On the Performance of Six-Stroke Single-Power Combustion Engine

Widodo

2022

JRM

The six-stroke combustion engine is a refinement of the four-stroke machine by adding two strokes of the four-stroke combustion engine. The two steps in question are the second compression stroke and the second expansion stroke. The method used is an experimental research method. This study aims to obtain the performance value and exhaust gas emission values for Pertamax and Ethanol fuels on a six-stroke engine. The fuel used is Pertamax fuel with a purity of 100% and Ethanol with a purity of 99.7%. Based on the results of research, analysis, and discussion, the performance of a six-stroke combustion engine with two cycles of ignition with Pertamax and Ethanol fuel is concluded that the average torque of Pertamax fuel is 1.07% higher than Ethanol fuel. The average adequacy of Pertamax fuel is 1.27% higher than Ethanol fuel. The combustion efficiency of the Pertamax fuel six-stroke motor is 1.06% less than ethanol fuel, the cycle work (Wnet) of the Pertamax fuel six-stroke engine is 1.07% higher than that of ethanol fuel, the thermal efficiency (ηth) of the Pertamax fuel six-stroke engine is comparable to that of ethanol fuel while the fuel efficiency (ηf) of the six-stroke ethanol fuel engine is 1.09% higher than the pertamax fuel. The exhaust gas emission test results for Pertamax fuel CO are 21.2% higher than ethanol fuel. CO2 emissions from Pertamax fuel are 1.56% less than ethanol fuel, and HC exhaust emissions from Pertamax fuels are 3.7% higher than ethanol fuels.

Section: Perhitungan Torsi Dan Daya Efektifunclassified

Studi Komparasi Motor Bakar 6 Tak Dengan Siklus Dua Kali Pengapian Menggunakan Bahan Bakar Pertamax Dan Etanol

Elandi

Widodo

2022

JRM

“…Motor 6 tak yang dikembangkan di atas di kenal dengan motor 6 tak MUB-2. [2] Procedia of Engineering and Life Science Vol. 1 Motor bakar 4 tak otto atau yang sering disebut motor bensin adalah salah satu dari internal combustin engine dimana pada motor 4 tak piston akan bergerak dari Titik Mati Atas (TMA) ke Titik Mati Bawah (TMB), dimana setiap kali bergerak dari TMA ke TMB maupun dari TMB ke TMA terhitung satu kali langkah.…”

Section: Pendahuluanunclassified

Comparative Study of Combustible Species for 4-stroke Otto Cycle Combustion Motor and 6-stroke MUB-2 Cycle Combustion Motor with Fuel Pertamax

Nurdiansyah

Soeparman

2021

PELS

This paper describes the ratio of levels of combustible species (CO, HC, CO2 and lambda) of a four-cycle otto motor with a six-stroke MUB-2 motor with additional combustion duration and two working steps. The increase in combustion duration aims to re-burn combustible species that have not been completely burned in the first combustion. This study used a 4 stroke motor with a capacity of 125 cc and then modified it into a 6 stroke motorbike with twice the duration of combustion. The observed local atmospheric conditions at a relative humidity of about 76% rH, and the ambient temperature and pressure were around 24 ° C and 101.32kPa, respectively. The implementation of data retrieval with crankshaft rotation at intervals of 600 rpm from 2400 rpm to 7200 rpm.Using an anlyser gas, the MUB-2 six-stroke engine showed 12.36% CO levels, 27.30% HC levels, 30.8 CO2 levels % and 1.7% lower lambda than conventional four-stroke engines. This means that in the 6 stroke MUB-2 motor, the combustion process of the air and fuel mixture is more perfect than the conventional 4 stroke motor.

“…Siswanto et al [12,13] telah mengembangkan konsep motor bakar 6 langkah dengan tiga kali pengapian. Motor 6 langkah merupakan pengembangan dari motor 4 langkah dengan penambahan dua langkah yaitu langkah kompresi kedua dan langkah ekspansi kedua (Gambar 1).…”

Section: Pendahuluanunclassified

Pengaruh Derajat Pengapian terhadap Kinerja Motor Bakar 6 Langkah Berbahan Bakar Etanol

Razi

Wijayanti

2019

JRM

The six-stroke spark ignition engine has the potential to be developed as a new alternative to future motor fuel technology. The development of motor vehicles will be directly proportional to the use of rising fossil fuels. It is, therefore, necessary to have renewable alternative fuel, in which one of them is using ethanol fuel. Characteristics of the ethanol fuel are different from fossil fuels so the ignition timing is needed to be modified. The purpose of this study was to determine the effect of the ignition degree on the performance of a 6-stroke spark-ignition engine fuel using ethanol. This research is worked out directly by experimental and testing on the intended object. The test was carried out on an ethanol-fueled 6-step spark ignition engine with variations in the ignition angle at 24 0 ,26 0 and 28 0. Each variation was tested for a rotation interval of 600 rpm from 2400 rpm to 7200 rpm. The results show that ignition degree greatly affects performance. The ignition angle of 28 0 produced better torque, effective power, effective specific fuel consumption and effective thermal efficiency than those of the ignition degrees at 24 0 and 26 0 (standard angle). This is due to the use of ethanol fuel which has a slower combustion speed. Based on this fact, it is necessary to advance the ignition angle so that the explosive power of the air-fuel mixture is increasing. Low fuel consumption and better effective thermal efficiency were observed for 28 0 ignition degrees compared to 24 0 and 26 0 ignition degrees.