JENA PLISSKEN
08-10-2006, 12:27
Honda Legend presenta un si*stema di trazione integrale di se*rie in grado di migliorare le pre*stazioni in curva. L’inedito siste*ma di trazione integrale svilup*pato da Honda appositamente per la sua ammiraglia è denomi*nato SH-AWD (Super Handling All-Wheel Drive). Il sistema au*menta la velocità di rotazione della ruota posteriore esterna durante la sterzata veloce per consentire al veicolo di affronta*re la curva con maggiore facilità. Questa tecnologia migliora quin*di sensibilmente la tenuta trami*te una sovrasterzata perfetta*mente bilanciata nelle curve più strette. Mentre la guida in rettili*neo e la sterzata a velocità mode*rata forniscono fino al 70% della coppia alle ruote anteriori, la pie*na accelerazione e la guida spor*tiva trasmettono il 70% della cop*pia disponibile alle ruote poste*riori. La tecnologia consente di migliorare anche la sicurezza in curva. Il sistema SH-AWD viene attivato appena il conducente ap*plica una pressione eccessiva sui freni in curva; determina inoltre una variazione nella distribuzio*ne della potenza alle singole ruo*te, in modo da mantenere costan*te la stabilità di guida entro i li*miti fisici consentiti. combinazione di lusso elegan*te e design pulito ed efficiente che crea un ambiente in armo*nia con il carattere sportivo della vettura. Allo stesso tem*po,
Sembra interessante
VIDEO (http://world.honda.com/HDTV/news/2004-4040401a/)
http://www.autozine.org/technical_school/traction/SH_AWD.jpg
http://www.autozine.org/technical_school/traction/SH_AWD_cutaway.jpg
Honda's SH-AWD system is unique in the industry. It does not have any center differential or any limited-slip differential. All the mechanicals is mounted at the rear axle. The drive from propeller shaft is sent to an accelerator first. The latter uses planetary gears to step up the rotation speed, creating a speed difference between the input and output shaft. By applying electromagnetic clutches, the speed difference can transfer driving torque to the rear axle.
The electromagnetic multi-plate clutches are mounted behind the accelerator. There are 2 clutches, each responsible for one rear wheel. When the right clutch engage, more torque will be sent to the left rear wheel via the conventional differential. Vice versa, engage the left clutch will transfer more torque to the right rear wheel. (This theory is the same as Mitsubishi's Active Yaw Control) When both clutches engage, more torque will be sent to the rear axle. In this way, SH-AWD can very the torque split between front and rear axle, as well as between the rear wheels.
For Honda Legend equipped with SH-AWD, it normally runs with 70% torque distributed to the front wheels. Under acceleration and braking, up to 70% may be sent to the rear axle to generate more traction. During cornering, to reduce understeer, more torque will be distributed to the outside rear wheel. At extreme cases, the outside rear wheel can take 70% of the engine output, while the inside rear wheel 0% and the front wheels get the remaining 30%. When braking into corners, to correct the tendency of oversteer, more torque will be distributed to the inside rear wheel, taking advantage of the engine braking to reduce oversteer.
Sembra interessante
VIDEO (http://world.honda.com/HDTV/news/2004-4040401a/)
http://www.autozine.org/technical_school/traction/SH_AWD.jpg
http://www.autozine.org/technical_school/traction/SH_AWD_cutaway.jpg
Honda's SH-AWD system is unique in the industry. It does not have any center differential or any limited-slip differential. All the mechanicals is mounted at the rear axle. The drive from propeller shaft is sent to an accelerator first. The latter uses planetary gears to step up the rotation speed, creating a speed difference between the input and output shaft. By applying electromagnetic clutches, the speed difference can transfer driving torque to the rear axle.
The electromagnetic multi-plate clutches are mounted behind the accelerator. There are 2 clutches, each responsible for one rear wheel. When the right clutch engage, more torque will be sent to the left rear wheel via the conventional differential. Vice versa, engage the left clutch will transfer more torque to the right rear wheel. (This theory is the same as Mitsubishi's Active Yaw Control) When both clutches engage, more torque will be sent to the rear axle. In this way, SH-AWD can very the torque split between front and rear axle, as well as between the rear wheels.
For Honda Legend equipped with SH-AWD, it normally runs with 70% torque distributed to the front wheels. Under acceleration and braking, up to 70% may be sent to the rear axle to generate more traction. During cornering, to reduce understeer, more torque will be distributed to the outside rear wheel. At extreme cases, the outside rear wheel can take 70% of the engine output, while the inside rear wheel 0% and the front wheels get the remaining 30%. When braking into corners, to correct the tendency of oversteer, more torque will be distributed to the inside rear wheel, taking advantage of the engine braking to reduce oversteer.