swift sport VVT

[neilspeed___]

does anyone know at what rpm the VVT engages in a manual Swift Sport ?

[chris1388]

I think its around 4500 boy....but don't be sitting there waiting to hear some kind of distinct change in the note of the exhaust like VVL or Vtecor an insane burst of power lol.....the car will just rev with a bit more urgency

[pete]

In the 1.5 it's 3500 rpm

[ng357]

from my auto is 4000 das in d swift sport

[chris1388]

Ignis sport is 4100

[neilspeed___]

thanks

[BLUE_CP9A]

Between 3900 - 4100 rpm on Manual SSS, WOT

[Ignorant Ignis]

Ignis sport is 4100

it actually hits peak TQ at 4100 but the vvt comes in at 3800-3900rpm

[Alpha_2nr]

^^VVT in the M series engines doesn't actually "engage" or "disengage" like VTEC.

It's always there....operating AFAIK.

It's just that the power band in the Swift Sport is adjusted by the VVT capability (which is continous) to be more "bolstered" by the VVT function past 4000 or so rpm.

[pete]

On the dyno there's a definite, sudden increase in torque at 3500rpm on the 1.5 swift. I'm not sure about the others.

(on the road I feel a slight increase more around 4000 on the tach tho)

[chris1388]

I want to agree with alpha as well....its continuously adjusting/varying the intake valves according to throttle input....but then i agree with pete too because my car also gives a bump in the tq curve around 4100rpms

[BLUE_CP9A]

Camshaft Position Control (VVT Variable Valve Timing)

System Description S7RS0B1401002

System Description


The VVT system is an electronic control system which continuously vary and optimize the intake valve timing in
response to the engine operating condition.
The optimized intake valve timing produce such an air intake with high efficiency that both the higher power generation
and lower fuel consumption can be attained in the whole engine speed range from low to high. In the area of the
average engine load, low emission of nitrogen oxides (NOx) and high fuel efficiency can also be attained by making
the valve opening overlap between the intake and exhaust valves longer.
For the brief of the system operation, the intake valve timing is varied by the cam timing sprocket (1) which varies the
rotational phase between the intake camshaft (3) and sprocket. The rotor (2) in the cam timing sprocket is actuated by
switching or adjusting the hydraulic pressure applied to the chambers for the timing advancing (7) and/or retarding (6).
To switch or adjust the hydraulic pressure appropriately, ECM operates the oil control valve (12) with detecting the
engine speed, intake air value, throttle opening, engine coolant temperature and camshaft position (angle).