A four-cylinder, four-stroke Diesel engine has a bore of 212 mm and a stroke of 292 mm. At full load while running at 720 rpm, the BMEP is 5.93 bar, and BSFC is 0.226 kg/kWh. The air-fuel ratio as determined by exhaust gas analysis is 25:1. For ambient conditions at 1.01 bar and 27 deg C and fuel heating value of 44 MJ/kg, calculate the volumetric efficiency of the engine.

A four-cylinder, four-stroke Diesel engine has a bore of 212 mm and a stroke of 292 mm. At full load while running at 720 rpm, the BMEP is 5.93 bar, and BSFC is 0.226 kg/kWh. The air-fuel ratio as determined by exhaust gas analysis is 25:1. For ambient conditions at 1.01 bar and 27 deg C and fuel heating value of 44 MJ/kg, calculate the volumetric efficiency of the engine.

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 four-cylinder, four-stroke internal combustion engine operates at 2800 RPM. The processes within each cylinder are modeled as an air-standard Otto cycle with a pressure of 14.7 lbf/in2, a temperature of 80°F, and a volume of 0.02 ft3 at the beginning of compression. The compression ratio is 11, and maximum pressure in the cycle is 1080 lbf/in2. Use a cold air-standard analysis with k = 1.4. Determine the power developed by the engine, in horsepower.
A four-cylinder, four-stroke internal combustion engine operates at 2800 RPM. The processes within each cylinder are modeled as an air-standard Otto cycle with a pressure of 14.7 lbf/in2, a temperature of 80°F, and a volume of 0.03 ft3 at the beginning of compression. The compression ratio is 11, and maximum pressure in the cycle is 1080 lbf/in2. Use a cold air-standard analysis with k = 1.4. Determine the power developed by the engine, in horsepower, and the mean effective pressure in lbf/in^2.
If the clearance volume of a single cylinder SI engine that operates on an air-standard cycle is 15cc and the bore and stroke of the engine is 6cm and 5cm respectively, Calculate the power that the engine can produce if the heat addition rate amounts to 13kW.a. 7.9100kW b. 7.9101kW c. 7.9102kW d. 7.9103kW
Evaluate the performance of 2 and 4 stroke diesel engines, pay particular attention to fuelconsumption, but do not ignore other parameters such as power and operating characteristics
What is the mechanical efficiency of a diesel engine if friction power is 30 KW and brake power of 150 KW?
4. A BMW with 4-stroke 2.0 L Twin Turbocharger 4-cylinder in-line engine is connected to an engine dynamometer which gives a torque reading of 350 Nm at 3800 rpm. The engine is running with volumetric efficiency of 118% and petrol RON95 (C7H₁7) is used as the combustion fuel. At the engine speed of 3800 rpm, the intake air pressure and temperature both are 155 kPa and 38°C. Given the gas constant value R-0.287 kJ/kgK. Calculate: a) Fuel mass flow rate of the engine. b) Brake specific fuel consumption of the engine at 3800 rpm in g/kW.hr.
1. There are supplied 317 kJ/cycle to an ideal Diesel engine operating on 227-g air; P1 = 97.91kPa, T1 = 48.9˚C. At the end of the compression, P2 = 3930 kPa. Determine: Determine the compression ratio (rk). Determine the cut-off ratio (rc). Determine the work (W) done by the system in kJ. Determine the thermal efficiency (η) of the system.
A four-stroke and four-cylinder diesel engine with a stroke volume of 4 liters 18/1It has an air fuel ratio and works according to a mixed cycle. The compression ratio of the engine is 16/1 andThe cylinder diameter is 10 cm. The pressure and temperature at the start of compression are 100 kPa and 60°. your fuelIts calorific value is 42500 kJ/kg. Half of the heat input to the cycle is at constant volume and the other half at constant volume.since it takes place under pressure;a) Calculate the pressure and temperature values at all points and present them in a tabular form.b) Find the thermal efficiency.
A turboshaft engine comprising a gas generator and a free power turbine is selected to provide propulsive power for a helicopter. The helicopter is hovering in ISA conditions at an altitude of 4100 feet. The following data applies to this engine at this static max power operating point. Intake mass flow: 8.9 kg/s Compressor pressure ratio: 24.5 Compressor isentropic efficiency: 88% Mechanical efficiency: (HP & PT shaft) 99% Combustion chamber pressure loss Combustion chamber inlet pressure 4% Combustion efficiency 98.8% Combustion chamber exit temperature: 1585K Gas generator turbine isentropic efficiency: 92% Power turbine isentropic efficiency: 90% The effects of the intake and exhaust ducts may be ignored. It may be assumed that for: Air: Cp = 1.005 kJ/kg • K, y = 1.4, R = 0.287 kJ/kg • K Combustion gases: Cp = 1.148kJ/kg • K, y = 1.333, R = 0.287 kJ/kg • K A 6% direct bleed of air from the exit of the compressor is…
A turboshaft engine comprising a gas generator and a free power turbine is selected to provide propulsive power for a helicopter. The helicopter is hovering in ISA conditions at an altitude of 4100 feet. The following data applies to this engine at this static max power operating point. Intake mass flow: 8.9 kg/s Compressor pressure ratio: 24.5 Compressor isentropic efficiency: 88% Mechanical efficiency: (HP & PT shaft) 99% Combustion chamber pressure loss Combustion chamber inlet pressure 4% Combustion efficiency 98.8% Combustion chamber exit temperature: 1585K Gas generator turbine isentropic efficiency: 92% Power turbine isentropic efficiency: 90% The effects of the intake and exhaust ducts may be ignored. It may be assumed that for: Air: Cp = 1.005 kJ/kg • K, y = 1.4, R = 0.287 kJ/kg • K Combustion gases: Cp = 1.148kJ/kg • K, y = 1.333, R = 0.287 kJ/kg • K A 6% direct bleed of air from the exit of the compressor is…
A spark- ignition engine operates on an Otto cycle with a compression ratio of 9 and a temperature limits of 30°C and 1000°C. If the power input is 500 kw, calculate the mass flow rate of air.
How is the rpm (revolutions per minute) of an actual four-stroke gasoline engine related to the number of thermodynamic cycles? What would your answer be for a two-stroke engine?