1988-02-01

Optimisation of Crankshaft Seals for Diesel Engines - A Comparison of an Optimised Flyorpolymer Line-Contact Type Seal with the PTFE Sleeve Type Seal 880300

The sealing of diesel engine crankshafts -a comparison of PTFE and fluorpolymerRadial lip seals have been successfully used for decades for the sealing of crankshafts. Since the introduction of fluorpolymers most demands have been mastered. Several factors - less oil-changes, turbocharging and higher truck engine performance - have led to disturbance of the sealing process arising from the deposition of oil residues in the sealing gap. Knowing the reasons for this disturbance, namely the high specific thermal demand placed upon the medium in the sealing gap, helps in finding preventative measures. A seal with hydrodynamic sealing aids in conjunction with a sliding element based on PTFE which has a low coefficient of friction reduces considerably the specific thermal demand. Both sealing systems are compared on the basis of test results and indications made of the questions remaining to be answered.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X