Its actually quite small! Those tiny glow plug enginesused on flying model airplanes are actually diesel engines (although they are fueled with glow fuel a mixture of nitromethane, methanol, and castor oil; not the petroleum derived diesel fuel used in full size trucks and cars). The smallest I find is 0.049 cubic inch (0.803 cc) displacement. However I'm sure smaller ones can be made.
the reactivity series lists elements in order from most reactive to least reactive. in a displacement reaction, a more reactive element will "displace" a less reactive element in a compound, the reactivity series can therefore be used to determine which displacement reactions are possible.
All submarines have at least 2 methods of propulsion; with nuclear power, steam generated moves the turbines/main engines, and also makes electricity for battery storage in case of main propulsion failure (electric motor propulsion). A backup Diesel-Generator is also aboard for making electricity if the reactor is down. Diesel-Electric boats run on electric motors (battery powered) submerged, and on their diesel engines while surfaced.
No, at least not any piston engines. Diesels and gasoline/petrol engines use very different compression ratios, and you really wouldn't be able to use the same engine for those different kinds of fuels. Yes, there were some early farm tractors (1940's-1950's) that started on gasoline and them switched to diesel when the engine was warmed up. They had carburetors, distributors and spark plugs along with diesel fuel injectors.
The Boeing 747 has at least 4 engines.
The Boeing 777 has at least 2 engines.
The engine swap could be possible, depending on the type of engines. Both the 1991 and 1994 engines will have to be the same size, or at least have the same mounting pattern.
Power ourtput and engine displacement are not directly related. While it is true that larger displacements usually allow for greater power output, the efficiency of the design, in terms of horsepower per cc, can vary widely. For example, a well designed motorcycle engine gets at least 100 hp out of less than a liter of displacement, while most subcompact car engines make about 90 hp with 2 liter engines. But it should be remembered that the car is at least 5 times heavier than the motorcycle, so it's engine is built to be a lot more durable.
Power ourtput and engine displacement are not directly related. While it is true that larger displacements usually allow for greater power output, the efficiency of the design, in terms of horsepower per cc, can vary widely. For example, a well designed motorcycle engine gets at least 100 hp out of less than a liter of displacement, while most subcompact car engines make about 90 hp with 2 liter engines. But it should be remembered that the car is at least 5 times heavier than the motorcycle, so it's engine is built to be a lot more durable.
Models with a D in there name are diesel. At least in the USA. The 560SEL is not.
bio-diesel
Yes, diesel does spoil. The storage life of diesel is at least one year provided that it has been stored at a temperature of 20 degrees Celsius or lower.
It depends on what fuel it is designed for. Equipment that is made for gasoline will definitely run on gasohol (90% gas, 10% alcohol) and may also run on E-85 (85% alcohol, 15% gasoline). Most diesel engines will run on at least B-5 (5% bio diesel, 95% diesel) and may run safely on B-100 (100% biodiesel). Diesel engines can also be converted to run on vegetable oil. Butanol and biodiesel are recognized alternative fuels currently used in farming. Wind farming is a consideration depending on location and the following website, AlternativeFuelsGuide.info, may have exactly what you require