What is the effect of compression ratio on efficiency of Otto cycle?

Thermal Efficiency for Otto Cycle A higher compression ratio permit the same combustion temperature to be reached with less fuel, while giving a longer expansion cycle.

This creates more mechanical power output and lowers the exhaust temperature.

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What is efficiency of Otto cycle?

It is defined as the ratio between work done during Otto cycle to the heat supplied during Otto cycle.Air-Standard Efficiency (thermal efficiency) of Otto cycle, From my previous article, If you have any ideas or suggestions about air-standard efficiency of Otto cycle, you can comment on this art...

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Which is more efficient Otto cycle and diesel cycle?

Otto cycle is more efficient.But it has no practical importance.In practice, the operating compression ratios of diesel engines are much higher compared to the SI engines working on an Otto cycle.The normal range of compression ratio for a diesel engine is 16 to 20 whereas for spark it is 6 to 10.

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How is Otto cycle efficiency calculated?

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What is Otto cycle and diesel cycle?

Otto cycle is used for petrol or spark ignition engine while diesel cycle is used for diesel or compression ignition engine.The main difference between Otto cycle and Diesel cycle is that in Otto cycle heat addition takes place at constant volume and in diesel cycle heat addition takes places at ...

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Which engine is more efficient in terms of compression ratio?

For a conventional gasoline engine, the higher the compression ratio, the more efficient the engine. US passenger cars have not had very high compression ratios for about 30 years for multiple reasons. During 1970-1972, Chrysler had the highest compression ratios in US production cars, requiring ...

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What is the difference between Otto cycle and diesel cycle?

Otto cycle is used for petrol or spark ignition engine while diesel cycle is used for diesel or compression ignition engine.The main difference between Otto cycle and Diesel cycle is that in Otto cycle heat addition takes place at constant volume and in diesel cycle heat addition takes places at ...

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Why does increasing compression ratio increase efficiency?

This is due to the increase in brake torque at high compression ratios.Increase in compression ratio induces greater turning effect on the cylinder crank.Greater combustion efficiency from increase in compression ratio means that the combustion of the fuel pays greater dividends by more energy re...

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Why you use cut-off ratio in diesel cycle not in Otto cycle?

We use cut-off ratio in diesel cycle and not in Otto cycle because it is cost effective.

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Does compression ratio effect octane requirements?

Yes, the higher the compression ratio, the more octane the fuel has to be. Anything over 10.0:1 has to be 91 or higher. However, if performance is not an issue, than you can use any type of fuel you want, but car will not accelerate fast and its torque curve will be very bad.Using low octane fuel...

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What are the advantages and disadvantages of Otto cycle?

advantages: when you turn on the windshield wipers you get a free ray gun.disadvantages: when you push the key in the ignition, it is actually a trigger for self destruction

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How does compression ratio affect engine efficiency and performance?

Engine efficiency is increased though compression ratio by allowing a more thermodynamic energy to be converted into mechanical energy. Energy transfer is the key to efficiency.

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What is gasoline powered otto cycle?

The otto cycle is the technical name for the 4 stroke engine.so a Gasoline or Petrol engine.

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What is the deffintion of compression ratio?

Compression is squeezing something so that it occupies a smaller space. Ratio is the proportion between two quantities or numerical values. Click the link for a detailed explanation. Explanation below!++++Therefore a Compression Ratio is the ratio between original and compressed volumes of, norma...

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What is the functional relationship between compression ratio and thermal efficiency?

Compression Ratio – Otto Engine In the following section, it will be shown that the compression ratio determines the thermal efficiency of used thermodynamic cycle of the combustion engine.In general, it is desired to have a high compression ratio, because it allows an engine to reach higher the...

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What is compression ratio of IC engine?

The compression ratio is the ratio of the volume of the cylinder and the combustion chamber when the piston is at the bottom, and the volume of the combustion chamber when the piston is at the top.Automotive engineers can improve fuel efficiency and fuel economy by designing engines with high com...

