AVS1230_Lab7_fuelsystems_2023

Problem 4) LHV and HHV of Fuels Consider the following list of some fuels with their LHV and HHV. a) Provide a plot of the LHV as a function of the molecular mass of the fuel. Group the fuels in categories and discuss any correlation between the heating values and the molecular mass. b) Provide a plot of the percentage increase of the HHV relative to the LHV as a function of the molecular mass of the fuel. Discuss any correlation or generalization. Fuel LHV and HHV LHV Methane (CH4) Propane (C3H8) Isooctane (C8H18) Cetane (C16H34) Methanol (CH40) Ethanol (C2H60) Carbon Monoxide (CO) (MJ/kg) 50.0 46.4 44.2 44.0 20.0 26.9 10.1 HHV (MJ/kg) 55.5 50.4 47.8 47.3 22.7 29.7 10.1

Discuss the basic operating principle of Internal combustion engines (ICE) we are currently using (provide drawing if necessary)

How the analyses and calorific values of fuels can be reported?

Subject : Combustion Engineering Please provide complete solutions with formulas on how to get each values without rounding off.

What is the testing procedure for diesel systems as outlined by the national environment protection (diesel vehicle emissions) measure?

A simplified diagram of the propulsion for GOES-R, a weather satellite in GEO is shown. This is a  ______ liquid propellant system that uses a  ______ system to maintain the pressure in the fuel and oxidizer tanks.

The amount of theoretical oxygen for combustion of a given fuel can be computed from the complete flue gas analysis of the fuel. * True False

7. Describe the difference(s), if any, between pre-mixed and diffusion type combustion. Please select all answers that apply: a) In pre-mixed type combustion, the fuel and oxidizer are mixed before entering the combustion chamber. b) In diffusion type combustion the fuel and oxidizer enter the combustion chamber from two separate inlet streams. c) In pre-mixed combustion the fuel and oxidizer enter the combustion chamber through a single stream. d) In diffusion combustion, the fuel is injected through a nozzle. e) In diffusion combustion, the oxidizer swirls around the fuel nozzle.

AB power engineering  1.) Illustrate the different parts of the cooling system of an internal combustion engine

Apart from providing lubrication to engine bearings, What other important function does lubricating oil perform?

(6a) Explain and discuss in your own words, the following three concepts incombustion: stoichiometric mixture of air and fuel, weak mixture and richmixture. Explain their importance in combustion applications

15.)Find the mole fraction in percent of H,0 at the products of combustion in real combustion of 1 mole of octane (CHu) if the amount of excess air is 30%? Please Answer problem number 15. But if you can solve number 16, it will be appreciated much and rated high. Thanks!

What is the required diameter in meters of a cylindrical tank which has a length of 3 meters used for oil storage that will supply the engine for 5 days having a fuel consumption of 60Kg/hour at 27 degrees API? Please Answer # 9. If you can answer # 10 it will be appreciated much and rated high. Thanks!

The following are the required characteristics of the IC engine fuels, EXCEPT   Select one: a. Starting of the engine should be quick and reliable at any ambient condition. b. The surface of the combustion chamber should remain free from carbon and other deposits. c. The combustion process must be slow. d. The fuel should get effectively atomized, vaporized and well mixed with the air.

The Renault Kaper is a popular brand of car in Republica. It has a fuel capacity (tank size) of 28 liters. It has afuel efficiency of (f)___15.2_____ kilometers per liter. With a full tank of fuel, could a Renault Kaper travel the (g)___471______ kilometer distance between Capital City and Costa Bay without needing to refill the tank? Show all supporting calculations. Write an explanation of your conclusion in complete sentences.

The rating of the ability of a gasoline to burn smoothly in an internal combustion is its     a. octane rating.   b. boiling point.   c. energy value.   d. fuel density.   e. molar mass.

What is the first fuel used before the adoptation of crude oil?

Importance os specific fuel consumption

Provide schematic diagram and complete solutions.

QUESTION 6 (Fuels and Combustion) The chemical analysis by mass of a fuel is: C = 87.1%, H2 = 4.4%, O2 = 1.2% and ash = 7.3%. Determine the amount of air required for combustion of the fuel.

What will happen if you keep Auto ignition temperature close to fire point of a fuel on P-Theta diagram

The specific gravity of a fuel oil is 0.803 at 15.60 C. What is its API rating? 3 decimal places

All the parts of internal combustion and their various functions?

State the different ways of monitoring fuel oil quality and how to maintain an acceptable value during operation.

Engine Four-Stroke Cycle Valves Closed Valves Closed Intake Valve Closed Intake Valve Open Exhaust Valve Open Spark Plug Exhaust Valve Closed Air-fuel Mixture Spark Plug Firing Exhaust Gases Combustion Chamber Piston Connecting Rod Crankshaft Intake Compression Power Exhaust Piston pushes out burned gases Air-fuel mixture Explosion forces Air-fuel mixture is drawn in is compressed piston down Examine the diagram above. It shows the four basic steps in a 4-stroke internal-combustion engine that are usually found in cars. Based upon what you have learned, explain why, in the 3rd step, the explosion forces the piston down.

What are the major components of a Piston Engine fuel System What are their major functions or roles within the system

intake vaive iii) iv) intake vi) on covers the compression laru Tuel injector power The diagrams show the cylinder of a petrol engine in 4 stages. Petrol vapour and air are drawn into the cylinder, The mixture is then squeezed together, and then exploded by a spark. The explosion pushes down the piston. The exhaust gases are then expelled from the cylinder. exnaust vaive 010 Use the first law of thermodynamics to analyse the energy changes during the process. At each stage explain what happens to the pressure of the gas; exhaust the temperature of the gas; the number of molecules in the cylinder; the internal energy of the gas; the work done on or by the gas: the thermal energy exchanged with the environment. [AC 4.3]

External Problem: Fuel, air and combustion Gasoline having a chemical formula CaH17 is burned in an engine at a fuel-air equivalence ratio =1.19 and a temperature of 1000K. a) Write the stoichiometric combustion equation of the fuel; b) Write the reaction equation corresponding to the given fuel-air equivalence ratio.

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draw a trend analysis of fuel levies from 2000- 2022

The three T's of combustion are commonly referre1 d to as a. time, temperature, and type of fuel b. temperature, type of fuel, and turbulence c. time, turbulence, and temperature d. type of fuel, turbulence, and time

Task 8 - Induction Systems In order for combustion to take place an induction system is required to feed fuel and air into the cylinder of an engine. To improve efficiency and performance spark ignition (SI) engines are now adopting compression ignition (CI) engine technology by injecting fuel directly into the cylinder just before the point of ignition however these engines still require an air induction system. Carburettors: before fuel injection technology had been fully developed carburettors (carbs) were used to create a fuel/air ratio at different engine speeds and loads. A cold start facility was also fitted albeit manually operated. The demand for more performance has meant the fixed choke carb' was no longer suitable. More complex carbs' were developed (twin choke) as well as variable choke (constant depression) carbs which used engine vacuum (during throttle opening) to vary the size of choke according to operating requirements.