Gasoline Definition and 100 Threads

In an Internal Combustion Engine, does liquid gasoline itself burn/combust, or is it the gasoline VAPOR emitted from the liquid gasoline by evaporation that burns/ combusts? (assuming that Oxygen is present in the Air and Fuel mixture)

If I knew how much of the gasoline evaporated, then I could use p = nRT/V to fine the partial pressure of the gasoline and add it to the pressure of the atmosphere. So my question is, How do I find how much of the gasoline will evaporate. I would think that the gasoline would evaporate until it...

I tried to solve the task in different ways, I had different ideas but none of them led me to the correct solution. I would be grateful if someone would explain at least the initial part of the task to me. True answer: 10-3K-1

Say there's 2 grams of gasoline (vapor) (E85) and sufficient air, how can you calculate the force/pressure of the explosion when this mixture is ignited? The pressure of the mixture before ignition is 400 pascal. The calorific value of the fuel is 45 MJ/kg. The volume in which the explosion...

I am struggling with what seemed to be a simple problem and any help would be greatly appreciated. I have to determine the amount of pressure created when air is displaced buy gasoline flowing into a tank. The gas enters the tank at 10gpm. The entrance has a diameter of 1.5" and the vent has a...

Everything I've read about them has said they would be ineffective or have very minimal benefit due to lower compression on non-diesel engines and other factors. Yet I am aware of one that sold well in the '80's and '90's and was tremendously effective as a "mountain tamer" in the RV industry...

Homework Statement The problem is "A multicylinder gasoline engine in an airplane, operating at 2.40 10^3 rev/min, takes in energy 7.98 10^3 J and exhausts 4.50 10^3 J for each revolution of the crankshaft." and it wants me to find the liters of fuel consumed in 1 hr of operation if the heat...

If you took a 400 horsepower gasoline pickup engine and a 400 horse power semi engine and hook them up to a transmission so that they had the same output rpm while each engine is at their peak horsepower rpm would they be able to pull the same load fairly similar?

Dear Everybody, A 2.80 kg steel gas can holds 20 L of gasoline when full. What's the average density (in kg/m^3) of full gas can, taking into the volume occupied by steel as well as by gasoline? Work: Given the mass of the steel gas can= 2.80 kg The Total Volume of Gas can= 20.0 L The...

I understand that there is some research going on into gasoline (i.e. petrol) fuel cells (as opposed to the more typical hydrogen or alcohol fuel cells). How much energy can be released through a gasoline fuel cell, as opposed to simply burning it in an internal combustion engine? Will more...

Could a modern inline eight gasoline engine be competitive with other designs, especially for high performance applications such as a limousine or supercar?

Once I had stored Petrol (Gasoline) in a airtight 1 liter plastic container for 6-8 months. When I opened the container, Gasoline had become a thick brown gel. Is it reusable ? Is it still Gasoline or it has become something else ? Thx

Homework Statement (a) A rectangular gasoline tank can hold 39.0 kg of gasoline when full. What is the depth of the tank if it is 0.450 m wide by 0.900 m long? m (b) What is the volume of the tank? (It is suitable for a passenger car.) gal Homework Equations Density of gas=719.7=mass/volume...

I have an idea that should work but I need some accurate numbers. If i mix 1 gallons of gasoline with 1 gallon of water then let is separate i should get approx 90% gas and 110% water that contains the alcohol. I think I can use less water but don't know how much less, 1 pint, 2 pints, 3...

Hello chemists, need some help here. I'm trying to calculate the power output of a certain otto cycle using different fuels, specifically gasoline, ethanol and different combinations of the two like 85% ethanol and 15% gasoline or 50% ethanol and 50% gasoline. However I have found it difficult...

how much pressure can be generated upon ignition of gasoline/air in an internal chamber at atmospheric pressure? I know that combustion engines can generate well over 1000 psi on the piston but this occurs when the air is compressed to begin with.