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What is the ideal compression ratio?

Compression ratios usually range from 8:1 to 10:1.A higher compression ratio -- say, from 12:1 to 14:1 -- means higher combustion efficiency.Higher compression ratios and combustion efficiency mean more power with less fuel, and fewer exhaust gases.

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What is the compression psi of a compression ratio of 16.2?

There is no direct connection between compression ratio and pressure. Ratio is a mathematical calculation of the cylinder volume from bottom center to top center. Actual cylinder pressure will depend on the volumetric efficiency of the engine. Factors the affect volumetric efficiency include rpm,...

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Compression ratio of diesel engine?

Usually between 16:1 and 22:1

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What is the compression ratio of a diesel engine?

The compression ratio of a Diesel ranges from 14:1 to as high as 25:1.I agree just depends on engine.

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What is the average compression ratio of a diesel engine?

Diesel engines are designed to operate at higher compression ratios, usually between 15 to 20, while petrol engines have lower compression ratios usually between 8 to 10.Since the higher the compression ratio of an engine the higher the thermal efficiency, so diesel engines generally have a bette...

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What is the compression ratio of and engine?

Compression ratio is the difference in the volume of a engine cylinder between when the cylinder is at it's largest volume, compared against when the cylinder is at it's smallest volume. Gasoline engines use 8:1 to 12:1 compression ratio. Diesel fuel engines use 14:1 to 25:1.

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What is the compression ratio for gasoline?

It would vary between gas engines and how they were built, but most would fall between 8 1/2 to 1 and 11 to 1 compression ratio.

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What is a compression ratio?

Compression Ratio is the ratio between the original volume and the compressed volumein combustion chamber.The compression ratio is denoted as CR. It is the measure of how much air-fuel mixture is compressed during the compression stroke in the case of the gasoline engine (in the case of the diese...

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What is compression ratio formula?

By definition, the compression ratio is the total swept volume of the cylinder with the piston at bottom dead center (BDC), divided by the total compressed volume with the piston at top dead center (TDC).

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What is engine compression ratio?

The compression ratio is the ratio of the volume of the cylinder and the combustion chamber when the piston is at the bottom, and the volume of the combustion chamber when the piston is at the top.Automotive engineers can improve fuel efficiency and fuel economy by designing engines with high com...

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What is my compression ratio?

By definition, the compression ratio is the total swept volume of the cylinder with the piston at bottom dead center (BDC), divided by the total compressed volume with the piston at top dead center (TDC).

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Is higher compression ratio better?

Automotive engineers can improve fuel efficiency and fuel economy by designing engines with high compression ratios.The higher the ratio, the more compressed the air in the cylinder is.It's the same thing with compression ratios.By keeping the explosion in a smaller space, more of its power can b...

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Compression ratio of the internal combustion engine is defined as?

The compression ratio of an internal-combustion engine, or an IC engine as it is more commonly called, is the ratio of the volume the highest capacity of the combustion chamber to its lowest capacity.In the IC engine, the piston makes a stroke, resulting in the compression of the air in the combu...

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Otto cycle using SI engine is write r wrong?

Otto cycle using SI engine is write r wrong Otto cycle using SI engine is write r wrong

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What is the effect of air fuel ratio on detonation in internal combustion engine?

A leaner fuel mixture burns hotter than a rich mixture. so a leaner mixture will be more prone to detonation than a richer mixture.

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Is lower compression ratio better?

If an engine has a high compression ratio, it means that a given volume of air and fuel in the cylinder is being squeezed into a much smaller space than an engine with a lower compression ratio.

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What is a good engine compression ratio?

Compression ratios are often between 14:1 and 23:1 for direct injection diesel engines, and between 18:1 and 23:1 for indirect injection diesel engines.Since diesel engines operate on the principle of compression ignition, a fuel which resists autoignition will cause late ignition, which can lead...

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What occurs in each combustion chamber during operation of a 4-stroke-cycle Otto engine.?

