There are two types of gasoline engines: two stroke and four stroke. My favorite is the two-stroke because the amount of power it makes compared to the four-stroke engine. They are also better because they are lighter and have that awesome power band. The biggest differences in these two types of engines are the way they get the air/fuel mixture and when the spark ... . Four stroke engines get the fuel and air by opening up valves by the means of a camshaft, cam chain and other valve train parts. These engines ... cannot escape back out. The reason why two strokes are so much more powerful is...

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... when that occurs the piston heads towards the bottom of the cylinder and then starts to rise to the top. The third stroke is the power stroke and as the piston rises to the top it goes to the highest possible point in the cylinder and when it is at that point the gas and air mixture ... the spark plug administers a spark which then ignites the gas and air mixture and forces the engine down in the cylinder and turns the cranks shaft. The fourth stroke is the exhaust stroke then as the piston rises to the top of the cylinder the exhaust valve open and the exploded are released into the a...

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... daily routine. In an internal combustion engine, combustion takes place in a confined space, and produces expanding gasses that are directly used to generate power (Internal Combustion Engine). These engines are classified as reciprocating or rotary engines. In a reciprocating engine, the most common of the two, ... goes back three hundred and twenty years. A Dutch physicist named Christian Huygens unproductively experimented with the idea of using gunpowder for providing motive power. Eight years later, Papin, a British scientist, described this gunpowder engine to the Royal Society of ...

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... an engine that was to make the mass production and common use of the motorcycles possible" (Thorpe 2). The engine was small, light and a four-stroke. It had a battery and coil ignition instead of a hot tube. A lubrication system was invented to drip oil in metered doses. Soon the engine was ... do not have valves, which simplifies their construction and lowers their weight. This makes the two-stroke engine lighter, simpler and less expensive to manufacture and repair. The piston, cylinder, and crankcase serve dual roles in developing power" ("Motorcycle Mechanics" 74). The engine is made...

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... boomed. Four strokes are the alternative to a two stroke. Four strokes make the combustion process 4 steps instead of two. First, fuel is drawn in, just like a two stroke. As the piston moves up, it compresses the fuel. At this point, the engines show their differences. The four stroke will combust the mixture, making the power stroke, then the piston will come back up, making the ... gases travel outward. The two stroke just pushes the gases out and comes back for more. The ... four stroke has two rotations of the crank for every 1 power stoke. Four strokes have a sump oil system, whi...

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... because if one of the four stages are left out, combustion will be unsuccessful. The first of the four strokes is the intake stroke. This occurs whenever the piston draws fresh air into the combustion area from the open valves. As the crankshaft turns the connecting rod ... explosion. The force pushes the piston to the bottom of the stroke, spinning the crankshaft very quickly, and the power is made to propel the vehicle. The piston then begins is journey to the peak of its next stroke, forcing out all of the exhaust fumes created by the explosion. ... of a vehicle's engine is just as i...

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... It was also a very big seller and was easy to maintain. In 1934 BMW took to work on their new 845cc four-cylinder engine. It had a 80mm stroke and a 58mm bore. This gave it 22BHP and a 50mile per gallon (MPG) fuel usage. BMW abandoned the four cylinder concept till the early 1960's when ... put more metal between cylinders and had wider main bearings than the early four cylinders. In April 1934 BMW announced the creation of a long stroke six cylinder. They had a power output of 34BHP. This same motor was made into a triple carbureted version that gave it 40BHP. In 1935 Germany removed the...

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... certain state in response to a stimulus). It can all be shown in the diagram below of the Otto cycle.  (1-2) Isentropic compression (Compression Stroke)  (2-3) Constant volume, reversible heat addition (Ignition)  (3-4) Isentropic expansion (Power Stroke)  (4-1) Reversible, constant volume heat rejection (Exhaust) You will see that a mixture of fuel and air are pulled into a cylinder during the ... intake stroke. The pressure and temperature are then raised during the compression stroke while the volume decreases, staying true to the Combined Gas Law. Near maximum ... tempe...

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... : In the last decade, there has been rapid deterioration in air quality especially in the urban areas of the Philippines including Metro Manila. Air pollution is caused by industries, power plants and by our land transportation. One popular transportation here in the Philippines is the tricycle. Not only because it is very cheap also it is almost in every secondary ... street. There is almost a million tricycle franchises all over the country and 120,00 of it is in Metro Manila. These tricycles are either 2-stroke or 4-stroke engines but most are 2-stroke. The large and increasing number ...

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... block, heads, and intake are all aluminum, which is great for heat dissipation and weight savings. This engine is also built on the great bore and stroke combination of about 350 cubic inches, the LS-1 is actually 347 cubic inches because Chevy decided to decrease the bore size a little bit. This was so ... they could increase their stroke just a little bit due to economic purposes. This engine is Chevy's most advanced small block ever and they produced this engine for their performance cars on ... half consists of 75% of the moving parts in an engine. This is where the power for any e...

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... shaped its future into many everyday devices. Before the Internal combustion engine, it took many people and ideas to lead up to it. First was the Steam engine, invented to power early vehicles including the first true automobile by Nicolas Joseph Cugnot of France in 1769. In 1807 the first internal combustion engine was invented and powered by oxygen and hydrogen ... American invented the very unsuccessful kerosene powered engine in 1873. Six years later, Nikolaus August Otto invented and later patented a successful four-stroke engine, known as theOtto cycle?. Later in 1883, Edouard De...

