The Challenging World of 12/9/6

摘要

"In the past few years, we have noted more changes to engine design and the types of fuels available than we experienced in the last 20 years. Simply put, emissions regulations are having a bigger impact on filtration than previously imagined." That statement in Donaldson Filtration Solutions' whitepaper, Fuel Filtration Reality Check, succinctly points out that filtering diesel fuel for use in Tier 4-Final engines is a serious issue. The microscopic tolerances in electronic fuel injectors used in high-pressure/common-rail (HP/CR) fuel systems-prevalent in Tier 4 engines and operating at pressures of 30,000 psi or more-are intolerant of even minuscule bits of dirt.