So what you have then is a description of Combustion Chamber status during each "stroke" portion of the 4-stroke-cycle (Otto) internal combustion engine:

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What is compression ratio for petrol engine?

Different engines - different ratios, but commonly around 8 to1.

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What is the typical compression ratio and combustion chamber pressure in a compression ignition engine?

Typical compression ratios between 18:1 and 23:1 are common, although in an effort to minimize oxides of N2 compressions as low as 16:1 are being employed generally resulting in a loss of 1-2 mpg resulting from the lower thermodynamic efficiency of the diesel cycle. Higher compression ratio yield...

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What is the formula for calculating compression ratio?

To calculate the ratio for your vehicle, you need to use the formula, compression ration = volume at below dead center divided by volume at top dead center.

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What's a good compression ratio?

Compression ratios usually range from 8:1 to 10:1.A higher compression ratio -- say, from 12:1 to 14:1 -- means higher combustion efficiency.Photo: Sébastien D'Amour.The benefits.Higher compression ratios and combustion efficiency mean more power with less fuel, and fewer exhaust gases.

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How do I change the compression ratio on my engine?

To decrease the compression ratio "remove material" from inside of the Cylinder head or piston top. This increases both the volumes by equal amount and hence the ratio gets decreased. Changing the piston head design.Changing the stroke length of the cylinder.Changing cylinder diameter.Chang...

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How do you lower the compression ratio of an engine?

There are several means by which the compression ratio of an engine might be reduced although all involve extensive mechanical rework to accomplish.1) Remove the heads from the motors and grind the compression chambers of the head(s) to make the area larger.2) Install replacement pistons that hav...

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What will be the effect of low compression on an engine?

Low Engine Compression will Cause a Misfire An engine with low compression in one cylinder will present itself by having a misfire and running rough while no compression in all cylinders will cause the engine not to start.There are many different low compression symptoms which will cause the eng...

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What is the maximum compression ratio to run on 93 octane?

12.4:1. this is your final or corrected compresssion ratio(FC). By that I mean adding in corrected altitudeFC- (altitude/1000)x.02your cam selection (see Keith black pistons calculators for dynamic and static compression)and if you are running a supercharger(boost / 14.7+1) x compression ratio= F...

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What is the compression ratio on a 1.4 corsa petrol engine?

For the Opal Corsa generation Corsa B, 1.4 i petrol engine, the compression ratio is 9.4. It has 60 horsepower and a 46 liter fuel tank. For the 1.4 XER, the compression ratio is 10.5. For the 1.4 i 16V ECOTEC, the compression is 10.5.

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If an engine has a compression ratio of 7.1?

Depends on the make of engine, but that sounds about normal .

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What is meant by the compression ratio of a combustion engine?

The compression ratio of a combustion engine is the relationship of the largest and smallest capacities of the combustion chamber. A higher compression ratio is advantageous because the engine operates more efficiently, extracting more mechanical energy from the fuel. Most gasoline-powered engine...

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What happens when you increase compression ratio?

As the compression ratio increases, the fuel mixture is sufficiently compressed thereby increasing the thermal efficiency, so that less fuel is required to produce the same amount of energy.Fuel consumption is reduced at higher compression ratios between 8 and 9.

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What unit is a compression ratio measured in?

There is no "unit". It is a ratio. Just pick a unit. Since you're likely talking about engine displacement, liters are a good unit to use.+++Engines are described in litres, but individual cylinder volumes are normally expressed in cubic centimetres (c.c.), but the compression-ratio is the same i...

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What happens if compression ratio is too high?

At that high compression ratio gasoline will self ignite during the compression stroke itself before the piston head reaches the top dead centre, this is a phenomenon of erratic combustion which brings a lot of damage to piston head and also the combustion chamber, temperature and pressure inside...

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What do you think of the effectiveness and efficiency of the ERP system in Singapore?

i dont know but my step dad live there

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Is the compression ratio of a piston inside its cylinder measured mechanically or atmospherically?

