VEHICLE COMPOSITE PLANETARY GEARBOX Russian patent published in 2010 - IPC F16H3/44 

FIELD: automotive industry.

SUBSTANCE: two serially coupled planetary gearboxes, i.e. range and main gearboxes form proposed gearbox. Range gearbox consists of two three-link planetary mechanisms, one for reverse gear range and another for lower gear range, one locking coupling and two brakes. Kinematic characteristics of planetary mechanism are related by dependence K₁=1+K₂. Main gearbox is formed by two planetary mechanisms with kinematic characteristics K₃ and K₄, two brakes and one locking coupling. Kinematic characteristics of range and main gearboxes are related by K₁≅((1+K₃)/K₃)³ and K₄≅((1+K₃)/K₃)²-1. Ranges of planetary composite gearbox are divided according to geometrical progression with denominator

EFFECT: increased traction and improved acceleration.

2 tbl, 1 dwg