scholarly journals ANALISIS KOMPOSISI GAS BUANG AKIBAT PERUBAHAN MAIN JET NOZZLE PADA SISTEM KARBURATOR MESIN

POROS ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. 62
Author(s):  
Bernadi Ksatria Putra ◽  
Abrar Riza ◽  
Asrul Aziz

Abstract: Fuel entering through the main jet nozzle, affects engine performance and the composition of the exhaust gas is produced. Research the composition of the exhaust gases in machines otto one cylinder done with experimental method. The purpose of this study was to obtain the characteristics of the engine with exhaust gas analysis method. This research done with varying size main jet nozzle and varying the engine rotation every 400 rpm. Data processing the results of testing includes a comparison of the composition of the exhaust gases is HC, CO2, CO, O2, AFR, and the temperature of the exhaust gases. Then calculate the enthalpy of combustion for each main jet nozzle. The composition of the exhaust gases are best obtained from the main jet nozzle GX 160 which has the highest CO2 value of 20%, with the lowest CO value of 1.26% and the largest combustion enthalpy value with the value of 264.769 kJ. From the analysis can be known that the burning of the main jet nozzle GX 160 approaching the stoichiometric combustion. 

2004 ◽  
Vol 119 (2) ◽  
pp. 12-22
Author(s):  
Dariusz PIETRAS ◽  
Maciej SOBIESZCZAŃSKI

The article presents results of a spark ignition engine examination, which has been conducted to establish the influence of exhaust gases recirculation on the engine performance and the toxic content in exhaust gases. The research concentrated on identifying a range of recirculation levels, which enabled to eliminate its negative influence on the engine performance by means of selecting an appropriate angle of advance. Further, the article discusses the engine examination procedures involving different recirculation control algorithms in the ECM chip. Finally, the article presents EURO II and EURO III tests, conducted on a vehicle/engine controlled by the above-mentioned software.


2018 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
La Baride ◽  
Yustinus Edward K. Maturbongs

The general objective of this research is to generate destilator prototype that utilize heat exhaust gas from engine fishing boats, while specific objective of this research is to generate usefull technology, to generate fresh water for the needs on fishing boats, to increase the productivity of fisherman through the efficiency of sailling time while processing sea water to be fresh water on fishing boat. This research uses experimental method. Destilator was designed as destillation tool of sea water with utilizing heat from exhaust gases of diesel machine. The result of the research for three hours with the volume of distilled water 25 liters were obtained; on machine circle 2200 rpm fresh water generated is 4465 ml with the temperature of sea water 89 oc effectiveness of destilator 66.06 % with heat loses 0.1891kj/s; on machine circle 2000 rpm of fresh water generated is 3700 ml with the temperature of sea water 87 oc, effectiveness of destilator 65.79 % with heat loses 0.068 kj/s; on machine circle 1800 rpm of fresh water generated is 2940 ml with the temperature of sea water 83 oc effectiveness of of destilator 64.36 % with heat loses 0.0313kj/s.


2012 ◽  
Vol 149 (2) ◽  
pp. 30-38
Author(s):  
Damian ŁOMANKIEWICZ ◽  
Krzysztof BRODZIK ◽  
Piotr BIELACZYC

In this paper the influence of changes in ethanol concentration in gasoline-alcohol blend on the concentrations of aldehydes and hydrocarbons emitted from a spark-ignition automotive engine is described. Results of the exhaust gas analysis with E0, E5, E10, E25 and E50 blends tested in a car meeting the Euro 5 emission standard are presented. It was found that an increase of the ethanol concentration in the fuel blend leads to an increase in the acetaldehyde concentration in the exhaust gas. TD-GC-FID/MS analysis of exhaust gases collected on two different, complementary sorbents (Carbograph 1TD, Tenax TA) allowed for identification of the large number of hydrocarbons.