Mechanically To put it as simply as possible. The cubic inches of a cylinder and the amount of space your compressing it into is the compression ratio.

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Why is the compression ratio of a spark ignition engine limited to about 9.51?

So the engine can run on regular 87 octane gasoline.

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Is a higher or lower compression ratio better?

Automotive engineers can improve fuel efficiency and fuel economy by designing engines with high compression ratios.The higher the ratio, the more compressed the air in the cylinder is.It's the same thing with compression ratios.By keeping the explosion in a smaller space, more of its power can b...

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What compression ratio do you start to run race fuel?

Right around 12:1 could be higher. Could go up to 14:1.

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What is the correct octane rating for 10 to 1 compression ratios Is there a chart?

Depends on timing of the engine, whether the engine has aluminum or cast iron heads (aluminum dissipates heat faster, therefore allowing a lower octane), the design of the cams, and a host of other things. So no, no chart. Rule of thumb: 10:1 use 91-93 octane gas.

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What is the correct octane rating for 9.8 to 1 compression ratio?

It really depends on the motor, heads(iron/aluminum), cam. For example an older iron head 350 with a small cam with 9.8:1CR will need 93 maybe even octane booster. While a small bore aluminum head engine could run 89 maybe even 87 depending on cam size.

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What does compression ratio mean in car motors?

In an internal combustion engine, there are cylinders that have pistons in them. When the piston is down you have an open cylinder that has a specific size of volume that it will hold. When the piston moves back up to as high as it can, it compresses all that space into the new space and that is ...

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How can you increase the compression ratio of an internal combustion engine?

Compression ratio (CR) is the total volume of a cylinder at BDC (bottom dead center) divided by total volume of space at TDC (top dead center).To increase CR, you must either increase the total volume of displacement, or decrease the volume at TDC. This can be achieved by shaving the heads, incre...

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How do you increase the compression ratio of a 1996 Chevy caprice 9c1 police package car?

Change the pistons, or change the cylinder heads, or mill down the cylinder heads.

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What is the effect of dilution on viscosity of oil?

dilution will reduce the viscosity The effect of dilution on viscosity of oil is that it will decrease.

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Auto Technician A says the total volume of all the cylinders in an engine is called the compression ratio?

The volume of an engine is called displacement and is typically measured in cubic inches or liters. An eight cylinder engine that could hold 1/2 liter of water (or air) in each cylinder would be a four liter engine. As the pistons move to the top of the cylinder in an exhaust stroke, they theoret...

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What is the application of dual cycle?

in practical we don't use dualcycle...........

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What is the effect of ethanol blended petrol on carburettors?

To avoid operational issues, vehicles should be maintained in accordance with manufacturer's servicing procedures using genuine replacement parts. This will ensure that the fuel systems of vehicles continue to operate as designed on ethanol blend fuels..

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What is the air pressure inside the top of a normally aspirated engine cylinder with an 11.5 compression ratio when the piston therein is in the power stroke and at full compression.?

Assuming an atmospheric pressure of 14.7 psia and a specific heat ratio of the air at 1.3 then the required pressure is: P = Patmp X rck= i4.7psia X 11.5 1.3= 351.74psia

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What do you mean by working more effectively or efficiently?

getting more dune or getting it dune cheaper

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What is the total displacement in cubic inches of a v6 engine when the compression ratio is 3-3 and 1 half Does it equal 173 cubic inches?

The compression ratio doesn't deal with the displacement, the bore and stroke do. If it's a modern engine it should say the size of the engine in liters. You can use this to convert the engine size to cubic inches. A 173ci engine is a 2.8L engine when converted.

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What is the purpose of compression rings?

To prevent fuel, air and combustion gases from escaping.Short and simple.

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What is the name of the two stroke engine cycle?

I think you are looking for a detailed engineering answer.Common usage is that a two stroke engines is called a two stroke engine.By the way my experience says that two stroke engines only have two strokes and the second one is fatal.

