Some Ford Ti-VCT engines use BorgWarner's Cam Torque Actuation (CTA) which utilizes the "existing torsional energy in the valve train to rotate the camshaft" instead of traditional oil pressure driven cam phasing.
This allows for improved power and torque, particularly at lower engine RPM, as well as improved fuel economy and reduced emissions. Twin Independent Variable Camshaft Timing ( Ti-VCT) is the name given by Ford to engines with the ability to advance or retard the timing of both the intake and exhaust camshafts independently, unlike the original versions of VCT, which only operated on a single camshaft. That motor has a single cam per bank, so it is dual-equal variable cam timing. The 6.2L V8 introduced in the 2010 SVT Raptor also uses VCT. In addition, the 1.7L Zetec-S engine found in the European Ford Puma was equipped with variable camshaft timing. The 2002-2004 SVT Focus ( ST170 in Europe) also featured VCT, but on the intake camshaft of its modified version of the 2.0L Zetec engine. The 2.0L Zetec Inline-4 used in the 1998-2003 Ford Escort ZX2, Ford Contour, and 99-02 Mercury Cougar used VCT on the exhaust camshaft. VCT is used in Ford's Triton 5.4L 3-valve V8 engine, the Australian Barra 182 and 240 Inline-6s, and Ford's 4.6L 3-valve V8 engine used in the 2006-2010 Ford Explorer and 2005-2010 Ford Mustang GT. Variable Valve Timing Control Solenoid - Repair or Replace A faulty variable valve timing control solenoid, or spool valve, can result in a check engine light accompanied by engine hesitation and pinging under. VCT on the intake camshaft is used primarily for increasing engine power and torque as the PCM is able to optimize the opening of the intake valves to match the engine conditions. (Engines that have VCT on both camshafts are now designated as Ti-VCT.↓) The use of variable camshaft timing on the exhaust camshaft is for improved emissions, and vehicles with VCT on the exhaust camshaft do not require exhaust gas recirculation (EGR) as retarding the exhaust cam timing achieves the same result. The PCM adjusts the camshaft timing depending on factors such as engine load and RPM.įor twin cam or DOHC engines, VCT was used on either the intake or exhaust camshaft. The phaser cavity changes the valve timing by rotating the camshaft slightly from its initial orientation, which results in the camshaft timing being advanced or retarded. The powertrain control module (PCM) transmits a signal to the solenoids to move a valve spool that regulates the flow of oil to the phaser cavity.
These oil control solenoids are bolted into the cylinder heads towards the front of the engine near the camshaft phasers. It uses electronically controlled hydraulic valves that direct high pressure engine oil into the camshaft phaser cavity. It allows for more optimum engine performance, reduced emissions, and increased fuel efficiency compared to engines with fixed camshafts. Variable Camshaft Timing ( VCT) is an automobile variable valve timing technology developed by Ford. Some items may be unavailable for or incompatible with certain trim levels and models.RH side VCT Oil Control Solenoid and harness from a Ford 4.6L SOHC 3V V8 engine Product appearance and specifications are subject to change without notice. There may be some variances between the photos shown and the actual product. Photos are for illustration purposes only. We are not responsible for any errors or omissions on this website. Although we endeavour to ensure that the information contained on the website is accurate, as errors may occur from time to time, customers should verify any information in question with a dealer. Unless otherwise indicated, all prices exclude applicable taxes and installation costs. Use of any Volkswagen intellectual property including, but not limited to logos, vehicle designs, any confusingly similar variations or photography thereof, without the express written consent of Volkswagen, may violate state and federal law, is misleading to the public and constitutes a misappropriation of the goodwill and reputation developed by the Volkswagen Group. Please verify any information in question with a sales representative. While every reasonable effort is made to ensure the accuracy of this data, we are not responsible for any errors or omissions contained on these pages. If you notice decreased fuel economy, chances are that the variable valve timing sensor or some other part of the VVT system is failing.
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