Hello, Can someone tell me the optimum stoichiometric air/fuel ratio of gasoline VAPOR? I know that with liquid gasoline the optimum stoichiometric air/fuel ratio is 14.7 parts ambient air to 1 part gasoline. Thank you in advance for your help.

Dear PF Forum, I'd like to ask a questin regarding our use of gasoline. Gasoline that we consume everyday, when did they come from? Is it from Carbon Period 350 mya? or Before And does Nature still produce fossil fuel? And if it doesn't when did Nature stop producing fossil fuel? Cretaceous...

Does the gasoline additive can be complete and effective cleaning of carbon? This is the recipe I found on the Internet formula Methanol 60~70% Isopropyl alcohol CK Ethylene glycol monobutyl ether, 10~20% Diacetone alcohol 10~20% If I need to raise the octane number need to add tert-butyl...

Hi all I'm looking for gasoline engine drawing with a displacement of 3.5-4 liters. Any suggestions where I could find one? Oleg

which gas has more power explosion in internal combustion engine...hydrogen or gasoline...

I am requesting for another set of eyes to double check my work, I believe my answer is correct but I am not sure. I also do not understand why 0.75 is the specific gravity of gasoline in this equation when it actually can range from 0.71-0.77 1. Homework Statement Calculate the pressure...

Hello guys, I'm currently working on a car simulation just for fun, but I'm stuck... The force to move a car is generated by burning fuel ( to be more percise, diesel or gasolin). But there are more variables: Pressure (i know this because of turbos and such) amount of fuel amount of air (or...

Homework Statement Homework Equations : Densities[/B] ##\rho = 680 ## gasoline ##\rho = 1000 ## freshwater ##\rho = 7800 ## steel The Attempt at a Solution I first converted 210 liters to volume in m3 by dividing 210 by 1000. Then I used this volume and the given density to find the mass...

Hello everyone, (Hope this is the right place to post this) I am wondering, and have for a while, if there is any "real" answers, as to why some people report much lower fuel economy running ethanol mixed gasoline fuel. Math says, that ethanol fuel is lower in BTU's than gasoline, so taking...

Greetings! I have been thinking about creating a Gasoline electric bike. The reason being is that good batteries are very expensive. In fact more expensive than a good quality gasoline motor. I don't want a direct drive gasoline motor do to it being less stealthy and more cumbersome running...

I did an experementing mixing 10%, 20%, 30% and 25% kerosene with gasoline that contains 10% alcohol. 10% kerosene + 90% gasoline the lawn mower engine starts easy and runs very good. 20% kerosene + 80% gasoline the lawn mower engine starts easy and runs very good. 30% kerosene + 70%...

Say there is a chair soaked in gasoline. If someone is to walk in the room the smell is immediate if the chair was lit on fire the liquid gasoline would ignite the chair. However, what about the particles that constitute the smell of it? Why don't they ignite as well? What is the nature of the...

Recently I bought an old car (1954 Ford Zephyr, a six-cylinder 2.2 liter English car) whose recent history was essentially unknown to the seller but had probably done little running for some time. He warned me that the engine was not running correctly - the car was blowing black smoke and...

Does someone know how much torque a 20hp gasoline engine produce at 3500rpm? An equation that I can use to figure this out would be helpful also.

Homework Statement Premium gasoline produces 1.23×108 J of heat per gallon when it is burned at a temperature of approximately 400ºC (although the amount can vary with the fuel mixture). If the car's engine is 25.0% efficient, three-fourths of that heat is expelled into the air, typically at...

I have the following question, intended for a car powered by a 4 cylinder, non turbo, gas engine. I would like to a rather conceptual answer, but anyway I will put some actual numbers. It´s said to achieve it´s max torque (200Nm) at 4000 RPM It´s max power is 150HP at 6500RPM I don´t know...

