Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

Milojević, Saša; Pešić, Radivoje

doi:10.1155/2018/5292837

Cited by 20 publications

(15 citation statements)

References 16 publications

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“…• Further optimization of vehicles and conventional internal combustion (IC) engines by lowering internal friction and mechanical losses, to lower fuel consumption and exhaust emissions [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, as a solution to the problem, we investigated the application of several varieties of tribological inserts, made of cast iron and graphite as reinforcements for the cylinder liner and the piston skirt, inside reciprocating machines of aluminum as the base material [12,15]. Previously, the surface of the cylinder of the base machine from gray cast iron was treated with honing, while the optimized aluminum construction was modified by adding a coating on the basis of iron using a spray method under atmospheric conditions (APS) [15,18].…”

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confidence: 99%

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Determination of tribological properties of aluminum cylinder by application of Taguchi method and ANN-based model

Milojević

Stojаnović

2018

J Braz. Soc. Mech. Sci. Eng.

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Energy losses due to friction and wear in reciprocating machines could be potentially reduced by applying new surface, materials and lubrication technologies for friction reduction and wear protection. In this paper, the tribological properties of ferrous-based reinforcements are tested and compared with aluminum alloy (EN AlSi10Mg) as a base material for cylinder of air compressor. The ball-on-plate CSM tribometer is used to carry out these tests under dry sliding conditions and constant sliding distance, for three different values of sliding speed and normal load. The wear factor is analyzed by using Taguchi method as well as artificial neural network-based model, with the aim of finding the optimal parameters. The result of signal-to-noise ratio and analysis of variance shows that the best tribological properties were achieved with reinforcements. Material has the greatest impact on the wear factor (35.54%), followed by load (22.16%) and sliding speed (6.01%). A good superposition was reached of the results obtained by the Taguchi method with the results of the artificial neural network-based model. According to the analysis of surface micrographs, it can close that the bonding material is the most dominant mechanism of wear for both tested materials.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Determination of tribological properties of aluminum cylinder by application of Taguchi method and ANN-based model

Milojević

Stojаnović

2018

J Braz. Soc. Mech. Sci. Eng.

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“…The ratio of the maximum piston volume to the minimum compressed volume is called the compression ratio. Varying compression ratios offer a diverse potential of combustion efficiency, which can be translated to torque and horsepower under varying loads and speed conditions [13,14]. The compression ratio is defined as the difference between the volume in the combustion chamber above the piston when the piston is at the bottom dead centre (BDC) to the piston at the top dead centre (TDC) [15].…”

Section: Compression Ratiomentioning

confidence: 99%

The Effect of Compression Ratio by Different Piston Head Shape on the Performance of Motorcycle Engine

Katijan¹,

Kamardin²

2019

IJAME

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The compression ratio has a significant impact on engine power, fuel economy, emission, and other performances of internal combustion engines. Basic engine theory states that a higher compression ratio produces higher torque and horsepower. One way of having different compression ratio is by changing piston head shape. A piston is a cylindrical engine component that slides back and forth in the cylinder bore via forces produced during the combustion process. The piston acts as a movable end of the combustion chamber transmitting power generated from the burning of fuel and air mixture in the combustion chamber. The objective of this study is to compare the engine performance in horsepower and torque produced by the different shapes of the piston head in an internal combustion engine. Three pistons with different head shapes - standard, mug (low compression) and dome (high compression) with a compression ratio of 8.8:1, 7.61:1 and 10.06:1 were selected for the study. An experiment was also performed to a standard piston installed with 1.5 mm gasket, which has a compression ratio of 7.31. The experiments were carried out using a standard internal combustion engine of a Honda EX5 motorcycle. The engine runs on a chassis dynamometer to measure its torque and horsepower. Piston performance was evaluated based on the maximum available torque and horsepower. The result shows that all three pistons produce different torque and horsepower. The domed piston head produces higher torque and horsepower followed by the standard and mug. By just changing the piston head shape, torque and horsepower increased up to 7.14% and 20.05% respectively.

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“…However, most benefits are related to minimal fuel consumption, minimal nitric oxides and particulate matter emissions [11]. To obtain superior performances, a cumulative method is required for improving the design process and final geometry, combustion process parameters [12][13][14][15] type of fuel [16] and other environmental parameters.…”

Section: Introductionmentioning

confidence: 99%

Kinematic and Dynamic Response of a Novel Engine Mechanism Design Driven by an Oscillation Arm

et al. 2020

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The goal of this paper is to highlight the advantage fulfilled by a novel engine mechanism, the concept of which is based on an oscillating arm relative to the classical engine mechanism. Further, the results of this paper demonstrate the benefits of a novel type of mechanism and the major advantages in terms of functioning parameters of an engine. Their performances highly depend on the joint positions of the oscillating arm. The increases in the functional performances rate of success (i.e., piston stroke, volume of the combustion chamber or compression ratio) enable a superior engine power parameter (higher power, torque) and bring some additional improvement on the eco parameters of the engine related to consumption, emission, etc.

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Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

Cited by 20 publications

References 16 publications

Determination of tribological properties of aluminum cylinder by application of Taguchi method and ANN-based model

Determination of tribological properties of aluminum cylinder by application of Taguchi method and ANN-based model

The Effect of Compression Ratio by Different Piston Head Shape on the Performance of Motorcycle Engine

Kinematic and Dynamic Response of a Novel Engine Mechanism Design Driven by an Oscillation Arm

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