What is an Engine Dynamometer?
An engine dyno is a service tool that allows the operator to safely place a controlled load on an engine. A loaded engine dynamometer test is the only method of verifying engine capability. With the use of a dyno, an engine can be properly operated throughout its power range without being placed into service. Assembly deficiencies may be detected before the engine is installed into a chassis and an actual evaluation of an engine’s operating condition may be performed. The dynamometer is the final quality test before an engine is installed. Construction An engine dynamometer has two major components: the absorption unit and the torque indication system. A water brake dynamometer uses an absorption unit (absorber) to absorb power through momentum exchange; using water as the working fluid. A water brake absorber consists of one or more shaft mounted rotors and at least two stators (or end bells). The rotors spin freely inside the absorber housing in the absence of water. When water is in
