Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 14, Problem 39QTP
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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…
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Explain the principle of the amplification of the force.
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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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- 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.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_forwardIn a hydraulic press machine the diameters of the effort and load pistons are respectively 25 cm and 100 cm. Find the distance moved by the load piston if 10 strokes are applied to the effort piston . Given : Stroke length of the effort piston is : 50 cm . Distance moved by Load piston : ____________marrow_forward
- 1. A double-acting cylinder with a piston diameter of 25mm and a piston rod diameter of 8mm has an operating pressure of 6 bar. Calculate the following: a. The theoretical piston forces (N) for forward stroke 274.637 264.365 294.524 b. The theoretical piston forces (N) for return stroke 294.524 264.365 284.637arrow_forwardSolve with me time 30 minutesarrow_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
- 1. 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_forwardQuestion Figure Q1 shows the schematic diagram of a moulding press, which is driven by a crank BC rotating anticlockwise at a constant angular velocity (@) of 100 rpm. C and O are fixed pivots and D is the mid-point of link AB. At this instant in time, the crank makes an angle (0) of 80° with the horizontal as shown. The angle ß is 4° to the vertical and the angle a is 19° to the horizontal as shown. (a) Determine the angular velocities of links OA and AB. (b) Consider the centre of mass of link AB to be at D (as shown in Figure Q1). Determine the absolute velocity of point D. (c) Determine the angular accelerations of links OA and AB. (d) Determine the absolute acceleration at point D (include its angle to the horizontal 8). A ↓a D BC = 50mm OA = 150mm AB = 300mm AD = 150mm Figure Q1. 4-Bar Linkage System Barrow_forwardPlease solve this question in hand writing step by step.arrow_forward
- Find the distance in (inches) of the shafts if the small cylinder is 88 inches in diameter. The two parallel shafts are connected in pure rolling contact, and turn in the same direction having a speed ratio of 2.75arrow_forwardA 150-mm-long, 10-mm-diameter, high-strength cast iron rod is being reduced in diameter to 8 mm by turning on a lathe. The spindle rotates at N = 500 rpm., and the tool is traveling at an axial speed of 200 mm/min.arrow_forwardI need the answer as soon as possiblearrow_forward
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