Pengaruh Temperatur Mesin Terhadap  Kadar Emisi NOx  pada Motor dengan Bahan Bakar Compressed Natural Gas (CNG)

The increase in NOx levels produced by CNG-fueled engines occurs when the fuel switches from gasoline to gas fuel (CNG). The author changed the otto 4 stroke gasoline engine, into a CNG-fueled motorbike and provided additional cooling in the form of a burst of air to the cylinder block. Changes in engine block temperature are detected using a temperature sensor placed on the engine oil. Bursts of air cooling result in temperature changes in engine oil. Changes in engine oil temperature are accompanied by changes in the resulting NOx emissions. This study shows that with a decrease in engine oil temperature in the combustion engine, NOx emission levels also decrease. From the research results it can be ignored that by providing additional air bursts will be able to reduce NOx emissions by up to 18%

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Computer Engineering and Design of Cast Parts for Internal Combustion Engine Crankcase

Journal of Engineering Sciences ◽

10.21272/jes.2019.6(2).e4 ◽

2019 ◽

Vol 6 (2) ◽

pp. e24-e30

Author(s):

O. V. Akimov ◽

A. P. Marchenko ◽

V. I. Alyokhin ◽

V. Soloshenko ◽

O. Y. Shinsky ◽

...

Keyword(s):

Cast Iron ◽

Metal Content ◽

Gasoline Engine ◽

Gray Cast Iron ◽

Combustion Engine ◽

Maximum Size ◽

Cylinder Block ◽

Computer Engineering ◽

Cast Parts

This paper discusses the formulation of the problem of designing the cast parts block-crankcases engine in order to ensure its quality for the case study of cast iron parts of the cylinder block inline four-cylinder gasoline engine with the capacity of 1.4 dm3. Material Ch190B is gray cast iron with optional chemical composition, and sulfur – no more than 0.15 %, phosphorus – no more than 0.1 %, structure – perlite plate. The results obtained in this work confirm the conclusions about the possibility of reducing the metal content of the casting and changing the technical conditions of its manufacture. According to the results of the research, the developed recommendations are aimed at stabilizing the characteristics of the metal, reducing metal consumption, and changing the technical conditions for the defectiveness of this type of castings. Recommendations for changing the configuration of the partition in order to reduce the metal content of the casting and recommendations for changing the Technical Conditions for casting defects were stated for the casting block crankcase 4ChN12/14. For defects of discontinuity type, the maximum size was defined, and controlled places of their detecting were defined. Keywords: CAD, CAE, block-crankcase, 3D model, casting defect.

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The Performance Analysis of LPG as the Vehicle Fuel

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.217-219.749 ◽

2012 ◽

Vol 217-219 ◽

pp. 749-753 ◽

Cited By ~ 2

Author(s):

Xian Long Ding ◽

Jing Ping Si ◽

Guo Sheng Wang

Keyword(s):

Natural Gas ◽

Alternative Fuels ◽

Gasoline Engine ◽

Bench Test ◽

Liquefied Petroleum Gas ◽

Power Performance ◽

Compressed Natural Gas ◽

Gasoline Engines ◽

Oil Resources ◽

Gas Fuel

As the global shortage of oil resources and the rapid increase in car ownership, using gas as the alternative fuel is getting more and more important. Gas fuel, such as CNG (compressed natural gas)/LNG (liquefied natural gas) and LPG (liquefied petroleum gas), with resource-rich, less pollution and other features, are desirable alternative fuels for cars. Through engine bench test, a comparative analysis of power performance between LPG-single fuel engine and gasoline engine was done. The result shows that, by applying LPG injection on single-fuel engine, the power of the LPG engine increases to a higher level than gasoline engines. And combined with the analysis based on the study of domestic development of NGV, predictions could be made that new fuel vehicles will be well utilized in future.

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PERFORMANCE ASSESSMENT OF A LARGE INTERNAL COMBUSTION ENGINE DUE TO INLET AIR COOLING AND DEHUMIDIFICATION: A SIMULATION USING GT-POWER SOFTWARE

10.26678/abcm.encit2020.cit20-0777 ◽

2020 ◽

Author(s):

Israel Campbell ◽

Andre Chun ◽

Bruno Muniz de Freitas Miotto ◽

José Joaquim Conceição Soares Santos ◽

João L M Donatelli ◽

...

Keyword(s):

Internal Combustion Engine ◽

Performance Assessment ◽

Combustion Engine ◽

Internal Combustion ◽

Air Cooling

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Lubricants, industrial oils and related products (class L). Family E (Internal combustion engine oils). Specifications for two-stroke-cycle gasoline engine oils (categories EGB, EGC and EGD)

10.3403/30211152 ◽

2011 ◽

Keyword(s):

Internal Combustion Engine ◽

Gasoline Engine ◽

Combustion Engine ◽

Internal Combustion ◽

Engine Oils ◽

Stroke Cycle ◽

Internal Combustion Engine Oils

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Methodology to Evaluate the Fuel Economy of a Multimode Combustion Engine With Three-Way Catalytic Converter

Volume 2: Dynamic Modeling and Diagnostics in Biomedical Systems; Dynamics and Control of Wind Energy Systems; Vehicle Energy Management Optimization; Energy Storage, Optimization; Transportation and Grid Applications; Estimation and Identification Methods, Tracking, Detection, Alternative Propulsion Systems; Ground and Space Vehicle Dynamics; Intelligent Transportation Systems and Control; Energy Harvesting; Modeling and Control for Thermo-Fluid Applications, IC Engines, Manufacturing ◽

10.1115/dscc2014-6146 ◽

2014 ◽

Author(s):

Sandro P. Nüesch ◽

Anna G. Stefanopoulou ◽

Li Jiang ◽

Jeffrey Sterniak

Keyword(s):

Fuel Economy ◽

Combustion Engine ◽

Catalytic Converter ◽

Oxygen Storage ◽

Nox Emissions ◽

Combustion Mode ◽

Mode Switch ◽

Drive Cycle ◽

Finite State ◽

The Impact

Highly diluted, low temperature homogeneous charge compression ignition (HCCI) combustion leads to ultra-low levels of engine-out NOx emissions. A standard drive cycle, however, would require switches between HCCI and spark-ignited (SI) combustion modes. In this paper a methodology is introduced, investigating the fuel economy of such a multimode combustion concept in combination with a three-way catalytic converter (TWC). The TWC needs to exhibit unoccupied oxygen storage sites in order to show acceptable performance. But the lean exhaust gas during HCCI operation fills the oxygen storage and leads to a drop in NOx conversion efficiency. Eventually the levels of NOx become unacceptable and a mode switch to a fuel rich combustion mode is necessary in order to deplete the oxygen storage. The resulting lean-rich cycling leads to a penalty in fuel economy. In order to evaluate the impact of those penalties on fuel economy, a finite state model for combustion mode switches is combined with a longitudinal vehicle model and a phenomenological TWC model, focused on oxygen storage. The aftertreatment model is calibrated using combustion mode switch experiments from lean HCCI to rich spark-assisted HCCI and back. Fuel and emissions maps acquired in steady state experiments are used. Two depletion strategies are compared in terms of their influence on drive cycle fuel economy and NOx emissions.

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