1957 ◽  
Vol 43 (6) ◽  
pp. 632-637
Author(s):  
Toshihiko Shimomura ◽  
Masato Yamamoto

2020 ◽  
Vol 6 (2) ◽  
pp. 187-197
Author(s):  
Nurlaila Suci Rahayu Rais ◽  
Dedeh Apriyani ◽  
Gito Gardjito

Monitoring of warehouse inventory data processing is an important thing for companies. PT Talaga mulya indah is still manual using paper media, causing problems that have an effect on existing information, namely: problems with data processing of incoming and outgoing goods. And the difference between data on the amount of stock of goods available with physical data, often occurs inputting data more than once for the same item, searching for available data, and making reports so that it impedes companies in monitoring inventory of existing stock of goods. Which aims to create a system that can provide updated information to facilitate the warehouse admin in making inventory reports, and reduce errors in input by means of integrated control. In this study, the authors used the data collection method used in this analysis using the method of observation, interviews, and literature review (literature study). For analysis using the PIECES analysis method. Furthermore, the system design used is UML (Unified Modeling Language). The results of this study are expected to produce the right data in the process of monitoring inventory data processing, also can provide the right information and make it easier to control the overall availability of goods.


2020 ◽  
Vol 38 (5A) ◽  
pp. 779-788
Author(s):  
Marwa N. Kareem ◽  
Adel M. Salih

In this study, the sunflowers oil was utilized as for producing biodiesel via a chemical operation, which is called trans-esterification reaction. Iraqi diesel fuel suffers from high sulfur content, which makes it one of the worst fuels in the world. This study is an attempt to improve the fuel specifications by reducing the sulfur content of the addition of biodiesel fuel to diesel where this fuel is free of sulfur and has a thermal energy that approaches to diesel.20%, 30% and 50% of Biodiesel fuel were added to the conventional diesel. Performance tests and pollutants of a four-stroke single-cylinder diesel engine were performed. The results indicated that the brake thermal efficiency a decreased by (4%, 16%, and 22%) for the B20, B30 and B50, respectively. The increase in specific fuel consumption was (60%, 33%, and 11%) for the B50, B30, and B20 fuels, respectively for the used fuel blends compared to neat diesel fuel. The engine exhaust gas emissions measures manifested a decreased of CO and HC were CO decreased by (13%), (39%) and (52%), and the HC emissions were lower by (6.3%), (32%), and (46%) for B20, B30 and B50 respectively, compared to diesel fuel. The reduction of exhaust gas temperature was (7%), (14%), and (32%) for B20, B30 and B50 respectively. The NOx emission increased with the increase in biodiesel blends ratio. For B50, the raise was (29.5%) in comparison with diesel fuel while for B30 and B20, the raise in the emissions of NOx was (18%) and...


2020 ◽  
pp. 146808742098058
Author(s):  
Peter Andruskiewicz ◽  
Russell Durrett ◽  
Venkatesh Gopalakrishnan ◽  
Kushal Narayanaswamy ◽  
Paul Najt

A set of two-cylinder engine concepts utilizing a supercharger and piston- or turbine-compounding were compared to a turbocharged engine modeled with a consistent methodology developed in previous works. In-cylinder insulation was added to each of the engines to evaluate the effects on performance. The goals of this simulation were to utilize energy that otherwise would be bypassed around the turbine side of a turbocharger and redirect it to the crankshaft, as well as to redirect energy that would previously have entered the coolant into the exhaust gases where it could be reclaimed by a second expansion process. Gains in performance and efficiency were thoroughly analyzed to provide insight into the magnitudes and mechanisms responsible. It was found that the second expansion process from exhaust-compounding was able to significantly improve engine performance at moderate to high loads, as well as compensate for the loss in volumetric efficiency that accompanies in-cylinder insulation. The piston-compounded single-shaft DCDE was able to outperform the turbocharged multi-shaft DCDE at mid to high loads, and in maximum brake power due to the low losses in the coupled nature of the second expansion, while the turbine-compounded engine suffers higher losses due to the turbomachinery mismatch with the positive displacement power cylinders.


1967 ◽  
Author(s):  
Walter S. Fagley ◽  
Richard R. Nunez
Keyword(s):  

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