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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Humanism : Jurnal Pengabdian Masyarakat Automotive Experiences
Ariani, Betty
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Religion Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Mechanical Engineering Public Health

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Experimental Analysis of the Influence of a Compressed Natural Gas (CNG) - Air Mixer on Performance and Emissions in Partial Load CNG-Diesel Dual Fuel Engines Ariani, Betty; Felayati, Frengki Mohamad; Batutah, Moh. Arif
Automotive Experiences Vol 7 No 2 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.11195

Abstract

The energy crisis and the threat of global climate change have spurred various research efforts and alternative initiatives to find substitutes for fossil fuels, improve energy efficiency, and reduce emissions, especially greenhouse gases. The shipping industry is one of the contributors to global emissions that has received particular attention due to the increasing demand for maritime transportation services. The use of natural gas is considered a potential solution due to its relatively clean nature, abundant availability, and competitive pricing. The CNG-Diesel Dual Fuel Engine design is developed with the principle of using natural gas as an alternative fuel without replacing the existing diesel engine. Minimal modifications are made to the intake manifold to accommodate CNG entry. Despite its advantages, the development of dual fuel engines faces challenges, such as increased methane emissions due to the potential for incomplete combustion. This research conducts experimental studies on the use of a Venturi-like mixer in the intake manifold to enhance the homogeneity of the CNG-air mixture before entering the combustion chamber. Testing the mixer's influence is carried out under various CNG injection durations at low and high engine loads at constant speeds. The results indicate that the addition of the mixer does not immediately improve combustion quality or reduce emissions. Attention to conditioning the homogenous mixture at the required air-fuel ratio before entering the combustion chamber is crucial. The selection of the appropriate mixer design, diameter size, and placement of holes needs careful consideration
Experimental Investigation of Oxy-Hydrogen Injection in Natural Gas/Diesel Dual-Fuel Engine: Performance and Emission Analysis under Low Load Operation Ariani, Betty; Felayati, Frengki Mohamad; Batutah, Mohammad Arif
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 21, No 1 (2024): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v21i1.61692

Abstract

The pursuit of achieving zero carbon emissions by 2050 has led to the implementation of green technologies in the maritime industry. One crucial aspect is the adoption of alternative fuels, with a focus on non-fossil fuels to enhance energy efficiency and minimize emissions during ship operations. This study explores the innovative dual fuel diesel – Compressed Natural Gas (CNG) technology, which offers relatively low emissions with uncomplicated modifications to the diesel engine. CNG is injected into the intake manifold, addressing the need for cleaner fuel options. However, the evolution of this technology has encountered challenges such as methane slip resulting from incomplete combustion. This research proposes an intervention using hydrogen within the combustion chamber to improve combustion quality. Oxy-hydrogen gas (HHO), a carbon-free fuel derived from water through electrolysis, is considered as a potential solution. The utilization of HHO serves as a substitute for pure H2 due to its more feasible production and application, considering the global limitations in hydrogen storage and usage in transportation. The study aims to investigate the impact of HHO on the performance and emissions of dual fuel engines. Experimental tests are conducted under low loads to simulate critical operational points of the engine. Results indicate that the dual fuel system exhibits significant fuel savings, particularly with increasing injection duration. However, the need for additional oxygen to enhance combustion perfection must be balanced. HHO injection demonstrates the potential to improve engine performance, leveraging the oxygen content in HHO and the positive characteristics of hydrogen with its high Lower Heating Value (LHV). Furthermore, the research suggests that HHO injection can mitigate methane slip issues associated with dual fuel engine operations, offering a promising avenue for emission reduction
Inovasi Produk Selai Pisang Dan Sambal Ontong Untuk Peningkatan Potensi Ekonomi Desa Ngimbang Kecamatan Palang Kabupaten Tuban Ariani, Betty; Huda, Fatkur; Nasrullah, Dede; Eka Putri, Dheyani; Dewi, Wahyu Surya kartika
Humanism : Jurnal Pengabdian Masyarakat Vol 5 No 1 (2024): April
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/hm.v5i1.20758

Abstract

Abstrak Desa Ngimbang yang terletak di kecamatan Palang, kabupaten Tuban ini terkenal memiliki sumber daya alam buah pisang yang cukup melimpah. Namun, masih kurangnya pemanfaatan dan pengolahan buah pisang dan jantung pisang menjadi produk yang bernilai ekonomi tinggi. Sebagian besar petani di desa Ngimbang masih menjual pisang secara mentah atau sebagai buah. Selain itu bagi UMKM permasalahan yang ada salah satunya terkait pengurusan legalitas izin berusaha. Kelompok tim pengabdian membuat program pemberdayaan masyarakat dan UMKM di Desa Ngimbang agar dapat meningkatkan nilai ekonomi dengan cara membuat inovasi produk berbasis pisang dan membantu dalam membuat nomor induk berusaha.Metode dan tahapan yang dilakukan dalam pengabdian ini dimulai dari tahap observasi potensi dan permasalahan, diskusi tentang inovasi produk yang dibuat berupa selai pisang dan sambal ontong, pembuatan resep yang spesifikdan khas, desain kemasan produk, serta penyuluhan strategi pemasaran. Proses dan tahapan pengabdian ini dilakukan dalam kurun waktu 3 bulan. Adapun hasil yang didapatkan adalah tersedianya produk selai pisang dan sambal ontong sebagai produk khas desa Ngimbang, terdapatnya UMKM kelompok ibu – ibu yang meneruskan produksi dan kemampuan pemasaran melalui e commerce. Hal ini diharapkan membantu masyarakat desa dan UMKM di desa Ngimbang agar dapat meningkatkan nilai tambah dan daya saing produk hasil pertanian mereka menjadi lebih tinggi untuk menunjang kesejahteraan warga desa
Co-Authors Batutah, Moh. Arif Batutah, Mohammad Arif Dede Nasrullah Dewi, Wahyu Surya kartika Eka Putri, Dheyani Frengki Mohamad Felayati, Frengki Mohamad Huda, Fatkur