This looks like it's mainstream work being done at the Naval Research Lab -- interesting stuff: U.S. Navy's new stealth destroyer http://www.cnn.com/2014/04/10/tech/innovation/navy-new-technology/index.html?hpt=hp_t2

Homework Statement Gasoline has an energy content of 9.38 × 10^5 J/oz. If a car, with a mass of 1500 kg, is accelerated to a speed of 29.1 m/s, how much gas is consumed by the engine, assuming 40% efficiency? Homework Equations w=fd w= ΔKE The Attempt at a Solution So I...

Homework Statement A 230-l steel drum is completely full of gasoline. What total volume of steel material can be used in making the drum if the gasoline filled drum is to float in fresh water with the whole volume immersed? Homework Equations ρwater=1000 kgm^-3 ρgasoline=680 kgm^-3...

Will an electric vehicle use less joules going up a hill than a gasoline vehicle, because electric vehicles are more efficient? I've read that electric vehicles use on average 800,000 joules per mile, while gas vehicles use 3.3 million joules per mile. Assuming those numbers are based on...

Homework Statement A typical car gas tank holds 15 gallons A) Calculate the energy content of this much gasoline B) Calculate the chemical energy content of 15 gallons of hydrogen gas under normal conditions (12.8 MJ/m^3) and compare with the energy content of gasoline Homework...

Hello. I've gone round and round in my studies of engines and related technologies and I've come to the point where I would benefit from a better understanding of how combustion reactions occur and are sustained in gasoline engines. I have been looking for some basic introductory level...

So this one is going around Facebook. I wanted to run it past my trusted scientifically literate friends here at PF before heeding any of the "advice."

Hey everyone, I am trying to figure out how to do this, but I don't know where to start, can I use pressure, electricity, graphite, and pure hydrogen, do i need to melt the graphite, or maybe just dissolve it. I could use a little help, I know it may be cheaper to just buy it, but that defeats...

Hi, my lecturer has given us two graphs showing the general shapes of the max torque curves for both gasoline and diesel engines, and they clearly show that the diesel engine has a much flatter torque curve than the gasoline engine, but not explained why. Expected to find this information...

Gerotor style "turbine", or gasoline engine Hi, I have read a bit about gerotor style pumps. It seems to me that there is only two rotating, balanced parts. If water pressure can enter on one side, the water have no where else to go than through the gerotor before it can continue. The...

I was cruising the web for race fuel ideas and found this. I had to comment... https://www.physicsforums.com/showthread.php?t=195647 The UOP Shadow team ran a Can-Am car in 1971 and their crew chief was a self taught engineer named Peter Bryant, a really smart guy. UOP sold unleaded fuel and...

Calculating the internal energy of gasoline is fairly simple, because it wouldn't vary much with temperature or pressure. For hydrogen, though, it would vary significantly with each. What sort of ranges would we be looking at? I'm curious if it would be possible to get the same amount of...

l am trying to use used oil to gasoline engine l make geet reactor to vaporized petrol diesel but no success to oil how can l convert used engine oils and food oils to gas or flammable liqiuds thanks jonathan

So last night, a bit on the tipsy side, I drew this on paper(then in paint) and I don't see why It would not work. I'm not really an engineer so I'm not sure if there's some flaw in my logic. The idea is based on a 5HP engine with an electric starter. It automatically starts the engine using a...

I haven't read or heard about anywhere, but is it possible to run a diesel engine on gasoline/petrol?

Homework Statement "One gallon of gasoline contains 3.1*10^7 calories of potential energy that are released during combustion. If 1 gal of gasoline can provide the force that moves a car through a displacement of 25 mi, what is the average force produced by the gasoline?" Homework Equations...

Driving at -30 Celsius versus driving at +25 Celsius. The gasoline has less kinetic energy at -30 Celsius... Yet our cars run fine at -30. You would think that there would be a massive difference because 60 degrees celsius difference (-30 vs +30) is a LOT of kinetic energy. Most...

In one of their frequent reports about the rising price of gasoline, ABC's "World News Tonight" recently cited a survey claiming that the average American family used $4000 worth of gasoline last year. I'm one of those people who writes down every gasoline purchase in a little notebook, to keep...