The cam phaser generates its own internal pressure rather than relying on oil pump pressure to move the cams. On the 2009 Fusion, a new type of VVT system called “Cam Torque Actuated” (CTA) is used to advance cam timing.
A Variable Valve Timing (VVT) with electronic throttle control for the 2003-’06 Lincoln LS, 2003-’06 Jaguar X-Type applications, 2006 Ford Fusion, Mercury Milan and Lincoln Zephyr, and 2009 Ford Escape.A more powerful 232 hp version for the 2000-’05 Lincoln LS, Jaguar AJ30 and S-Type, Mazda 6 and MPV, and 2005 Ford Five Hundred, Mercury Montego and Ford Freestyle with direct-acting mechanical bucket tappets.A 208 horsepower version with roller finger followers for the Taurus and Sable, and the 2001 and later Ford Escape and Mazda Tribute.Over the years, this engine has undergone continual evolution and has been produced in several variations, including: The dual overhead cams on the Duratec engine are chain driven, so there’s no timing belt to replace. The coil is mounted on the front valve cover, and the firing order is 1-4-2-5-3-6. The 3.0L Duratec engine has Sequential Multiport Fuel Injection (SFI), and an upper and lower intake manifold with electronically controlled Intake Manifold Runner Control (IMRC) that varies intake air velocity for improved low-end torque, and a single coil distributorless ignition system (DIS) that fires two spark plugs simultaneously (waster spark). Both engines have the same 79.5 mm stroke crankshaft, but the 3.0L engine has larger cylinder bores (89 mm versus 82.4 mm in the 2.5L Duratec). It is essentially a larger version of the 2.5L Duratec 60° V6 that was introduced in the 1994 Ford Contour and Jaguar X-Type.
0 kommentar(er)
