scholarly journals СТАТИЧНІ ТА ДИНАМІЧНІ ВЛАСТИВОСТІ ДИЗЕЛЯ З ТУРБОНАДДУВОМ ПРИ ЗМІНОМУ КУТІ ВИПЕРЕДЖЕННЯ ВПОРСКУВАННЯ ПАЛИВА

2012 ◽  
pp. 140-144
Author(s):  
В. І. Левчук ◽  
В. М. Арендаренко ◽  
О. М. Іванов
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Dynamic Properties ◽  
Experimental Studies ◽  
Operating Parameters ◽  
Fuel Supply ◽  
Close Relationship

Наведені результати експериментального дослі-дження впливу кута випередження впорскуванняпалива на статичні та динамічні властивості ди-зеля з турбонаддувом. На основі знятих швидкіс-них характеристик робочих параметрів дизеля зарізних установочних кутів випередження впорску-вання палива була дана оцінка ступеня впливу до-сліджуваного регульованого параметра на стати-чні властивості двигуна. З аналізу динамічнихрежимів вільного прискорення дизеля, отриманихпри різних характерах зміни кута випередженнявпорскування палива, зроблені висновки про тіснийвзаємозв’язок між моментом початку подачіпалива та якістю заданого перехідного процесу. The results of experimental studies of the effect of advanceangle of fuel injection on the static and dynamic properties of adiesel engine with a turbocharger have been produced. Thedegree of influence of the controlled parameter on the staticproperties of a diesel engine was assessed on the basis of velocity characteristics of operating parameters of diesel at different advance angles of fuel injection. From the analysis of dynamicmodes of the free acceleration of a diesel engine, produced byvarious characters of changing of the advance angle of fuelinjection, conclusions about the close relationship between theonset of the fuel supply and the quality of a given transitionhave been made.

Influence of deforming of common rail diesel injectors parts on the fuel injection process

2021 ◽  
pp. 4-12
Author(s):  
Keyword(s):  
High Pressures ◽  
Fuel Injection ◽  
Experimental Studies ◽  
Common Rail ◽  
Electronic Control ◽  
Fuel System ◽  
Fuel Supply ◽  
Injection Process ◽  
Injection Cycle

Experimental studies have revealed a significant impact of deformation of Сommon Rail injector parts on the fuel supply process. High pressures alter the structure of the fuel supply cy-cle. Theforward front of the fuel supply cycle begins with the stage of unloading the deformed parts of the injector. The rear front of the fuel supply cycle ends with the stage of deformation of the injector parts. The calculated and experimental determination of cyclic fuel supply gave similar results. The developed method of determining the duration of the injection cycle stages creates a basis for experimental verification of mathematical models. Keywords: injector, Common Rail, diesel, fuel system, electronic control, needle, fuel injection

Characteristics of injection of diesel fuel, rapeseed oil and their mixtures in diesel engines of various types

2021 ◽  
pp. 167-178
Author(s):  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
High Speed ◽  
Fuel Injection ◽  
Experimental Studies ◽  
Fuel Injector ◽  
High Speed Diesel ◽  
Engine Type

The necessity of adapting diesel engines to work on vegetable oils is justified. The possibility of using rapeseed oil and its mixtures with petroleum diesel fuel as motor fuels is considered. Experimental studies of fuel injection of small high-speed diesel engine type MD-6 (1 Ch 8,0/7,5)when using diesel oil and rapeseed oil and computational studies of auto-tractor diesel engine type D-245.12 (1 ChN 11/12,5), working on blends of petroleum diesel fuel and rapeseed oil. When switching autotractor diesel engine from diesel fuel to rapeseed oil in the full-fuel mode, the mass cycle fuel supply increased by 12 %, and in the small-size high-speed diesel engine – by about 27 %. From the point of view of the flow of the working process of these diesel engines, changes in other parameters of the fuel injection process are less significant. Keywords diesel engine; petroleum diesel fuel; vegetable oil; rapeseed oil; high pressure fuel pump; fuel injector; sprayer

scholarly journals Experimental research of two stroke aircraft diesel engine

2019 ◽  
Vol 179 (4) ◽  
pp. 75-79
Author(s):  
Łukasz GRABOWSKI ◽  
Paweł KARPIŃSKI ◽  
Grzegorz BARAŃSKI
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Experimental Studies ◽  
Injection System ◽  
Temperature Control System ◽  
Maximum Pressure ◽  
System Control ◽  
Fuel Injection System ◽  
Measurement Systems ◽  
New Type

This paper presents the results of experimental studies of the opposed-piston diesel engine. This engine was designed during one of the stages of the research on a new-type drive unit for gyrocopter applications. In order to conduct research, a special test stand as well as control and measurement systems were developed. As part of the work on the engine, the fuel injection system, engine temperature control system and measurement systems were designed. In addition, a computer program has been developed for the fuel injection system control (injectors, valves fuel pressure regulators). The paper presents the results of the preliminary tests for a single value of engine speed (1500 rpm) and three values of load defined by torque. The measured value of the indicated pressure made it possible to calculate the maximum pressure. The results obtained from the bench tests were analyzed.

