scholarly journals Reducing Emission of Harmful Toxic Substances by Trucks in the Aspect of Analysis of Selected Vehicle Operating Parameters and Human Factor

2019 ◽  
Vol 26 (3) ◽  
pp. 227-234
Author(s):  
Agnieszka Aleksandra Szokało ◽  
Marcin Rychter
Keyword(s):  
Fuel Consumption ◽  
Rotational Speed ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Constant Factor ◽  
Operating Parameters ◽  
Toxic Substances ◽  
Vehicle Speed ◽  
Harmful Substances

Abstract Digital tachographs as devices recording the work of a lorry and driver’s work are a constant factor in the work of a professional driver. It is therefore important to preserve the security of recording and storing electronic information. In this matter, cryptography also becomes an inseparable field of science. The control services set up to conduct roadside inspections do not detect all violations in the recording devices by encrypting information in information systems. One of the frequent vehicle operating parameters that can be falsified are the speed of the vehicle and its rotational speed, as well as the time and efficiency of the driver’s work. These parameters affect the amount of fuel consumption. The reduction of fuel consumption translates directly to the reduction of harmful substances emitted by the car to the environment. Variable compression engines are becoming the future of motoring in the case of internal combustion engines. It is noticeable that there are more frequent deliberate of regulations; and more violations rules concerning the proper functioning of recording devices by recording driver activity. Current methods of preventing violations are insufficient. The article points out the violations related to the actual rotational speed of the crankshaft of the internal combustion engine in relation to the vehicle speed profile, which is directly related to the fuel consumption and the emission of harmful substances. The article describes the ways to reduce fuel consumption, of which the correct driving technique is important in addition to the previously marked parameters. The factors that increase the awareness of professional drivers in the aspect of proper driving techniques are described.

Effect of Engine Operating Parameters on Combustion and Emission Characteristics

1992 ◽  
Author(s):  
Jiang Lu ◽  
Ashwani K. Gupta ◽  
Eugene L. Keating
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Chamber ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Combustion Process ◽  
Pressure Rise ◽  
Internal Combustion ◽  
Operating Parameters ◽  
Emission Characteristics ◽  
Pollutants Emission

Abstract Numerical simulation of flow, combustion, heat release rate and pollutants emission characteristics have been obtained using a single cylinder internal combustion engine operating with propane as the fuel. The data are compared with experimental results and show excellent agreement for peak pressure and the rate of pressure rise as a function of crank angle. The results obtained for NO and CO are also found to be in good agreement and are similar to those reported in the literature for the chosen combustion chamber geometry. The results have shown that both the combustion chamber geometry and engine operating parameters affects the flame growth within the combustion chamber which subsequently affects the pollutants emission levels. The code employed the time marching procedure and solves the governing partial differential equations of multi-component chemically reacting fluid flow by finite difference method. The numerical results provide a cost effective means of developing advanced internal combustion engine chamber geometry design that provides high efficiency and low pollution levels. It is expected that increased computational tools will be used in the future for enhancing our understanding of the detailed combustion process in internal combustion engines and all other energy conversion systems. Such detailed information is critical for the development of advanced methods for energy conservation and environmental pollution control.

A Modality to Optimize Common Functioning of a Pressure Wave Supercharger with an Internal Combustion Engine

2015 ◽  
Vol 772 ◽  
pp. 350-354
Author(s):  
Cristian Ioan Leahu ◽  
Anghel Chiru ◽  
Stelian Tarulescu
Keyword(s):  
Rotational Speed ◽  
Pressure Wave ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Driving Speed ◽  
Optimal Values ◽  
Different Characteristics ◽  
Correlation Grade

The functional constructive variants of the Hyprex and Comprex compressors with pressure wave built until the present are reduced in number. Starting from this ascertainment, the paper proposes to highlight the optimization on joint functioning of existing pressure wave supercharger models with internal combustion engines. This is possible due to the efficiency of the supercharging process, realized with such superchargers, which depends on the correlation grade between the rotational speed of the supercharger and the pressure of the exhaust gasses that enter in the compressor's channels, reason due to, a single supercharger model can be capable to supercharge efficiently engines with different characteristics, if the optimal values for the driving speed of the pressure wave supercharger are identified (according to the method proposed in the work) and adapted (according the level of energetic and/or ecologic performances that the engine should achieve) for each type of engine apart.

