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A single-cylinder four-stroke-cycle spark-ignition engine has a BSFC of 0.4 kg/kW-hr and a volumetric efficiency of...
Consider a 4-cylinder, 4-stroke square engine running on octane, C8H18 (l) at an equivalence ratio of...
Consider a 4-cylinder, 4-stroke square engine running on octane,
C8H18 (l) at an equivalence ratio of 0.8. The volumetric efficiency
is measured as 90% at an ambient temperature and pressure of 25C
and 100 kPa, respectively. The engine produces 100 kW (brake) at
3000 rpm with a bsfc value of 290 g/kWh.
Consider a 4-cylinder, 4-stroke square engine running on octane, CH18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature...
Consider a 4-cylinder, 4-stroke square engine running on octane, CH18 (1) at an equivalence ratio of...
Consider a 4-cylinder, 4-stroke square engine running on octane, CH18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature and pressure of 25°C and 100 kPa, respectively. The engine produces 100 kW (brake) at 3000 rpm with a bsfc value of 290 g/kWh. a) What are the air and mass flow rates? b) What are the bore and stroke dimensions? c) Estimate the torque that this engine can produce at this...
Consider a 4-cylinder, 4-stroke square engine running on octane, C3H18 (1) at an equivalence ratio of...
Consider a 4-cylinder, 4-stroke square engine running on octane, C3H18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature and pressure of 25°C and 100 kPa, respectively. The engine produces 100 kW (brake) at 3000 rpm with a bsfc value of 290 g/kWh. a) What are the air and mass flow rates? b) What are the bore and stroke dimensions? c) Estimate the torque that this engine can produce at this...
QUESTION 1 (25%) Consider a 4-cylinder, 4-stroke square engine running on octane, C8H18 (1) at an...
QUESTION 1 (25%) Consider a 4-cylinder, 4-stroke square engine running on octane, C8H18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature and pressure of 25°C and 100 kPa, respectively. The engine produces 100 kW (brake) at 3000 rpm with a bsfc value of 290 g/kWh. a) What are the air and mass flow rates? b) What are the bore and stroke dimensions? c) Estimate the torque that this engine can...
QUESTION 1 (25%) Consider a 4-cylinder, 4-stroke square engine running on octane, C8H18 (1) at an...
QUESTION 1 (25%) Consider a 4-cylinder, 4-stroke square engine running on octane, C8H18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature and pressure of 25°C and 100 kPa, respectively. The engine produces 100 kW (brake) at 3000 rpm with a bsfc value of 290 g/kWh. a) What are the air and mass flow rates? b) What are the bore and stroke dimensions? c) Estimate the torque that this engine can...
A 4 stroke spark ignition engine gave the following results during a test. Number of cylinders...
A 4 stroke spark ignition engine gave the following results during a test. Number of cylinders 6 Bore of cylinders 90 mm Stroke 80 mm Speed 5000 rev/min Fuel consumption rate 0.3 dm/min Fuel density 750 kg/m Calorific value 44 MJ/kg Net brake load 180 N Torque arm 0.5 m Net indicated area 720 mm Base length of indicator diagram 60 mm Pressure scale 40 kPa/mm Calculate the following. The Brake Power. ii) The Mean effective Pressure. The Indicated Power....
Problem 6. Compute the brake mean effective pressure of a four-cylinder, two-stroke engine, 100 mm bore...
Problem 6. Compute the brake mean effective pressure of a four-cylinder, two-stroke engine, 100 mm bore 125 mm stroke when it develops a torque of 490 Nm. Problem = 7. Find the brake thermal efficiency of an engine which consumes 7 kg of fuel in 20 minutes and develops a brake power of 65kW. The fuel has heating value of 42000 kJ/kg. Problem # 8. Find the mean piston speed of a diesel engine running at 1500 rpm. The engine...
1. (30P) A twenty-cylinder MTU 4 STROKE 20V 4000 M93 marine diesel engine is designed to...
1. (30P) A twenty-cylinder MTU 4 STROKE 20V 4000 M93 marine diesel engine is designed to develop 3490 kW brake power at 1800 rpm. The bore is 170mm and stroke length is 210 mm for each cylinder and bsfc is 205 g/kWh. The calorific value of the petrol is 42 800kJ/kg. The inlet air manifold conditions are 80 kPa and 313 K. and The engine has a volumetric efficiency of 0.82. Calculate: a) Displacement (litre) b) Bmep (kPa) c) Fuel...
A 4-stroke 3 litre V6 spark ignition petrol engine has a maximum power output of 100kW...
A 4-stroke 3 litre V6 spark ignition petrol engine has a maximum power output of 100kW at 5500rev/min, and a maximum torque of 236Nm at 3000rev/min. The minimum sfc is 0.090 kg/MJ at 3000 rpm, and the air flow rate is 0.068m²/s. The compression ratio is 8.9:1 and the mechanical efficiency is 90%. The engine was tested under ambient conditions of 20°C and 1 bar. Take the calorific value of fuel to be 44MJ/kg. (a) Determine the power output at...
