The disclosed retarder control device aims at ECU standardization and is able to function sufficiently as a retarder auxiliary brake regardless of driving conditions. A retarder control device (l) is provided with: a retarder (2) having 0^ both an energy conversion means (3) for converting rotational energy to el...

A suspension device configured m such a manner that an axle (2) i s suspended at the intermediate section o f a sin gle leaf spring (5). The suspension device i s provided with: a first restriction means which, when the leaf spring (5) breaks at a p o - smon behind the intermediate section, restricts the downward ...

A suspension device configured in such a manner that an axle (2) is supported at the intermediate section of a single leaf spring (5). The suspension device comprises a first restriction means which when the leaf spring (5) breaks at a position behind the intermediate section restricts the downward tilt movement of ...