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

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.

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

2020 ◽  
Vol 3 (02) ◽  
pp. 1-4
Author(s):  
Hadi Rahmad ◽  
Mujahid Wahyu ◽  
Devina Rosa Hendarti
Keyword(s):  
Gasoline Engine ◽  
Combustion Engine ◽  
Engine Oil ◽  
Cylinder Block ◽  
Air Cooling ◽  
Nox Emissions ◽  
Compressed Natural Gas ◽  
Temperature Changes ◽  
Gas Fuel ◽  
Block Temperature

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%

A case study on particulate emissions from a gasoline plug-in hybrid electric vehicle during engine warm-up, taking into account start–stop operation

2020 ◽  
Vol 234 (13) ◽  
pp. 2907-2922
Author(s):  
Martin Lenz ◽  
Moritz Cremer ◽  
Daniel Guse ◽  
Henning Röhrich ◽  
Stefan Pischinger
Keyword(s):  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Gasoline Engine ◽  
Combustion Engine ◽  
Catalytic Converter ◽  
Particulate Filter ◽  
Particulate Emissions ◽  
Warm Up ◽  
Hybrid Electric

Concerning the discussions about emissions caused by individual mobility, it is foreseeable that future vehicle concepts will increasingly be based on hybrid powertrains. These systems lead to more complex operating scenarios, which have a significant influence on the resulting emissions of the engine. This work shows a case study and the results in the operation and emission behavior of a plug-in hybrid electric vehicle with a direct injection gasoline engine when operated in an internationally recognized driving cycle. The vehicle’s exhaust aftertreatment system consists of a three-way catalytic converter; a particulate filter is not installed. The emissions are analyzed with a focus on particulate number emissions (from soot), especially during the warm-up phase and the frequent start–stop events (in total, there are 12 internal combustion engine operating phases), which are typical for hybrid vehicles. The results show that approximately 50% of the emitted particulates have a smaller size, 23 nm (a very high number of particulates with a mean size of 10 to 15 nm are present), which are currently not regulated, but are expected to have a high risk of adverse health effects.

Effects of ethanol content on cast iron cylinder wear in a flex-fuel internal combustion engine–A case study

Wear ◽  
2018 ◽  
Vol 406-407 ◽  
pp. 105-117 ◽  
Author(s):  
Dinecio dos Santos Filho ◽  
André Paulo Tschiptschin ◽  
Hélio Goldenstein
Keyword(s):  
Cast Iron ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Ethanol Content ◽  
Flex Fuel

scholarly journals Heat Transfer Analysis of 70 kW Gray Cast Iron Alloy Engine Head

2019 ◽  
pp. 108-114
Author(s):  
Su Yin Win ◽  
Lwin Lwin Oo
Keyword(s):  
Heat Transfer ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Combustion Engine ◽  
Iron Alloy ◽  
Heat Fluxes ◽  
Heat Transfer Analysis ◽  
Gray Cast ◽  
Heat Temperature ◽  
Heat Transfer Calculation

Engine head is one of the most complicated parts of internal combustion engine. It is directly exposed to high combustion pressure and temperature. In this paper, engine head heat transfer rate for 70.4 kW diesel engine. The design engine head is made of gray cast iron alloy. The original engine head is made of aluminums alloy. The cast iron engine head can get over heat temperature because the thermal conductivity of cast iron is not as good as aluminium. So that it is necessary of increasing the cooling efficiency. In the engine heat transfer calculation, the heat fluxes from the engine head are calculated with vary engine speeds and water velocity and heat transfer analysis is required for the engine metal changing process.

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