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What is the efficiency of screw jack?

Type your answer here... (1+sin$)/(1-sin$)

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What is the definition of combustion efficiency?

The ratio of optimum energy derived from the minimum use of fuel energy during combustion.

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What is The Effect of carbon residue?

Carbon buildup-On the intake valve, will reduce power and effect the air/fuel ratio. The carbon block air flow and absorbs fuel from the intake charge. I had a 760li in my bay, come in running rough and the engine light on that was caused by carbon on the valves from not being driven only 5mile t...

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What are the effects of exhaust fumes on the environment?

Automotive exausr (transportation fuel emissions) is a significant contributor to environmental problems.The emissions from auomobile exhast contain:

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You did a compression test and have 195lbs what is the compression of the pistions?

There is no possible way to answer that question based on just PSI.Try googling compression ratio calculator. Once opening the first result you will need to enter your engine specifications to find out the answer. You will need to know the bore, stroke, gasket thickness, size of the combustion ch...

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What is the difference between 2 cycle and 4 cycle?

The way this process is repeated varies between these engine types.A 2 cycle engine completes a combustion and exhaust cycle in only 2 strokes of the piston, with a 4 cycle taking 4 strokes of the piston.

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What are the other kinds of cycles?

Mountain, BMX, Road, Tri, Trials , Time TrialsUni,Tri.There are more.

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What is replacement cycle of car wheels?

you only replace them if they are damaged or rusted out

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What is the side effect of Viagra?

Common side effects of Viagra include nausea, facial flushing and hot flushes.Some men also complain of indigestion, nasal congestion and dizziness after taking their tablet.

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Why compression ratio is greater than 1 in i c engine?

because a 1 to 1 comp ratio would not generateenough power to keep the engine to idle,the higher your ratio the more of a powerful stroke you will have. more power is good.a i c fuel engine will be between 9;1 to 11;1 race motors on hi octane around 14;1

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What is the effect of combustion?

Combustion takes carbohydrates, and mixes them with Oxygen; and then Carbon dioxide and Water and Energy are produced. Breathe into your hand and feel the Water.

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What is the negative effect of car?

You'll get fat from driving instead of walking places. They cost money to buy and upkeep.

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What is the main working cycle of a v8 engine?

it consist of 8 piston in v shape that are attach to the crankshaft and the rest of the process is same compare to the other engine

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What is the significance of fuel air cycle?

Fuel-Air cycle is defined as the theoretical cyclethat is based on the actual properties of the cylinder gases.The Fuel-Air cycle takes into account the following: 1.The actualcomposition of the cylinder gases (air + fuel + water vapor + residual gases).

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What is the calculation of the gear ratio?

Calculating the gear ratio for a car entails a lot of information. How high do you want the car engine to rev(turn-RPM) at 60 MPH? How much horsepower is the engine making and how much can be developed at the rear wheels?(I am assuming you're are referring to a rear wheel drive vehicle). How Much...

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What are the effects of flood on agriculture?

This may happen at the time of cyclonic storms or by tsunami waves.Sea floods caused by tsunami can be particularly sudden and violent.In general, storms cause damage to agriculture, people and property.Floods damage standing agricultural crops and may also carry away the top soil making the land...

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What are the effects of floods on buildings?

The location of your fridge freezer liebherr depends on the model of your refrigerator. You can try looking in your manual or online for results or consult a professional.Floods make an enormous impact on the environment and society. Floods destroy drainage systems in cities, causing raw sewage t...

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What are the effect of geography and climate on farming?

Geography and climate determine what you can grow on a piece of land.Hope this helped.;)no u retard, this doesnt help! everyone knows that the climate and geography hase to just right to grow something!FYI but just do ur best to answer this i only need one answer for this and ii dont know

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What are the positive effects of floods on natural ecosystems?

Returning Nutrients to Soil Floods distribute and deposit river sediments over large areas of land.These river sediments replenish nutrients in topsoil and make agricultural lands more fertile.

