calculate the mean piston speed (in mph) for a Ford Raptor engine running at 5800 rpm with a bore of 94mm and a stroke of 93mm Calculate the average acceleration imparted on the piston as it moves from TDC to 90 degrees ATDC

Q2/ A six-cylinder, gasoline engine operates on the four-stroke cycle. The bore of each cylinder is 80 mm and the stroke is 100 mm. The clearance volume per cylinder is 70 cc. At the speed of 4100 rpm, the fuel consumption is 5.5 gm/sec (or 19.8 kg/hr.) and the torque developed is 160 Nm. Calculate: (1) Brake power, (ii) The brake mean effective pressure, (iii) Brake thermal efficiency if the calorific value of the fuel is 44000 kJ/kg and (iv) The relative efficiency on a brake power basis assuming the engine works on the constant volume cycle = 1.4 for air. thon tected the following observations available :

A power generator with two-cylinder, four-stroke gas engine has a bore of480 mm and a stroke of 585 mm. At 300 rev/min the torque developed is10 kNm. The generator is supplied with a mixture of gas and air in theproportion of 1 to 8 by volume. The estimated volumetric efficiency is 80% and the net calorific values of the fuel is 48.6 MJ/m3 Calculate:1 The brake power in kW2 the mean piston speed in m/s3 the break mean effective pressure in bar

A gasoline engine working on four-stroke develops a brake power of 20.9 kW. A Morse Test was conducted on this engine and the brake power (kW) obtained when each cylinder was made inoperative by short circuiting the spark plug are 14.9, 14.3, 14.8 and 14.5 respectively. The test was conducted at constant speed. Find the indicated power, mechanical efficiency and bmep when all the cylinders are firing. The bore of the engine is 75 mm and the stroke is 90 mm. The engine is running at 3000 rpm.

The following data are the results on a test of an Otto cycle engine: Torque= 1300N-m.  Indicated mean effective pressure= 800kpa,  Fuel consumption=0.004kg/sec Fuel heating value=43,816KJ/kg Bore and stroke= 30cm x 32cm Speed= 400rpm.  Calculate the brake mean effective pressure in kpa.

Determine the cylinder displacement and engine displacement of an enginehaving six cylinders with a bore of 400mm and a stroke of 160mm.

Determine the horsepower of a 6 cylinder 4 stroke continental engine having a bore equal to 3.875 in stroke of 4 in, and rpm of 2700 if it has a bmep of 150 lb/sq. in.

2- Diesel engine, six cylinders is tested at 4750 rpm, the pressure and temperature of the air entering the engine are 1.2bar, and 25 if the bore of cylinder is 80 mm and stroke 120 mm ,take air fuel ratio is 12:1, the specific fuel consumption is 0.52kg/kWh, and the brake power is equal 94 kW find the following: fuel consumption m'f = kg/ sec the air consumption engine capacity.: the flow rate of air intake to cylinder the Volumetric efficiency

Calculate the piston travel, velocity, and acceleration for an engine with R= 50 mm and Irod=170 mm using the equation and graphical representation and compare the results (take 450 increment ,N= 3000 r.p.m). jo 12:41

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