The Performance and Quality Control of Diesel Engine Components

1965 ◽  
Vol 180 (1) ◽  
pp. 673-688
Author(s):  
R. Towell
Keyword(s):  
Quality Control ◽  
Diesel Engine ◽  
Fuel Injection ◽  
Performance Testing ◽  
Piston Rings ◽  
Injection Equipment ◽  
Technical Requirements ◽  
Basic Ideas ◽  
Engine Components

This paper outlines methods developed to control the quality of incoming materials and finished components with emphasis on the performance that is ultimately required from them. The examples given are taken from diesel engineering but the basic ideas apply to all industries whose final products consist of an assembly of components which are complete in themselves. The quality control of materials and components fills an important role in ensuring that the technical requirements written into a specification by a designer are met by suppliers. The author outlines various techniques developed in his company to achieve this. The paper has two main sections: ( a) quality control of incoming materials, and ( b) performance control of components. The first part deals with the controls established for cast-iron components of various sizes ranging from bedplates and columns weighing about 20 tons to piston rings weighing less than one pound. Ultrasonic testing is briefly discussed as also is the material specification for white metal bearings. The second part of the paper gives examples of performance testing of a number of diesel engine components together with brief details of some of the test rigs that have been developed to carry out the tests. Some of the components discussed in this section are piston rings, crankshafts, camshafts, cams, and fuel injection equipment.

Experimental Studies on the Influence of Diesel Engine Operating Parameters on Properties of Emitted Soot Particles

2012 ◽  
Vol 184 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Ulrich Leidenberger ◽  
Wolfgang Mühlbauer ◽  
Sebastian Lorenz ◽  
Sebastian Lehmann ◽  
Dieter Brüggemann
Keyword(s):  
Diesel Engine ◽  
Experimental Studies ◽  
Operating Parameters ◽  
Soot Particles

scholarly journals The Influence of Diesel Oil Improvers on Indices of Atomisation and Combustion in High-Efficiency Engines

2017 ◽  
Vol 24 (3) ◽  
pp. 99-105 ◽  
Author(s):  
Ireneusz Pielecha ◽  
Jacek Pielecha ◽  
Maciej Skowron ◽  
Aleksander Mazanek
Keyword(s):  
Diesel Engine ◽  
Physicochemical Properties ◽  
Diesel Fuel ◽  
Liquid Fuel ◽  
High Efficiency ◽  
Fuel Injection ◽  
Diesel Oil ◽  
Fuel Combustion

Abstract The process of fuel combustion in a diesel engine is determined by factors existing during liquid fuel injection and atomisation. The physicochemical properties of the fuel to a large extent decide upon the quality of this phase of cylinder fuelling. So it is important to ensure appropriate properties of a fuel affecting its atomisation and, as a result, combustion. The paper deals with the topic of diesel oil improvers and the analysis of their influence on atomisation and combustion indices. In the studies base diesel oil and a diesel fuel improved by a package of additives, were used. The process of conventional and improved fuel injection was analysed by using optical examinations. The amount of released heat was evaluated during the studies carried out on combustion. Significant aspects of the applied improvers in relation to fuel injection and its combustion have been indicated.

scholarly journals Research On Fuel Compensation Control of High-pressure Common-Rail Diesel Engine Based On Crankshaft Segment Signals

2021 ◽  
Author(s):  
Yuhua Wang ◽  
Guiyong Wang ◽  
Guozhong Yao ◽  
Lizhong Shen ◽  
Shuchao He
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Fuel Injection ◽  
Common Rail ◽  
Engine Fuel ◽  
Quantization Method ◽  
Software Module ◽  
Fuel Supply ◽  
Compensation Control ◽  
High Pressure Common Rail

Abstract This paper studies the high-pressure common-rail diesel engine fuel supply compensation based on crankshaft fragment signals in order to improve the uneven phenomenon of diesel engine fuel supply and realize high efficiency and low pollution combustion. The experiments were conducted on a diesel engine with the model of YN30CR. Based on the characteristics of crankshaft fragment signals, the proportional integral (PI) control algorithm was used to quantify the engine working nonuniformity and extract the missing degree of fuel injection. The quantization method of each cylinder working uniformity and algorithm of fuel compensation control (FOC) based on crankshaft fragment signal were established, and the control strategy of working uniformity at different operating conditions was put forward. According to the principle of FOC control, a FOC control software module for ECU was designed. The FOC software module was simulated on ASCET platform. The results show that: Compared with the traditional quantization method, the oil compensation information extracted from crankshaft fragment signal has stronger anti-interference and more accurate parameters. FOC algorithm can accurately reflect the engine's working nonuniformity, and the control of the nonuniformity is reasonable. The compensation fuel amount calculated by FOC is high consistency with the fuel supply state of each cylinder set by experiment, which meets the requirement of accurate fuel injection control of common-rail diesel engine.

