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Shaft Design
Published in Wei Tong, Mechanical Design and Manufacturing of Electric Motors, 2022
Cast iron is a large family of ferrous alloys in which four types can be categorized: gray cast iron, ductile iron, white iron, and metallurgic iron. Cast iron has been widely used to make crankshafts in internal combustion engines. Crankshafts convert the reciprocating motion into rotation by crankpins. One of the main reasons to use cast iron is that it has excellent vibration damping properties to reduce the pulsation influence of the four-stroke cycle. In addition, cast iron exhibits low notch sensitivity, low modulus of elasticity, high thermal conductivity, moderate resistance of thermal shock, and outstanding castability. It is interesting to note that unlike most ferrous materials, shear strength of gray cast iron is much higher than ultimate tensile strength, indicating that gray cast iron can withstand higher shear forces than tensile forces. However, until now, it is still rare to use cast iron as the shaft material in electric motors.
Vehicular Engines
Published in G. K. Awari, V. S. Kumbhar, R. B. Tirpude, Automotive Systems, 2021
G. K. Awari, V. S. Kumbhar, R. B. Tirpude
The crankshaft is an important part of the engine, which converts the reciprocating motion of the piston into a rotary motion. One end of the crankshaft is called the flywheel end while the other is the gear end. It consists of the following parts: Crank webMain journalPin journalGear endFlywheel end
Compressor Types
Published in Tony Giampaolo, Compressor Handbook, 2020
The crankshaft, typically made of forged steel, consists of crankpins and bearing journals (Figure 3-17). While small crankshafts have been machined from a single forging, most crankshafts are fabricated from three parts: bearing journals, crankpins and interconnection pieces.
Optimization of tank engine crank shaft material properties
Published in Mechanics Based Design of Structures and Machines, 2023
Abdel-Salam G. Abdel-Salam, Ayesha Sohail, Lubna Sherin, Qurat Ul Ain Azim, Ayesha Faisal, Mohamed Abdelsabour Fahmy, Zhiwu Li
The structural mechanics of machines is of great importance Pantokratoras (2020), Ghazanfari et al. (2020), Kaveh and Ghazaan (2017), Najafzadeh et al. (2020), Temel and Noori (2019). The internal combustion engine of a tank works on the principle of ignition and burning of fuel and then converting the energy from combustion to work. The crankshaft, along with a connecting rod and piston constitute cranking mechanism is an internal combustion engine. The function of the crankshaft is to convert the sliding motion of the piston into rotary motion. Since most industrial mechanisms and processes make more efficient use of rotary motions rather than displacements, the function of crankshaft becomes very vital. Moreover, the combustion inside the engine produces sudden shocks due to which the crankshaft experiences fatigue in addition to heavy load cycles. This requires the materials used in the crankshaft to be durable, of minimal weight with maximum fatigues strength, and cost efficient.
Fault feature and diagnostic method of bending micro- deformation of crankshaft of piston engine
Published in Nondestructive Testing and Evaluation, 2020
Zhilong Gao, Hanjiang Song, Yongdan Chen, Jinjie Zhang, Zhinong Jiang
Due to their good dynamic characteristics and wide range of output power, piston engines have wide applications in the fields of rail transportation, petroleum and petrochemical industries, metallurgical mining, ship propulsion and so on. The crankshaft is a core component of the engine that transforms the reciprocating linear motion of the piston into rotary motion and outputs torque. The crankshaft is also an important symbol of the reliability and service life of the engine. Once the crankshaft is deformed, it can cause serious damage to the entire unit and even risk personal safety.