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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) · hlm. 124–128

DOI
10.15294/jvce.v10i2.31526
ISSN
2503-2305, 2339-0344
Terbit
2025-12-31
Penerbit
Universitas Negeri Semarang
Bahasa
eng

Abstrak

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.

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  • State University of Semarang
  • Universitas Bhayangkara Surabaya
  • Universitas Stikubank
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Yeri SutopoAfiliasi tidak diketahui8
Deni Fajar FitriyanaAfiliasi tidak diketahui5
KriswantoAfiliasi tidak diketahui3
Masrukan MasrukanState University of Semarang3
Eko SupraptonoAfiliasi tidak diketahui3
Sri Endah WahyuningsihAfiliasi tidak diketahui2
Januar Parlaungan SiregarAfiliasi tidak diketahui2
WahyudiAfiliasi tidak diketahui2
SukarniAfiliasi tidak diketahui2
Adhi KusumastutiAfiliasi tidak diketahui2
Hari WibawantoState University of Semarang2
Hendrix Noviyanto FirmansyahAfiliasi tidak diketahui2
Widya AryadiAfiliasi tidak diketahui2
Karnowo KarnowoAfiliasi tidak diketahui2
Ulfah Mediaty AriefState University of Semarang2
Dwi WidjanarkoAfiliasi tidak diketahui2
Haryono HaryonoUniversitas Bhayangkara Surabaya2
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Amalia ShofiAfiliasi tidak diketahui1
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Agus PrasetyoUniversitas Stikubank1
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Sumber metadata: OAI-PMH (metadata jurnal) https://journal.unnes.ac.id/journals/jvce/oai, pertama di-harvest 6 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (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>
</oai_dc:dc>