A study experiment of auto idle application in the excavator engine performance

Purwanto, Wawan; Maksum, Hasan; Putra, Dwi Sudarno; Azmi, M.Irwan M.; Wahyudi, Retno

doi:10.1063/1.4943485

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…Finally, the pressure increase and ambient temperature cause the liquid spray phase to be shorter and thinner [17]. It caused by the increase in momentum and heat transfer from the droplets to the ambient air [24].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Waste Cooking Oil Biodiesel to the Diesel Engine Performance

Maksum¹,

Purwanto²,

Pulungan³

2019

GEOMATE

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The non-renewable fossil energy and petroleum are the core of the energy source of the vehicles whose availability increasingly limited. The issues of the energy crisis and environmental pollution as the effects of the emission products of the burning fossil oil have become the global main problems. This study was conducted experimentally method, starting from the fuel characterizations, combustion process, engine emission, and engine performance. The fuel characterizations are based on Indonesia's national standardization for the used waste cooking oil biodiesel fuel. The characterizations of the combustion, the performance and the engine emissions were undertaken by adjusting the degrees of the injection time, namely, advanced and retarded by 3 0 and 6 0 CA (Crank Angle) respectively. The results indicated that use of 100% cooking oil biodiesel reduce the duration of ignition delay until 4 degrees, the duration of premixed combustion is up to 2 degrees, the total heat release is up to 26%, the amount of soot emissions is up to 30% and the increase of the duration of diffusion combustion is 3 degree compared with the fossil diesel. The measurement of the engine performance indicated that the addition of the percentage of the cooking oil biodiesel into the mixture decreases on performance (torque, power, Bmep and thermal efficiency) of 1 -4% for each 25% increase in used cooking oil biodiesel on the mixture and the Bsfc increase 3-5% for each 25% increase in used cooking oil biodiesel on the mixture. The measurement of the engine emissions designated that the addition of the percentage of cooking oil biodiesel into the mixture of a resulted in the reduction of the soot particle emission of 4-6% for each 25% increase in the used cooking oil biodiesel. The results of the visualization of the deposit of the used waste cooking oil biodiesel are greater than the fossil diesel. The changes in the degree of the injection time both retarded and advanced 3 0 CA provided significant changes to the characterization of the combustion.

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Section: Introductionmentioning

confidence: 99%

The Effect of Waste Cooking Oil Biodiesel to the Diesel Engine Performance

Maksum¹,

Purwanto²,

Pulungan³

2019

GEOMATE

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“…bertujuan untuk melihat kualitas sistem apakah sudah sesuai dengan kebutuhan pengguna yaitu bendahara di PONPES darussalam. Pengujian ini juga dilakukan untuk mendapatkan tanggapan dari pengguna aplikasi tentang kelengkapan informasi dan fitur pada aplikasi (Purwanto & Wahyudi, 2018). Berikut kuesioner pengujian sistem pada Tabel 3.…”

Section: Pondokunclassified

Aplikasi Pembayaran Administrasi Santri Terintegrasi SMS Gateway (Studi Kasus Pada PONPES Darussalam Dukuhwaluh)

Wahyudi

2018

JEI

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Penelitian ini bertujuan untuk membuat Aplikasi pengolahan data administrasi santri yang terintegrasi SMS Gateway, Pengolahan data dalam proses pembayaran administrasi santri masih dilakukan secara konvensional menyebabkan beberapa permasalahan diantaranya terjadi redudansi data yang terdapat pada laporan pembayaran, kesulitan mencari arsip pembayaran yang sudah dilakukan santri, Agar aplikasi dapat dikembangkan dengan terukur, maka digunakan Metode pengembangan sistem model Waterfall dengan tahapan analisis, desain, pengodean, pengujian. Pengujian dilakukan dengan dua pendekatan Alpha Testing dan Beta Testing. Alpha Testing merupakan pengujian yang dilakukan di sisi pengembang untuk menguji fungsional sistem menggunakan metode Black box, hasil pengujian Alpha Testing semua fungsional sistem berfungsi dengan baik, dan Beta Testing dilakukan menggunakan metode kuesioner untuk menguji sistem pada pengguna akhir berkaitan dengan kelayakan aplikasi, di dapat prosentasi 95,5% pengguna setuju sistem telah layak di implementasikan.

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The effects of the turbulator blade-angle variation on the intake manifold for improving the power and torque of 4-stroke motor cycle engine

Maksum

Purwanto

2019

J. Phys.: Conf. Ser.

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The motorcycle is a two-wheeled vehicle driven by a motor fuel. The motor fuel is a machine converting the thermal energy into the mechanical energy. The power and torque are one of the parameters that maintained in improving the motorcycle performances. One of the appropriate ways that can be generated use of enhancing the power and torque is to upgrade the combustion process by pairing the turbulators in the intake manifold. The pairing aims at producing the air vortex into the combustion chamber. The research finding of power and torque using the dynotest indicated that the turbulator used in the intake manifold at a 25 degree blade-angle decreased the power by 22% and torque by 9%. The use of turbulator in the intake manifold at a 40 degree blade-angle increased the power by 12% and torque by 3%. The use of turbulator in the intake manifold at the 55 degree blade-angle, on the other hand, decreased the power by 9% and the torque by 7%.

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A study experiment of auto idle application in the excavator engine performance

Cited by 5 publications

References 6 publications

The Effect of Waste Cooking Oil Biodiesel to the Diesel Engine Performance

The Effect of Waste Cooking Oil Biodiesel to the Diesel Engine Performance

Aplikasi Pembayaran Administrasi Santri Terintegrasi SMS Gateway (Studi Kasus Pada PONPES Darussalam Dukuhwaluh)

The effects of the turbulator blade-angle variation on the intake manifold for improving the power and torque of 4-stroke motor cycle engine

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