scholarly journals Optimization of parameters for diesel shaft speed control system

2019 ◽  
Vol 140 ◽  
pp. 10003
Author(s):  
Vladimir Markov ◽  
Victor Furman ◽  
Sergey Plakhov ◽  
Bowen Sa
Keyword(s):  
High Pressure ◽  
Control System ◽  
Diesel Engine ◽  
High Speed ◽  
Experimental Studies ◽  
Pi Control ◽  
Control Law ◽  
Acceleration Process ◽  
Natural Oscillations ◽  
Fuel Supply

This work presents a fuel supply electronic control system (model ESUVT.01) developed by Dizelavtomatika (Saratov) for the D50 (6 CHN 31.8/33) locomotive diesel engine manufactured by Penzadieselmash. In this system, the fuel supply process is controlled by a high-speed electro-hydraulic valve installed in the high-pressure line of the fuel system. A set of electrically controlled high pressure fuel pumps (mode 4ETN.03) with electro-hydraulic valves for the diesel was manufactured. This system can also control the engine speed. It was noted that the best quality indicators of the speed regulating process are provided by the PID control law. It was shown that for a diesel with high inertia, it is advisable to use the PI control law. Experimental studies were conducted to assess the influence of structure and parameters of this control system on the dynamic qualities of this diesel engine. The object of bench testing was a 1-PDG4D-type diesel-generator from the above-mentioned diesel engine and MPT-84/39 traction generator. The dependences of the duration of the transient process, the overspeed and the period of natural oscillations of the regulated parameter on the PI controller parameters were obtained. The necessity of optimizing the coefficients of proportional (P) and integral (I) components of the PI control law was confirmed. A method for optimizing the coefficients of proportional and integral components of the PI control law was proposed. The optimized coefficients for the transient acceleration process of the diesel engine according to the locomotive characteristic were obtained.

Experimental Studies of the Rotational Speed Automatic Control System for Locomotive Engine Shafts

2020 ◽  
pp. 35-50 ◽  
Author(s):  
V.A. Markov ◽  
V.V. Furman ◽  
S.V. Plakhov ◽  
Bowen Sa
Keyword(s):  
Control System ◽  
Diesel Engine ◽  
Transient Process ◽  
Rotational Speed ◽  
Dynamic Properties ◽  
Experimental Studies ◽  
Operational Mode ◽  
Diesel Generator ◽  
Locomotive Engine ◽  
The Impact

This study addresses the problem of selecting the optimal structure and parameters of an electronic rotational speed controller for the crankshaft of a locomotive engine. An electronic control system of fuel supply ESUVT.01 developed by OOO PPP Dizelavtomatika (Saratov) for the locomotive diesel engine D50 manufactured by OAO Penzadizelmash is presented in the paper. Experimental studies were conducted to evaluate the impact of the structure and parameters of the system on dynamic properties of the engine. Bench tests were conducted on a diesel generator unit 1-PDG4D consisting of a diesel engine D50 and a traction generator MPT-84/39. As the result of the testing, equations describing dependencies of the transient process duration, overspeeding during the transient process and the free period on the parameters of the proportional-and-integral controller were obtained. The study confirmed the need to optimise the values of the coefficients of the proportional and integral components of the proportional-and-integral governing law and adjust them in accordance with the operational mode of the diesel engine. An appropriate optimisation method was proposed. Optimised values of these coefficients for the transient process of the studied diesel engine acceleration with regard to the locomotive characteristic were obtained.

scholarly journals Modelling the effect of continuous mixer operating parameters on mixture quality

2020 ◽  
Vol 164 ◽  
pp. 08009
Author(s):  
Alexey Kaliganov ◽  
Vladimir Konovalov ◽  
Alexey Chupshev ◽  
Vyacheslav Teryushkov
Keyword(s):  
Regression Model ◽  
Research Methodology ◽  
Coefficient Of Variation ◽  
Experimental Studies ◽  
Rotation Frequency ◽  
Operating Parameters ◽  
Kinematic Parameters ◽  
Continuous Mixing ◽  
Working Element

The aim of the research was to obtain a regression model of the influence of some structural and kinematic parameters of a continuous mixer working element on the quality of the prepared mixture. The research methodology included the analysis of the design of the mixing unit and the identification of factors that could significantly affect the quality of the mixture. Later, on the basis of the experimental studies, the quality of the mixture at given values of factors was determined and a regression model was established. The developed functional diagram of a continuous mixing unit made it possible to establish factors that most intensively affected the quality of the prepared mixture. The obtained adequate regression model of the coefficient of variation of the content of the control component in the samples of the mixture indicated an improvement in the quality of the mixture with an increase in the frequency of rotation of the mixers and the number of the arms levels. In terms of quality indicators, a rotation frequency of about 1500 rpm was most preferable with a number of mixer levels of at least 5.

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