Development of a performance assessment for diesel engine common rail fuel system maintenance

Abstract

This research is motivated by the need for performance assessments for the maintenance of common rail fuel systems of diesel motors. This research aims to develop a performance assessment on the maintenance of the Diesel engine common rail fuel system. Diesel vehicle technology has the novelty of its fuel system. Practical learning in the Diesel Motor Technology course has no performance assessment for the maintenance of the diesel motor common rail fuel system. The impact cannot measure or assess the achievement of skills possessed by students in the maintenance of common rail diesel fuel systems This study uses the research and development method with the 4-D development model from Thiagarajan. The 4-D model includes the stages of Define, Design, Development and Disseminate. The 4-D model research design is detailed and systematic with the theoretical basis of educational product design so as to obtain products that have feasibility standards, besides that the 4-D research model must go through product effectiveness testing from an expert before dissemination. Research subjects in testing or validation were carried out by 5 experts, namely 2 lecturers and 2 teachers and 1 certified expert technician. Data collection using performance tests to determine the validity of the content carried out on 40 sub-indicator items there are 10 revised sub-indicators on 3 indicators. data analysis using Content Validity Ratio and Content Validty Index with some suggestions and revisions which then each item has a CVR value, Based on the results of the positive CVI value, the assessment instrument is declared valid. The disseminate stage to 30 students was carried out to get user responses and generate a positive responses.