Why petrol has low flash point and high auto ignition point than diesel?
the higher self ignition temperature of the petrol is due to the low density than the diesel.
density = pressure / (R* temperature)
R= universal gas constant.
ex. hydrogen (gas) has density = .082 at 300 k
while kerosene has =810
(both are in kg/m^3)
and auto ignition temperatures are
similarly , petrol-density=737
diesel has=820 to 950 .
because high higher compression ratios used in the diesel engines their thermal efficiency is higher than the petrol engines and therefore their running cost is lower.
Diesel is a more combustible fuel than petrol, therefore less fuel is required to generate the same power as petrol. This also means that spark plugs aren't required, like in a petrol engine, since the diesel will ignite off engine compression alone. This also makes the engine arguably more reliable since there are less parts, and less things to go wrong.
The diesel engin does more of heavy work than the patrol engIn .
Diesel has highest ignition temperature.. So only diesel cant be used in petrol engine
They are not But The Diesel engines tend to be heavier for a given horse power level Horse power = speed Right! Most Diesel engines are built to move heavy cargo. Building engines for this purpose runing on gasoline would take a higuer cost.
Most likely because they would be able to pull more and have more torque. This makes is so that is needs a bigger engine so that there is more power to pull the object a certain distance.
because diesel engine has the maximum efficiency than petrol engine. also diesel engine can handle more load than petrol,as we can see in case in case of heavy vehicles. --- Fuel Savings result because the Air to Fuel ratio is MUCH more "lean" (more air) in a Diesel than in a gasoline/petrol engine. At idle, the optimal mixture for gasoline is 14.7 parts of AIR to one part FUEL. Compare that to a Diesel engine… Read More
ash in diesel fuel causes soot, much more in diesel fuel than gasoline
There not, or might not be! Factors, SIZE, WEIGHT TO HP, COMPRESSION IGNITION, SAFETY, COMBUSTION TEMP., THERMAL ENERGY RELEASE RATE.
Diesel engines are more efficient and do use less fuel, but they do not cost less than a petrol engine, they cost more. Diesel fuel also costs more. A diesel engine will however last longer.
Diesel engines come in all sizes. Some smaller and some quite larger than gasoline engines. A diesel engine makes no more H.P. than a gasoline engine but makes lots more torque and it's H.P. at low RPMs. Diesels typically have a compression ratio of around from 16 to 1 to as high as 23 to 1. Most gasoline engine will have around a 9 to 1 ratio. The higher compression ratio of a diesel allows… Read More
if you're talking about the exhaust, it's because diesel engines are normally bigger which means they need bigger exhaust pipes to let all the carbon dioxide/monoxide out, which let's more sound exit. big 18 wheeler's engines range from 10 to 12 liter straight 12 diesel engines. where a normal sized car either has around a 2.4 liter 4 cylinder, or around 3.5 liter V6 engines. both very small compared the hauler trucks. Diesels are noisier… Read More
In the two stroke petrol engine as you know suction,compression,ignition,expansion and exhaust is completed in only two stroke and one revolution of crank wheel more over diesel ignites at very high pressure which is not the same in case of petrol........if petrol is also ignited under pressure it explodes producing a big thumping sound.called KNOCKINGthis may reduce the power output and also lead to breakdown of the engine. For the above reason two stroke engine… Read More
A petrol engine revs higher, which allows it to burn more fuel and output more power.
A diesel engine is a compression-ignition engine, whereas the petrol engine uses spark ignition. The injected diesel fuel spray will ignite in the highly compressed air inside the combustion chamber. This is due to the very high temperatures obtained as a result of the high compression ratios. The timing of the injection is important to maximise the combustion process. In petrol engines the compression ratios are kept much lower to curb the possibility of detonation… Read More
its nothing but a psychological trick which makes it seem much cheaper that it really is
In the United States diesel is not cheaper than petrol or gasoline, it is higher.
Petrol has a boiling point of 38-204 degrees Centigrade, while diesel has a boiling point of >150 degrees centigrade.
These data depends strongly on the chemical composition. For gasoline: the freezing point is from -40 0C to -60 0C For Diesel fuel: the freezing point is from -6 0C to -20 0C
Petrol in a Diesel will cause serious engine damage if you run the engine. Diesel in a petrol engine and the engine will simply not run. No damage will be done.
The diesel will develop more torque or pulling power, will get better fuel mileage, and will last much longer.
Your question assumes this is true but it is not. Both fuels have their uses. Diesel engines are far superior to petrol engines when they are needed to haul or pull a heavy load. They also last longer and are more durable. Petrol engines are cheaper to build and the fuel cost less per gallon. They also have other advantages and disadvantages to a diesel engine. Neither is better they are just different and each… Read More
A gasoline engine will not run on diesel and a diesel engine will be destroyed if you run it on gasoline. Click the link.