Determination of mechanical losses in internal combustion engines

2020 ◽  
pp. 37-38
Author(s):  
I.K. Aleksandrov ◽  
V.A. Rakov ◽  
N.E. Dyimov
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
High Reliability ◽  
Internal Combustion ◽  
Compressed Air ◽  
Combustion Engines ◽  
Harmful Substances ◽  
Fuel Consumption And Emissions ◽  
Emissions Of Harmful Substances

A method for determining of mechanical losses in an internal combustion engine is proposed, the principal difference of which is the rotation of the engine shaft with compressed air. This method provides high reliability results on reduction of fuel consumption and emissions of harmful substances. Keywords ICE, mechanical losses, tests, compressed air [email protected]

scholarly journals INFLUENCE OF THE EXCESS AIR FACTOR ON FUEL CONSUMPTION BY DIESEL INTERNAL COMBUSTION ENGINES

2016 ◽  
Vol 2016 (5) ◽  
pp. 38-42
Author(s):  
Инна Карнаухова ◽  
Inna Karnaukhova ◽  
Владимир Карнаухов ◽  
Vladimir Karnaukhov ◽  
Дмитрий Захаров ◽  
...  
Keyword(s):  
Internal Combustion Engine ◽  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Climatic Conditions ◽  
Motor Vehicles ◽  
Intake Manifold ◽  
Excess Air ◽  
The Mathematical Model

According to the results of the study numeric val-ues of influence dynamics of the excess air factor on fuel consumption by diesel internal combustion engine have been received. Cause and effect relationships between the excess air factor and formation of a mix have been defined, optimum intervals of the excess air factor, temperature and air pressure in an intake mani-fold which provide optimum fuel consumption have been given. The mathematical model of fuel consumption de-pending on the excess air factor has been introduced. Studies carried out at the department "Operation of motor vehicles" of the Tyumen Industrial University show that the heating of air in an intake manifold of internal combustion engine KAMAZ 740 up to +67C the temperature interval of the minimum fuel ≤ 2,05 that gives fuel economy consumption increases from-25 to + 77 ° C when to 30 %, especially, at cars opera-tion in severe climatic conditions.

scholarly journals Development of a virtual bench for the analysis of the physical processes of internal combustion engines

2021 ◽  
Vol 2102 (1) ◽  
pp. 012013
Author(s):  
J P Rojas Suárez ◽  
J A Pabón León ◽  
M S Orjuela Abril
Keyword(s):  
Heat Release ◽  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Maximum Deviation ◽  
Pressure Curve ◽  
Combustion Engines ◽  
Operating Characteristics ◽  
And Performance

Abstract Currently, internal combustion engines face the challenge of reducing fuel consumption and reducing polluting emissions due to their significant impact on the environment. Therefore, it is necessary to use tools that allow us to evaluate the operating characteristics of this type of thermal machines. In the present investigation, the development of a virtual bench was proposed for the analysis of the behavior and performance characteristics of an internal combustion engine for use as a learning tool in higher education students. From the results obtained, it could be demonstrated that the pressure curves of the combustion chamber and the rate of heat release obtained by means of the virtual bench presented a high concordance with the experimental records. The maximum deviation obtained was 5% and 15% for the pressure curve and the heat release rate. Comparing the performance parameters of the brake specific fuel consumption of the engine and energy efficiency, a maximum deviation of 2.96% was shown compared to the real engine. In general, the virtual development bank can describe the behavior of the engine, allowing the characterization of physical phenomena, as well as evaluating the effect of auxiliary technologies such as turbo-compression systems.