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What are effects of combustion on environment?

there are lots of answers of it and u dont need to know xx

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What is the best ratio of torque and power?

there isn't a best ratio of torque and power. You must find the ratio for your application because it depends if you are going to use this as a 1/4 mile car(low torque, high bhp) or a hill climb car(high torque.low bhp).My opinion: more power of either type is better!

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What is the ratio of 2 stroke petrol?

You'll need STIHL 2 Stroke oil, an empty and clean fuel can & fresh unleaded fuel from a reputable petrol station.Mix at 50:1 (20mls oil per 1 litre fuel) when you're using STIHL 2-Stroke oil.

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What is the ratio of two stroke oil to petrol?

Mixing ratios Petrol quantitySTIHL two-stroke oil 1:50LitresLitrescm³10.02(20)50.10(100)100.20(200)3 more rows

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What are the effects of temperature on a car engine?

Extreme heat in engines causes oil to break down, or burn, impeding there ability to protect metal against wear. Under normal circumstances, there is a thin layer of oil that prevents metal to metal contact. When the oil is burnt off temperatures skyrocket. the lead bearings in the motor melt fro...

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What are the effects of speeding on public highways?

You get a ticket, a fine, and might lose your license, or your life....Also, other drivers will be expecting you to driving at, under, or perhaps slightly over the limit, and will base their actions on this assumption.So if you are doing 110Mph in a 30 zone it will not be long before someone pull...

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What is the equivalent of a marathon for cycling?

According to Mike Joyner of the Mayo Clinic, 8mph in running & 20mph in cycling are the oxygen equivalent of each other.A 3:16 marathon (26.2 miles at 8mph) would be the equivalent to a 65.5mph bike (20mph for 3 hours & 16 minuts).

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What is a ratio of 2 1?

A ratio is a comparison between two (or more) different quantities of the same unit.For example if the numbers of boys and girls at a hockey match are in the ratio 2:1 , we know the following information: There are more boys than girls.There are 2 boys for every girl.

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What is the price to income ratio on a car?

That would depend on how much money you make and how much the car costs.The formula is: price paid for vehicle/ income.A related question, and one possibly giving the answer desired is "what is the typical range of car price to annual income ratios".1:2.5 is pretty average, with 1:1 and 1:6.1 the...

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What is the compression on a 1995 wildcat 700 engine?

120 P.S.I. is acceptable low, 130 is good 135 is factory startup/breakin period required.

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What is the gear ratio on a 1996 GMC 1500?

You would need to look at the RPO codes on the sticker in the glove compartment. If it's a 4x4, you most likely have either 3.73 (GT4) or 4.10 (GT5) ratios. 3.08 (GU4), 3.42 (GU6), and 3.55 (GV0) are also seen sometimes. The best way to know for sure is to call the service department of a GMC dea...

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What is one of the most fuel efficient SUVs on the market?

The cost of fuel varies considerably in different places; in some places it can dirt cheap, in others, as expensive as gold. Fuel is an interesting thing to consider when thinking of fuel-efficient SUVs- the most fuel efficient SUV is the Toyota Highlander Hybrid Limited.

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Is TDC on the compression stroke?

Simply put, Top Dead Center (TDC) is the position of an engine's piston when it is at the very top of its stroke.Depending on weather you need to be on the compression stroke or not there are many methods that you can use: Compression tester.

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What are the disadvantages of cycling?

One of the major disadvantages of bicycles, is the attitude of motorists to bike riders, do they leave enough room when passing a bike.Bikes are slow, but you can move through traffic easier.Weather conditions cause another set of problems, as well as riding at night is more dangerous for bicycle...

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What is the ratio of regular cars to cop cars?

I dont exactly mean by your question but most cops have the car Crown Victoria made by Ford. But after you are in the police force for over 2 year you car have the offer to buy you own car and they will put lights on it and other stuff to it so it would be a cop car.I think i might have answer yo...

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