Q1 part A

intake valve intake compression JO BI Tuel injector the temperature of the gas; power exnaust vaive 0010 exhaust 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. Use the first law of thermodynamics to analyse the energy changes during the process. At each stage explain what happens to i) the pressure of the gas; ii)

true or false need before 7:45 pm pleaseeee neeed it 1.Mass component that do not vary as it passes though the system is helpful if its mass balance is included in assessing the system Adiabatic system is a real system Control volume is a region in space surrounded by a control surface through which the fluid flows. Steam is said to be superheated if its actual temperature is higher than its saturated temperature at constant pressure Generation or depletion terms are included in a component mass balance if the component undergoes chemical reaction. Mass balance may refer to total mass balance or component mass balance. The degree of freedom of a system is equal to the difference between the number of unknown variables and the number of independent equations In a component mass balance, the component generation term has the same sign as the output streams. For water, the density of its vapors, liquid, and solid are in increasing order

Please Help with this question. Show clear steps and highlight the answers. Also explain the sub question related to the main question please. THanks!   Sub-Question:  The flow through the exit of the engine is supersonic or subsonic? Why?

There are heat engine cycles that can have a higher thermal efficiency than the Carnot cycle operating between the same temperature limits.  True  False

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]

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Answer the following statements by True or False: 1. Superchargers are used to increase the power of an IC engine by raising the intake pressure and thus allowing more fuel to be burned per cycle. 2. Scavenging is the process by which the oil rings scrape the lubricating oil from the cylinder wall and allow the oil to return to the oil pan. 3. The power output of a two-stroke engine equals that of a four-stroke engine for the same displacement. 4. After coolers are used after the compressor to drop the air temperature and thus increase its density. 5. The rotary engine has the advantages of better sealing of high pressure gases and less wear on seals.

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Which of the following will be useful for modelling the process in an air conditioning unit O No-flow Energy Equation O Steady Flow Energy Equation O Fourier's Law O Newton's law of cooling

Engine Type: Single cylinder Four stroke Diesel engine, Bore: 0.0875m, Stroke: 0.11m Capacity: 661.5 cc, Power: 6 H.P. at 1500 rpm, Torque: 2.96 kg.m at 1500 rpm and Compression Ratio :17.5:1 Explain how to measure the :- Fuel consumption. Inclined manometer readings for air flow. RPM, power output etc. (iv) Study of various components of diesel engine. (ii)

What are the major pollutants from the exhaust of SI and CI engines.

Algenib Sherately Alpher Sche M فرع واحد / تدلا سؤال/ Q1/Write a notes on heat balance sheet, draw that on the energy flow and enhance your answers with equations. 2:2 Q2/An indicator diagram taken from a single cylinder four stroke, compression ignition engine has a length of 100/mm and an area of 2045 mm². The indicator pointer deflects a distance of 10 mm for a pressure increment of 2 bar in the cylinder. If the bore and stroke of the engine cylinder are both 100 mm and the engine speed is 900 rev/min, calculate the mean effective pressure and the indicated power. If the mechanical efficiency is 0.75, what is the brake power developed. Draw the indicator diagram.) ip or bif 03 A diesel engine develops 5kW. Its indicated thermal efficiency is 0.3 and mechanical efficiency 0.75. Estimate the fuel consumption of engine in (a) Kg/hr (b) liters/hr (c) indicated specific fuel consumption and (d) brake specific fuel consumption. Take heat value of fuel 42000 kJ/Kg and density of fuel 0.87…

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.