Question

In: Mechanical Engineering

The 12 cylinder 2 stroke cycle compression ignition engine of an oil tanker is operating at...

The 12 cylinder 2 stroke cycle compression ignition engine of an oil tanker is operating at 150 rpm The brake mean effective pressure of the engine is 400 kPa and the excess air coefficient is 2. The crankshaft of the engine is directly coupled to a propeller and a torque of 1500 kN-m is applied. The engine operates on light fuel oil which can be approximated as C12H26. If the brake specific fuel consumption is 200 g/hp-h what is the volumetric efficiency of the engine ?

Solutions

Expert Solution

samet mamat answered 2 years ago
Next > < Previous

Related Solutions

A single-cylinder, four stroke research engine operates on Otto cycle. The specification of the engine is...
A single-cylinder, four stroke research engine operates on Otto cycle. The specification of the engine is shown as below:- Displacement volume of the cylinder = 540 cm3 Clearance volume of the cylinder = 60 cm3 Minimum temperature = 200°C Minimum pressure = 200 kPa Net work output = 1000 kJ/kg Sketch the process on a P-V diagram and by using constant specific heat at room temperature, determine: i) the temperature and pressure at each process, ii) the thermal efficiency of...
A single-cylinder, four stroke research engine operates on Otto cycle. The specification of the engine is...
A single-cylinder, four stroke research engine operates on Otto cycle. The specification of the engine is shown as below:- Displacement volume of the cylinder = 560 cm3 Clearance volume of cylinder = 70 cm3 Minimum temperature = 200°C Minimum pressure = 200 kPa Net work output = 1000 kJ/kg Sketch the process on a P-V diagram and by using constant specific heat at room temperature, determine: 1) the temperature and pressure at each process, 2) the thermal efficiency of the...
A four-cylinder four-stroke engine is operating at a bmep of 2 bar. The pressure at inlet...
A four-cylinder four-stroke engine is operating at a bmep of 2 bar. The pressure at inlet valve closure is 0.37 bar, and the fmep is 0.8 bar. Assuming that the engine gross indicated efficiency is unchanged, verify that disablement of the valves on two cylinders would reduce the fuel consumption by about 13 per cent compared with about an 8 per cent fuel saving if the fuel was not supplied to two cylinders. Assume that the gross imep is proportional...
A 2-stroke motor cycle petrol engine cylinder consists of 15 fins. If the outside and inside...
A 2-stroke motor cycle petrol engine cylinder consists of 15 fins. If the outside and inside diameter of each fin are 200 mm and 100 mm respectively, the average fin surface temperature is 475 c and atmospheric air temperature is 25 c calculate the heat transfer rate from the fins when the motor cycle is stationary.Assume all the fins in a horizontal position.
1. An aluminum air-cooled engine cylinder head for a single cylinder, 2-stroke engine is to be...
1. An aluminum air-cooled engine cylinder head for a single cylinder, 2-stroke engine is to be die-cast. The overall diameter of the cylinder head is 101.6 mm. If the projected plan area of the runners and gating system is 100 mm2 and the casting pressure is 10 MPa (1500 psi), what minimum locking force is required for the die-casting machine in kN.
Design a four stroke cycle for SI engine using crankcase compression. Draw schematics of the six...
Design a four stroke cycle for SI engine using crankcase compression. Draw schematics of the six basic process: intake, compression, combustion, expansion, blowdown and exhaust. Describe fully the intake of air, fuel and oil.
Ai inventor proposes a four -stroke cycle running on helium. The engine has a compression ratio...
Ai inventor proposes a four -stroke cycle running on helium. The engine has a compression ratio of 8 and maximum operating temperature of 1,500 K. The atmospheric conditions are temperature of 300 K and pressure of 100 kPa. The processes can be approximated as below: 1- 2 isentropic compression 2- 3 constant volume heat addition 3- 4 isentropic expansion 4- 1 constant pressure heat removal a. Plot P-v and T-s diagrams for this cycle. b. Determine state conditions at the...
A 5-cylinder square engine with a total stroke volume of 3.5 liters, operating according to a...
A 5-cylinder square engine with a total stroke volume of 3.5 liters, operating according to a 4-stroke cycle, operates at 2500 rpm. Since the mechanical efficiency of the engine is 62% and the Indicative work produced for each cylinder is 1 kJ, find the specific power of the engine in kW / cm2.
Problem 1: A 5.2-liter, spark-ignition, four-stroke cycle, V6 automobile engine operates at 2400 RPM with ?...
Problem 1: A 5.2-liter, spark-ignition, four-stroke cycle, V6 automobile engine operates at 2400 RPM with ? = 1.5. The engine has a volumetric efficiency of 89%, with bore as B = 2.1 S. The density of air at room temperature is 1.18 kg/m3. Lamda = 1.5 Calculate: Stroke length (m and cm) Average piston speed (m/sec) Mass flow rate of air into engine [kg/sec] Mass flow rate of fuel into engine [kg/sec]
A CI engine operating on the air standard diesel cycle has cylinder condtioons at the start...
A CI engine operating on the air standard diesel cycle has cylinder condtioons at the start of compression of 65 degrees C and 130 kPa. light diesel fuel is used at an equivalence ratio of 0.8 with a combustion efficiency of 0.98. compression ratio = 18 Calculate: temperature and pressure in each state of the cycle (0c) pressure at each state of the cycle (kpa) cutoff ratio indicated thermal efficiency (%) heat lost in exhaust (KJ/Kg)
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT