Injector and valve train friction studies: Cummins L-10 engine

Technical Report · Thu Feb 15 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6619340· OSTI ID:6619340

Mitchell, R R; Patterson, D J

This report discusses measurement techniques developed and experimental results obtained for a valve and injector train friction study supported by the US Department of Energy. The incentives for this research are the higher injector train forces and potential friction problems associated with advanced technology diesel engines. As a convenient way to begin the program, the instrumentation was developed around the exhaust valve of cylinder number 1. Results are presented for that valve in a motored Cummins L-10 engine. The instantaneous cam/roller friction force was determined from the instantaneous roller speed and the pin friction torque. Measured as well were the pushrod force and displacement. Friction work loss was determined for both the cam and roller interface as well as the upper valve train. Future efforts will address the injector train and a fired engine with advanced technology components. 23 figs.

• Research Organization: Michigan Univ., Ann Arbor, MI (USA). Dept. of Mechanical Engineering and Applied Mechanics
• Sponsoring Organization: DOE/CE
• DOE Contract Number: FG02-88CE90025
• OSTI ID: 6619340
• Report Number(s): DOE/CE/90025-2; ON: DE90017288
• Country of Publication: United States
• Language: English

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ACCELERATION
ALLOYS
CALIBRATION
CERAMICS
COMPUTER CODES
COMPUTER PROGRAM DOCUMENTATION
CONTROL EQUIPMENT
DATA ACQUISITION SYSTEMS
DESIGN
DIESEL ENGINES
DOCUMENT TYPES
ENERGY CONSUMPTION
ENGINES
EQUIPMENT
EVALUATION
FLOW REGULATORS
FRICTION
FUEL CONSUMPTION
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
IRON ALLOYS
IRON BASE ALLOYS
LOSSES
LUBRICANTS
MEASURING METHODS
MODIFICATIONS
MONITORING
PERFORMANCE TESTING
PISTONS
PRESSURE EFFECTS
PROGRESS REPORT
STEELS
TECHNOLOGY ASSESSMENT
TEMPERATURE EFFECTS
TESTING
TORQUE
V CODES
VALVES
VARIATIONS
VELOCITY
WEAR