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The dynamometer is to mimics driving condition in an indoor controlled condition measuring engine output parameters like speed, torque, power, combustion conditions and exhaust compositions. However, the complexity and dynamics involved in the making of this instrument makes it unaffordable for student research except it is funded. This work reports an innovative method adopted to measure a three-wheeler engine output parameters. An automobile vehicle dynamo was adopted which requires low speed and outputs high torque. Driving conditions were incorporated as brakes for the dynamo which mimics the driving terrains experienced by the engine. A data acquisition unit capable of converting the electrical signals into readable values on a screen and a user interface on a PC completed the dynamometer development. The dynamometer was then calibrated against known output values of speed and torque. A three-wheeler engine was mounted on a test rig and the dynamometer was used to measure output speed, torque and energy dissipated. A Bajaj engine was mounted and the engine output tested for two types of transmission of manual and continuously variable transmission. The measured output from the engine showed that the developed dynamometer performed effectively and therefore be adopted for use for student research in this area. Keywords— dynamometer, load, speed, terrain, torque. 

Investigating the Performance of a Laboratory Dynamometer for a Three-wheeler Engine Test Rig