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... next focal point to consider when one is deciding whether to buy a dirt bike or a street bike, is engine type. The dirt bike comes with a two-stroke engine. The two-stroke engine takes a mix of oil and gas and ignites it in the cylinder, providing the power and lubrication all in one motion. On the other hand, the street bike comes with a four ... stroke engine; this is similar to a car engine, but much smaller. In this type of engine, only the gas is burned, and the oil is reused again and again. These are ... ...

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... combustion, if there are any other alternatives to it? There is a little known engine called the Wankel rotary engine. This engine is very unlike the regular 4-stroke internal combustion engine used in most cars; it uses no pistons. "Felix Wankel conceived the idea of a rotary engine in 1924" (Marr) which re received a patent for in 1936. Since ... rotor. As the rotor is pushed by combustion around the inside of the housing, it in turn, spins the lobes and the shaft. Producing power for the rotary engine is accomplished in four strokes, like conventional four stroke piston engines, but...

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... combustion, if there are any other alternatives to it? There is a little known engine called the Wankel rotary engine. This engine is very unlike the regular 4-stroke internal combustion engine used in most cars; it uses no pistons. "Felix Wankel conceived the idea of a rotary engine in 1924" (Marr) which re received a patent for in 1936. Since ... rotor. As the rotor is pushed by combustion around the inside of the housing, it in turn, spins the lobes and the shaft. Producing power for the rotary engine is accomplished in four strokes, like conventional four stroke piston engines, but...

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... travel (bottom dead center) the correct amount of gas and air has been drawn in. At this point the valve closes and it is now ready for compression. The compression stroke is when the piston goes from bottom dead center and moves up to compress the air and gas mixture. This causes the mixture to become more flammable and thus give ... think this is not an explosion, this is rather a very hot and very powerful burn. This burn causes the gas to expand forcing to piston down. When this happens the power from the burn transfers to the crank shaft which is connected to the transmission, thus...

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... American cars have been working on fuel efficiency cars in the past years they cannot beat the advancements in the foreign engines. Foreign cars provide power that every car needs and better gas mileage. The most fuel efficient American car is the 2011 Ford Fusion which gets 41 miles per gallon ... Having an American car is a totally different experience on the other hand. They only have benefits in certain situations. American cars are known for the power that they have this is why they are mostly used for utility work. On construction sites, you will only see American trucks, constructi...

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... are, in many ways, better then piston engines, but their use is somewhat limited. Most rotary engines use only two rotors to generate power, which allows them to be smaller engines with less moving parts; lasting longer and remaining more efficient. Rotary engines are also very inexpensive ... the rotary engine can withstand driving under higher load and at higher RPM's thus having high top speed, and incredible horse power as well as overall power in the higher rpm's. Rotary engines are cost efficient to make and have tremendously more horsepower for far little displacement as compared ....

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Hybrids are a hot subject today and they are beginning to show up across the United States. Any vehicle is a hybrid when it combines two or more sources of power. Hybrid cars run off a rechargeable battery and gasoline. Because batteries can supply only enough energy for short trips, an onboard generator, powered by a gasoline engine, must be present for longer ... and parallel hybrid operating strategies for their potential to meet program goals. The parallel vehicle used a four-stroke direct injection engine and an electric motor/energy storage combination. The series vehicle used a heat e...

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... addition, vehicle manufacturers started to produce vehicles with parts that made less exhaust emissions. Carburetors, fuel injector, catalytic converters, oxygen sensors, power control module (PCM), and evaporative emissions system (EVAP) are some parts used in automobiles that help to lower the ... from the air and fuel mixture. In order to create this pressure, the engine only requires 10 milligrams of gasoline per one combustion stroke. A car uses a fuel mixture of 12:1 ratio of air and fuel under normal operations (Halderman Automotive 195). Sometimes the fuel ... most promising fuel...

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... diesel, hydrogen, methane, or propane. From a technological perspective, gasoline-powered internal combustion engines have limitations in terms of performance and fuel-efficiency. Eventually they will have to be replaced by power systems that do not rely on internal combustion technology. A major problem with fuel efficiency is the technology in today's engines is nearly a century old. In a rather primitive sequence of events ... , a mixture of gasoline and air is sprayed into a cylinder. This is compressed by a piston and at an optimal point in the compression stroke; a spark plug creat...

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... the rotor moves around the chamber each of the three volumes alternately expands and contracts. The expansion and contraction draws air and fuel into the engine, compresses it and makes power as the gasses expand and then expels the exhaust. The rotary engine is an internal combustion engine, like the engine in a car, but it works in a completely different way then ... one happens in its own part of the housing. A few advantages of the rotary engine are that is is light weight and compact. It is smooth, and has and extended power stroke. There are also few moving parts, no valves, conne...

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... only engine used on aircraft until the late 1940's when the jet engine proved to be superior in all aspects. The four stroke piston engine is the type of engine normally found in a car but types of piston engines also power boats and planes. The four "strokes" are INDUCTION, COMPRESSION, COMBUSTION, EXHAUST (or suck, squeeze, pop, blow). The combustion chamber consists of ... it going a maximum of mach 5. A hypersonic plane with these kind of engine will use a turbojet which takes the craft to mach 1, then the engine turns into a ramjet (which provides more power, and reduces the need t...

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... do not uses an air pump at all; pulse air systems, or aspirated systems that use exhaust stream "pulse" that vacillate depending on whether the engine is in the power or exhaust stroke. The pulse air injection system uses the "draw" to pull the fresh air through the check valve an into the exhaust stream. Diverter assembly one side effect of pumping ... ...

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