A six cylinder, four-stroke diesel engine develops a power of 200 kW at 2000 rpm. Thebsfc is 0.2 kW/kg h of fuel with 34.9° API. The fuel is injected at an average pressureof 350 bar and the pressure in the combustion chamber is 40 bar. Assuming Ca forinjector 0.75 and the atmospheric pressure 1 bar. Determine the period of injection inseconds if the total orifice area required per injector is 0.4876 × 10-6 m².

Answered: A six cylinder, four-stroke diesel…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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(8) An SI, six-liter, V8 race car engine operates at WOT (wide open throttle) on a four- stroke cycle at 6000 r.p.m. using stoichiometric nitromethane. fuel enters the engine at a rate of 0.198 kg and combustion efficiency is 99%. calculate: (a) Volumetric efficiency of engine. (%) sec (b) flow rate of air into engine. (ke sec (c) Heat added per cycle per cylinder. (kj) ANS: (a) 95, (b) 0.337, (c)5.35
1. Ideal turbojet problem: An ideal turbojet engine operates at an altitude of 15 km.Look up values for Ta and p a in a standard atmosphere table on the web.Flight Mach number is 0.85. The compressor pressure ratio CPR is 40, the maximumgas temperature (T04 ) is 1500 K. The Jet-A fuel has a heating value of Q R = 45,000kJ/kg. The nozzle perfectly expands the gas so that exit static pressure p e equals p a .Use the same equations as we did in our lecture problem for an ideal turbojet.Ideal means that the inlet, compressor, turbine and exhaust are isentropic.As we discussed, the Mach number of the air is small at stations 2-5 so static andstagnation conditions are the same. a) Find these values for an idea on how to do part bi) what is the exit velocity of air in the exhaust ?ii) what is the specific thrust, in kN thrust / (kg/s of air) ?iii) what is the specific fuel consumption = kg/s of fuel / kN thrust ?iv) what is the fuel-air ratio f ?b) Repeat part a, but now use the Excel…
Sketch the air-standard otto ott Diesel cycle on P-V and T-S diagrams. Two engines are to operate on Otto and diesel cycles with the following data; Maximum temperature 1400K, exhaust temperature 700K, state of air at the beginning of compression is 0.1 Mpa and 300k. Compare for 1kg/min of air for respective cycles; i) Compression ratios ii) Maximum pressures iii) Thermal efficiencies iv) Rate of work output
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Air standard Otto cycle have 10 compression ratio, if specific heat at constant volume ( CV) increases by 1.5%, the percentage change in the efficiency of Otto cycle will be-
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