Basic Mechanical Engineering (3110006)

Internal Combustion Engines

BE | Semester 1 Unit : Internal Combustion Engines

Q3 (c) Summer-2020
A petrol engine with a stroke length of $200 mm$ and diameter of $150 mm$ has a clearance volume of $7 \times 10^{5} {mm}^{3}$ . If the indicted thermal efficiency is $0.30$ , find the relation efficiency. If the effective pressure is $5 bar$ and engine runs at $1000 rpm$ . Find the IP of the engine. Take $γ = 1.4$ .

Unit : Internal Combustion Engines

Q4 (c) Summer-2020 Discuss the construction and working of four stroke Petrol engine.

Unit : Internal Combustion Engines

Q4 (c) Winter-2019 The following readings were observed during a test on Two Stroke Single Cylinder Diesel engine:
Bore = 22 cm Stoke = 28 cm Speed = 350 rpm Net brake load = 65 kg Effective brake drum diameter = 100 cm Mean Effective Pressure = 3 bar Fuel consumption = 4 kg/h Calorific value of fuel = 43 MJ.
Calculate: (1) Indicated Power (2) Brake Power (3) Mechanical Efficiency (4) Brake thermal Efficiency

Unit : Internal Combustion Engines

Q4 (a) Winter-2019 Classify I.C. Engines.

Unit : Internal Combustion Engines

Q4 (b) Winter-2019 Determine the brake thermal efficiency of an engine with following data:
Brake Power = 80 kW, Fuel consumption rate = 20 kg / hour, Calorific value of the fuel = 43 MJ / kg.

Unit : Internal Combustion Engines

Q4 (c) Winter-2019 Discuss the construction and working of four stroke Petrol engines.

Unit : Internal Combustion Engines

Q4 (c) Summer-2019 A petrol engine with a stroke length of 200 mm and diameter of $150 mm$ has a clearance volume of $7 \times 10^{5} {mm}^{3}$ . If the indicted thermal efficiency is $0.30$ , find the relation efficiency. If the effective pressure is $5 bar$ and engine runs at $1000 rpm$ . Find the IP of the engine. Take $γ = 1.4$ $η_{rel} = \frac{0.30}{0.51} \times 100 %$ $η_{rel} = 58.82 %$ .

Unit : Internal Combustion Engines