3) Peak pressure Vs. Engine Speed ( a ) ( b ) ( c ) ( d ) ( e ) ( f ) Figure 53. Peak pressure vs. engine speed for :(a) diesel fuel ,(b)GTL fuel ,(c)diesel-GTL blend,(d)diesel-waste cooking oil blend (e) diesel-GTL-waste cooking oil blend (f) diesel-GTL-waste cooking oil-corn oil blend In a compression ignition engine, the combustion characteristics of the fuel and the engine performance and emission depend upon the ignition delay period. The longer the delay period, the higher is the rate of combustion and the higher is the resulting pressure rise. The rise in pressure inside the cylinder is attributed to the rate of combustion as well as the ignition delay period of the fuel, which in turn depends on the cetane index. The higher the value of the cetane index of the fuel, the shorter is the ignition delay period. Figure 53 demonstrates the variation of the in-cylinder peak pressure with speed for six different types of fuel. As it can be deduced, the peak pressure decreases with increasing the engine …show more content…
Figure 55 demonstrates the variation of the in-cylinder peak pressure with load for six different types of fuel. As it can be observed, the peak pressure increases with increasing the engine load. The reason behind that is that the mass flow rate of air is kept constant when the engine speed is steady ( =1700 rpm in this case) ,however the amount of fuel injected is increasing , thus the rate of mixing between air and fuel is lower which delays the ignition period
The Octane rating refers to the amount of compression that the fuel can undergo before a combustion reaction occurs. Furthermore, the reason behind the use of isooctane instead of normal octane, is that the activation energy required for combustion is higher with isooctane due the more stable shape, translating to
The Law of Inertia is the net force of the object greater than the gravity pulling it down and it will stay at rest until something happens(Getting a Bang Out of Breath Spray). It stays at rest until an unbalanced force makes the object go into motion( Getting a Bang Out of Breath Spray.) Is it true that when the kinetic energy of a canister launched straight up is at its maximum, the potential energy is near zero, and vice versa. It is false, the potential energy reaches its maximum during flight but returns to 0 when the canister reaches the ground(Getting a Bang Out of Breath Spray). What would a graph of pressure in the canister vs. time after spark ignition look like?
How has power made the diesel engine better? When Rudolf Diesel produced the compression engine it had no power to do anything. The engine had around 20Hp because it was one cylindered, also 4 stroke, was water cooled, also was air injected fuel. For an engine that was so tall and big it had no power. There was a lot of fuel being used to power it and keep it running.
As a child I grew up loving two things, sports & talking. Whether it be basketball, football, or any sport in between my attention has always been drawn immediately to the game, and if the game was breaking all I wanted to do was talk about it. As High School approached I quickly realized sports would definitely be something I wanted to pursue a career in, but as a girl it’s a little more challenging. Because of my love for talking to others along with my love for sports, sports broadcasting became the only right choice.
The Camaro has more horsepower because its V-8 which has 295 horsepower and a bore of 4.00” x 3.48” stroke and 10.25:1 compression ratio, then the mustang with 230 horsepower 4.00” bore x 3.00” stroke and 10.0:1 compression ratio (Irvine 2014). The newer Camaros and Mustangs are faster and have more horsepower, but the Camaro is still faster because it comes with a supercharger and the mustang only has a flat-plane crank (Bell 2016). The Camaro has the potential to be faster because its lighter than the mustang. The 2016 Camaro’s weight is at 3,750 and the 2016 mustang is at 3,800 pounds, the Camaro can go 0-60 in 4.1 seconds and the mustang goes 4.4, and in a ¼ mile the Camaro runs 12.3 and the mustang goes 12.8 (Cleveland 2016). The 2016 V8 super sport (SS) Camaro is 390 pounds lighter, and made with alpha modular platform (Brauer 2015), which makes to car fun faster.
“Every year 500,000 teens are injured in a car wreck. Every year 5,000 teens die in a car wreck meaning an average of 14 teens die a day. Car crashes are the No. 1 killer of teens in the U.S. Even more than alcohol and drug abuse, violence and suicide”. Teens are always excited to earn their license and drive out on the road for the first time, but not every time will be a success, it might also be their last.
Speeding and Teen Fatalities Speeding is becoming an increasingly large problems among teenage drivers. from 2000 to 2011 accidents caused by speeding increased from thirty to thirty three percent. The leading cause of death in teenagers is automobile accidents. (NHTSA) Seventy five percent of teen drivers crash due to critical errors like going to fast for road conditions. Speeding is a primary cause in a third of fatal crashes involving teen drivers, according to the Governors Highway Safety Association (GHSA).
Speeding is the act or practice of exceeding the speed limit. Speeding is very dangerous. It is not only dangerous for us, but for those around us. Injury Facts, 2012 Edition tells us that thirty-two percent of motor vehicle fatalities involve speeding. That is such a large percentage that can easily be decreased if everyone, including myself, would stop speeding.
The piston would then create a low pressure area below the throttle. concentrated at the edge of the throttle valve as the air passes the idle port Engine idle speed is set by two different adjustments. The amount of fuel is adjusted by the mixture adjustment screw at the idle port. The amount of air is adjusted by changing the throttle stop screw.
Thousands of people die each year from auto accidents. Many deaths caused by speeding leave families devastated. “Speeding accidents about as popular as drinking and driving accidents” (Boyles). Speed limits is supposedly what keeps us safe while out on the road. Many people think that they do not need to follow the speed limit signs.
Rediet Legese iLab Week # 6 CRUDE OIL DISTILLATION Introduction: The aim of this week lab experiment is to experiment distill crude oil and to check how temperature determine the chemical properties of crude oil plus how the boiling point can also show physical properties. They are two major finding in this experiment. he first finding was the point at which the raw petroleum is heated to the point of boiling, at 275 0C, the gas and kerosene oil are refined, however the oil (lubricant ) stays as an unrefined feature oil.
What is fractional distillation? Fractional distillation is a method of separating miscible liquids using heat. This technique is used for the separation of liquids which dissolve in each other. Several simple distillations are completed during fractional distillation using only one apparatus.
In American society today, there are many laws designed to protect all citizens. One of the those laws is having a speed limit. Speed limits are posted to protect us. Studies show that raising or lowering speed limits do not change the way people drive. In residential areas the speed limit is somewhere around 25-35 MPH, on city streets it is usually 45-55 MPH, on major highways it is around 55-65 MPH, and on interstates it is 65-70 MPH.
Speeding There are many effects of speeding, such as ticket fees, going to court, driver important class, and a rise in insurance. All of these effects will make you rethink speeding, no matter what the causes for speeding are. Speeding is a very serious matter that could be prevented. Running late, or just wanting to go fast are two of the major causes of speeding.
Petroleum Name: Sumaya Ismail Ali ID: K-715810110 Name: Marwa Mohamed Elneel ID: K-215810001 Dr: Kauser Fatima Environmental issues What it is ? Petroleum or Crude oil: is thick liquid, flammable, and it has several of color, found under the ground. Petroleum is one of the fossil fuel with Coal and natural gas.