GEOMETRIC TOLERANCE ANALYSIS OF CRANK DRIVE IN VERTICAL DIRECTION (REVERSE ENGINEERING OF DIESEL ENGINE)

• Main Author: SUDARMAJI (NIM : 23108302); Pembimbing : Dr.-Ing. Indra Djodikusumo, HERI
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15918
• Institution: Institut Teknologi Bandung

Along with the development of the age, the need for prime movers, especially diesel engines, are increasing. This situation drives small and medium industries to get involved in producing engines, especially diesel engines. Some SMEs (Small and Medium Enterprises/Industries) even had to design its own machine produced. However, this business is constrained by the lack of performance <br /> "uniformity" of the products that SMEs have produced. This problem arises because the designer not consider the assembly variation of the product as the result of the tolerance stack of engine components, as we knew that the machine consists of dozens or even hundreds of components made by manufacturing processes that fairly give variation. <br /> <br /> <br /> After a series of research on a single cylinder low speed diesel engine Kromhout and made three-dimensional models and analyze the model on previous studies, this thesis analyzes dimension tolerances and incorporate geometric variations to see the effect on assembly variation. <br /> <br /> <br /> Analysis of tolerance performed in two dimensions by using Direct Linearization Method (DLM). After going through the stages: determination of key characteristic, drawing the liaison diagram, modeling tolerance with the vector loop, determining the initial tolerance, calculate kinematic variation, incorporating geometric variation to the analysis, and optimization to meet the key characteristic <br /> <br /> <br /> specifications. Then, the appropriate components tolerances are obtained to meet the expected assembly variation. Furthermore, the results of this calculation are used to create detailed design of a single cylinder diesel engine.