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Can a petrol engine run on lean air-fuel ratio such as 30 by 1 while a diesel engine can?
Wiki User
∙ 9y ago
No, the perfect fuel/air ratio is 14.6 to 1. A ratio of 13 to 1 is a safe ratio for most non turbo gas engines. Turbo engines can run a 12 to 1 ratio. Chrysler's lean burn system of the 70's and 80's used a ratio of around 18 to 1 and it was horrible. No gasoline engine can run at 30 to 1.
Wiki User
∙ 9y ago
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Why compression ratio of petrol enine is 8 where as diesel engine is 22?
because a diesel engine ignites its fuel with pressure, and not with a spark like a petrol engine. that is why a petrol engine does not need as high a compression ratio as a diesel engine
What will happen if we put 1 ratio 4 petrol and methanol mixture in petrol engine?
it will increase its performance
What will happen if you use diesel in petrol engine?
Your car will very soon stop running. Then you will have to go to a mechanic/garage to empty the gas tank and put the right fuel in it. The same thing will happen if you put petrol in diesel engine. My co-workers did BOTH of these things on our company cars at different times by accident. Both cars worked after they emptied tanks and put the right fuel in them.the engine wont work coz the property of diesel fuel is that,it ignites only at a high compression ratio (around 17-19:1),whereas a petrol engine has a compression ratio of 9:1(+/- 2).so less compression results in less pressure and lesser temperature.
How do petrol and diesel engines work?
No. Diesel and petrol, while both petrochemicals, act quite differently. Petrol is ignited by a spark, and at a relatively low pressure. Diesel 'self ignites' when placed under sufficient pressure, therefore diesel engines do not use spark plugs, and require higher operating pressures to work. To allow for the different pressures, there are large differences between the designs of petrol and diesel engines, carburettors/fuel injectors and valve systems. The only way to convert a petrol car to a diesel (or vice versa) is a complete engine swap.
Why is compression ratio highest id diesel engine?
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 it to make much more torque at lower RPMs. Torque is pulling power which is what a truck needs.
Why compression ratio of petrol enine is 8 where as diesel engine is 22?
because a diesel engine ignites its fuel with pressure, and not with a spark like a petrol engine. that is why a petrol engine does not need as high a compression ratio as a diesel engine
What will happen if petrol is used as a fuel in diesel engine?
Petrol or gasoline in a diesel will cause internal engine damage. if petrol is used in diesel engine it may cause explosive sound with burning ....bcz high compression ratio ......
Why is diesel engine more expensive than petrol engine?
Because of higher compression ratio.
Is there any vehicle which can run on both petrol and diesel?
A vehical that runs on petrol and diesel is impossible as they are both ignited in different ways. For exaple petrol is ignited by the spark plugs and a diesel is ignited by the shear force of the compression from the pistons. A petrol engine has a round 9:1 compression ratio and a diesel has about 20:1 but these veary from engine to engine I hope that hasn't lost you
Does disel engines have a higher cc compared to petrol engines?
No..the compression ratio is much higher eg a small petrol engine will have a ratio of 8:1 where a diesel small engine has around 17:1..
Why diesel engine car is costlier than petrol engine car?
Due to the increase in the compression ratio of a diesel which fires on compression rather than spark, the engine is built much stronger than a petrol engine. It therefore just costs more to manufacture.
Why diesel engine is more better than petrol engine?
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, where the ratio is 50:1, and you'll note a significant savings. --- Other Advantages: Diesel designed his engine to run on virtually any available fuel (e.g.; vegetable oil) for times of short supply of petrol/gasoline. The diesel engine has higher TORQUE, meaning that it can haul larger loads than a gas/petrol engine. There is no Ignition Circuit to fail on a diesel engine. The ignition is achieved by compression and a "glow plug" which remains heated between piston cycles. ---
The air fuel ratio of the petrol engine is controlled by?
The air fuel ratio of the petrol engine is controlled by Carburetor
Why diesel engine generates more power than a petrol engine?
Higher compression ratio, therefore it develops far more torque which equates to pulling power.
What is difference between petrol engine and diesel engine in term of air fuel ratio?
Petrol ideal air/fuel mixture is 14.7 to 1. Diesel, ideal fuel/air mixture is 14.6 to 1. As very few engines run at the ideal mixture they are basically both the same.
The main difference between the internal combustion engine and the diesel engine is that the diesel engine?
The main difference between diesel motors and petrol motors is in how the fuel is ignited. Gas engines use spark plugs to ignite slightly compressed fuel molecules. Diesel motors use extreme heat and compression to cause the fuel to ignite. For example a petrol engine may have an 8-1 compression ratio and a temp. of 5,000 degrees in the combustion chamer a diesel engine will have a 15-1 ratio and around 15-20,000 degree combustion chamber give or take depending on the engine design. In the end there not that diffrent.
What is the difference between diesel and petrol cars?
Diesel can give much better fuel economy (miles per gallon or kilometers per liter) than petrol but the downside is that diesel engines cost more to manufacture than petrol engines. So a petrol-engined vehicle usually costs less money to buy than a similar make and model that has a diesel engine. The design of a petrol-burning engine is different from that of a diesel engine: a petrol engine burns petrol (called gasoline in the US) which is ignited by a spark plug. A diesel engine burns diesel fuel which self-ignites when compressed.
