Web Optimization of Compression Ignition Aviation Engine Crankshaft

<div class="section abstract"><div class="htmlview paragraph">In crank- train system, the prime objective of crankshaft is to facilitate the transformation of reciprocating motion of connecting rod into rotational motion at flywheel end. Moreover, the contribution of mass from crankshaft is in the same order as of flywheel assembly mass which accounts to approximately 40% to 50% of total mass of engine. Therefore, to accomplish the development of an efficient engine it is vital to optimize the crankshaft based on simulation parameters like balance rate, mass, torsional frequency, web shear stress etc. In the given work, crankshaft has been designed and developed for an engine used in light duty commercial vehicle. The defined work demonstrates the application of 1D simulation tool AVL Excite in development phase of the engine. To establish equilibrium between the weight and simulation guidelines, many iterations of models were evaluated and finally we were able to achieve mass reduction of nearly 8% from the base model. Thenceforth, validation of the entire system was executed for bearing, torsional and strength parameters first in AVL Excite and then in engine test bed. The validation phase is under progress and initial trials are showing no issues, in parallel fatigue test is planned for further design validation.</div><div class="htmlview paragraph">Additionally, as an initiative we have considered hollow crankshaft technology concept for better reduction in weight of crankshaft. Soft simulation has been completed and further process of part development is in progress, the work highlights in detail and necessary reference used for developing the concept.</div></div>

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Selection of Crankshaft Manufacturing Material by the PIV Method

Nguyen,

Hieu,

Thang

et al. 2024

Eng. Technol. Appl. Sci. Res.

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The type of material employed in crankshaft production has a great influence on the performance, durability, and product lifespan. There are many types of material that can be used to manufacture crankshafts, but choosing the best one is a complicated work. This study is carried out to select the best material type among four commonly deployed types, including 1080 steel, 18CrMo4 steel, 4130 steel, and S48C steel. Fifteen parameters (criteria) were chosen to describe each material. The weights of the criteria were determined by three methods, including the Mean weight method, the Entropy weight method, and the MEREC (Method based on the Removal Effects of Criteria) weight method. To rank the steel types, the PIV (Proximity Indexed Value) method was adopted, and it was demonstrated that the ranks did not depend on the weighting method followed. S48C is the best choice among the four types of steel generally utilized for crankshaft production.

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Web Optimization of Compression Ignition Aviation Engine Crankshaft

Cited by 3 publications

References 13 publications

Advanced combustion in heavy fuel aircraft piston engines: A comprehensive review and future directions

Advanced combustion in heavy fuel aircraft piston engines: A comprehensive review and future directions

Design Development and Weight Optimization of Crankshaft for Commercial Vehicle Application

Selection of Crankshaft Manufacturing Material by the PIV Method

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