2. (Pts 30) A six cylinder, four stroke, spark ignition engine operating on the ideal Otto...
2. (Pts 30) A six cylinder, four stroke, spark ignition engine operating on the ideal Otto cycle takes in air at 1 atm and 18°C, and is limited to a maximum cycle temperature of 871°C. Each cylinder has a bore of 8.9 cm, and each piston has a stroke of 9.9 cm. The top dead center is 14 percent of the bottom dead center. Under these conditions, how much power will this engine produce when operated at 2500 rpm? Use...
Consider a 4-cylinder, 4-stroke square engine running on octane,
C8H18 (l) at an equivalence ratio of 0.8. The volumetric efficiency
is measured as 90% at an ambient temperature and pressure of 25C
and 100 kPa, respectively. The engine produces 100 kW (brake) at
3000 rpm with a bsfc value of 290 g/kWh.
Consider a 4-cylinder, 4-stroke square engine running on octane, CH18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature...
Consider a 4-cylinder, 4-stroke square engine running on octane, CH18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature and pressure of 25°C and 100 kPa, respectively. The engine produces 100 kW (brake) at 3000 rpm with a bsfc value of 290 g/kWh. a) What are the air and mass flow rates? b) What are the bore and stroke dimensions? c) Estimate the torque that this engine can produce at this...
Consider a 4-cylinder, 4-stroke square engine running on octane, C3H18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature and pressure of 25°C and 100 kPa, respectively. The engine produces 100 kW (brake) at 3000 rpm with a bsfc value of 290 g/kWh. a) What are the air and mass flow rates? b) What are the bore and stroke dimensions? c) Estimate the torque that this engine can produce at this...
QUESTION 1 (25%) Consider a 4-cylinder, 4-stroke square engine running on octane, C8H18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature and pressure of 25°C and 100 kPa, respectively. The engine produces 100 kW (brake) at 3000 rpm with a bsfc value of 290 g/kWh. a) What are the air and mass flow rates? b) What are the bore and stroke dimensions? c) Estimate the torque that this engine can...
QUESTION 1 (25%) Consider a 4-cylinder, 4-stroke square engine running on octane, C8H18 (1) at an equivalence ratio of 0.8. The volumetric efficiency is measured as 90% at an ambient temperature and pressure of 25°C and 100 kPa, respectively. The engine produces 100 kW (brake) at 3000 rpm with a bsfc value of 290 g/kWh. a) What are the air and mass flow rates? b) What are the bore and stroke dimensions? c) Estimate the torque that this engine can...
A 4 stroke spark ignition engine gave the following results during a test. Number of cylinders 6 Bore of cylinders 90 mm Stroke 80 mm Speed 5000 rev/min Fuel consumption rate 0.3 dm/min Fuel density 750 kg/m Calorific value 44 MJ/kg Net brake load 180 N Torque arm 0.5 m Net indicated area 720 mm Base length of indicator diagram 60 mm Pressure scale 40 kPa/mm Calculate the following. The Brake Power. ii) The Mean effective Pressure. The Indicated Power....
Problem 6. Compute the brake mean effective pressure of a four-cylinder, two-stroke engine, 100 mm bore 125 mm stroke when it develops a torque of 490 Nm. Problem = 7. Find the brake thermal efficiency of an engine which consumes 7 kg of fuel in 20 minutes and develops a brake power of 65kW. The fuel has heating value of 42000 kJ/kg. Problem # 8. Find the mean piston speed of a diesel engine running at 1500 rpm. The engine...
1. (30P) A twenty-cylinder MTU 4 STROKE 20V 4000 M93 marine diesel engine is designed to develop 3490 kW brake power at 1800 rpm. The bore is 170mm and stroke length is 210 mm for each cylinder and bsfc is 205 g/kWh. The calorific value of the petrol is 42 800kJ/kg. The inlet air manifold conditions are 80 kPa and 313 K. and The engine has a volumetric efficiency of 0.82. Calculate: a) Displacement (litre) b) Bmep (kPa) c) Fuel...
A 4-stroke 3 litre V6 spark ignition petrol engine has a maximum power output of 100kW at 5500rev/min, and a maximum torque of 236Nm at 3000rev/min. The minimum sfc is 0.090 kg/MJ at 3000 rpm, and the air flow rate is 0.068m²/s. The compression ratio is 8.9:1 and the mechanical efficiency is 90%. The engine was tested under ambient conditions of 20°C and 1 bar. Take the calorific value of fuel to be 44MJ/kg. (a) Determine the power output at...
2. (Pts 30) A six cylinder, four stroke, spark ignition engine operating on the ideal Otto cycle takes in air at 1 atm and 18°C, and is limited to a maximum cycle temperature of 871°C. Each cylinder has a bore of 8.9 cm, and each piston has a stroke of 9.9 cm. The top dead center is 14 percent of the bottom dead center. Under these conditions, how much power will this engine produce when operated at 2500 rpm? Use...
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