scholarly journals Investigations of a D10 laboratory Farymann Diesel engine by means of a Langmuir probe

2013 ◽  
Vol 153 (2) ◽  
pp. 75-82
Author(s):  
Zbigniew Korczewski ◽  
Jacek Rudnicki ◽  
Leszek Piechowski ◽  
Adam Cenian
Keyword(s):  
Comparative Analysis ◽  
Diesel Engine ◽  
Langmuir Probe ◽  
Angular Position ◽  
Precise Determination ◽  
Injection System ◽  
Engine Fuel ◽  
Feed System ◽  
Working Space

A precise determination of the crankshaft angular position, at which the self fuel ignition occurs in a diesel engine, enables a credible diagnosis of the technical condition of the engine working space as well as the fuel feed system. An observation of the Langmuir probe signal provides entirely new possibilities for engine diagnostics. The probe is introduced into the working space of a cylinder through its indicator valve. This paper presents preliminary results of diagnostic tests performed on a D10 type Farymann Diesel engine. The main aim of the investigations was to confirm the diesel engine control susceptibility to the applied, original measuring method that enables a precise determination of the crank-shaft angle, under which the fuel self-ignition occurs. In order to verify the diagnostic results, simultaneous measurements have been conducted of the cylinder pressure as well as vibrations (measured on the cylinder head cover or its mounting bolts) generated by the engine fuel injection system and the valve timing system. A satisfactory qualitative and quantitative agreement of the recorded control parameters has been obtained using a simplified comparative analysis. The results showed that further upgrade of the diagnostic method as well as the computer software is necessary in order to synchronize all the monitored variables and enable a comparative analysis in relation to the angular crankshaft position.

A Survey of Analysis, Modeling, and Diagnostics of Diesel Fuel Injection Systems

2016 ◽  
Vol 138 (8) ◽  
Author(s):  
Tomi R. Krogerus ◽  
Mika P. Hyvönen ◽  
Kalevi J. Huhtala
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Power Plants ◽  
Fuel Injection ◽  
High Reliability ◽  
Injection System ◽  
Engine Fuel ◽  
Injection Equipment ◽  
Diesel Fuel Injection

Diesel engines are widely used due to their high reliability, high thermal efficiency, fuel availability, and low consumption. They are used to generate power, e.g., in passenger cars, ships, power plants, marine offshore platforms, and mining and construction machines. The engine is at heart of these applications, so keeping it in good working condition is vital. Recent technical and computational advances and environmental legislation have stimulated the development of more efficient and robust techniques for the diagnostics of diesel engines. The emphasis is on the diagnostics of faults under development and the causes of engine failure or reduced efficiency. Diesel engine fuel injection plays an important role in the development of the combustion in the engine cylinder. Arguably, the most influential component of the diesel engine is the fuel injection equipment; even minor faults can cause a major loss of efficiency of the combustion and an increase in engine emissions and noise. With increased sophistication (e.g., higher injection pressures) being required to meet continuously improving noise, exhaust smoke, and gaseous emission regulations, fuel injection equipment is becoming even more susceptible to failure. The injection systems have been shown to be the largest contributing factor in diesel engine failures. Extracting the health information of components in the fuel injection system is a very demanding task. Besides the very time-consuming nature of experimental investigations, direct measurements are also limited to selected observation points. Diesel engine faults normally do not occur in a short timeframe. The modeling of typical engine faults, particularly combustion related faults, in a controlled manner is thus vital for the development of diesel engine diagnostics and fault detection. Simulation models based on physical grounds can enlarge the number of studied variables and also obtain a better understanding of localized phenomena that affect the overall behavior of the system. This paper presents a survey of the analysis, modeling, and diagnostics of diesel fuel injection systems. Typical diesel fuel injection systems and their common faults are presented. The most relevant state of the art research articles on analysis and modeling of fluid injection systems as well as diagnostics techniques and measured signals describing the behavior of the system are reviewed and the results and findings are discussed. The increasing demand and effect of legislation related to diagnostics, especially on-board diagnostics (OBD), are discussed with reference to the future progress of this field.

scholarly journals Impact of diethyl ether in blends with diesel fuel on acceleration process of the diesel engine

2018 ◽  
Vol 19 (12) ◽  
pp. 411-414
Author(s):  
Wincenty Lotko ◽  
Krzysztof Górski ◽  
Jerzy Stobiecki
Keyword(s):  
Diesel Engine ◽  
Diethyl Ether ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Negative Impact ◽  
Chemical Properties ◽  
Diesel Oil ◽  
Injection System ◽  
Acceleration Process ◽  
Engine Fuel

The paper presents results of the crankshaft acceleration process of the diesel engine fuelled with diesel oil - diethyl ether blends. In particular mixtures of diesel fuel with addition of 5, 10, 15 and 20 % by volume were tested. Results confirmed that DEE addition has negative impact on acceleration process of the AD3.152 engine. However it should be pointed that tests were carried out for nominal settings of the engine fuel injection system. It means that these settings were not optimal for tested blends with different physico-chemical properties compared to regular diesel fuel.

Design HMI (Human Machine Interface) for Process Control System of Main Diesel Engine Fuel System

2018 ◽  
Vol 874 ◽  
pp. 88-95
Author(s):  
Danang Cahyagi ◽  
Indra Ranu Kusuma ◽  
Adi Kurniawan
Keyword(s):  
Diesel Engine ◽  
Settling Tank ◽  
Initial Step ◽  
Circulation System ◽  
Automation System ◽  
Engine Fuel ◽  
Fuel System ◽  
Feed System ◽  
Marine Diesel ◽  
Ship Classification

Controlling and monitoring of ship fuel treatment system is based on the needs of safety and business. Therefore, ship automatic fuel system is a support system recommended by ship classification society, engine manufacture, and shipping company. The new system may give highly efficiency operation and supervision. In this research, we developed marine diesel fuel system interface to monitor how the systems work. Main diesel engine fuel system consist of transfer system, separation system, feed system, and circulation system. The aim of this research is to control and display the shipboard fuel system. All valves, pumps, and separator units were controlled by programmable logic controller using tank level switches as input signal. We have tested this automation system with a computer simulations. As an initial step, valves, pumps, and separator units are successfully controlled and displayed. Based on program simulation, the operational leading time of settling tank and day tank are one hour and 9,8 hours, respectively. It is mean both of one settling tank or day tank are ready before the another tank empty. This system also have detection ability due to system failure.

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