Jun. 19, 2006
DAIHATSU MOTOR CO., LTD. (Daihatsu) has developed an environmentally friendly, high acceleration performance CVT*1 for minivehicle use, and has commenced in-house manufacturing. Comprising the world's first "input-speed reduction type three-shaft gear train system" and other original components, the new CVT features enhanced fuel efficiency and smooth acceleration performance, with a lightweight, compact body.
In this system, a reduction gear on the input shaft side of the CVT reduces and reverses speed and rotation.
Minimizes transmission loss due to belt dislocation caused by high centrifugal force.
Increased torque with decreased rotational speed reduces transmission unit inertia.
No need for speed reduction on CVT output shaft side, thus reducing the number of shafts from 4 to 3.
Feature (1) above enhances fuel efficiency by approximately 15% over Daihatsu's conventional automatic transmission vehicles, attaining a class*2 leading fuel efficiency among mini vehicles of the same category.
Feature (2) above, together with the use of the world's smallest metal belt*3, increases acceleration performance by approximately 10% over Daihatsu's conventional automatic transmission vehicles, attaining powerful yet smooth acceleration from low to high speeds.
Feature (3) above, combined with the use of the world's smallest metal belt*3, enables a compact CVT ideal for minivehicles.
*1: Continuously Variable Transmission
*2: According to Daihatsu May 2006 survey on 660 cc minivehicle engine class
*3: According to Daihatsu May 2006 survey