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All Journal International Journal of Business, Management and Economics Dinamis
Prayoga, Yongki
Unknown Affiliation
Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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Effect of Intake Valve Gap Adjustment Variation on Fuel Consumption in Daewoo 4dwy-30 Diesel Motorcycle Eko Julianto; Fuazen; Prayoga, Yongki; Iwan, Muhammad; Gunarto; Sarwono, Eko; Yunus Nasution, Ahmad
DINAMIS Vol. 12 No. 1 (2024): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v12i1.16369

Abstract

The valve mechanism system on a 4 stroke diesel motor functions as an opening or closing mechanism which is used as a way for air to enter the combustion chamber or as an outlet for residual combustion gases from the combustion chamber. To maximize diesel engine performance, valve clearance adjustments need to be carried out periodically. This research aims to determine the effect of variations in intake valve gap adjustment on fuel consumption on the Daewoo 4 DWY-30 diesel motorbike. This research uses experimental methods and is quantitative research, namely presenting the results of experiments in the laboratory on test objects. The research results show that there is an influence of variations in intake valve gap adjustment on fuel consumption. The highest fuel consumption is at the intake valve gap setting of 0.20 mm, and the lowest fuel consumption is at the intake valve gap setting of 0.60 mm.
The Effect of Psychology, Organizational Culture and Motivation on Employee Performance: The Case of PT Bumi Andalas Permai Prayoga, Yongki; Idris, Muhammad; Trihandayani, Zaleha
International Journal of Business, Management and Economics Vol. 5 No. 3 (2024): International Journal of Business, Management and Economics
Publisher : Training & Research Institute - Jeramba Ilmu Sukses (TRI-JIS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47747/ijbme.v5i3.1932

Abstract

This research aims to determine the influence of psychological factors, organizational culture and motivation on employee performance at PT. Bumi Andalas Permai. This type of research is associative. The variables researchers use are psychological factors, organizational culture, work motivation and performance. The sample in this research was employees of PT. Bumi Andalas Permai is located in the Simpang Heran River - Beyuku II River Forest Group, OKI Regency, South Sumatra Province, with 117 people selected using cluster sampling. The data used in this research is primary data collected through a questionnaire. The data analysis technique used is Multiple Linear Regression. The results of this research show that (1) psychological factors, organizational culture, and motivation have a positive and significant effect on employee performance, (2) psychological factors have a positive and significant effect on employee performance, (3) organizational culture has a positive and significant effect on employee performance, (4) motivation has no significant effect on employee work motivation
Co-Authors Eko Julianto Fuazen Gunarto Iwan, Muhammad Muhammad Idris Sarwono, Eko Yunus Nasution, Ahmad Zaleha Trihandayani