Chassis Dynamometer

Abstract: The purpose of the present disclosure is to provide a configuration of a chassis dynamometer that has a more compact installation space. A roller (2) in a roller device (100) that is provided to a chassis dynamometer according to the present disclosure includes a motor (2) that is provided within a roller outer frame body (10). In the motor (2) a rotation shaft (21) is attached to the roller outer frame body (10) so as to be able to rotate in conjunction with a rotation operation of a motor rotor (71) and an oscillation shaft (21) is attached to a stator structure (72) and does not operate in conjunction with the rotation operation of the motor rotor (71). The rotation shaft (21) is supported by a bearing stand (11) for rotation and the oscillation shaft (22) is supported by a bearing stand (12) for oscillation. A cooling fan (50) that supplies a cooling airflow (F2) to the motor (7) is provided to the outside of the roller (2).

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