what is the difference between a mechanically operated fuel pump and electrically operated fuel pump?
110892
A mechanical fuel pump uses the rotation of the engine (normally a lobe on the cam shaft) to power it, whereas an electrical fuel pump is powered by the vehicles battery.
893330
look at this:\n\nhttp://en.wikipedia.org/wiki/Gasoline
218028
propane is hotter. It gives off more heat than let's say a heat pump for a house. The offset in price from propane to electric is alot. Sorry I don't have numbers for you. I used to install furnaces and the lp gas or propane furnaces did much better at heating the house than the electric ones did. I won't even go into the water heaters.
347055
Yes, it pumps easier which makes the pump motor use less power, which saves $$$$... Plus, it doesn't tend to plug up instruments & valves like the thicker stuff does.
628147
You can do kerosene injection just like gasoline injection but with different fuel pumps for both applications.Secondly,the fuel economy will not be very good as an engine designed for gasoline runs best on gasoline because properties( chemical and thermal)of Gasoline and kerosene are different.Kerosene will have a different self ignition temp when compared to gasoline.You will be able to optimize the working of the engine by varying the compression ratio to suit the application
247686
Double-dude.  Maybe he's asking what a barrel pump is. I didn't know. "A small pump with an extended suction duct that is designed to pump fluid from barrels." -from the oilfield glossary. They seem to come in hand- and electric-powered versions, and all shapes and sizes. The ref. shows a picture.
158986
fuel pumps do turn and turn on as they are powered by motors.\nIf it works when you apply raw power, then the problem is in the control circuit. It could be the ignition or somewhere else. You did check the fuses? there is often two fuseboxes and occasionally external fuse links. It could also be a bad relay.\n\nYou will need a wiring diagram. The law has recently changed so that you can purchase the actual factory diagram somewhere, poke around.\nhttp://ahdol.com/\n\nI have usually, as in more often than not, found Haynes and Chilton's manual wiring to be incomplete, or worse, misinformed
926049
http://en.wikipedia.org/wiki/Electric_motors\nAre you talking hobby motors? There are many different types of electric motors: all of which "brake" or slow down differently.
263173
One runs on Petrol and the other on Diesel!!!!!!!
770868
For a ballpark comparision I would use 100% for electric and 80% for fueled fired heaters.\n\nMost of the power is converted to heat on the electric unit (resistance type heater)\n\nFor fuel fired heaters with combustion gases exhausted a lot of the heat is lost up the exhaust stack.\n\nA heat pump (eletrical) reverse refrigeration cycle actually generates more heat than the power it uses.\n\nGas heaters (non vented type) convert almost 100% to heat but because they require fresh combustion air will never be 100% efficient.
82156
gasoline is obtained from the fractional distillation of crude oil.  It is therefore a hydrocarbon.  It is evaporated and mixed with air and forced into the cylinder where it burns.  When the C--C and C--H bonds are broken, energy is required but then more eneryg (than is required to break these bonds) are given off on the formation of H--OH (water) and O--C--O (carbon dioxide)bonds.  This is the thermal energy that causes the burned gas in the cylinder to expand thus forcing the piston away from the spark-plug end, causing the engine to "run"
181259
A motor is electric and a motor runs on fuel, like gasoline or diesel.
1098142
I would ask the engine manufacturer. If they are not available for some reason, I would look at current manufacturers of similar engines and see if you could adapt something. If this is an engine that has been used in cars or trucks, look for one in a junkyard. \n\nIt would help if you said something about what kind of engine, pump, and service this is in. Is is industrial? Agricultural? Some kind of experiment?
790585
Leaded and unleaded gasoline, not oil. Before technology got around to major improvements in fuel and metallurgy lead was added to gasoline to coat the valves of an internal combustion engine to prevent pitting and lengthen the life of the engine or the duration between rebuilds. Lead usage in fuel was made illegal in the US because of the poisoness effects of breathing air with leaded emission fumes and of the cumulative effects of the leaded soot that collected near streets and highways. Now valves are made of harder, more durable metals and fuels burn cooler and have newer, less toxic additive to prevent pitting and "ping"
237788
There have been different systems in the past 30yrs. For a general concept check out the link below.\n\nDepending on what you are looking for: EFI electronic fuel injection, TBI throttle body injection, CBI central body injection, CPI central port injection or SCPI sequential central port injection or MFI multi-port fuel injection (which is most popular nowadays) you can get an idea of what it is at this link.\nFor a specific version based on the vehicle you own, try a Hanes service manual.
803196
Fuel Cell, device in which the energy of a chemical reaction is converted directly into electricity. Unlike a battery, a fuel cell does not run down; it operates as long as fuel and an oxidant are supplied continuously from outside the cell. Several companies are developing fuel cells that they hope will replace conventional internal-combustion engines in automobiles over the next few decades.\n\nA fuel cell consists of an anode, the positive end of an electric circuit, and a cathode, the negative end of an electric circuit, separated by an electrolyte. Electrolytes are substances that allow ions (particles formed when a neutral atom or molecule gains or loses one or more electrons) to pass through them. Fuel flows to the anode, and an oxidant flows to the cathode. The chemical reaction between the fuel and the oxidant produces an electric current. Various fuels may be used, but research and development in recent years has focused on hydrogen fuel cells.\n\nIn a hydrogen fuel cell, hydrogen is supplied to the fuel cell’s anode, and an oxidant, commonly the oxygen present in air, is supplied to the cathode. The fuel cell strips electrons from the hydrogen atoms. These electrons move from the anode through the electric circuit to the cathode, creating an electric current that can be tapped to provide power. The electron-deficient hydrogen atoms meanwhile pass through the electrolyte to the cathode. There the electrons that passed through the circuit recombine with the electron-deficient hydrogen atoms. Oxygen (from the air) reacts with this reformed hydrogen, producing water. Water produced at the cathode has to be removed continuously to avoid flooding the cell.\n\nHydrogen fuel cells hold great promise as low-pollution automobile engines if certain difficulties can be overcome. Water, the only waste product of a hydrogen-oxygen fuel cell, is nonpolluting and can be used to cool the engine. The oxygen the cells need is readily available in air. Hydrogen, however, is not so readily available, and there is no existing delivery system to convey hydrogen to all the places people would need it to power their cars. In addition, pure hydrogen is not abundant enough to provide power for all the cars on the road today. Instead, hydrogen would need to be extracted from other substances, a process that requires energy and produces pollutants.
1600
I work for a natural gas co. W.V.& would haveto say electric is the easiest to install & maintain. Natural gas then lp would be alot cheaper to heat with