Patent ID: 7672771
Filing Date: 2010-03-02
Classification: B60T,Y10T

Abstract:
1. A retarder control device, comprising: an engine rotational speed detector that detects an engine rotational speed; a gear step detection apparatus for detecting a gear step of a transmission; an accelerator operation detection apparatus for detecting an operational state of an accelerator; and a retarder controller that stores automatic braking amount determination data representing a relationship between an engine rotational speed and an automatic braking amount of a retarder corresponding to each of a plurality of gear steps of the transmission, and the retarder controller controls the retarder according to the automatic braking amount of the retarder calculated from said automatic braking amount determination data based on the detected engine rotational speed and gear step of the transmission when the accelerator is judged to be off from the detected operational state of the accelerator.