Focus 1.6 Ti-VCT ... how does it work?

[plfrench]

Guys,

With your wealth of Ford knowledge, I wonder if you can tell me what sort of system this variable timing is?? Is it like VTEC where there is a "change" point where the profile swaps from economy to power?

Cheers,

Paul.

[Jon GT2]

The new engine – rated at 115PS – uses twin variable camshaft timing to generate more power than the 1.6-litre Duratec 100PS engine in the Focus range. Although torque is only marginally higher – 155 Nm at 4,200 rpm compared to 150 Nm at 4,000 rpm for the current 1.6-litre Duratec – the strength of the twin variable camshaft timing system is in the significant broadening of the torque band. At 2,000 rpm, the Duratec Ti-VCT engine already offers almost the same torque as at its peak level around 4,000 rpm. The torque band is very broad, similar to that of powerful turbo engines. Overall, these torquey characteristics mean that the Duratec Ti-VCT is a very responsive and powerful small engine, yet it consumes less fuel due to the efficiencies VCT delivers.

The Duratec Ti-VCT is capable of continuously varying the timing of both the intake and exhaust camshafts for optimal airflow, controlled by the Engine Control Unit (ECU). Oil pressure-driven rotor units adjust the angle of the camshaft relative to the cam sprockets to alter valve opening. At low engine speed, the ECU leaves the camshafts in their default position for optimal start-up performance. As engine speed increases, the ECU adjusts cam timing for better airflow, ensuring optimal performance and economy.

Direct qoute from Media.Ford.com

[plfrench]

Thanks for that Jon! As useful as ever.

The Father-In-Law had just bought a 56 plate and the garage that sold it to him thought it was the 100ps. He subsequently found out that it was the 115ps and was wondering about what the difference was.

Cheers,

Paul.

[Jon GT2]

No problem Paul,the Ti goes quite well when pushed but isnt too good on fuel when you do.Reliability seems very good so far much better than the old St170 unit.I'm sure he will find it to be a very good car.