The invention concerns a planetary gearset reduction ring gear, in particular for motor vehicle starters, mounted fixedly in rotation in a housing and inner teeth meshing with the reduction planet wheels.

The planetary gears (40b) for a speed reducer are meshed with the outer ring gear (40d) for a speed reducer.

The speed reduction mechanism section (40) is provided with a sun gear (40a) for a speed reducer, planetary gears (40b) for a speed reducer, and an outer ring gear (40d) for a speed reducer.

A clutch (30) is provided between a motor housing (15b) and a speed reducer's outer ring gear (16d) which meshes with the speed reducer's planetary gears (16b).

The speed reducer comprises an internal gear, a carrier, a crankshaft, an external gear and a ring gear.

A fixed disc (16) is axially fixed in the inner gear ring of the planetary reducer (5).

Said reduction mechanism comprises a ring gear (30) which includes a fixed outer ring gear part (31) an inner ring gear part (32) bearing inner teeth (33) and shock absorber elements (34).

The invention concerns a planetary gearset reduction ring gear, in particular for motor vehicle starters, mounted fixedly in rotation in a housing and inner teeth meshing with the reduction planet wheels.

The hub (7) slides angularly inside the body of the reduction gear (1), while the ring gear (13) slides angularly on a step in the top opening of the body of the reduction gear (1).

ValueTRUE™ is the low cost, helical crowned True Planetary gearhead.

By driving a solar wheel (12) in the planet gear (4) via the variator, it is possible to provide a gear having a very large gearing range and which simultaneously enables direct transmission of power without any loss of transmission at all in the gear.

A reductant tank stores a reductant.

A reductant pump pumps the reductant from the reductant tank to the injector.

The invention relates to an annulus gear for an epicyclic reduction gear set comprising an inner ring (3, 3') comprising internal teeth able to mesh with planet gears of the epicyclic reduction gear set.

An inner-ring side member (64) is disposed between an inner ring of an axle bearing (100) and the outer periphery of the speed reducer (98), and secured to a suspension apparatus of the vehicle.