Cita:
Empezado por Gonzalo Bravo
Como, trae dos ECU? una para la caja y otra para el motor'???
|
No, una sola, pero si quieres sacar el motor hay que emular la señal de la caja, pero si quieres usar la caja tienes que usar la ECU del motor.
TRANSMISSIONS
A340F (4WD)
1. electronically-controlled 4 spd automatic
2. sim to current 4AT in V6 4Runner, Tundra, Tacoma
Engine Type : 1GR-FE 4.0L V6
Drive Train : 4WD multi-mode
Transmission : A340F
Gear Ratio (counter gear ratio included)
1º : 2.804
2º : 1.531
3º : 1.000
4º : 0.705
R : 2.393
Transfer Case Reduction Ratio : 2.566
Final Drive Ratio : 3.909
TRANSFER CASES
A. VF4AM (V6) & VF4BM (V8)
1. Both types are all new designs –
a. 2-speed planetary w/ 2.566 Low range for off-road use
b. 2” shorter, 5 lbs lighter than previous transfer case
c. increased torque capacity over previous models
2. world’s 1 st application of a Torsen limited-slip center differential in a mid-SUV transfer case
a. center differential lockable by driver selection in H4 or L4
1) for maximum traction on extremely slippery or uneven surfaces
b. the Torsen worm gears transfer torque to the carrier during the transition between static, front-bias, and rear-bias conditions:
c. once worm gears develop axial thrust, they apply pressure to 2-disc clutch packs on each end
1) clutches transmit torque directly through the carrier as long a axial thrust (traction difference) continues
2) maintain fixed torque-split until drive torque is reduced
d. static rear-drive bias favors stable tracking on- or off-road, decelerating or accelerating
1) Static ft:rr torque split of 40:60% is determined by the ratio of the radii of the sun gear (inner that drives the front wheels) and the ring gear (outer gear that send torque to the rear axle)
2) three dynamic torque split ratios depending on available traction:
a) static torque split favors the rear 40:60% when both axles have equal traction;
b) when front wheels begin to slip, the difference in ft:rr torque causes up to 70% of torque to be sent to the rear wheels;
3) when rear wheels slip, up to 53% of torque is directed to the front wheels.
3. V6 VF4AM:
a. shift-on-the-fly multi-mode
1) H2, H4, H4L, L4, L4L
b. double motor-drive actuator
c. low-range & diff lock (w/ synchro)
d. Automatic disconnecting front differential (ADD)