Accession Number:

ADA104435

Title:

Development of Diesel Engine Diagnostics for U.S. Coast Guard Cutters.

Descriptive Note:

Final rept. Sep 76-Aug 80,

Corporate Author:

SOUTHWEST RESEARCH INST SAN ANTONIO TX

Personal Author(s):

• Storment,J. O.
• Benson,H. S.

Report Date:

1981-07-01

Pagination or Media Count:

83.0

Abstract:

This program involved an investigation of techniques to perform engine fuel diagnosis on the large medium-speed diesel engines used as main propulsion power plants in medium- and high-endurance Coast Guard cutters. Two engine diagnostic parameters were defined and selected as the parameters of interest. They were 1 Instantaneous Crankshaft Angular Velocity ICAV, which directly relates to the developed power contribution for each cylinder and 2 Dynamic Crankcase Pressure PKD, which relates to the amount of gas leakage past the piston rings and into the crankcase. Prototype instrumentation was designed and developed to measure relative values of these parameters, and tests were conducted with several operating engines, some of them in Coast Guard cutters. Results of the development and test work were generally encouraging, but not definitive. This effort is therefore viewed as a step toward achieving the program goals. The report contains recommendations for further work. Author

Descriptors:

• *DIESEL ENGINES
• *DIAGNOSTIC EQUIPMENT
• LEAKAGE(FLUID)
• GASES
• PRESSURE
• DATA ACQUISITION
• DIAGNOSIS(GENERAL)
• POWER
• TORQUE
• FAULTS
• ENGINE CYLINDERS
• COAST GUARD SHIPS
• CRANKSHAFTS
• WAVE ANALYZERS
• CRANKCASES
• MARINE ENGINES

Subject Categories:

• Marine Engineering
• Test Facilities, Equipment and Methods
• Reciprocating and Rotating Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE