Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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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…
1.Calculate the maximum force that the vertical cylinder can generate during extension and retraction based on a system pressure of 500 psi.2.Calculate the speed of the vertical cylinder rod during extension based upon the observed flow rate.3.How does the calculated speed of the vertical cylinder based upon measured flow rate compare to your measurement of extension time over the stroke length? If different, then why?
A six-cylinder has a 127 mm stroke and a 107.9 mm bore. According to engine specifications, the compression ratio should be 15.5:1. While overhauling the engine, the mechanic inadvertently installs a head gasket that is 1 mm too thick. Calculate the compression ratio of the engine with the thicker head gasket installed.
Chapter 14 Solutions
Manufacturing Engineering & Technology
Ch. 14 - What is the difference between cold, warm, and hot...Ch. 14 - Explain the difference between open-die and...Ch. 14 - Explain the difference between fullering, edging,...Ch. 14 - What is flash? What is its function?Ch. 14 - Why is the intermediate shape of a part important...Ch. 14 - Describe the features of a typical forging die.Ch. 14 - Explain what is meant by load limited, energy...Ch. 14 - What type of parts can be produced by rotary...Ch. 14 - Why is hubbing an attractive alternative to...Ch. 14 - What is the difference between piercing and...
Ch. 14 - What is a hammer? What are the different kinds of...Ch. 14 - Why is there barreling in upsetting?Ch. 14 - What are the advantages and disadvantages of...Ch. 14 - Why are draft angles required in forging dies?Ch. 14 - Is a mandrel needed in swaging?Ch. 14 - Describe and explain the factors that influence...Ch. 14 - How can you tell whether a certain part is forged...Ch. 14 - Identify casting design rules, described in...Ch. 14 - Describe the factors involved in precision...Ch. 14 - Why is control of the volume of the blank...Ch. 14 - Why are there so many types of forging machines...Ch. 14 - What are the advantages and limitations of cogging...Ch. 14 - What are the advantages and limitations of using...Ch. 14 - Review Fig. 14.6e and explain why internal draft...Ch. 14 - Comment on your observations regarding the...Ch. 14 - Describe your observations concerning the control...Ch. 14 - Prob. 27QLPCh. 14 - Describe the difficulties involved in defining the...Ch. 14 - Describe the advantages of servo presses for...Ch. 14 - List the general recommendations you would make...Ch. 14 - Which would you recommend, (a) hot forging and...Ch. 14 - Take two solid, cylindrical specimens of equal...Ch. 14 - Calculate the room-temperature forging force for a...Ch. 14 - Using Eq. (14.2), estimate the forging force for...Ch. 14 - To what thickness can a solid cylinder of 1020...Ch. 14 - In Example 14.1, calculate the forging force,...Ch. 14 - Using Eq. (14.1), make a plot of the forging...Ch. 14 - How would you go about estimating the punch force...Ch. 14 - A mechanical press is powered by a 30-hp motor and...Ch. 14 - A solid cylindrical specimen, made of a perfectly...Ch. 14 - Devise an experimental method whereby you can...Ch. 14 - Assume that you represent the forging industry and...Ch. 14 - Figure P14.44 shows a round impression-die forging...Ch. 14 - Prob. 45SDPCh. 14 - Prob. 46SDPCh. 14 - Review the sequence of operations in the...Ch. 14 - Prob. 48SDPCh. 14 - Discuss the possible environmental concerns...Ch. 14 - List the advantages and disadvantages in using a...
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- - Sketch the principle of a hydraulic press. Explain the principle of the amplification of the force. - When the primary piston is moving for Ax, what is the distance the secondary piston Ax will move?arrow_forward1. A four stroke internal combustion engine has the following specifications: Brake power = 7.5 kW; Speed 1000 r.p.m.; Indicated mean effective pressure = 0.35 N/mm2;Maximum gas pressure = 3.5 N/mm2; Mechanical efficiency = 80 %. Determine: 1. The dimesions of the cylinder, if the length of stroke is 1.4 times the bore of the cylin- der; 2. Wall thickness of the cylinder, if the hoop stress is 35 MPa; 3. Thickness of the cylinder head and the size of studs when the permissible stresses for the cylinder head and stud materials are 45 MPa and 65 MPa respectively.arrow_forwardwhich of the following does Newton's first law of motion describe? O a. Inertia O b. Moment of Inertia O C. Work O d. Energy Ouestion 2 ntermine the acceleration and time taken by the rolling di: H Dlane angle =3°.arrow_forward
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- A circular shape blank will be cut of mm diameter from a strip of mm with a clearance value of 0.25 mm. Take the shear strength as 400 MPa. Determine The appropriate punch diameter.Blanking force.Blanking force when the blade angle A circular shape blank will be cut of mm diameter from a strip of mm with a clearance value of 0.25 mm. Take the shear strength as 400 MPa. Determine The appropriate punch diameter.Blanking force.Blanking force when the blade angle is o.arrow_forwardWrite the nature of work done by an elongated spring?arrow_forwardA hydraulic press is used to apply 500 lbs of force to press fit an assembly. The cylinder has a 2" piston and 1.5" rod, and a 16" stroke length. What flow rate (in gpm) is required to extend the press in 6 seconds?arrow_forward
- A punch press is to have a capacity of 8000 lb through a - inch stroke. for the efficiency and cost a small motor, a flywheel is used. what flywheel effect is required to maintain the flywheel within 20% of its no load speed of 600 rpm?arrow_forward.in a Machine used for hoisting a load the velocity ratio is 45,and it is found that a load of 180lb can be raised steadily by application of a force of 12 lb .Find the mechanical advantage, effect of friction and efficiency .Would there be any danger of reversal if force of 12 lb were removed?arrow_forward6. A cylinder with a 7-cm bore and 2.5-cm rod receives fluid at 40 1/min. What is the velocity of the cylinder rod extending and returning? 7. If the cylinder in Problem 6 has a stroke of 40 cm, what is the maximum cycle rate that might be achieved?arrow_forward
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