water inside the pipes of the collector, so the temperature of the water is rise and natural convection is happen by the basic of thermosiphon because effect of mass density fluid difference. From the experiment is found the best position to locate the collector which can produce optimal efficiency are 15 degrre from east to north

Pengaturan Kondisi Idle Dan Akselerasi Pada Motor Berbahan Bakar Gas

Using fuel gas for gasoline engine can be made with additional equipment which is called Conversion Kit. However is still limited because there is a problem about the engine performance, that is too high idle rotation and low acceleration if compared to engine with gasoline. One at the cause of too high idle rotation is too a little fuel gas enter to intake manifold and specific gravity fuel gas (0,562 kg/m3) lower than gasoline, that cause the idle condition where the intake gas valve opened just a little, air that enter together with fuel gas cannot doing completely combustion. The way to improve this problem are by supply fuel gas with injection system control by electronic in idle and aceleration condition

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 Perubahan Pemajuan Waktu Penyalaan Terhadap Motor Dual Fuel (Bensin-bbg)

A Fuel gasoline engine can also use gas fuel beside gasoline. Nevertheless, if this gasoline angine uses gas fuel, the performance of the engine will decrease, because the engine is designed for gasoline as its fuel. This performance reduction is caused by the different characteristics of the two fuels. One way to improve the performance of a gasoline engine that used gas fuel by controlling the firring time with electronic controller to make the firring time more accurate

Analisa Turbocharger Pada Motor Bensin Daihatsu Tipe Cb-23

Turbocharger is one of component that used to improve performance of vehicle by increasing density of air. Turbocharger consists of turbin and compressor. Many people hope that their vehicle has better performance and faster acceleration by applaying some component. In this case turbocharger can do that. By applaying turbocharger, air and fuel will homogeneously mixed that can give a better combustion. Turbocharger has many advantages. Turbocharger powered by pressure of exhaust gas