The Need for New Measurement Capabilities
In the complicated matrix of oil flow passages in a diesel engine, little is typically known about the actual oil flow through different passages within the crankshaft and connecting rods. Typically, oil pressure in the main block gallery is monitored, and assumptions are made that the flow is sufficient to the bearings. These flows are critical to the lubrication of crankshaft main bearings, rod journal bearings, and piston pin bearings.
The oil flow through a connecting rod for a…
Transducer development driven by customer need for new measurement capabilities
The design of the piston pin bore, the piston pin, and the small end of the connecting rod which the pin passes through, are all interrelated. In a floating pin design, the pin rotates freely within the rod and the pin bore. This prevents excessive wear on the pin in one location, and spreads the wear on the pin around the entire circumference of the pin surface, dramatically increasing its service life.
There are multiple factors which can affect pin…