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A test rig and a method for testing gearboxes having different gear ratios
A test rig and a method for testing gearboxes having different gear ratios
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机译：齿轮比不同的变速箱的试验台及方法
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摘要
A test rig comprises a gear system (101) connectable to a gearbox under test, a power transmission shaft (104) such that the gear system, the gearbox (114) under test, and the power transmission shaft constitute a mechanical closed power loop, and a drive motor (105) arranged to drive the mechanical closed power loop. The gear system comprises a differential gear stage (106) for adapting the gear ratio of the test rig to correspond to the gear ratio of the gearbox under test. The differential gear stage comprises first and second rotatable elements which form part of the mechanical closed power loop and whose mutual rotational speed difference depends on rotational speed of a third rotatable element of the differential gear stage. Test torque is imposed to the gearbox under test by controlling the torque acting on the third rotatable element when the third rotatable element is rotating.
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