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Nozzle Tester Teaching Tool to Enhance Learning Outcomes in Conventional Diesel Engine System for Light Vehicles

Journal of Vocational and Career Education · Vol. 10 No. 2 (2025) · pp. 124–128

DOI
10.15294/jvce.v10i2.31526
ISSN
2503-2305, 2339-0344
Published
2025-12-31
Publisher
Universitas Negeri Semarang
Language
eng

Abstract

The nozzle tester, which is commonly used in the automotive engineering program at SMK N 1 Kedungwuni, is in a leaking condition, limiting its effectiveness in supporting learning and consequently affecting student learning outcomes. This issue is the main reason for conducting research on the development of a nozzle tester using a recycled jack, aimed at enhancing the learning of conventional diesel engine systems. This study employs a Research and Development (R&D) approach with the ADDIE model for development. The research method used is a pretest-posttest group design. The findings of the study include: (1) the developed teaching tool was considered feasible by media and subject matter experts, with content validity ratio (CVR), content validity index (CVI), and percentage of agreement (PA) analyses; (2) product trials showed a high level of effectiveness, demonstrated by the Independent Sample t-Test, where the N Gain Score resulted in a significant (2-tailed) value; and (3) the reproducibility coefficient (Kr) and scalability coefficient (Ks) both indicate that the application of the nozzle tester in the conventional diesel engine system learning process is very practical. The conclusion of this study is that the nozzle tester can significantly improve the learning outcomes of conventional diesel engine systems.

Keywords

Collaboration network of the authors

40 authors · 117 co-authorship links · 1 across different organisations · showing the 40 most connected

Hover or tap a name to highlight its co-authors. Double-click to open the author's page.

  • State University of Semarang
  • Universitas Bhayangkara Surabaya
  • Universitas Stikubank
  • Affiliation unknown
  • Different organisations
  • Same organisation
  • Affiliation unknown
  • Thicker line = more joint articles · bigger circle = more articles
Show as table
Co-authorOrganisationJoint articles
Yeri SutopoAffiliation unknown8
Deni Fajar FitriyanaAffiliation unknown5
KriswantoAffiliation unknown3
Masrukan MasrukanState University of Semarang3
Eko SupraptonoAffiliation unknown3
Sri Endah WahyuningsihAffiliation unknown2
Januar Parlaungan SiregarAffiliation unknown2
WahyudiAffiliation unknown2
SukarniAffiliation unknown2
Adhi KusumastutiAffiliation unknown2
Hari WibawantoState University of Semarang2
Hendrix Noviyanto FirmansyahAffiliation unknown2
Widya AryadiAffiliation unknown2
Karnowo KarnowoAffiliation unknown2
Ulfah Mediaty AriefState University of Semarang2
Dwi WidjanarkoAffiliation unknown2
Haryono HaryonoUniversitas Bhayangkara Surabaya2
Rini KusumawardaniAffiliation unknown2
Amalia ShofiAffiliation unknown1
Agita Ainur RizqiyahAffiliation unknown1
Muhamad Reza Wahyu PrasetyoAffiliation unknown1
Ruben Bayu KristiawanAffiliation unknown1
Tegar Oki PrasdikaAffiliation unknown1
Imam Fitrah HadiAffiliation unknown1
Prastiyo prasAffiliation unknown1
Agus PrasetyoUniversitas Stikubank1
Risky IsmailAffiliation unknown1
A. P. BayusenoAffiliation unknown1
Muhammad AfrizalAffiliation unknown1
Al Ichlas ImranAffiliation unknown1
Janviter ManaluAffiliation unknown1
Achmad Erlangga Bintang SamodraAffiliation unknown1
Tezara CionitaAffiliation unknown1
Abram Puspa PramuditaAffiliation unknown1
Sonika Maulana HalimAffiliation unknown1
Sonika MaulanaAffiliation unknown1
Muhammad Ziddun Ni’amAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journal.unnes.ac.id/journals/jvce/oai, first harvested 6 Nov 2026, last seen 8 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en">Nozzle Tester Teaching Tool to Enhance Learning Outcomes in Conventional Diesel Engine System for Light Vehicles</dc:title>
	<dc:creator xml:lang="en">Hidayatulloh, Choirul Fatah</dc:creator>
	<dc:creator xml:lang="en">Khumaedi, Muhammad </dc:creator>
	<dc:creator xml:lang="en">Anis, Samsudin </dc:creator>
	<dc:subject xml:lang="en">Development, teaching aids, nozzle tester, light vehicle diesel engine system</dc:subject>
	<dc:description xml:lang="en">The nozzle tester, which is commonly used in the automotive engineering program at SMK N 1 Kedungwuni, is in a leaking condition, limiting its effectiveness in supporting learning and consequently affecting student learning outcomes. This issue is the main reason for conducting research on the development of a nozzle tester using a recycled jack, aimed at enhancing the learning of conventional diesel engine systems. This study employs a Research and Development (R&amp;amp;D) approach with the ADDIE model for development. The research method used is a pretest-posttest group design. The findings of the study include: (1) the developed teaching tool was considered feasible by media and subject matter experts, with content validity ratio (CVR), content validity index (CVI), and percentage of agreement (PA) analyses; (2) product trials showed a high level of effectiveness, demonstrated by the Independent Sample t-Test, where the N Gain Score resulted in a significant (2-tailed) value; and (3) the reproducibility coefficient (Kr) and scalability coefficient (Ks) both indicate that the application of the nozzle tester in the conventional diesel engine system learning process is very practical. The conclusion of this study is that the nozzle tester can significantly improve the learning outcomes of conventional diesel engine systems.</dc:description>
	<dc:publisher xml:lang="en">Universitas Negeri Semarang</dc:publisher>
	<dc:date>2025-12-31</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unnes.ac.id/journals/jvce/article/view/31526</dc:identifier>
	<dc:identifier>10.15294/jvce.v10i2.31526</dc:identifier>
	<dc:source xml:lang="en">Journal of Vocational and Career Education; Vol. 10 No. 2 (2025): December 2025; 124-128</dc:source>
	<dc:source>2503-2305</dc:source>
	<dc:source>2339-0344</dc:source>
	<dc:source>10.15294/jvce.v10i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.unnes.ac.id/journals/jvce/article/view/31526/5370</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2025 Journal of Vocational and Career Education</dc:rights>
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