2 - A 6 cylinder petrol engine operates on the 4-stroke cycle (Otto cycle), cylinder bore (70mm), and piston stroke (100 mm). The clearance volume per cylinder is (67 cm³). At a speed of(3960 rpm) the fuel consumption is (19.5 kg/hr) and the torque developed is ((140 Nm). Thecalorific value of fuel is 43884kj/kg Calculate:i- brake powerii – bmepiii – brake thermal eff.iv – relative eff. On brake power basis[answer: 58 kW , 7.61x105, 24.4%, 45.7%] 6 – The brake power of a single cylinder engine is defined by the relationBP = 9.75 (N/1000)3Where (N) is the engine speed in (rpm), the bore and stroke are (80 , 130) mm respectively. Ifthe engine speed is (1200) rpm, and the mechanical efficiency is (80%), (3.2) kg of fuel of CV(43500 kJ/kg) is consumed during (30 min) Calculate:i- Brake powerii- Brake thermal eff.iii-imepiv- [answer: 16.84 kw , 21.77%, 32.24bar]

Note:- As per the guidelines of bartleby only one question is allowed to be done so, please…

2 - A 6 cylinder petrol engine operates on the 4-stroke cycle (Otto cycle), cylinder bore (70 mm), and piston stroke (100 mm). The clearance volume per cylinder is (67 cm³). At a speed of (3960 rpm) the fuel consumption is (19.5 kg/hr) and the torque developed is ((140 Nm). The calorific value of fuel is 43884kj/kg Calculate: i – brake power ii – bmep iii – brake thermal eff. iv – relative eff. On brake power basis - [answer: 58 kW ,7.61x10°, 24.4%, 45.7%]

2 - A 6 cylinder petrol engine operates on the 4-stroke cycle (Otto cycle), cylinder bore (70 mm), and piston stroke (100 mm). The clearance volume per cylinder is (67 cm³). At a speed of (3960 rpm) the fuel consumption is (19.5 kg/hr) and the torque developed is ((140 Nm). The calorific value of fuel is 43884kj/kg Calculate: i – brake power ii – bmep iii – brake thermal eff. iv – relative eff. On brake power basis - [answer: 58 kW ,7.61x10°, 24.4%, 45.7%]

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

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Fluid Dynamics

The study of the flow of gases and liquids, usually in and around solid surfaces, is known as fluid dynamics in physics and engineering. Fluid dynamics, for example, can be used to evaluate the movement of air through an airplane wing or the surface of a vehicle. It can also be used in ship design to increase the speed at which ships pass through water.

Question

2 - A 6 cylinder petrol engine operates on the 4-stroke cycle (Otto cycle), cylinder bore (70
mm), and piston stroke (100 mm). The clearance volume per cylinder is (67 cm³). At a speed of
(3960 rpm) the fuel consumption is (19.5 kg/hr) and the torque developed is ((140 Nm). The
calorific value of fuel is 43884kj/kg Calculate:
i- brake power
ii – bmep
iii – brake thermal eff.
iv – relative eff. On brake power basis
[answer: 58 kW , 7.61x105, 24.4%, 45.7%]

6 – The brake power of a single cylinder engine is defined by the relation
BP = 9.75 (N/1000)3
Where (N) is the engine speed in (rpm), the bore and stroke are (80 , 130) mm respectively. If
the engine speed is (1200) rpm, and the mechanical efficiency is (80%), (3.2) kg of fuel of CV
(43500 kJ/kg) is consumed during (30 min) Calculate:
i- Brake power
ii- Brake thermal eff.
iii-imep
iv- [answer: 16.84 kw , 21.77%, 32.24bar]

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