Intelligent Design of Internal Combustion Engine in Hybrid Genetic Algorithm

2010 ◽  
Vol 26-28 ◽  
pp. 186-189 ◽  
Author(s):  
Jiang Zhu ◽  
Ping Yuan Xi
Keyword(s):  
Genetic Algorithm ◽  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Hybrid Genetic Algorithm ◽  
Internal Combustion ◽  
Optimization Process ◽  
Operating Parameters ◽  
Local Optimum ◽  
Vehicle Engine

The basic parameters of internal combustion engines reflect the working performance and quality of the internal combustion engine. Therefore it is of great significance to design the operating parameters of vehicle engine by design optimization method. In this paper, hybrid genetic algorithm is adopted to optimize operating parameters of vehicle engine, so that optimization process was simplified and the global optimal solution is ensured reliably. Being satisfied with the heating loading, mechanical loading and the conditions of gas mixture of engine and boundary constraints, the optimization mathematical model is created which is to minimize the heating surface area of engine. Considering the problem of low efficiency and local optimum caused by traditional optimal methods, the hybrid Genetic Algorithm are adopted to solve the optimization model. So that the optimization process is simplified and global optimum is acquired reliably.

Effect of Ethanol on the Fuel Consumption of a Two Stroke Unmodified Commercial Petrol Engine

2015 ◽  
Vol 787 ◽  
pp. 756-760 ◽  
Author(s):  
A. Kirthivasan ◽  
J. Amitesh Jain ◽  
Akhilnandh Ramesh ◽  
D. Ebenezer
Keyword(s):  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Specific Fuel Consumption ◽  
Experimental Investigations ◽  
Combustion Engines ◽  
Brake Specific Fuel Consumption ◽  
Si Engine ◽  
Fuel Consumption Rate

Alternative fuel source such as ethanol possess great potential to replace conventional fuels such as petrol and diesel. There has been a great increase in the usage of such fuels in the developing world, of late, with many countries having already mandated the usage of ethanol blended petrol. In developing countries, two stroke internal combustion engines continue to be used for powering agricultural implements and auto rickshaws. This paper presents the experimental investigations carried out on the usage of petrol blended with different proportions of ethanol by volume (5%, and 10%) as a fuel for an unmodified and used 100cc two stroke SI engine. The objectives of the experimental investigations are to determine whether ethanol blended petrol can be used as a suitable fuel for the commonly used two stroke internal combustion engine without any modifications. Tests were carried out on the engine, with petrol as the fuel initially and then with ethanol blended petrol with increasing proportion of ethanol. The total fuel consumption rate seemed to increase upon addition of ethanol. However, the brake specific fuel consumption remained fairly constant. The fact that brake specific fuel consumption varies only marginally indicate that ethanol can be used as a substitute for petrol, as a fuel.

ASSESSING THE EFFECT OF ANTIFRICTION ADDITIVE ON ECONOMIC, POWER AND ENVIRONMENTAL INDICATORS OF INTERNAL COMBUSTION ENGINES

2020 ◽  
pp. 50-58
Author(s):  
ALEKSEI B. LAGUZIN1 ◽  
◽  
SERGEI M. GAIDAR ◽  
ALEKSANDR V. PYDRIN ◽  
ABDULZAHRA FARHOOD NAJI NAJM ◽  
...  
Keyword(s):  
Internal Combustion Engine ◽  
Fuel Consumption ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Environmental Indicators ◽  
Engine Oil ◽  
Engine Operation ◽  
Antifriction Additive ◽  
Exhaust Gases ◽  
Harmful Substances

To determine eff ectiveness and feasibility of using an antifriction additive, the authors carried out comparative bench tests of an internal combustion engine VAZ-11194 No. 000094 of environmental class 5, with and without using an antifriction additive to Lukoil Genesis 5W-30 oil. The studies were carried out in accordance with GOST 14846 “Automotive Engines, Bench Test Methods”, UN Regulation No. 49 (emissions of carbon monoxide, hydrocarbons, nitrogen oxides with exhaust gases) and UN Regulation No.85 (performance indicators). During the tests, harmful substances with exhaust gases (CO, CH, NOx) emissions,engine power indicators and fuel consumption were evaluated. The tests were carried out according to presented method after 5, 50 and 100 hours of engine operation. The test results recorded an increase in power by 4.1%, in engine torque by 3.5…4.0% with a decrease in specifi c fuel consumption by 6…7% after 100 hours of engine operation with the use of an antifriction additive in engine oil. During the test period, harmful substances concentration in engine exhaust gases decreased: CO to 21.6%, CH to 18.3%, and NOx to 27.6%. A conclusion has been formulated on the eff ectiveness of using antifriction additives in terms of improving environmental, economic and power indicators of an internal combustion engine

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