A Study of Characteristics at the End of Injection in Diesel Engine Fuel System : 1st Report, Analysis of Pressure Drop on Pump Side

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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Computational Analysis of the Groove Effect to Reduce the Cavitation in Ball Valves

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.629.414 ◽

2014 ◽

Vol 629 ◽

pp. 414-419

Author(s):

N.S.B. Yusof ◽

Azmin Shakrine Mohd Rafie ◽

M.K.A. Ariffin ◽

N. Othman

Keyword(s):

Pressure Drop ◽

Computational Analysis ◽

Current Method ◽

Ball Valve ◽

Engineering Industry ◽

Engine Fuel ◽

Fuel System ◽

Average Performance ◽

Cavitation Intensity

Cavitation is a phenomenon that frequently creates fear within the engineering industry as the violent and critical attacks by cavitation can cause a lot of damage to ball valves. This paper is presented to reduce the risk of cavitation attack due to dramatic pressure drop and to demonstrate the ball valve performance. The ball valve with grooves was simulated and compared with current method under same boundary conditions as with existing experimental of ball valves. The proposed device can be operated in aircraft to isolate the fuel system and the engine fuel system after engine shutdown or emergency. The proposed implementation has successfully shown to eliminate the dramatic pressure drop effects to the ball valve. In the case study, at a closing angle of 40° at which violent cavitation occurs, the ball valve showed increasing cavitation intensity performance to 0.3 or 30%. The average performance of the cavitation index for all cases also increased to 24%.

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Multi-criteria fuel system optimization with an electronic control unit

Combustion Engines ◽

10.19206/ce-2017-108 ◽

2017 ◽

Vol 168 (1) ◽

pp. 51-55

Author(s):

Aleksander WRÓBLEWSKI

Keyword(s):

Diesel Engine ◽

Electronic Control Unit ◽

Quality Criteria ◽

Control Unit ◽

System Optimization ◽

Optimization Method ◽

Engine Fuel ◽

Fuel System ◽

Common Rail System ◽

The Common

This paper presents the results of the multi-criteria synthesis of a diesel engine fuel system using the optimization method. The optimization criteria, functional restrictions and quality criteria have been selected. The efficiency of the proposed method was demonstrated using the example of a diesel engine with the Common Rail system.

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