Two main differences: The fuel intake system is different and the firing mechanism is different. First, Petrol engines fire using spark plugs instead of heat and compression, and they might not get the diesel fuel to ignite fully if the compression is too low. Second, Diesel fuel has different viscosity, different volatility, different cleanliness standards, and different air/fuel ratios, so the fuel injection system has to have different design features.
Please don't do that. It will blow the head right off of your engine. This is because gasoline is more explosive then diesel.For example, if you have a gallon of gas, and you explode it, the resulting explosive gas generated would be larger than if you managed to explode a gallon of diesel. So your diesel pump would dump so much gasoline into the cylinder, that when it burned, it would destroy your engine. Also… Read More
CNG Is better than Petrol because it has very low moisture content, it's cheap and easy to transport.In spite of these circumstances the number of vehicles in the world that use CNG has grown steadily at a 30 percent annual rate.Some useful Pros. are § Due to the absence of any lead or benzene content in CNG, the lead fouling of spark plugs is eliminated.§ CNG-powered vehicles have lower maintenance costs when compared with other… Read More
Diesel fuel is used in diesel engines as a partial lubricant. It also has a high flash point due the fact that diesel engines ignite the fuel by compression rather than spark. A gasoline engine on the other hand fires the fuel by spark and the fuel has a lower flash point. Gasoline has no lubricating qualities whatsoever. Diesel engines are designed to run on diesel fuel and the use of gasoline in a diesel… Read More
Diesel and petrol engines work differently. Diesel engines use compression to ignite the air/fuel mixture, and have a much higher compression ratio than petrol engines, which use spark ignition. The conditions for ignition are not met when petrol is put into a diesel engine, and will stall.
Both of these are internal combustion engines, which means the fuel burns inside the cylinders. A cylinder is an enclosed space with a movable lid called a piston. Fuel and air are drawn into the cylinder. A spark causes the mixture to ignite in a petrol engine, whereas in a diesel engine compressed hot air is used. The hot gases produced push the piston outwards (which movement eventually turns the wheels). The waste gases are… Read More
Petrol engines use lower pressure and a correctly timed spark to ignite the fuel. Diesel uses high pressure to ignite. Diesel also uses a glow plug to start the com ustion process.
The engine compresses the diesel fuel to the point of where the fuel combusts.Think of it like the big bang on a smaller scale; it compresses to the point of explosion.
We know that diesel is obtained from petrol. It is the fractionating column in which diesel is formed. Let's take an example of milk, if milk is at a cost of 40 which is produced by a Dairy then they take some for preparing ghee,yogurt,butter,etc. then the left milk will be left so it is more expensive than petrol.Taxes also play a huge role.
Diesel fuel and petrol/gasoline are similar; both of them are mainly mixtures of hydrocarbons. However, Diesel is considerably less volatile because it the compounds in it are of higher molecular weight; they have a higher boiling point ... and also a higher freezing point.
Because it's made lower down on the 'cracking tower' . -The higher gas is vented off, the less viscous it will be.
Diesel engines are generally more efficient than gas engines. A Diesel Pickup truck will normally get far more miles per gallon than a gas one and still have equal or greater power available. Plus diesel engines tend to last much longer than gas engines easily running well over 300k miles with little to no issue.
"Petrol from the ships" Is a famous phrase by Mina Ruhini, which firmly answers your question - Ships run on petrol.
Chainsaws use a mixture of 80% petrol and 20% 2-stroke oil. You can buy it already mixed, or (more commonly) mix it yourself.
Either it will not run at all, or run very poorly. Either is likely to do severe damage to the engine.
Because a diesel engine doesn't need spark to ignite the fuel. Diesels are very high compression engines, and the high compression makes enough heat to ignite the fuel. To prevent the fuel from igniting prematurely, it is injected only after the valves have closed and the piston is near the top of the compression stroke. Once the fuel is injected, the heat from the compression ignites it instantly.
More torque, less maintenance, longer engine life, and uses less fuel.
Diesel cars/trucks are more costly because of the design of the engine. The compression ratio (the pressure in the cylinders that make the power) is 8 or 9 to 1 for gas vehicles and 15 to 1 for diesels. In order to operate dependably at the higher diesel pressures, the engine itself must be made far more massively (all the parts have to be made stronger) and the tolerances must be more exact. This costs… Read More
Overall each piece is bigger and heavier.
No, it is not better it is just another type fuel.
The engine will stall and not run. No damage will be done. You will need to drain the fuel tank, replace the fuel filter, blow out the fuel lines, and prime the engine to get it started again.
Yes, petrol will work in a diesel engine but will run rough for a short time before the engine needs extensive and expensive repairs.
yes, but first you would have to get a set of glow plugs, raise the compression to about 30-1, remove your catalytic converter, remove your spark plugs, change your fuel injectors to direct injection, and in most cases, reinforce the block. so yes, but no NO!!!!!