Question

In: Mechanical Engineering

An in-line, six-cylinder, 6.6-liter, four-stroke cycle SI engine with multipoint port fuel injection operates át 3000...

An in-line, six-cylinder, 6.6-liter, four-stroke cycle SI engine with multipoint port fuel injection operates át 3000 RPM, with a volumetric efficiency of 89% and AF of 15:1. The engine has bore and stroke'related by S = 0.90 B. The engine has an exhaust pipe between engine and catalytic converter that can be approximated as a round pipe, 1.5 m long and 6.5 cm inside diameter. Exhaust temperature leaving the engine is 477°C, and the average wall temperature of the exhaust pipe is 227°C. Calculate the exhaust temperature entering catalytic converter [°C].

Solutions

Expert Solution


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...
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.
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]
Calculate air to fuel ratio by mass, for a four-cylinder SI engine running on i) gasoline...
Calculate air to fuel ratio by mass, for a four-cylinder SI engine running on i) gasoline and ii) a mixture of 20% methanol and 80% gasoline both at stoichiometric conditions. Assume gasoline is represented with C8H18 . Calculate any loss of power when gasoline-methanol mixture is used and discuss your results.
C4h10 fuel is burned in the cylinder with 150% corporate air powered by SI engine. The...
C4h10 fuel is burned in the cylinder with 150% corporate air powered by SI engine. The temperature and pressure at the start of combustion are 650 K and 1900 kPa, respectively. The exhaust temperature leaving the cylinder at the end of combustion is 1100K. So what is the Fuel / Air ratio (FA)? C = 12 H = 1 N = 14 O = 16
A two-cylinder, four-stroke gas engine has a bore of 380 mm and a stroke of 585...
A two-cylinder, four-stroke gas engine has a bore of 380 mm and a stroke of 585 mm. At 240 rev/min the torque developed is 11.86 kNm. If the engine is supplied with a mixture of gas and air in the proportion of 1 to 7 by volume. The estimated volumetric efficiency is 85% and the Qnet,p of the gas is 38.6 MJ/m3. Calculate the brake thermal efficiency of the engine.
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...
Discuss the difference between the ideal and the actual indicator diagrams of four stroke SI engine.
Discuss the difference between the ideal and the actual indicator diagrams of four stroke SI engine.
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...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT