Benefits With Common Rail Injection for Medium Speed Engines

2003 ◽  
Author(s):  
Udo Schlemmer-Kelling ◽  
Thomas Montag
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Technical Conference ◽  
Common Rail ◽  
Nox Emission ◽  
Common Rail System ◽  
Port Authorities ◽  
Medium Speed ◽  
Common Rail Injection

The NOx emission of sea going ships is limited by the IMO. The black smoke emission is in the focus of the port authorities and the ship owners. More stringent limits are expected for the near future. Caterpillar Motoren decided to be pro active and to start an emission reduction program in the mid of the nineties. Inside the engine technology like: higher compression ratio, Miller Cycle, injection tuning and internal exhaust gas recirculation were investigated to reduce the NOx Emission. To lower the soot emission a Common Rail system was implemented. The effects of Pre-, Post- and Split injections were optimized for further emission reductions. A special trim of the injection characteristic can improve the transient load acceptance of the engine. A low emission strategy was defined.   NOTE: This paper was presented at the ASME 2003 Internal Combustion Engine Division Spring Technical Conference but was printed in the ASME 2003 Internal Combustion Engine and Rail Transportation Divisions Fall Technical Conference proceedings, pages 443–454. It should appear under the CIMAC heading.

scholarly journals Integrated decision support system for acoustic diagnostics in the technical state of the internal combustion engine

Mechanik ◽  
2017 ◽  
Vol 90 (7) ◽  
pp. 574-576
Author(s):  
Adam Deptuła ◽  
Piotr Osiński
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Acoustic Properties ◽  
Combustion Engines ◽  
Game Tree ◽  
Common Rail System ◽  
Tree Structures ◽  
Acoustic Diagnostics

Presented are possible applications of acoustic diagnostics in inspecting the technical condition of an internal combustion engine with autoignition on the example of the Fiat drive unit with common rail system. As a result of measuring the sound pressure level for specific faults and comparing the noise generated by the motor running smoothly, the detailed maps of changes in the acoustic spectrum are possible to generate. These results may be helpful in the future diagnostics of internal combustion engines. The results of scientific work in the area of research, design and operation of internal combustion engines, conducted at the Department of Automotive Engineering, in cooperation with the Laboratory of Hydraulic Drives & Vibroacoustics of Machines at the Wroclaw University of Technology are included. It has developed an authoritative method of identifying the type of engine damage using game-tree structures. An integrated decision system for induction machine learning was developed to test and identify acoustic properties.

Cost Effective Engine Strategies for Future Off-Highway Emissions Limits

2003 ◽  
Author(s):  
H. D. Freeman ◽  
G. G. Sharman ◽  
C. H. Such ◽  
A. J. Nicol ◽  
G. B. Weller
Keyword(s):  
Conference Proceedings ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Cost Effective ◽  
Internal Combustion ◽  
Technical Conference ◽  
Rail Transportation ◽  
Tier 3

This paper reviews the options available to the engine manufacturer to comply with US off-highway Tier 3 emissions limits and beyond. The most cost-effective solutions are considered and discussed. Possible technical scenarios for the longer-term development of off-highway engines are reviewed.   NOTE: This paper was presented at the ASME 2003 Internal Combustion Engine Division Spring Technical Conference but was printed in the ASME 2003 Internal Combustion Engine and Rail Transportation Divisions Fall Technical Conference proceedings, pages 419–426. It should appear under the Application and Operation heading.

scholarly journals Method of determining the single and two-part fuel dose injection in the Common Rail system of marine combustion engine

2014 ◽  
Vol 156 (1) ◽  
pp. 13-19
Author(s):  
Leszek PIASECZNY ◽  
Mirosław WALKOWSKI
Keyword(s):  
Combustion Engine ◽  
Common Rail ◽  
Dose Selection ◽  
Common Rail System ◽  
Injection Process ◽  
Fuel Delivery ◽  
Rail Systems ◽  
Medium Speed ◽  
Cr System ◽  
Selection Of

Marine combustion piston engines are more often equipped with common rail systems, which provide multi-part injection fuel delivery to the cylinder. Dose selection must take into account, among others, its duration, the engine speed and load torque. Practical use of a specific fuel dosing is usually preceded by a study on the test stand simulating the injection process and its dependence on the dose parameters. The authors have presented a method for the selection of these parameters in the case of one-and two-part injection in the medium speed marine engine. There has been presented the manner of creating a mathematical model of the fuel dosing during the injection and research of its characteristics in order to optimize the selection of the amount of fuel, that can be applied in the design of the CR system in the marine combustion engines.

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