An automobile with a 4-stroke cycle diesel engine operates at 2400 RPM. Fuel injection starts at 20°BTDC and asts for 0.00174 seconds. Combustion starts at 10°BTDC and ends at 35 °ATDC. Calculate: 1. The ignition delay in crank angle degrees and in seconds 2. The duration of fuel injection in crank angle degrees of engine rotation 3. Crank angle degree with respect to TDC when the fuel injection stops 4. The burn angle or combustion duration in seconds

An automobile with a 4-stroke cycle diesel engine operates at 2400 RPM. Fuel injection starts at 20°BTDC and asts for 0.00174 seconds. Combustion starts at 10°BTDC and ends at 35 °ATDC. Calculate: 1. The ignition delay in crank angle degrees and in seconds 2. The duration of fuel injection in crank angle degrees of engine rotation 3. Crank angle degree with respect to TDC when the fuel injection stops 4. The burn angle or combustion duration in seconds

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A diesel engine has a clearance volume of 35cc, displacement volume of 1000cc and the volume after combustion of 73cc. Calculate the theoretical thermal efficiency of the cycle.a. 69.0440% b. 69.0441% c. 69.0442% d. 69.0443%
An 8-cylinder, 4-stroke diesel engine has power output of 368 low at 800 rpm. The fuel consumption is 0.238 kg/kwh. The pressure in the cylinder at the beginning of injectionis 35 bar and max. pressure is 60 bar. The injector is adjusted at 210 bar and max. pressure at in the injector is 600 bar. Calculate orificarea required per injector if the injection takes place over 12° of crank rotation assume Cd = 0.6. p,=0.85.
Calculate the output power of a four cylinder, two stroke engine run at 2500 rpm. The specific fuel consumption is 0.005 Kg /KW minutes. The diameter of fuel orifice Is 0.8 mm and the specific gravity is 0.875 the fuel is injected at a pressure of 14000 KPa and the pressure in the combustion chamber is 3500 Kpa over a crank travel is 20 . Cofficient of velocity is 0.87. *
A diesel engine has a clearance volume of 35cc, displacement volume of 1000cc and the volume after combustion of 73cc. Calculate the theoretical thermal efficiency of the cycle.
The initial temperature and pressure of a 250 mm square Diesel engine is 1 bar and 310 K. If fuel injection takes place at a constant pressure for 5% of the stroke, determine: a) pressures and temperatures at all salient points, b) thermal efficiency, c) mean effective pressure, d) engine power for working cycle of 300 per minute. The compression ratio is 15.
Determine the diameter of a fuel orifice for a 4-stroke engine working on diesel cycle developing 18 kw per cylinder at 2000 rpm, using 0.27 kg/kw.h. of fuel of 30° API. The duration of the crank injection is 30° of crank travel. The fuel injection pressure is 125 bar and combustion chamber pressure is 35 bar. Take velocitycoefficient = 0.9 and Pr=141.5/(131.5 + API)
12. A diesel engine has a clearance volume of 35cc, displacement volume of 1000cc and the volume after combustion of 73cc. Calculate the theoretical thermal efficiency of the cycle. a. 69.0440% b. 69.0441% c. 69.0442% d. 69.0443%
The following data refers to a twin cylinder I.C. engine generating power in every revolution of the crank shaft. Total stroke volume: 2000cc, No. of cycles/second: 20, Mean effective pressure: 0.58 MPa., Fuel consumption: 8kg/hour, Calorific value of the fuel: [(X*1000)*0.8]kJ/Kg. Determine indicated thermal efficiency and brake thermal efficiency. The Mechanical efficiency is given by [100-X]%. If the mechanical efficiency is equal or lesser than 40% then use [120-X]%, where X= 36
A petrol engine has ignition lag(8%) and llame propagation (129) in terms of crank angle. If the engine speed is doubled from 1500 rpm to 3000 rpm. The total ignition period at 3000 rpm will be equal to of crank rotation.
In a six cylinder in-line two-stroke cycle Diesel engine, the cylinders are pitched 150 mm apart. The crank length is 100 mm and the ratio of connecting rod to crank is 4.5. The reciprocating mass per line is 1 kg. The engine speed is 2121 rpm. Two possible firing order for this engine are 1-5-3-6-2-4 and 1-4-5-2-3-6. As a young engineer, you have been tasked to evaluate the most suitable firing order for this engine. Your evaluation should include examination of the engine for balance of primary and secondary forces and couples for the given firing order. Apart from examining the engine, you need to justify why one firing order is superior to the other.
An automobile carburettor having its flost chamber vented to the atmosphere is tested. at sea level conditions in the factory without air cleaner. The main metering system of this carburettor is found to yield a fuel-air ratio of 0.065. The venturi throat pressure is 0.85 bar. The carburettor is now installed in an automobile and air cleaner is placed on the inlet to carburettor. The air flow rate with or without air filter is 230 kg/hr. The pressure drop through the filter is found to be 0.035 bar at sea level conditions. vesuming 7 and orifice coefficient to be constant calculate: The ventues throat pressure with air cleaner. (n) Air-fuel ratio with air cleaner.
A 4 stroke four cylinder engine is tested while running at 4000 rpm. The inlet air is at 25ºC and pressure is 750 mm of Hg. The piston displacement for each cylinder is 299cc. The A/F ratio is 15:1 and BSFC is 325 g/kWh. The dynamometer reading shows a power out of 80 hp. Assume the calorific value of the fuel as 43 MJ/kg. Find i) Volumetric Efficiency ii) Brake Thermal Efficiency iii) Total Fuel Consumption iv) Brake Mean effective Pressure