Transmission testing device

A transmission testing device for testing a test product at a temperature inside of an environmental chamber, wherein the test product is set in the environmental chamber and connected to an input shaft dynamometer through a torque meter arranged out of the environmental chamber, wherein:

• the test product is arranged to face a hole formed in a face plate, and is fixed to the face plate, and is attached to a test product attachment holder through the face plate, wherein the test product attachment holder is disposed outside of the environmental chamber;
• the test product attachment holder includes an opened side surface, and a second side surface opposite to the opened side surface, wherein the second side surface is formed with a hole having a box-shape;
• attachment of the test product to the test product attachment holder is implemented by fixing the face plate under a condition where the hole of the face plate and the hole of the test product attachment holder face each other, and arranging a flange in a hollow formed in the test product attachment holder for connection between the test product and the input shaft dynamometer, and connecting a first end of the flange to an adapter flange of the test product, and connecting a second end of the flange to a rotating shaft of the input shaft dynamometer through the torque meter;
• and
• a thermal insulation wall is provided at a test-product-fixing-side inner wall of the test product attachment holder, for suppressing thermal conduction from the environmental chamber.

A transmission testing device for testing a test product at a temperature inside of an environmental chamber, wherein the test product is set in the environmental chamber and connected to an input shaft dynamometer through a torque meter arranged out of the environmental chamber, wherein:

• the test product is arranged to face a hole formed in a face plate, and is fixed to the face plate;
• a test product attachment holder is disposed outside of the environmental chamber, and is formed with a hole in a position facing a position of the test product, wherein the hole of test product attachment holder faces the hole of the face plate;
• a hollow spacer is disposed between the hole of the test product and the hole of the test product attachment holder, wherein the test product is attached to the test product attachment holder through the face plate;
• and
• a flange is located in a hollow of the spacer, having an H-shape in side view, wherein the flange has a first end connected to an adapter flange fixed to the test product, and a second end connected to a rotating shaft of the input shaft dynamometer through the torque meter.