COMBUSTION ENĞINEERING PROBLEM 1: A Diesel engine overcome a friction of 200 HP and delivers 1000 BHP. Air consumption is 90 kg per minute. The Air/fuel ratio is 15 to 1. Find the following: 1. Indicated horsepower 2. The Mechanical efficiency 3. The Brake Specific Fuel Consumption
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- 1 A gasoline engine working on four stroke develops a brake power of 20.9 kW. A Morse Test was conducted on this engine and the brake power (kW) obtained when each cylinder was made inoperative by short cir- cuiting the spark plug are 14.9, 14.3, 14.8 and 14.5 respectively. The test was conducted at constant speed. Find the indicated power, me- chanical efficiency and bmep when all the cylinders are firing. The bore of the engine is 75 mm and the stroke is 90 mm. The engine is running at 3000 rpm.COMBUSTION ENGINEERING 1. The following details were noted in a test on a single-cylinder four-stroke oil engine: bore = 150 mm; stroke = 160 mm; speed of engine = 500 rpm; fuel consumption = 0.0475 kg/min; calorific value of fuel = 42,000 kJ/kg; the difference in tension on either side of the brake pulley = 400 N; brake circumference = 2.2 m; length of the indicator diagram = 50 mm; area of positive loop of indicator diagram = 475 mm²; area of negative loop = 25 mm?; spring constant = 0.8333 bar per mm. Calculate: d) The Brake thermal efficiency, in percent kg e) The Brake Specific Fuel Consumption, bkW-hra) Explain what do these terms mean: fmep, mfmep, pmep, amep, imep, bmep b) Write the equation relating fmep to mfmep, pmep, and amep; c) Write the equation relating fmep to imep and bmep; d) At a given engine speed, the following parameters are obtained as follows: 1600 bmep kPa 228.45 fmep kРа 124.38 mfmep kPa 29.52 amep kРa Calculate the net indicated mean effective pressure at the same engine speed.
- Assignment 1: TIME VALUE OF MONEY Objective: To further understand the concept of the time value of money. INSTRUCTIONS: In each problem, a. Translate data given in problems into their respective graphical representations - i.e. draw the correct cash flow diagram. b. Write down all pertinent given information or data on your paper. c. Calculate answers correctly. 2. A 12-cylinder heavy-duty diesel engine will have a guaranteed residual value of $1,000 in 5 years. Today (year 0) the equivalent worth of this engine is how much if the interest rate is 9% per year?AMNT 280 Assignments 1-4 Media Presentation Categories Of Reciprocating Engines Develop a Media Presentation develop a power point media presentation Presentation will require researching a module specific topic For this activity you will research the four categories of reciprocating engines In your presentation address the following: 1 Research the four different types of reciprocating engines2 Provide an overview of the design, construction, and firing order of each engine 3 Provide research concerning which air frame used the engine Presentation Guidelines Note:This information applies to all Media Presentation activities and will not be repeated Present your research material in the format of a written document (Introduction, body, and conclusion) Presentation requirements consist of 5-7 slides with a balance of both bullet text information and images; does not include the title or reference slide APA formatting and structural guidelines apply Additional information…C Dynamic Analysis and Aeroelasticity SECTION B Answer TWO questions from this section ENG2012-N The moment of inertia of a helicopter's rotor is 320kg. m². The rotor starts from rest and at t = 0, the pilot begins by advancing the throttle so that the torque exerted on the rotor by the engine (in N.m) is modelled by as a function of time (in seconds) by T = 250t. a) How long does it take the rotor to turn ten revolutions? b) What is the rotor's angular velocity (in RPM) when it has turned ten revolutions?
- True Story! The 1998-1999 Mars Climate Orbiter mission was declared a total loss in1999 as there was a unit conversion mismatch error between Lockheed Martin and NASA. Themismatch was in the thruster force units. NASA used the SI system which called forNewton-Seconds (4.45 times as large) of thrust and Lockheed Martin used Pound-Force Seconds.Calculations placed the Orbiter at 68 miles from the surface as it went into orbit, but it waswithin 57 km of the surface after the breaking maneuver. Any distance from the surface lessthan 50 miles would have caused the Orbiter to crash.a. What was the actual distance of the Orbiter from the surface in miles?b. In percentage, how far off from the calculated 68 miles was the Orbiter?-) Prof. K. took a Tesla Model S for a test drive. The car weighs 4,500 lb and can accelerate from 0 to 60 mph in 2.27 seconds. The car has a 581 kW battery pack. Help Prof. K. determine the efficiency of the vehicle [Ans. to Check 55.5%]. Note: The equation we learned in class P = F v ONLY APPLIES if velocity is constant. Use the steps below to guide your thought process. Develop a symbolic relationship for the force required to move the car forward. Compute the work done by the car (in Ib-ft). Calculate the power required to do this work (in kW). 2) After playing a game of pinball, you decide to do some calculations on the launching P Type here to search 9:09 AM 33°F Mostly sunny 3/7/2022 Esc DII PrtScn FB Home F9 End F10 PgUp PgDn Del F4 F12what are the topics and other online calculators must be included in the mechanical engineering that teach about pump capacity, engine design and aircon sizing for the betterment of the engineering education foundation?
- CHAPTER 5 : DIESEL ENGINE POWER PLANT A six cylinder, four-stroke CI engine is tested against a water brake dynamometer for which B.P = WN/17x10' in kW, where W is the brake load in newton and N is the speed of the engine in the r.p.m. The air consumption was measured by means of a sharp edged orifice. During the test following observersations were taken : • Bore • Stroke • Speed • Brake load Barometer reading = 10 cm = 14 cm = 2500 rpm = 480 N = 76 cm Hg • Orifice diameter • Co-efficient of discharge of orifice • Pressure drop across orifice • Room temperature Fuel Consumption = 3.3 cm = 0.62 = 14 cm of Hg = 25°C = 0.32 kg/min Calculate following : i. The volumetric efficiency The brake mean effective pressure ( b.m.e.p) The engine torque The brake specific fuel consumption ( b.s.f.c ) ii. iv.zain 10 2G 3G zain IQ Z Questions of Lectu... -> Questions of Lecture Five: Q1)) Define the following: 1) The stress & the strain 2) Mechanical stress and mechanical strain 3) yield strength and tensile strength 4) Modulus ofelasticity and the strain hardening Q2)) Fill the following blanks: 1)) Tensile tests are used to 3)) The most application tests of applied static stresses to which materials can be subjected are ---------, ---------, --------- 4)) Tensile stresses cause ---------, and compressive stresses ----------, while shear stresses ----------, of the material. 5)) Engineering stress-strain is important in ----------, while the true stress-strain is important in ---------- 6)) The unit of mechanical stress is --------- or ----------, while the unit of strain is n compression test, when specimen is compressed, its height is ---------, and its cross-sectional area is 8)) Compression is in contrast to the tensile, the compression test contributes to the ----------, in stress…During coastdown testing of a family passenger car, the following road load drag force characteristic was derived: FRL = 0.392v²+162 Where FRL is given in Newtons, and v, the vehicle speed in m/s. It is desired that the vehicle should have a top speed of 200km/h. Assuming a transmission efficiency of 90%, which of the following engines would be most suitable? Type BMEP (Bar) Maximum Engine Cubic Capacity Speed (rpm) (CC) Normally aspirated SI engine 11 6500 1400 Turbocharged Sl engine 16 6000 950 Normally aspirated Cl engine 8.5 4500 2400 Turbocharged and aftercooled CI 12 4500 1800 engine