National Oil & Lube News

May 2017

Digital issues of National Oil & Lube News, the trade magazine for the preventive maintenance industry

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Page 51 of 83

50 NOLN | VIEWPOINT Selling is Educating Unintended Consequences Drive GDI Engines to Your Shops – Part 7 by Amber Kossak with Owen Heatwole We heard your request and dove into turbu- lent waters to provide a listing of gasoline direct injection (GDI) engine appearances. For years, we've asserted that an educat- ed buyer is our best customer. is is crit- ical for industry growth because otherwise customers go elsewhere. Informed custom- ers sometimes tell friends they know more than an intended service provider. With solid information backed by effective ser- vice, you build your reputation while capi- talizing on service opportunities. Your Request Many of you have asked, "When did the millions of GDI engines start to appear?" OEMs rushed GDI engines to market in an attempt to meet federally-mandated CAFE standards. As these engines age, un- intended consequences increase and they appear in shops needing service. According to Bosch, "[GDI] does change the repair process and maintenance pro- gram." To retain customers service providers need to know a GDI engine and address GDI service issues. Turbulent Waters Ever wonder why you seldom come across GDI engine listings? at's likely because manufacturers change GDI designs fre- quently; while engine designs typically remain for a decade or more, we see GDI designs changed, or eliminated, in half that time or less. With millions of GDI engines needing service, lack of knowledge both sends cus- tomers away and confirms negative indus- try opinions. Understanding that readers can't always follow frequent GDI design changes, we'll tell you how to positively identify GDI en- gines and provide best-available GDI en- gine introduction dates. Ford introduced their flagship 3.5L V6 Ecoboost for the F-150 in 2011. e first class-action lawsuit surfaced in 2013 along with reports of excessive intake valve de- posits at low mileage. So in 2017, Ford in- troduced a completely redesigned 3.5-liter V6 Ecoboost engine, sharing only name and displacement with the previous engine. It's a clean-sheet design change including a new block, cylinder heads and turbos in ad- dition to a new intake system. When OEMs update or replace engine designs, where do the faulted engines go? Do they drive themselves to a secret grave- yard and disappear forever? Of course not; these engines live on and may enter shops for many years. Due to increased intake valve deposits — GDI provides no intake port fuel for deter- gents to wash intake valves — shops now encounter engines with both GDI and port fuel injection (PFI). (Fig. 1.) Examples of dual-injection (GDI and PFI) engines: • Toyota – D-4S engines • Lexus – 2GR-FSE engines • Ford – 2017 3.5-liter V6 Ecoboost en- gines • Audi – EA888 engines (also used by e VW Group) GDI Engine Introduction Dates Between model years 2009 to 2015, the percentage of new vehicles sold with GDI engines jumped from 5 to 46 percent. Here is some condensed info from best-available sources. • 1902-WWII – GDI engines cut their teeth in high-performance aircraft. Invented by French engineer Leon Le- vavasseur, these engines made their mark in war planes. • 1955 – e Mercedes-Benz 300SL claimed fame with the first production four-stroke GDI engine. • Years following – factors including "… deposit problems, which could not be overcome at the time" (SAE Paper 1999-01-3690) reduced commitment to expensive GDI technology. • 1996 – As engine control module tech- nology advanced, GDI appeared in the Japanese market with the Mitsubi- shi 1.8L inline four, followed by their six-cylinder power plant. • 1996-2001 – Mitsubishi produced more than one million GDI engines for a variety of brands, and in 2001 claimed a trademark for the acronym "GDI" with an uppercase "I." Figure 1 Figure 2 GDI + PFI – Toyota D-4S GM EcoTec - GDI Fuel Pump Steel Line

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