Design a plain carbon steel Centre crankshaft for a single acting four stroke single cylinder engine for the following data: Bore = 400 mm; Stroke = 600 mm; Engine speed = 200 r.p.m.; Mean effective pressure = 0.5 N/mm²; Maximum combustion pressure = 2.5 N/mm²; Weight of flywheel used as a pulley = 50 kN; Total belt pull = 6.5 kN. When the crank has turned through 35° from the top dead centre, the pressure on the piston is IN/mm² and the torque on the crank is maximum. The ratio of the connecting rod length to the crank radius is 5. Assume any other data required for the design.

Seatwork No. 1 An SI I-2 square engine operates on a 2-stroke cycle at 2400 rpm. The average piston speed is 15 m/se and the no. of piston action is 2. When the piston is at its maximum position the remainder volume is 0.005 Liters. Determine: a. Volumetric displacement per unit time for all cylinders (m³/sec) b. Compression ratio c. Volume at Bottom Dead Center (m³)

campute the bending stress number for the goer pair described by the given data beLow. KS= 1, Km= 1,21, F= 2.00 in, DP= 3,33 in, NG= 70, Np=20 hp = 1750v. p.m, Av=11, Pd =6, Tp= 900ib V1= 1527 ft/min The matarial used for pinion a gear is cast iron

A certain six cylinder engine has a 130.2 mm bore, a 127 mm stroke, and a clearance volume of 0.119 L in each cylinder;a.) Calculate the displacement in each cylinderb.) Calculate the compression ratio of the enginec.) Is the engine a diesel or an Otto cycle engine?

1. A 4-stroke, single-cylinder gasoline engine has 85-mm bore and 85-mm stroke. What is the piston displacement of the engine? If the engine has a 10-compression ratio, what is its clearance volume? What would be the total volume of the cylinder? 2. A four-stroke gasoline engine is running at a speed of 3,000 rpm. The piston diameter is 4 inches while the stroke is 4.5 inches. What is the speed of the piston? 3. A four-cylinder gas engine has 20-cm cylinder diameter and 40-cm stroke. The cylinders run at 150 rpm speed. The engine is a four-stroke cycle with 8 kg/cm² mean effective pressure. What is the area in cm2 and length of stroke of the engine piston in meter? Also, compute the power stroke per min per cylinder and the total power stroke of the 4 cylinders. Compute the indicated horsepower and the brake horsepower of the engine. And, what is the stroke-to-bore ratio of the engine? 4. Compute the specific fuel consumption of the 10 hp engine that drive a power tiller if it…

Q3/ A single cylinder four stroke cycle I.C. engine when tested, the following observations available: Area of indicator diagram = 3 sq.cm, Length of indicator diagram 4 cm, Spring constant = 10 bar/cm, Speed of engine = 400 rpm, Brake drum diameter = 120 cm, Dead weight on brake = 380 N, Spring balance reading 50 N, Fuel consumption = 2.8 kg/hr., Cv = 42000 kJ/kg, Cylinder diameter= 16 cm, Piston stroke = 20 cm. Find : (i) F.P, (ii) Mechanical efficiency, (iii) bsfc, and (iv) Brake thermal efficiency. %3D %3D %3D

A diesel engine four-stroke cycle with three cylinder has a cylinder bore of 90 mm and a stroke of 120 mm. The compression ratio is 16:1 and running at a speed of 2000 rpm. What is the clearance volume of the engine per cylinder?

6. The turning moment diagram for a four stroke gas engine may be assumed for simplicity to be repre- sented by four triangles, the areas of which from the line of zero pressure are as follows: Expansion stroke = 3550 mm²; exhaust stroke = 500 mm²; suction stroke = 350 mm²; and compres- sion stroke 1400 mm². Each mm² represents 3 N-m. Assuming the resisting moment to be uniform, find the mass of the rim of a flywheel required to keep the mean speed 200 r.p.m. within ± 2%. The mean radius of the rim may be taken as 0.75 m. Also determine the crank positions for the maximum and minimum speeds. [Ans. 983 kg; 4° and 176° from I. D. C]

in a four-stroke engine what is the ratio of cam to crank shaft revolutions ? What are some benefits of a hemispherical head shape?

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