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OGV Clean Fuel Regulation Investigation of Operational Issues Preliminary Findings

Report

Title: OGV Clean Fuel Regulation Investigation of Operational Issues Preliminary Findings
Publication Date:
Journal:
California Maritime Academy, Vallejo, CA
Pages:
38
Publisher:
California Air Resources Board
Fuels Group:
Heavy Fuel Oil (HFO), Marine Gas Oil (MGO), Marine Diesel Oil (MDO)
Fuel Blends Mentioned?
Yes
Feedstocks Group:
Fossil-derived Hydrocarbons
Pathways Group:
Unspecified Pathway
Topics:
Engine Testing and Performance, Codes, Standards and Regulation
Vessel Segment:
Ocean-going Vessels
Language:
English

Document Access

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Document Source
Attachment:
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Citation

Jackson, K. (2011). OGV Clean Fuel Regulation Investigation of Operational Issues Preliminary Findings.
TY - RPRT
TI - OGV Clean Fuel Regulation Investigation of Operational Issues Preliminary Findings
AU - Jackson, K
AB - Some operators have reported operational difficulties that may be related to fuel switching from heavy fuel oil to distillate fuel. Shipboard issues that are potentially related to the use of distillate fuel under the ARB ship fuel regulation include: 1) vessel stalling, 2) variable engine speed at low loads, 3) difficulty starting, and 4) inability to operate at full cruise speed. Based on the available information, CMA Technical Staff believes that heating of the distillate fuel resulting in viscosity below the recommended minimum level, often combined with other factors, was the cause of most operational difficulties associated with the usage of low sulfur distillate fuel. The other factors include: (1) worn fuel system equipment, such as fuel pumps or seals; (2) engine adjustments not optimized for the use of distillate fuels such as rack or governor settings; and (3) operational procedures not optimized for the use of distillate fuel. The use of a low viscosity distillate fuel combined with worn high-pressure fuel pumps resulted in inadequate fuel injection pressures. Loss of propulsion can result under these circumstances, due to excessive leakage of fuel within the high-pressure fuel pumps. Excessively worn or leaking pumps can result in low fuel injection pressures and incomplete combustion.
DA - 2011/01//
PY - 2011
SP - 38
UR - http://pubs.acs.org/doi/abs/10.1021/es802413j
LA - English
KW - Fossil-derived Hydrocarbons
KW - Heavy Fuel Oil (HFO)
KW - Marine Gas Oil (MGO)
KW - Marine Diesel Oil (MDO)
KW - Unspecified Pathway
KW - Engine Testing and Performance
KW - Codes, Standards and Regulation
KW - Ocean-going Vessels
ER -
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Abstract

Some operators have reported operational difficulties that may be related to fuel switching from heavy fuel oil to distillate fuel. Shipboard issues that are potentially related to the use of distillate fuel under the ARB ship fuel regulation include: 1) vessel stalling, 2) variable engine speed at low loads, 3) difficulty starting, and 4) inability to operate at full cruise speed. Based on the available information, CMA Technical Staff believes that heating of the distillate fuel resulting in viscosity below the recommended minimum level, often combined with other factors, was the cause of most operational difficulties associated with the usage of low sulfur distillate fuel. The other factors include: (1) worn fuel system equipment, such as fuel pumps or seals; (2) engine adjustments not optimized for the use of distillate fuels such as rack or governor settings; and (3) operational procedures not optimized for the use of distillate fuel. The use of a low viscosity distillate fuel combined with worn high-pressure fuel pumps resulted in inadequate fuel injection pressures. Loss of propulsion can result under these circumstances, due to excessive leakage of fuel within the high-pressure fuel pumps. Excessively worn or leaking pumps can result in low fuel injection pressures and incomplete combustion.